Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_i2c.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_i2c.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,5304 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_i2c.c + * @author MCD Application Team + * @version V1.5.0 + * @date 06-May-2016 + * @brief I2C HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of the Inter Integrated Circuit (I2C) peripheral: + * + Initialization and de-initialization functions + * + IO operation functions + * + Peripheral Control functions + * + Peripheral State functions + * + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + [..] + The I2C HAL driver can be used as follows: + + (#) Declare a I2C_HandleTypeDef handle structure, for example: + I2C_HandleTypeDef hi2c; + + (#)Initialize the I2C low level resources by implement the HAL_I2C_MspInit() API: + (##) Enable the I2Cx interface clock + (##) I2C pins configuration + (+++) Enable the clock for the I2C GPIOs + (+++) Configure I2C pins as alternate function open-drain + (##) NVIC configuration if you need to use interrupt process + (+++) Configure the I2Cx interrupt priority + (+++) Enable the NVIC I2C IRQ Channel + (##) DMA Configuration if you need to use DMA process + (+++) Declare a DMA_HandleTypeDef handle structure for the transmit or receive stream + (+++) Enable the DMAx interface clock using + (+++) Configure the DMA handle parameters + (+++) Configure the DMA Tx or Rx Stream + (+++) Associate the initialized DMA handle to the hi2c DMA Tx or Rx handle + (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on + the DMA Tx or Rx Stream + + (#) Configure the Communication Speed, Duty cycle, Addressing mode, Own Address1, + Dual Addressing mode, Own Address2, General call and Nostretch mode in the hi2c Init structure. + + (#) Initialize the I2C registers by calling the HAL_I2C_Init(), configures also the low level Hardware + (GPIO, CLOCK, NVIC...etc) by calling the customized HAL_I2C_MspInit(&hi2c) API. + + (#) To check if target device is ready for communication, use the function HAL_I2C_IsDeviceReady() + + (#) For I2C IO and IO MEM operations, three operation modes are available within this driver : + + *** Polling mode IO operation *** + ================================= + [..] + (+) Transmit in master mode an amount of data in blocking mode using HAL_I2C_Master_Transmit() + (+) Receive in master mode an amount of data in blocking mode using HAL_I2C_Master_Receive() + (+) Transmit in slave mode an amount of data in blocking mode using HAL_I2C_Slave_Transmit() + (+) Receive in slave mode an amount of data in blocking mode using HAL_I2C_Slave_Receive() + + *** Polling mode IO MEM operation *** + ===================================== + [..] + (+) Write an amount of data in blocking mode to a specific memory address using HAL_I2C_Mem_Write() + (+) Read an amount of data in blocking mode from a specific memory address using HAL_I2C_Mem_Read() + + + *** Interrupt mode IO operation *** + =================================== + [..] + (+) Transmit in master mode an amount of data in non blocking mode using HAL_I2C_Master_Transmit_IT() + (+) At transmission end of transfer HAL_I2C_MasterTxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback + (+) Receive in master mode an amount of data in non blocking mode using HAL_I2C_Master_Receive_IT() + (+) At reception end of transfer HAL_I2C_MasterRxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback + (+) Transmit in slave mode an amount of data in non blocking mode using HAL_I2C_Slave_Transmit_IT() + (+) At transmission end of transfer HAL_I2C_SlaveTxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback + (+) Receive in slave mode an amount of data in non blocking mode using HAL_I2C_Slave_Receive_IT() + (+) At reception end of transfer HAL_I2C_SlaveRxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback + (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_I2C_ErrorCallback + + *** Interrupt mode IO sequential operation *** + ============================================== + [..] + (+@) These interfaces allow to manage a sequential transfer with a repeated start condition + when a direction change during transfer + (+) A specific option manage the different steps of a sequential transfer + (+) Differents steps option I2C_XferOptions_definition are listed below : + (++) I2C_FIRST_AND_LAST_FRAME: No sequential usage, functionnal is same as associated interfaces in no sequential mode + (++) I2C_FIRST_FRAME: Sequential usage, this option allow to manage a start condition with data to transfer without a final stop condition + (++) I2C_NEXT_FRAME: Sequential usage, this option allow to manage a restart condition with new data to transfer if the direction change or + manage only the new data to transfer if no direction change and without a final stop condition in both cases + (++) I2C_LAST_FRAME: Sequential usage, this option allow to manage a restart condition with new data to transfer if the direction change or + manage only the new data to transfer if no direction change and with a final stop condition in both cases + + (+) Sequential transmit in master I2C mode an amount of data in non-blocking mode using HAL_I2C_Master_Sequential_Transmit_IT() + (++) At transmission end of current frame transfer, HAL_I2C_MasterTxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback() + (+) Sequential receive in master I2C mode an amount of data in non-blocking mode using HAL_I2C_Master_Sequential_Receive_IT() + (++) At reception end of current frame transfer, HAL_I2C_MasterRxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback() + (+) Abort a master I2C process communication with Interrupt using HAL_I2C_Master_Abort_IT() + (++) The associated previous transfer callback is called at the end of abort process + (++) mean HAL_I2C_MasterTxCpltCallback() in case of previous state was master transmit + (++) mean HAL_I2c_MasterRxCpltCallback() in case of previous state was master receive + (+) Enable/disable the Address listen mode in slave I2C mode + using HAL_I2C_EnableListen_IT() HAL_I2C_DisableListen_IT() + (++) When address slave I2C match, HAL_I2C_AddrCallback() is executed and user can + add his own code to check the Address Match Code and the transmission direction request by master (Write/Read). + (++) At Listen mode end HAL_I2C_ListenCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_ListenCpltCallback() + (+) Sequential transmit in slave I2C mode an amount of data in non-blocking mode using HAL_I2C_Slave_Sequential_Transmit_IT() + (++) At transmission end of current frame transfer, HAL_I2C_SlaveTxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback() + (+) Sequential receive in slave I2C mode an amount of data in non-blocking mode using HAL_I2C_Slave_Sequential_Receive_IT() + (++) At reception end of current frame transfer, HAL_I2C_SlaveRxCpltCallback() is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback() + + + *** Interrupt mode IO MEM operation *** + ======================================= + [..] + (+) Write an amount of data in no-blocking mode with Interrupt to a specific memory address using + HAL_I2C_Mem_Write_IT() + (+) At MEM end of write transfer HAL_I2C_MemTxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_MemTxCpltCallback + (+) Read an amount of data in no-blocking mode with Interrupt from a specific memory address using + HAL_I2C_Mem_Read_IT() + (+) At MEM end of read transfer HAL_I2C_MemRxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_MemRxCpltCallback + (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_I2C_ErrorCallback + + *** DMA mode IO operation *** + ============================== + [..] + (+) Transmit in master mode an amount of data in non blocking mode (DMA) using + HAL_I2C_Master_Transmit_DMA() + (+) At transmission end of transfer HAL_I2C_MasterTxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback + (+) Receive in master mode an amount of data in non blocking mode (DMA) using + HAL_I2C_Master_Receive_DMA() + (+) At reception end of transfer HAL_I2C_MasterRxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback + (+) Transmit in slave mode an amount of data in non blocking mode (DMA) using + HAL_I2C_Slave_Transmit_DMA() + (+) At transmission end of transfer HAL_I2C_SlaveTxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback + (+) Receive in slave mode an amount of data in non blocking mode (DMA) using + HAL_I2C_Slave_Receive_DMA() + (+) At reception end of transfer HAL_I2C_SlaveRxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback + (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_I2C_ErrorCallback + + *** DMA mode IO MEM operation *** + ================================= + [..] + (+) Write an amount of data in no-blocking mode with DMA to a specific memory address using + HAL_I2C_Mem_Write_DMA() + (+) At MEM end of write transfer HAL_I2C_MemTxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_MemTxCpltCallback + (+) Read an amount of data in no-blocking mode with DMA from a specific memory address using + HAL_I2C_Mem_Read_DMA() + (+) At MEM end of read transfer HAL_I2C_MemRxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2C_MemRxCpltCallback + (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_I2C_ErrorCallback + + + *** I2C HAL driver macros list *** + ================================== + [..] + Below the list of most used macros in I2C HAL driver. + + (+) __HAL_I2C_ENABLE: Enable the I2C peripheral + (+) __HAL_I2C_DISABLE: Disable the I2C peripheral + (+) __HAL_I2C_GET_FLAG: Checks whether the specified I2C flag is set or not + (+) __HAL_I2C_CLEAR_FLAG: Clear the specified I2C pending flag + (+) __HAL_I2C_ENABLE_IT: Enable the specified I2C interrupt + (+) __HAL_I2C_DISABLE_IT: Disable the specified I2C interrupt + + [..] + (@) You can refer to the I2C HAL driver header file for more useful macros + + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f4xx_hal.h" + +/** @addtogroup STM32F4xx_HAL_Driver + * @{ + */ + +/** @defgroup I2C I2C + * @brief I2C HAL module driver + * @{ + */ + +#ifdef HAL_I2C_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @addtogroup I2C_Private_Constants + * @{ + */ +#define I2C_TIMEOUT_FLAG ((uint32_t)35U) /*!< Timeout 35 ms */ +#define I2C_TIMEOUT_ADDR_SLAVE ((uint32_t)10000U) /*!< Timeout 10 s */ +#define I2C_TIMEOUT_BUSY_FLAG ((uint32_t)25U) /*!< Timeout 25 ms */ +#define I2C_NO_OPTION_FRAME ((uint32_t)0xFFFF0000U) /*!< XferOptions default value */ + +/* Private define for @ref PreviousState usage */ +#define I2C_STATE_MSK ((uint32_t)((HAL_I2C_STATE_BUSY_TX | HAL_I2C_STATE_BUSY_RX) & (~(uint32_t)HAL_I2C_STATE_READY))) /*!< Mask State define, keep only RX and TX bits */ +#define I2C_STATE_NONE ((uint32_t)(HAL_I2C_MODE_NONE)) /*!< Default Value */ +#define I2C_STATE_MASTER_BUSY_TX ((uint32_t)((HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | HAL_I2C_MODE_MASTER)) /*!< Master Busy TX, combinaison of State LSB and Mode enum */ +#define I2C_STATE_MASTER_BUSY_RX ((uint32_t)((HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | HAL_I2C_MODE_MASTER)) /*!< Master Busy RX, combinaison of State LSB and Mode enum */ +#define I2C_STATE_SLAVE_BUSY_TX ((uint32_t)((HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | HAL_I2C_MODE_SLAVE)) /*!< Slave Busy TX, combinaison of State LSB and Mode enum */ +#define I2C_STATE_SLAVE_BUSY_RX ((uint32_t)((HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | HAL_I2C_MODE_SLAVE)) /*!< Slave Busy RX, combinaison of State LSB and Mode enum */ + +/** + * @} + */ + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/** @addtogroup I2C_Private_Functions + * @{ + */ +/* Private functions to handle DMA transfer */ +static void I2C_DMAXferCplt(DMA_HandleTypeDef *hdma); +static void I2C_DMAError(DMA_HandleTypeDef *hdma); +static void I2C_DMAAbort(DMA_HandleTypeDef *hdma); + +static void I2C_ITError(I2C_HandleTypeDef *hi2c); + +static HAL_StatusTypeDef I2C_MasterRequestWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_MasterRequestRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_WaitOnMasterAddressFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_WaitOnTXEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_WaitOnBTFFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); +static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c); + +/* Private functions for I2C transfer IRQ handler */ +static HAL_StatusTypeDef I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_MasterTransmit_BTF(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_MasterReceive_BTF(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_Master_SB(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_Master_ADD10(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_Master_ADDR(I2C_HandleTypeDef *hi2c); + +static HAL_StatusTypeDef I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c); +static HAL_StatusTypeDef I2C_Slave_AF(I2C_HandleTypeDef *hi2c); +/** + * @} + */ + +/* Exported functions --------------------------------------------------------*/ +/** @defgroup I2C_Exported_Functions I2C Exported Functions + * @{ + */ + +/** @defgroup I2C_Exported_Functions_Group1 Initialization and de-initialization functions + * @brief Initialization and Configuration functions + * +@verbatim + =============================================================================== + ##### Initialization and de-initialization functions ##### + =============================================================================== + [..] This subsection provides a set of functions allowing to initialize and + de-initialize the I2Cx peripheral: + + (+) User must Implement HAL_I2C_MspInit() function in which he configures + all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC). + + (+) Call the function HAL_I2C_Init() to configure the selected device with + the selected configuration: + (++) Communication Speed + (++) Duty cycle + (++) Addressing mode + (++) Own Address 1 + (++) Dual Addressing mode + (++) Own Address 2 + (++) General call mode + (++) Nostretch mode + + (+) Call the function HAL_I2C_DeInit() to restore the default configuration + of the selected I2Cx peripheral. + +@endverbatim + * @{ + */ + +/** + * @brief Initializes the I2C according to the specified parameters + * in the I2C_InitTypeDef and create the associated handle. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c) +{ + uint32_t freqrange = 0U; + uint32_t pclk1 = 0U; + + /* Check the I2C handle allocation */ + if(hi2c == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance)); + assert_param(IS_I2C_CLOCK_SPEED(hi2c->Init.ClockSpeed)); + assert_param(IS_I2C_DUTY_CYCLE(hi2c->Init.DutyCycle)); + assert_param(IS_I2C_OWN_ADDRESS1(hi2c->Init.OwnAddress1)); + assert_param(IS_I2C_ADDRESSING_MODE(hi2c->Init.AddressingMode)); + assert_param(IS_I2C_DUAL_ADDRESS(hi2c->Init.DualAddressMode)); + assert_param(IS_I2C_OWN_ADDRESS2(hi2c->Init.OwnAddress2)); + assert_param(IS_I2C_GENERAL_CALL(hi2c->Init.GeneralCallMode)); + assert_param(IS_I2C_NO_STRETCH(hi2c->Init.NoStretchMode)); + + if(hi2c->State == HAL_I2C_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hi2c->Lock = HAL_UNLOCKED; + /* Init the low level hardware : GPIO, CLOCK, NVIC */ + HAL_I2C_MspInit(hi2c); + } + + hi2c->State = HAL_I2C_STATE_BUSY; + + /* Disable the selected I2C peripheral */ + __HAL_I2C_DISABLE(hi2c); + + /* Get PCLK1 frequency */ + pclk1 = HAL_RCC_GetPCLK1Freq(); + + /* Calculate frequency range */ + freqrange = I2C_FREQRANGE(pclk1); + + /*---------------------------- I2Cx CR2 Configuration ----------------------*/ + /* Configure I2Cx: Frequency range */ + hi2c->Instance->CR2 = freqrange; + + /*---------------------------- I2Cx TRISE Configuration --------------------*/ + /* Configure I2Cx: Rise Time */ + hi2c->Instance->TRISE = I2C_RISE_TIME(freqrange, hi2c->Init.ClockSpeed); + + /*---------------------------- I2Cx CCR Configuration ----------------------*/ + /* Configure I2Cx: Speed */ + hi2c->Instance->CCR = I2C_SPEED(pclk1, hi2c->Init.ClockSpeed, hi2c->Init.DutyCycle); + + /*---------------------------- I2Cx CR1 Configuration ----------------------*/ + /* Configure I2Cx: Generalcall and NoStretch mode */ + hi2c->Instance->CR1 = (hi2c->Init.GeneralCallMode | hi2c->Init.NoStretchMode); + + /*---------------------------- I2Cx OAR1 Configuration ---------------------*/ + /* Configure I2Cx: Own Address1 and addressing mode */ + hi2c->Instance->OAR1 = (hi2c->Init.AddressingMode | hi2c->Init.OwnAddress1); + + /*---------------------------- I2Cx OAR2 Configuration ---------------------*/ + /* Configure I2Cx: Dual mode and Own Address2 */ + hi2c->Instance->OAR2 = (hi2c->Init.DualAddressMode | hi2c->Init.OwnAddress2); + + /* Enable the selected I2C peripheral */ + __HAL_I2C_ENABLE(hi2c); + + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->State = HAL_I2C_STATE_READY; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->Mode = HAL_I2C_MODE_NONE; + + return HAL_OK; +} + +/** + * @brief DeInitializes the I2C peripheral. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c) +{ + /* Check the I2C handle allocation */ + if(hi2c == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance)); + + hi2c->State = HAL_I2C_STATE_BUSY; + + /* Disable the I2C Peripheral Clock */ + __HAL_I2C_DISABLE(hi2c); + + /* DeInit the low level hardware: GPIO, CLOCK, NVIC */ + HAL_I2C_MspDeInit(hi2c); + + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->State = HAL_I2C_STATE_RESET; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Release Lock */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; +} + +/** + * @brief I2C MSP Init. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval None + */ + __weak void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_I2C_MspInit could be implemented in the user file + */ +} + +/** + * @brief I2C MSP DeInit + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval None + */ + __weak void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_I2C_MspDeInit could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup I2C_Exported_Functions_Group2 IO operation functions + * @brief Data transfers functions + * +@verbatim + =============================================================================== + ##### IO operation functions ##### + =============================================================================== + [..] + This subsection provides a set of functions allowing to manage the I2C data + transfers. + + (#) There are two modes of transfer: + (++) Blocking mode : The communication is performed in the polling mode. + The status of all data processing is returned by the same function + after finishing transfer. + (++) No-Blocking mode : The communication is performed using Interrupts + or DMA. These functions return the status of the transfer startup. + The end of the data processing will be indicated through the + dedicated I2C IRQ when using Interrupt mode or the DMA IRQ when + using DMA mode. + + (#) Blocking mode functions are : + (++) HAL_I2C_Master_Transmit() + (++) HAL_I2C_Master_Receive() + (++) HAL_I2C_Slave_Transmit() + (++) HAL_I2C_Slave_Receive() + (++) HAL_I2C_Mem_Write() + (++) HAL_I2C_Mem_Read() + (++) HAL_I2C_IsDeviceReady() + + (#) No-Blocking mode functions with Interrupt are : + (++) HAL_I2C_Master_Transmit_IT() + (++) HAL_I2C_Master_Receive_IT() + (++) HAL_I2C_Slave_Transmit_IT() + (++) HAL_I2C_Slave_Receive_IT() + (++) HAL_I2C_Master_Sequential_Transmit_IT() + (++) HAL_I2C_Master_Sequential_Receive_IT() + (++) HAL_I2C_Slave_Sequential_Transmit_IT() + (++) HAL_I2C_Slave_Sequential_Receive_IT() + (++) HAL_I2C_Mem_Write_IT() + (++) HAL_I2C_Mem_Read_IT() + + (#) No-Blocking mode functions with DMA are : + (++) HAL_I2C_Master_Transmit_DMA() + (++) HAL_I2C_Master_Receive_DMA() + (++) HAL_I2C_Slave_Transmit_DMA() + (++) HAL_I2C_Slave_Receive_DMA() + (++) HAL_I2C_Mem_Write_DMA() + (++) HAL_I2C_Mem_Read_DMA() + + (#) A set of Transfer Complete Callbacks are provided in non Blocking mode: + (++) HAL_I2C_MemTxCpltCallback() + (++) HAL_I2C_MemRxCpltCallback() + (++) HAL_I2C_MasterTxCpltCallback() + (++) HAL_I2C_MasterRxCpltCallback() + (++) HAL_I2C_SlaveTxCpltCallback() + (++) HAL_I2C_SlaveRxCpltCallback() + (++) HAL_I2C_ErrorCallback() + (++) HAL_I2C_AbortCpltCallback() + +@endverbatim + * @{ + */ + +/** + * @brief Transmits in master mode an amount of data in blocking mode. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0x00U; + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + /* Send Slave Address */ + if(I2C_MasterRequestWrite(hi2c, DevAddress, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + while(Size > 0U) + { + /* Wait until TXE flag is set */ + if(I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Write data to DR */ + hi2c->Instance->DR = (*pData++); + Size--; + + if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0U)) + { + /* Write data to DR */ + hi2c->Instance->DR = (*pData++); + Size--; + } + + /* Wait until BTF flag is set */ + if(I2C_WaitOnBTFFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + } + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receives in master mode an amount of data in blocking mode. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0x00U; + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + /* Send Slave Address */ + if(I2C_MasterRequestRead(hi2c, DevAddress, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + if(Size == 0U) + { + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + } + else if(Size == 1U) + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + } + else if(Size == 2U) + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Enable Pos */ + hi2c->Instance->CR1 |= I2C_CR1_POS; + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + else + { + /* Enable Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + + while(Size > 0U) + { + if(Size <= 3U) + { + /* One byte */ + if(Size == 1U) + { + /* Wait until RXNE flag is set */ + if(I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT) + { + return HAL_TIMEOUT; + } + else + { + return HAL_ERROR; + } + } + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + } + /* Two bytes */ + else if(Size == 2U) + { + /* Wait until BTF flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + } + /* 3 Last bytes */ + else + { + /* Wait until BTF flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + + /* Wait until BTF flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + } + } + else + { + /* Wait until RXNE flag is set */ + if(I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT) + { + return HAL_TIMEOUT; + } + else + { + return HAL_ERROR; + } + } + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) + { + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + } + } + } + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmits in slave mode an amount of data in blocking mode. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0x00U; + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Wait until BUSY flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Wait until ADDR flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* If 10bit addressing mode is selected */ + if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT) + { + /* Wait until ADDR flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + + while(Size > 0U) + { + /* Wait until TXE flag is set */ + if(I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Write data to DR */ + hi2c->Instance->DR = (*pData++); + Size--; + + if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0U)) + { + /* Write data to DR */ + hi2c->Instance->DR = (*pData++); + Size--; + } + } + + /* Wait until AF flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_AF, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Clear AF flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Disable Address Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive in slave mode an amount of data in blocking mode + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Receive(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0x00U; + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Wait until BUSY flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Wait until ADDR flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + while(Size > 0U) + { + /* Wait until RXNE flag is set */ + if(I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT) + { + return HAL_TIMEOUT; + } + else + { + return HAL_ERROR; + } + } + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + + if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0U)) + { + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + } + } + + /* Wait until STOP flag is set */ + if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + /* Disable Address Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Clear STOP flag */ + __HAL_I2C_CLEAR_STOPFLAG(hi2c); + + /* Disable Address Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit in master mode an amount of data in no-blocking mode with Interrupt + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) +{ + __IO uint32_t count = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->Devaddress = DevAddress; + + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable EVT, BUF and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive in master mode an amount of data in no-blocking mode with Interrupt + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) +{ + __IO uint32_t count = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->Devaddress = DevAddress; + + /* Enable Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable EVT, BUF and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Sequential transmit in master mode an amount of data in no-blocking mode with Interrupt + * @note This interface allow to manage repeated start condition when a direction change during transfer + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Sequential_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions) +{ + uint32_t Prev_State = 0x00U; + __IO uint32_t count = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Check Busy Flag only if FIRST call of Master interface */ + if((XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME)) + { + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = XferOptions; + hi2c->Devaddress = DevAddress; + + Prev_State = hi2c->PreviousState; + + /* Generate Start */ + if((Prev_State == I2C_STATE_MASTER_BUSY_RX) || (Prev_State == I2C_STATE_NONE)) + { + /* Generate Start condition if first transfer */ + if((XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME)) + { + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + } + else if(Prev_State == I2C_STATE_MASTER_BUSY_RX) + { + /* Generate ReStart */ + hi2c->Instance->CR1 |= I2C_CR1_START; + } + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable EVT, BUF and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Sequential receive in master mode an amount of data in no-blocking mode with Interrupt + * @note This interface allow to manage repeated start condition when a direction change during transfer + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Sequential_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions) +{ + uint32_t Prev_State = 0x00U; + __IO uint32_t count = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Check Busy Flag only if FIRST call of Master interface */ + if((XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME)) + { + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = XferOptions; + hi2c->Devaddress = DevAddress; + + Prev_State = hi2c->PreviousState; + + if((Prev_State == I2C_STATE_MASTER_BUSY_TX) || (Prev_State == I2C_STATE_NONE)) + { + /* Generate Start condition if first transfer */ + if((XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME) || (XferOptions == I2C_NO_OPTION_FRAME)) + { + /* Enable Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + } + else if(Prev_State == I2C_STATE_MASTER_BUSY_TX) + { + /* Enable Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Generate ReStart */ + hi2c->Instance->CR1 |= I2C_CR1_START; + } + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable EVT, BUF and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit in slave mode an amount of data in no-blocking mode with Interrupt + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) +{ + __IO uint32_t count = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable EVT, BUF and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive in slave mode an amount of data in no-blocking mode with Interrupt + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) +{ + __IO uint32_t count = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable EVT, BUF and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Sequential transmit in slave mode an amount of data in no-blocking mode with Interrupt + * @note This interface allow to manage repeated start condition when a direction change during transfer + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Sequential_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions) +{ + /* Check the parameters */ + assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); + + if(hi2c->State == HAL_I2C_STATE_LISTEN) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_TX_LISTEN; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = XferOptions; + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable EVT, BUF and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Sequential receive in slave mode an amount of data in no-blocking mode with Interrupt + * @note This interface allow to manage repeated start condition when a direction change during transfer + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Sequential_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions) +{ + /* Check the parameters */ + assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); + + if(hi2c->State == HAL_I2C_STATE_LISTEN) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_RX_LISTEN; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = XferOptions; + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable EVT, BUF and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Enable the Address listen mode with Interrupt. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_EnableListen_IT(I2C_HandleTypeDef *hi2c) +{ + if(hi2c->State == HAL_I2C_STATE_READY) + { + hi2c->State = HAL_I2C_STATE_LISTEN; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Enable EVT and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Disable the Address listen mode with Interrupt. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_DisableListen_IT(I2C_HandleTypeDef *hi2c) +{ + /* Declaration of tmp to prevent undefined behavior of volatile usage */ + uint32_t tmp; + + /* Disable Address listen mode only if a transfer is not ongoing */ + if(hi2c->State == HAL_I2C_STATE_LISTEN) + { + tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK; + hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode); + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Disable Address Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Disable EVT and ERR interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit in master mode an amount of data in no-blocking mode with DMA + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) +{ + uint32_t tickstart = 0x00U; + + __IO uint32_t count = 0U; + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + if(hi2c->XferSize > 0U) + { + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt; + + /* Set the DMA error callback */ + hi2c->hdmatx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmatx->XferHalfCpltCallback = NULL; + hi2c->hdmatx->XferM1CpltCallback = NULL; + hi2c->hdmatx->XferM1HalfCpltCallback = NULL; + hi2c->hdmatx->XferAbortCallback = NULL; + + /* Enable the DMA Stream */ + HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->DR, Size); + + /* Send Slave Address */ + if(I2C_MasterRequestWrite(hi2c, DevAddress, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Enable ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR); + + /* Enable DMA Request */ + hi2c->Instance->CR2 |= I2C_CR2_DMAEN; + } + else + { + /* Send Slave Address */ + if(I2C_MasterRequestWrite(hi2c, DevAddress, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + hi2c->State = HAL_I2C_STATE_READY; + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive in master mode an amount of data in no-blocking mode with DMA + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) +{ + uint32_t tickstart = 0x00U; + + __IO uint32_t count = 0U; + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MASTER; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + if(hi2c->XferSize > 0U) + { + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt; + + /* Set the DMA error callback */ + hi2c->hdmarx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmarx->XferHalfCpltCallback = NULL; + hi2c->hdmarx->XferM1CpltCallback = NULL; + hi2c->hdmarx->XferM1HalfCpltCallback = NULL; + hi2c->hdmarx->XferAbortCallback = NULL; + + /* Enable the DMA Stream */ + HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)pData, Size); + + /* Send Slave Address */ + if(I2C_MasterRequestRead(hi2c, DevAddress, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + if(Size == 1U) + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + } + else + { + /* Enable Last DMA bit */ + hi2c->Instance->CR2 |= I2C_CR2_LAST; + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR); + + /* Enable DMA Request */ + hi2c->Instance->CR2 |= I2C_CR2_DMAEN; + } + else + { + /* Send Slave Address */ + if(I2C_MasterRequestRead(hi2c, DevAddress, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + hi2c->State = HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + } + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Abort a master I2C process communication with Interrupt. + * @note This abort can be called only if state is ready + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Master_Abort_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress) +{ + /* Abort Master transfer during Receive or Transmit process */ + if(hi2c->Mode == HAL_I2C_MODE_MASTER) + { + /* Process Locked */ + __HAL_LOCK(hi2c); + + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State = HAL_I2C_STATE_ABORT; + + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + hi2c->XferCount = 0U; + + /* Disable EVT, BUF and ERR interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + if(hi2c->State == HAL_I2C_STATE_ABORT) + { + hi2c->State = HAL_I2C_STATE_READY; + + /* Call the Abort Complete callback */ + HAL_I2C_AbortCpltCallback(hi2c); + } + + return HAL_OK; + } + else + { + /* Wrong usage of abort function */ + /* This function should be used only in case of abort monitored by master device */ + return HAL_ERROR; + } +} + +/** + * @brief Transmit in slave mode an amount of data in no-blocking mode with DMA + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) +{ + __IO uint32_t count = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt; + + /* Set the DMA error callback */ + hi2c->hdmatx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmatx->XferHalfCpltCallback = NULL; + hi2c->hdmatx->XferM1CpltCallback = NULL; + hi2c->hdmatx->XferM1HalfCpltCallback = NULL; + hi2c->hdmatx->XferAbortCallback = NULL; + + /* Enable the DMA Stream */ + HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->DR, Size); + + /* Enable ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR); + + /* Enable DMA Request */ + hi2c->Instance->CR2 |= I2C_CR2_DMAEN; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Wait until ADDR flag is set */ + count = I2C_TIMEOUT_ADDR_SLAVE * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == RESET); + + /* If 7bit addressing mode is selected */ + if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT) + { + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + else + { + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Wait until ADDR flag is set */ + count = I2C_TIMEOUT_ADDR_SLAVE * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == RESET); + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive in slave mode an amount of data in no-blocking mode with DMA + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Slave_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) +{ + __IO uint32_t count = 0U; + + if(hi2c->State == HAL_I2C_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_SLAVE; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt; + + /* Set the DMA error callback */ + hi2c->hdmarx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmarx->XferHalfCpltCallback = NULL; + hi2c->hdmarx->XferM1CpltCallback = NULL; + hi2c->hdmarx->XferM1HalfCpltCallback = NULL; + hi2c->hdmarx->XferAbortCallback = NULL; + + /* Enable the DMA Stream */ + HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)pData, Size); + + /* Enable ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR); + + /* Enable DMA Request */ + hi2c->Instance->CR2 |= I2C_CR2_DMAEN; + + /* Enable Address Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Wait until ADDR flag is set */ + count = I2C_TIMEOUT_ADDR_SLAVE * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == RESET); + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} +/** + * @brief Write an amount of data in blocking mode to a specific memory address + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0x00U; + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + while(Size > 0U) + { + /* Wait until TXE flag is set */ + if(I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Write data to DR */ + hi2c->Instance->DR = (*pData++); + Size--; + + if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0)) + { + /* Write data to DR */ + hi2c->Instance->DR = (*pData++); + Size--; + } + } + + /* Wait until BTF flag is set */ + if(I2C_WaitOnBTFFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Read an amount of data in blocking mode from a specific memory address + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint32_t tickstart = 0x00U; + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + if(Size == 0U) + { + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + } + else if(Size == 1U) + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + } + else if(Size == 2U) + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Enable Pos */ + hi2c->Instance->CR1 |= I2C_CR1_POS; + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + else + { + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + + while(Size > 0U) + { + if(Size <= 3U) + { + /* One byte */ + if(Size== 1U) + { + /* Wait until RXNE flag is set */ + if(I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT) + { + return HAL_TIMEOUT; + } + else + { + return HAL_ERROR; + } + } + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + } + /* Two bytes */ + else if(Size == 2U) + { + /* Wait until BTF flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + } + /* 3 Last bytes */ + else + { + /* Wait until BTF flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + + /* Wait until BTF flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + } + } + else + { + /* Wait until RXNE flag is set */ + if(I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT) + { + return HAL_TIMEOUT; + } + else + { + return HAL_ERROR; + } + } + + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) + { + /* Read data from DR */ + (*pData++) = hi2c->Instance->DR; + Size--; + } + } + } + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Write an amount of data in no-blocking mode with Interrupt to a specific memory address + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Write_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) +{ + __IO uint32_t count = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->Devaddress = DevAddress; + hi2c->Memaddress = MemAddress; + hi2c->MemaddSize = MemAddSize; + hi2c->EventCount = 0U; + + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable EVT, BUF and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Read an amount of data in no-blocking mode with Interrupt from a specific memory address + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) +{ + __IO uint32_t count = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->Devaddress = DevAddress; + hi2c->Memaddress = MemAddress; + hi2c->MemaddSize = MemAddSize; + hi2c->EventCount = 0U; + + /* Enable Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + if(hi2c->XferSize > 0U) + { + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + + /* Enable EVT, BUF and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + } + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Write an amount of data in no-blocking mode with DMA to a specific memory address + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Write_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) +{ + uint32_t tickstart = 0x00U; + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + __IO uint32_t count = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_TX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + if(hi2c->XferSize > 0U) + { + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt; + + /* Set the DMA error callback */ + hi2c->hdmatx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmatx->XferHalfCpltCallback = NULL; + hi2c->hdmatx->XferM1CpltCallback = NULL; + hi2c->hdmatx->XferM1HalfCpltCallback = NULL; + hi2c->hdmatx->XferAbortCallback = NULL; + + /* Enable the DMA Stream */ + HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->DR, Size); + + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Enable ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR); + + /* Enable DMA Request */ + hi2c->Instance->CR2 |= I2C_CR2_DMAEN; + } + else + { + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + hi2c->State = HAL_I2C_STATE_READY; + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Reads an amount of data in no-blocking mode with DMA from a specific memory address. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param pData Pointer to data buffer + * @param Size Amount of data to be read + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_Mem_Read_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) +{ + uint32_t tickstart = 0x00U; + + /* Init tickstart for timeout management*/ + tickstart = HAL_GetTick(); + + __IO uint32_t count = 0U; + + /* Check the parameters */ + assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); + do + { + if(count-- == 0U) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY_RX; + hi2c->Mode = HAL_I2C_MODE_MEM; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + + hi2c->pBuffPtr = pData; + hi2c->XferSize = Size; + hi2c->XferCount = Size; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + if(hi2c->XferSize > 0U) + { + /* Set the I2C DMA transfer complete callback */ + hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt; + + /* Set the DMA error callback */ + hi2c->hdmarx->XferErrorCallback = I2C_DMAError; + + /* Set the unused DMA callbacks to NULL */ + hi2c->hdmarx->XferHalfCpltCallback = NULL; + hi2c->hdmarx->XferM1CpltCallback = NULL; + hi2c->hdmarx->XferM1HalfCpltCallback = NULL; + hi2c->hdmarx->XferAbortCallback = NULL; + + /* Enable the DMA Stream */ + HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)pData, Size); + + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + if(Size == 1U) + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + } + else + { + /* Enable Last DMA bit */ + hi2c->Instance->CR2 |= I2C_CR2_LAST; + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + /* Note : The I2C interrupts must be enabled after unlocking current process + to avoid the risk of I2C interrupt handle execution before current + process unlock */ + /* Enable ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR); + + /* Enable DMA Request */ + hi2c->Instance->CR2 |= I2C_CR2_DMAEN; + } + else + { + /* Send Slave Address and Memory Address */ + if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_ERROR; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + return HAL_TIMEOUT; + } + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + hi2c->State = HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + } + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Checks if target device is ready for communication. + * @note This function is used with Memory devices + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address + * @param Trials Number of trials + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout) +{ + uint32_t tickstart = 0U, tmp1 = 0U, tmp2 = 0U, tmp3 = 0U, I2C_Trials = 1U; + + /* Get tick */ + tickstart = HAL_GetTick(); + + if(hi2c->State == HAL_I2C_STATE_READY) + { + /* Wait until BUSY flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) + { + return HAL_BUSY; + } + + /* Process Locked */ + __HAL_LOCK(hi2c); + + /* Disable Pos */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + hi2c->State = HAL_I2C_STATE_BUSY; + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + do + { + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + + /* Wait until SB flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Send slave address */ + hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress); + + /* Wait until ADDR or AF flag are set */ + /* Get tick */ + tickstart = HAL_GetTick(); + + tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR); + tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF); + tmp3 = hi2c->State; + while((tmp1 == RESET) && (tmp2 == RESET) && (tmp3 != HAL_I2C_STATE_TIMEOUT)) + { + if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout)) + { + hi2c->State = HAL_I2C_STATE_TIMEOUT; + } + tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR); + tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF); + tmp3 = hi2c->State; + } + + hi2c->State = HAL_I2C_STATE_READY; + + /* Check if the ADDR flag has been set */ + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == SET) + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + /* Clear ADDR Flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Wait until BUSY flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + hi2c->State = HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_OK; + } + else + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + /* Clear AF Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Wait until BUSY flag is reset */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + } + }while(I2C_Trials++ < Trials); + + hi2c->State = HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_ERROR; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief This function handles I2C event interrupt request. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +void HAL_I2C_EV_IRQHandler(I2C_HandleTypeDef *hi2c) +{ + uint32_t sr2itflags = READ_REG(hi2c->Instance->SR2); + uint32_t sr1itflags = READ_REG(hi2c->Instance->SR1); + uint32_t itsources = READ_REG(hi2c->Instance->CR2); + + uint32_t CurrentMode = hi2c->Mode; + + /* Master or Memory mode selected */ + if((CurrentMode == HAL_I2C_MODE_MASTER) || (CurrentMode == HAL_I2C_MODE_MEM)) + { + /* SB Set ----------------------------------------------------------------*/ + if(((sr1itflags & I2C_FLAG_SB) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) + { + I2C_Master_SB(hi2c); + } + /* ADD10 Set -------------------------------------------------------------*/ + else if(((sr1itflags & I2C_FLAG_ADD10) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) + { + I2C_Master_ADD10(hi2c); + } + /* ADDR Set --------------------------------------------------------------*/ + else if(((sr1itflags & I2C_FLAG_ADDR) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) + { + I2C_Master_ADDR(hi2c); + } + + /* I2C in mode Transmitter -----------------------------------------------*/ + if((sr2itflags & I2C_FLAG_TRA) != RESET) + { + /* TXE set and BTF reset -----------------------------------------------*/ + if(((sr1itflags & I2C_FLAG_TXE) != RESET) && ((itsources & I2C_IT_BUF) != RESET) && ((sr1itflags & I2C_FLAG_BTF) == RESET)) + { + I2C_MasterTransmit_TXE(hi2c); + } + /* BTF set -------------------------------------------------------------*/ + else if(((sr1itflags & I2C_FLAG_BTF) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) + { + I2C_MasterTransmit_BTF(hi2c); + } + } + /* I2C in mode Receiver --------------------------------------------------*/ + else + { + /* RXNE set and BTF reset -----------------------------------------------*/ + if(((sr1itflags & I2C_FLAG_RXNE) != RESET) && ((itsources & I2C_IT_BUF) != RESET) && ((sr1itflags & I2C_FLAG_BTF) == RESET)) + { + I2C_MasterReceive_RXNE(hi2c); + } + /* BTF set -------------------------------------------------------------*/ + else if(((sr1itflags & I2C_FLAG_BTF) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) + { + I2C_MasterReceive_BTF(hi2c); + } + } + } + /* Slave mode selected */ + else + { + /* ADDR set --------------------------------------------------------------*/ + if(((sr1itflags & I2C_FLAG_ADDR) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) + { + I2C_Slave_ADDR(hi2c); + } + /* STOPF set --------------------------------------------------------------*/ + else if(((sr1itflags & I2C_FLAG_STOPF) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) + { + I2C_Slave_STOPF(hi2c); + } + /* I2C in mode Transmitter -----------------------------------------------*/ + else if((sr2itflags & I2C_FLAG_TRA) != RESET) + { + /* TXE set and BTF reset -----------------------------------------------*/ + if(((sr1itflags & I2C_FLAG_TXE) != RESET) && ((itsources & I2C_IT_BUF) != RESET) && ((sr1itflags & I2C_FLAG_BTF) == RESET)) + { + I2C_SlaveTransmit_TXE(hi2c); + } + /* BTF set -------------------------------------------------------------*/ + else if(((sr1itflags & I2C_FLAG_BTF) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) + { + I2C_SlaveTransmit_BTF(hi2c); + } + } + /* I2C in mode Receiver --------------------------------------------------*/ + else + { + /* RXNE set and BTF reset ----------------------------------------------*/ + if(((sr1itflags & I2C_FLAG_RXNE) != RESET) && ((itsources & I2C_IT_BUF) != RESET) && ((sr1itflags & I2C_FLAG_BTF) == RESET)) + { + I2C_SlaveReceive_RXNE(hi2c); + } + /* BTF set -------------------------------------------------------------*/ + else if(((sr1itflags & I2C_FLAG_BTF) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) + { + I2C_SlaveReceive_BTF(hi2c); + } + } + } +} + +/** + * @brief This function handles I2C error interrupt request. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c) +{ + uint32_t tmp1 = 0U, tmp2 = 0U, tmp3 = 0U, tmp4 = 0U; + uint32_t sr1itflags = READ_REG(hi2c->Instance->SR1); + uint32_t itsources = READ_REG(hi2c->Instance->CR2); + + /* I2C Bus error interrupt occurred ----------------------------------------*/ + if(((sr1itflags & I2C_FLAG_BERR) != RESET) && ((itsources & I2C_IT_ERR) != RESET)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_BERR; + + /* Clear BERR flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_BERR); + } + + /* I2C Arbitration Loss error interrupt occurred ---------------------------*/ + if(((sr1itflags & I2C_FLAG_ARLO) != RESET) && ((itsources & I2C_IT_ERR) != RESET)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_ARLO; + + /* Clear ARLO flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ARLO); + } + + /* I2C Acknowledge failure error interrupt occurred ------------------------*/ + if(((sr1itflags & I2C_FLAG_AF) != RESET) && ((itsources & I2C_IT_ERR) != RESET)) + { + tmp1 = hi2c->Mode; + tmp2 = hi2c->XferCount; + tmp3 = hi2c->State; + tmp4 = hi2c->PreviousState; + if((tmp1 == HAL_I2C_MODE_SLAVE) && (tmp2 == 0U) && \ + ((tmp3 == HAL_I2C_STATE_BUSY_TX) || (tmp3 == HAL_I2C_STATE_BUSY_TX_LISTEN) || \ + ((tmp3 == HAL_I2C_STATE_LISTEN) && (tmp4 == I2C_STATE_SLAVE_BUSY_TX)))) + { + I2C_Slave_AF(hi2c); + } + else + { + hi2c->ErrorCode |= HAL_I2C_ERROR_AF; + + /* Generate Stop */ + SET_BIT(hi2c->Instance->CR1,I2C_CR1_STOP); + + /* Clear AF flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + } + } + + /* I2C Over-Run/Under-Run interrupt occurred -------------------------------*/ + if(((sr1itflags & I2C_FLAG_OVR) != RESET) && ((itsources & I2C_IT_ERR) != RESET)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_OVR; + /* Clear OVR flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_OVR); + } + + /* Call the Error Callback in case of Error detected -----------------------*/ + if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE) + { + I2C_ITError(hi2c); + } +} + +/** + * @brief Master Tx Transfer completed callbacks. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval None + */ +__weak void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_MasterTxCpltCallback can be implemented in the user file + */ +} + +/** + * @brief Master Rx Transfer completed callbacks. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval None + */ +__weak void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_MasterRxCpltCallback can be implemented in the user file + */ +} + +/** @brief Slave Tx Transfer completed callbacks. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval None + */ +__weak void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_SlaveTxCpltCallback can be implemented in the user file + */ +} + +/** + * @brief Slave Rx Transfer completed callbacks. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval None + */ +__weak void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_SlaveRxCpltCallback can be implemented in the user file + */ +} + +/** + * @brief Slave Address Match callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param TransferDirection Master request Transfer Direction (Write/Read), value of @ref I2C_XferOptions_definition + * @param AddrMatchCode Address Match Code + * @retval None + */ +__weak void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + UNUSED(TransferDirection); + UNUSED(AddrMatchCode); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_AddrCallback can be implemented in the user file + */ +} + +/** + * @brief Listen Complete callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_ListenCpltCallback can be implemented in the user file + */ +} + +/** + * @brief Memory Tx Transfer completed callbacks. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval None + */ +__weak void HAL_I2C_MemTxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_MemTxCpltCallback can be implemented in the user file + */ +} + +/** + * @brief Memory Rx Transfer completed callbacks. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval None + */ +__weak void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_MemRxCpltCallback can be implemented in the user file + */ +} + +/** + * @brief I2C error callbacks. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval None + */ +__weak void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_ErrorCallback can be implemented in the user file + */ +} + +/** + * @brief I2C abort callback. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval None + */ +__weak void HAL_I2C_AbortCpltCallback(I2C_HandleTypeDef *hi2c) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2c); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_I2C_AbortCpltCallback could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup I2C_Exported_Functions_Group3 Peripheral State and Errors functions + * @brief Peripheral State and Errors functions + * +@verbatim + =============================================================================== + ##### Peripheral State, Mode and Errors functions ##### + =============================================================================== + [..] + This subsection permits to get in run-time the status of the peripheral + and the data flow. + +@endverbatim + * @{ + */ + +/** + * @brief Returns the I2C state. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL state + */ +HAL_I2C_StateTypeDef HAL_I2C_GetState(I2C_HandleTypeDef *hi2c) +{ + return hi2c->State; +} + +/** + * @brief Returns the I2C Master, Slave, Memory or no mode. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL mode + */ +HAL_I2C_ModeTypeDef HAL_I2C_GetMode(I2C_HandleTypeDef *hi2c) +{ + return hi2c->Mode; +} + +/** + * @brief Return the I2C error code + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval I2C Error Code + */ +uint32_t HAL_I2C_GetError(I2C_HandleTypeDef *hi2c) +{ + return hi2c->ErrorCode; +} + +/** + * @} + */ + +/** + * @brief Handle TXE flag for Master + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c) +{ + /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ + uint32_t CurrentState = hi2c->State; + uint32_t CurrentMode = hi2c->Mode; + uint32_t CurrentXferOptions = hi2c->XferOptions; + uint32_t tmp; + + if((hi2c->XferSize == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_TX)) + { + /* Call TxCpltCallback() directly if no stop mode is set */ + if((CurrentXferOptions != I2C_FIRST_AND_LAST_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME) && (CurrentXferOptions != I2C_NO_OPTION_FRAME)) + { + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK; + hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode); + hi2c->Mode = HAL_I2C_MODE_NONE; + hi2c->State = HAL_I2C_STATE_READY; + + HAL_I2C_MasterTxCpltCallback(hi2c); + } + else /* Generate Stop condition then Call TxCpltCallback() */ + { + /* Disable EVT, BUF and ERR interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State = HAL_I2C_STATE_READY; + + if(hi2c->Mode == HAL_I2C_MODE_MEM) + { + hi2c->Mode = HAL_I2C_MODE_NONE; + HAL_I2C_MemTxCpltCallback(hi2c); + } + else + { + hi2c->Mode = HAL_I2C_MODE_NONE; + HAL_I2C_MasterTxCpltCallback(hi2c); + } + } + } + else if((CurrentState == HAL_I2C_STATE_BUSY_TX) || \ + ((CurrentMode == HAL_I2C_MODE_MEM) && (CurrentState == HAL_I2C_STATE_BUSY_RX))) + { + if(hi2c->XferCount == 0U) + { + /* Disable BUF interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF); + } + else + { + if(hi2c->Mode == HAL_I2C_MODE_MEM) + { + if(hi2c->EventCount == 0) + { + /* If Memory address size is 8Bit */ + if(hi2c->MemaddSize == I2C_MEMADD_SIZE_8BIT) + { + /* Send Memory Address */ + hi2c->Instance->DR = I2C_MEM_ADD_LSB(hi2c->Memaddress); + + hi2c->EventCount += 2; + } + /* If Memory address size is 16Bit */ + else + { + /* Send MSB of Memory Address */ + hi2c->Instance->DR = I2C_MEM_ADD_MSB(hi2c->Memaddress); + + hi2c->EventCount++; + } + } + else if(hi2c->EventCount == 1) + { + /* Send LSB of Memory Address */ + hi2c->Instance->DR = I2C_MEM_ADD_LSB(hi2c->Memaddress); + + hi2c->EventCount++; + } + else if(hi2c->EventCount == 2) + { + if(hi2c->State == HAL_I2C_STATE_BUSY_RX) + { + /* Generate Restart */ + hi2c->Instance->CR1 |= I2C_CR1_START; + } + else if(hi2c->State == HAL_I2C_STATE_BUSY_TX) + { + /* Write data to DR */ + hi2c->Instance->DR = (*hi2c->pBuffPtr++); + hi2c->XferCount--; + } + } + } + else + { + /* Write data to DR */ + hi2c->Instance->DR = (*hi2c->pBuffPtr++); + hi2c->XferCount--; + } + } + } + return HAL_OK; +} + +/** + * @brief Handle BTF flag for Master transmitter + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_MasterTransmit_BTF(I2C_HandleTypeDef *hi2c) +{ + /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ + uint32_t tmp; + uint32_t CurrentXferOptions = hi2c->XferOptions; + + if(hi2c->State == HAL_I2C_STATE_BUSY_TX) + { + if(hi2c->XferCount != 0U) + { + /* Write data to DR */ + hi2c->Instance->DR = (*hi2c->pBuffPtr++); + hi2c->XferCount--; + } + else + { + /* Call TxCpltCallback() directly if no stop mode is set */ + if((CurrentXferOptions != I2C_FIRST_AND_LAST_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME) && (CurrentXferOptions != I2C_NO_OPTION_FRAME)) + { + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK; + hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode); + hi2c->Mode = HAL_I2C_MODE_NONE; + hi2c->State = HAL_I2C_STATE_READY; + + HAL_I2C_MasterTxCpltCallback(hi2c); + } + else /* Generate Stop condition then Call TxCpltCallback() */ + { + /* Disable EVT, BUF and ERR interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State = HAL_I2C_STATE_READY; + + if(hi2c->Mode == HAL_I2C_MODE_MEM) + { + hi2c->Mode = HAL_I2C_MODE_NONE; + + HAL_I2C_MemTxCpltCallback(hi2c); + } + else + { + hi2c->Mode = HAL_I2C_MODE_NONE; + + HAL_I2C_MasterTxCpltCallback(hi2c); + } + } + } + } + return HAL_OK; +} + +/** + * @brief Handle RXNE flag for Master + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c) +{ + + if(hi2c->State == HAL_I2C_STATE_BUSY_RX) + { + uint32_t tmp = 0U; + + tmp = hi2c->XferCount; + if(tmp > 3U) + { + /* Read data from DR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->DR; + hi2c->XferCount--; + } + else if((tmp == 2U) || (tmp == 3U)) + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Enable Pos */ + hi2c->Instance->CR1 |= I2C_CR1_POS; + + /* Disable BUF interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF); + } + else + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + if(hi2c->XferOptions == I2C_NEXT_FRAME) + { + /* Enable Pos */ + hi2c->Instance->CR1 |= I2C_CR1_POS; + } + + /* Disable EVT, BUF and ERR interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + /* Read data from DR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->DR; + hi2c->XferCount--; + + tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK; + hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode); + hi2c->State = HAL_I2C_STATE_READY; + + if(hi2c->Mode == HAL_I2C_MODE_MEM) + { + hi2c->Mode = HAL_I2C_MODE_NONE; + HAL_I2C_MemRxCpltCallback(hi2c); + } + else + { + hi2c->Mode = HAL_I2C_MODE_NONE; + HAL_I2C_MasterRxCpltCallback(hi2c); + } + } + } + return HAL_OK; +} + +/** + * @brief Handle BTF flag for Master receiver + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_MasterReceive_BTF(I2C_HandleTypeDef *hi2c) +{ + /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ + uint32_t tmp; + uint32_t CurrentXferOptions = hi2c->XferOptions; + + if(hi2c->XferCount == 3U) + { + if((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME) || (CurrentXferOptions == I2C_NO_OPTION_FRAME)) + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + } + + /* Read data from DR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->DR; + hi2c->XferCount--; + } + else if(hi2c->XferCount == 2U) + { + /* Prepare next transfer or stop current transfer */ + if((CurrentXferOptions != I2C_FIRST_AND_LAST_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME) && (CurrentXferOptions != I2C_NO_OPTION_FRAME)) + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + if((CurrentXferOptions == I2C_NEXT_FRAME) || (CurrentXferOptions == I2C_FIRST_FRAME)) + { + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + } + tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK; + hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode); + } + else + { + hi2c->PreviousState = I2C_STATE_MASTER_BUSY_RX; + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + } + + /* Read data from DR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->DR; + hi2c->XferCount--; + + /* Read data from DR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->DR; + hi2c->XferCount--; + + /* Disable EVT and ERR interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->PreviousState = I2C_STATE_NONE; + + if(hi2c->Mode == HAL_I2C_MODE_MEM) + { + hi2c->Mode = HAL_I2C_MODE_NONE; + + HAL_I2C_MemRxCpltCallback(hi2c); + } + else + { + hi2c->Mode = HAL_I2C_MODE_NONE; + + HAL_I2C_MasterRxCpltCallback(hi2c); + } + } + else + { + /* Read data from DR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->DR; + hi2c->XferCount--; + } + return HAL_OK; +} + +/** + * @brief Handle SB flag for Master + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ + +static HAL_StatusTypeDef I2C_Master_SB(I2C_HandleTypeDef *hi2c) +{ + if(hi2c->Mode == HAL_I2C_MODE_MEM) + { + if(hi2c->EventCount == 0U) + { + /* Send slave address */ + hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(hi2c->Devaddress); + } + else + { + hi2c->Instance->DR = I2C_7BIT_ADD_READ(hi2c->Devaddress); + } + } + else + { + if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT) + { + /* Send slave 7 Bits address */ + if(hi2c->State == HAL_I2C_STATE_BUSY_TX) + { + hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(hi2c->Devaddress); + } + else + { + hi2c->Instance->DR = I2C_7BIT_ADD_READ(hi2c->Devaddress); + } + } + else + { + if(hi2c->EventCount == 0U) + { + /* Send header of slave address */ + hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(hi2c->Devaddress); + } + else if(hi2c->EventCount == 1U) + { + /* Send header of slave address */ + hi2c->Instance->DR = I2C_10BIT_HEADER_READ(hi2c->Devaddress); + } + } + } + + return HAL_OK; +} + +/** + * @brief Handle ADD10 flag for Master + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_Master_ADD10(I2C_HandleTypeDef *hi2c) +{ + /* Send slave address */ + hi2c->Instance->DR = I2C_10BIT_ADDRESS(hi2c->Devaddress); + + return HAL_OK; +} + +/** + * @brief Handle ADDR flag for Master + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_Master_ADDR(I2C_HandleTypeDef *hi2c) +{ + /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ + uint32_t CurrentMode = hi2c->Mode; + uint32_t CurrentXferOptions = hi2c->XferOptions; + uint32_t Prev_State = hi2c->PreviousState; + + if(hi2c->State == HAL_I2C_STATE_BUSY_RX) + { + if((hi2c->EventCount == 0U) && (CurrentMode == HAL_I2C_MODE_MEM)) + { + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + else if((hi2c->EventCount == 0U) && (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT)) + { + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Generate Restart */ + hi2c->Instance->CR1 |= I2C_CR1_START; + + hi2c->EventCount++; + } + else + { + if(hi2c->XferCount == 0U) + { + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + } + else if(hi2c->XferCount == 1U) + { + /* Prepare next transfer or stop current transfer */ + if((CurrentXferOptions != I2C_FIRST_AND_LAST_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME) \ + && (Prev_State != I2C_STATE_MASTER_BUSY_RX)) + { + if(hi2c->XferOptions != I2C_NEXT_FRAME) + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + } + else + { + /* Enable Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + else + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + } + } + else if(hi2c->XferCount == 2U) + { + if(hi2c->XferOptions != I2C_NEXT_FRAME) + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Enable Pos */ + hi2c->Instance->CR1 |= I2C_CR1_POS; + } + else + { + /* Enable Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + else + { + /* Enable Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + + /* Reset Event counter */ + hi2c->EventCount = 0; + } + } + else + { + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + } + + return HAL_OK; +} + +/** + * @brief Handle TXE flag for Slave + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c) +{ + /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ + uint32_t tmp; + uint32_t CurrentState = hi2c->State; + + if(hi2c->XferCount != 0U) + { + /* Write data to DR */ + hi2c->Instance->DR = (*hi2c->pBuffPtr++); + hi2c->XferCount--; + + if((hi2c->XferCount == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN)) + { + /* Last Byte is received, disable Interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF); + + /* Set state at HAL_I2C_STATE_LISTEN */ + tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK; + hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode); + hi2c->State = HAL_I2C_STATE_LISTEN; + + /* Call the Tx complete callback to inform upper layer of the end of receive process */ + HAL_I2C_SlaveTxCpltCallback(hi2c); + } + } + return HAL_OK; +} + +/** + * @brief Handle BTF flag for Slave transmitter + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c) +{ + if(hi2c->XferCount != 0U) + { + /* Write data to DR */ + hi2c->Instance->DR = (*hi2c->pBuffPtr++); + hi2c->XferCount--; + } + return HAL_OK; +} + +/** + * @brief Handle RXNE flag for Slave + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c) +{ + /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ + uint32_t tmp; + uint32_t CurrentState = hi2c->State; + + if(hi2c->XferCount != 0U) + { + /* Read data from DR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->DR; + hi2c->XferCount--; + + if((hi2c->XferCount == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN)) + { + /* Last Byte is received, disable Interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF); + + /* Set state at HAL_I2C_STATE_LISTEN */ + tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK; + hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode); + hi2c->State = HAL_I2C_STATE_LISTEN; + + /* Call the Rx complete callback to inform upper layer of the end of receive process */ + HAL_I2C_SlaveRxCpltCallback(hi2c); + } + } + return HAL_OK; +} + +/** + * @brief Handle BTF flag for Slave receiver + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c) +{ + if(hi2c->XferCount != 0U) + { + /* Read data from DR */ + (*hi2c->pBuffPtr++) = hi2c->Instance->DR; + hi2c->XferCount--; + } + return HAL_OK; +} + +/** + * @brief Handle ADD flag for Slave + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c) +{ + uint8_t TransferDirection = I2C_DIRECTION_RECEIVE; + uint16_t SlaveAddrCode = 0U; + + /* Transfer Direction requested by Master */ + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TRA) == RESET) + { + TransferDirection = I2C_DIRECTION_TRANSMIT; + } + + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_DUALF) == RESET) + { + SlaveAddrCode = hi2c->Init.OwnAddress1; + } + else + { + SlaveAddrCode = hi2c->Init.OwnAddress2; + } + + /* Call Slave Addr callback */ + HAL_I2C_AddrCallback(hi2c, TransferDirection, SlaveAddrCode); + + return HAL_OK; +} + +/** + * @brief Handle STOPF flag for Slave + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c) +{ + /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ + uint32_t CurrentState = hi2c->State; + + /* Disable EVT, BUF and ERR interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + /* Clear STOPF flag */ + __HAL_I2C_CLEAR_STOPFLAG(hi2c); + + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + if((CurrentState == HAL_I2C_STATE_LISTEN ) || (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN) || \ + (CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN)) + { + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */ + HAL_I2C_ListenCpltCallback(hi2c); + } + else + { + if((hi2c->PreviousState == I2C_STATE_SLAVE_BUSY_RX) || (CurrentState == HAL_I2C_STATE_BUSY_RX)) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + HAL_I2C_SlaveRxCpltCallback(hi2c); + } + } + + return HAL_OK; +} + +/** + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_Slave_AF(I2C_HandleTypeDef *hi2c) +{ + /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ + uint32_t CurrentState = hi2c->State; + uint32_t CurrentXferOptions = hi2c->XferOptions; + uint32_t tmp; + + if(((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME)) && \ + (CurrentState == HAL_I2C_STATE_LISTEN)) + { + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + + /* Disable EVT, BUF and ERR interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + /* Clear AF flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */ + HAL_I2C_ListenCpltCallback(hi2c); + } + else if(CurrentState == HAL_I2C_STATE_BUSY_TX) + { + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK; + hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode); + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Disable EVT, BUF and ERR interrupt */ + __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); + + /* Clear AF flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + HAL_I2C_SlaveTxCpltCallback(hi2c); + } + else + { + /* Clear AF flag only */ + /* State Listen, but XferOptions == FIRST or NEXT */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + } + + return HAL_OK; +} + +/** + * @brief I2C interrupts error process + * @param hi2c I2C handle. + * @retval None + */ +static void I2C_ITError(I2C_HandleTypeDef *hi2c) +{ + /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ + uint32_t CurrentState = hi2c->State; + + if((CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN) || (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN)) + { + /* keep HAL_I2C_STATE_LISTEN */ + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State = HAL_I2C_STATE_LISTEN; + } + else + { + /* If state is an abort treatment on going, don't change state */ + /* This change will be do later */ + if(hi2c->State != HAL_I2C_STATE_ABORT) + { + hi2c->State = HAL_I2C_STATE_READY; + } + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->Mode = HAL_I2C_MODE_NONE; + } + + /* Disable Pos bit in I2C CR1 when error occurred in Master/Mem Receive IT Process */ + hi2c->Instance->CR1 &= ~I2C_CR1_POS; + + /* Abort DMA transfer */ + if((hi2c->Instance->CR1 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) + { + hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN; + + if(hi2c->hdmatx != NULL) + { + /* Set the DMA Abort callback : + will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ + hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort; + + if(HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK) + { + /* Call Directly XferAbortCallback function in case of error */ + hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx); + } + } + else if(hi2c->hdmarx != NULL) + { + /* Set the DMA Abort callback : + will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ + hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort; + + if(HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK) + { + /* Call Directly hi2c->hdmarx->XferAbortCallback function in case of error */ + hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx); + } + } + } + else if(hi2c->State == HAL_I2C_STATE_ABORT) + { + hi2c->State = HAL_I2C_STATE_READY; + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + HAL_I2C_AbortCpltCallback(hi2c); + } + else + { + /* Call user error callback */ + HAL_I2C_ErrorCallback(hi2c); + } + /* STOP Flag is not set after a NACK reception */ + /* So may inform upper layer that listen phase is stopped */ + /* during NACK error treatment */ + if((hi2c->State == HAL_I2C_STATE_LISTEN) && ((hi2c->ErrorCode & HAL_I2C_ERROR_AF) == HAL_I2C_ERROR_AF)) + { + hi2c->XferOptions = I2C_NO_OPTION_FRAME; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */ + HAL_I2C_ListenCpltCallback(hi2c); + } +} + +/** + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_MasterRequestWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart) +{ + /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ + uint32_t CurrentXferOptions = hi2c->XferOptions; + + /* Generate Start condition if first transfer */ + if((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_NO_OPTION_FRAME)) + { + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + } + else if(hi2c->PreviousState == I2C_STATE_MASTER_BUSY_RX) + { + /* Generate ReStart */ + hi2c->Instance->CR1 |= I2C_CR1_START; + } + + /* Wait until SB flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT) + { + /* Send slave address */ + hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress); + } + else + { + /* Send header of slave address */ + hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(DevAddress); + + /* Wait until ADD10 flag is set */ + if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADD10, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Send slave address */ + hi2c->Instance->DR = I2C_10BIT_ADDRESS(DevAddress); + } + + /* Wait until ADDR flag is set */ + if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + return HAL_OK; +} + +/** + * @brief Master sends target device address for read request. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address: The device 7 bits address value + * in datasheet must be shift at right before call interface + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_MasterRequestRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart) +{ + /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ + uint32_t CurrentXferOptions = hi2c->XferOptions; + + /* Generate Start condition if first transfer */ + if((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_NO_OPTION_FRAME)) + { + /* Enable Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + } + else if(hi2c->PreviousState == I2C_STATE_MASTER_BUSY_TX) + { + /* Enable Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Generate ReStart */ + hi2c->Instance->CR1 |= I2C_CR1_START; + } + + /* Wait until SB flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT) + { + /* Send slave address */ + hi2c->Instance->DR = I2C_7BIT_ADD_READ(DevAddress); + } + else + { + /* Send header of slave address */ + hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(DevAddress); + + /* Wait until ADD10 flag is set */ + if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADD10, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Send slave address */ + hi2c->Instance->DR = I2C_10BIT_ADDRESS(DevAddress); + + /* Wait until ADDR flag is set */ + if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Generate Restart */ + hi2c->Instance->CR1 |= I2C_CR1_START; + + /* Wait until SB flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Send header of slave address */ + hi2c->Instance->DR = I2C_10BIT_HEADER_READ(DevAddress); + } + + /* Wait until ADDR flag is set */ + if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + return HAL_OK; +} + +/** + * @brief Master sends target device address followed by internal memory address for write request. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart) +{ + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + + /* Wait until SB flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Send slave address */ + hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress); + + /* Wait until ADDR flag is set */ + if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Wait until TXE flag is set */ + if(I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* If Memory address size is 8Bit */ + if(MemAddSize == I2C_MEMADD_SIZE_8BIT) + { + /* Send Memory Address */ + hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress); + } + /* If Memory address size is 16Bit */ + else + { + /* Send MSB of Memory Address */ + hi2c->Instance->DR = I2C_MEM_ADD_MSB(MemAddress); + + /* Wait until TXE flag is set */ + if(I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Send LSB of Memory Address */ + hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress); + } + + return HAL_OK; +} + +/** + * @brief Master sends target device address followed by internal memory address for read request. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param DevAddress Target device address + * @param MemAddress Internal memory address + * @param MemAddSize Size of internal memory address + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart) +{ + /* Enable Acknowledge */ + hi2c->Instance->CR1 |= I2C_CR1_ACK; + + /* Generate Start */ + hi2c->Instance->CR1 |= I2C_CR1_START; + + /* Wait until SB flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Send slave address */ + hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress); + + /* Wait until ADDR flag is set */ + if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Clear ADDR flag */ + __HAL_I2C_CLEAR_ADDRFLAG(hi2c); + + /* Wait until TXE flag is set */ + if(I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* If Memory address size is 8Bit */ + if(MemAddSize == I2C_MEMADD_SIZE_8BIT) + { + /* Send Memory Address */ + hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress); + } + /* If Memory address size is 16Bit */ + else + { + /* Send MSB of Memory Address */ + hi2c->Instance->DR = I2C_MEM_ADD_MSB(MemAddress); + + /* Wait until TXE flag is set */ + if(I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Send LSB of Memory Address */ + hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress); + } + + /* Wait until TXE flag is set */ + if(I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + /* Generate Restart */ + hi2c->Instance->CR1 |= I2C_CR1_START; + + /* Wait until SB flag is set */ + if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Send slave address */ + hi2c->Instance->DR = I2C_7BIT_ADD_READ(DevAddress); + + /* Wait until ADDR flag is set */ + if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) + { + if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) + { + return HAL_ERROR; + } + else + { + return HAL_TIMEOUT; + } + } + + return HAL_OK; +} + +/** + * @brief DMA I2C process complete callback. + * @param hdma DMA handle + * @retval None + */ +static void I2C_DMAXferCplt(DMA_HandleTypeDef *hdma) +{ + I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; + + /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ + uint32_t CurrentState = hi2c->State; + uint32_t CurrentMode = hi2c->Mode; + + if((CurrentState == HAL_I2C_STATE_BUSY_TX) || ((CurrentState == HAL_I2C_STATE_BUSY_RX) && (CurrentMode == HAL_I2C_MODE_SLAVE))) + { + /* Disable DMA Request */ + hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN; + + hi2c->XferCount = 0U; + + /* Enable EVT and ERR interrupt */ + __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); + } + else + { + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + /* Disable Last DMA */ + hi2c->Instance->CR2 &= ~I2C_CR2_LAST; + + /* Disable DMA Request */ + hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN; + + hi2c->XferCount = 0U; + + /* Check if Errors has been detected during transfer */ + if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE) + { + HAL_I2C_ErrorCallback(hi2c); + } + else + { + hi2c->State = HAL_I2C_STATE_READY; + + if(hi2c->Mode == HAL_I2C_MODE_MEM) + { + hi2c->Mode = HAL_I2C_MODE_NONE; + + HAL_I2C_MemRxCpltCallback(hi2c); + } + else + { + hi2c->Mode = HAL_I2C_MODE_NONE; + + HAL_I2C_MasterRxCpltCallback(hi2c); + } + } + } +} + +/** + * @brief DMA I2C communication error callback. + * @param hdma DMA handle + * @retval None + */ +static void I2C_DMAError(DMA_HandleTypeDef *hdma) +{ + I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; + + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + hi2c->XferCount = 0U; + + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; + + HAL_I2C_ErrorCallback(hi2c); +} + +/** + * @brief DMA I2C communication abort callback + * (To be called at end of DMA Abort procedure). + * @param hdma: DMA handle. + * @retval None + */ +static void I2C_DMAAbort(DMA_HandleTypeDef *hdma) +{ + I2C_HandleTypeDef* hi2c = ( I2C_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Disable Acknowledge */ + hi2c->Instance->CR1 &= ~I2C_CR1_ACK; + + hi2c->XferCount = 0U; + + /* Reset XferAbortCallback */ + hi2c->hdmatx->XferAbortCallback = NULL; + hi2c->hdmarx->XferAbortCallback = NULL; + + /* Check if come from abort from user */ + if(hi2c->State == HAL_I2C_STATE_ABORT) + { + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + HAL_I2C_AbortCpltCallback(hi2c); + } + else + { + hi2c->State = HAL_I2C_STATE_READY; + hi2c->Mode = HAL_I2C_MODE_NONE; + + /* Call the corresponding callback to inform upper layer of End of Transfer */ + HAL_I2C_ErrorCallback(hi2c); + } +} + +/** + * @brief This function handles I2C Communication Timeout. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param Flag specifies the I2C flag to check. + * @param Status The new Flag status (SET or RESET). + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart) +{ + /* Wait until flag is set */ + while((__HAL_I2C_GET_FLAG(hi2c, Flag) ? SET : RESET) == Status) + { + /* Check for the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U)||((HAL_GetTick() - Tickstart ) > Timeout)) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + } + + return HAL_OK; +} + +/** + * @brief This function handles I2C Communication Timeout for Master addressing phase. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for I2C module + * @param Flag specifies the I2C flag to check. + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_WaitOnMasterAddressFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, uint32_t Timeout, uint32_t Tickstart) +{ + while(__HAL_I2C_GET_FLAG(hi2c, Flag) == RESET) + { + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET) + { + /* Generate Stop */ + hi2c->Instance->CR1 |= I2C_CR1_STOP; + + /* Clear AF Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + hi2c->ErrorCode = HAL_I2C_ERROR_AF; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_ERROR; + } + + /* Check for the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U)||((HAL_GetTick() - Tickstart ) > Timeout)) + { + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + } + return HAL_OK; +} + +/** + * @brief This function handles I2C Communication Timeout for specific usage of TXE flag. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_WaitOnTXEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) +{ + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXE) == RESET) + { + /* Check if a NACK is detected */ + if(I2C_IsAcknowledgeFailed(hi2c) != HAL_OK) + { + return HAL_ERROR; + } + + /* Check for the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((HAL_GetTick()-Tickstart) > Timeout)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + } + return HAL_OK; +} + +/** + * @brief This function handles I2C Communication Timeout for specific usage of BTF flag. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_WaitOnBTFFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) +{ + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == RESET) + { + /* Check if a NACK is detected */ + if(I2C_IsAcknowledgeFailed(hi2c) != HAL_OK) + { + return HAL_ERROR; + } + + /* Check for the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((HAL_GetTick()-Tickstart) > Timeout)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + } + return HAL_OK; +} + +/** + * @brief This function handles I2C Communication Timeout for specific usage of STOP flag. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) +{ + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == RESET) + { + /* Check if a NACK is detected */ + if(I2C_IsAcknowledgeFailed(hi2c) != HAL_OK) + { + return HAL_ERROR; + } + + /* Check for the Timeout */ + if((Timeout == 0U) || ((HAL_GetTick()-Tickstart) > Timeout)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + return HAL_OK; +} + +/** + * @brief This function handles I2C Communication Timeout for specific usage of RXNE flag. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @param Timeout Timeout duration + * @param Tickstart Tick start value + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) +{ + + while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == RESET) + { + /* Check if a STOPF is detected */ + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET) + { + /* Clear STOP Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); + + hi2c->ErrorCode = HAL_I2C_ERROR_NONE; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_ERROR; + } + + /* Check for the Timeout */ + if((Timeout == 0U) || ((HAL_GetTick()-Tickstart) > Timeout)) + { + hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_TIMEOUT; + } + } + return HAL_OK; +} + +/** + * @brief This function handles Acknowledge failed detection during an I2C Communication. + * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains + * the configuration information for the specified I2C. + * @retval HAL status + */ +static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c) +{ + if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET) + { + /* Clear NACKF Flag */ + __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); + + hi2c->ErrorCode = HAL_I2C_ERROR_AF; + hi2c->PreviousState = I2C_STATE_NONE; + hi2c->State= HAL_I2C_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2c); + + return HAL_ERROR; + } + return HAL_OK; +} +/** + * @} + */ + +#endif /* HAL_I2C_MODULE_ENABLED */ + +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/