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Diff: targets/cmsis/TARGET_STM/TARGET_STM32F3/stm32f3xx_hal_i2c.c
- Revision:
- 385:be64abf45658
- Parent:
- 330:c80ac197fa6a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32F3/stm32f3xx_hal_i2c.c Tue Nov 04 09:45:07 2014 +0000
@@ -0,0 +1,4163 @@
+/**
+ ******************************************************************************
+ * @file stm32f3xx_hal_i2c.c
+ * @author MCD Application Team
+ * @version V1.1.0
+ * @date 12-Sept-2014
+ * @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 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 channel
+ (+++) Enable the DMAx interface clock using
+ (+++) Configure the DMA handle parameters
+ (+++) Configure the DMA Tx or Rx channel
+ (+++) Associate the initilalized 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 channel
+
+ (#) Configure the Communication Clock Timing, Own Address1, Master Adressing Mode, Dual Addressing mode,
+ Own Address2, Own Address2 Mask, General call and Nostretch mode in the hi2c Init structure.
+
+ (#) Initialize the I2C registers by calling the HAL_I2C_Init() API:
+ (+++) These API's configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)
+ by calling the customed 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 mode of operations 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 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 : Clears the specified I2C pending flag
+ (+) __HAL_I2C_ENABLE_IT: Enables the specified I2C interrupt
+ (+) __HAL_I2C_DISABLE_IT: Disables the specified I2C interrupt
+
+ [..]
+ (@) You can refer to the I2C HAL driver header file for more useful macros
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2014 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 "stm32f3xx_hal.h"
+
+/** @addtogroup STM32F3xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup I2C I2C HAL module driver
+ * @brief I2C HAL module driver
+ * @{
+ */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+
+/** @defgroup I2C_Private_Define I2C Private Define
+ * @{
+ */
+#define TIMING_CLEAR_MASK ((uint32_t)0xF0FFFFFF) /*<! I2C TIMING clear register Mask */
+#define I2C_TIMEOUT_ADDR ((uint32_t)10000) /* 10 s */
+#define I2C_TIMEOUT_BUSY ((uint32_t)25) /* 25 ms */
+#define I2C_TIMEOUT_DIR ((uint32_t)25) /* 25 ms */
+#define I2C_TIMEOUT_RXNE ((uint32_t)25) /* 25 ms */
+#define I2C_TIMEOUT_STOPF ((uint32_t)25) /* 25 ms */
+#define I2C_TIMEOUT_TC ((uint32_t)25) /* 25 ms */
+#define I2C_TIMEOUT_TCR ((uint32_t)25) /* 25 ms */
+#define I2C_TIMEOUT_TXIS ((uint32_t)25) /* 25 ms */
+#define I2C_TIMEOUT_FLAG ((uint32_t)25) /* 25 ms */
+/**
+ * @}
+ */
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+
+/** @defgroup I2C_Private_Functions I2C Private Functions
+ * @{
+ */
+static void I2C_DMAMasterTransmitCplt(DMA_HandleTypeDef *hdma);
+static void I2C_DMAMasterReceiveCplt(DMA_HandleTypeDef *hdma);
+static void I2C_DMASlaveTransmitCplt(DMA_HandleTypeDef *hdma);
+static void I2C_DMASlaveReceiveCplt(DMA_HandleTypeDef *hdma);
+static void I2C_DMAMemTransmitCplt(DMA_HandleTypeDef *hdma);
+static void I2C_DMAMemReceiveCplt(DMA_HandleTypeDef *hdma);
+static void I2C_DMAError(DMA_HandleTypeDef *hdma);
+
+static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout);
+static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout);
+static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout);
+static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout);
+static HAL_StatusTypeDef I2C_WaitOnTXISFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout);
+static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout);
+static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout);
+static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c, uint32_t Timeout);
+
+static HAL_StatusTypeDef I2C_MasterTransmit_ISR(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_MasterReceive_ISR(I2C_HandleTypeDef *hi2c);
+
+static HAL_StatusTypeDef I2C_SlaveTransmit_ISR(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_SlaveReceive_ISR(I2C_HandleTypeDef *hi2c);
+
+static void I2C_TransferConfig(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t Size, uint32_t Mode, uint32_t Request);
+/**
+ * @}
+ */
+
+/* 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/de-initialization functions #####
+ ===============================================================================
+ [..] This subsection provides a set of functions allowing to initialize and
+ de-initialiaze 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:
+ (++) Clock Timing
+ (++) Own Address 1
+ (++) Addressing mode (Master, Slave)
+ (++) Dual Addressing mode
+ (++) Own Address 2
+ (++) Own Address 2 Mask
+ (++) General call mode
+ (++) Nostretch mode
+
+ (+) Call the function HAL_I2C_DeInit() to restore the default configuration
+ of the selected I2Cx periperal.
+
+@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 the specified I2C.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c)
+{
+ /* Check the I2C handle allocation */
+ if(hi2c == HAL_NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+ 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_OWN_ADDRESS2_MASK(hi2c->Init.OwnAddress2Masks));
+ 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)
+ {
+ /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */
+ HAL_I2C_MspInit(hi2c);
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+
+ /* Disable the selected I2C peripheral */
+ __HAL_I2C_DISABLE(hi2c);
+
+ /*---------------------------- I2Cx TIMINGR Configuration ------------------*/
+ /* Configure I2Cx: Frequency range */
+ hi2c->Instance->TIMINGR = hi2c->Init.Timing & TIMING_CLEAR_MASK;
+
+ /*---------------------------- I2Cx OAR1 Configuration ---------------------*/
+ /* Configure I2Cx: Own Address1 and ack own address1 mode */
+ hi2c->Instance->OAR1 &= ~I2C_OAR1_OA1EN;
+ if(hi2c->Init.OwnAddress1 != 0)
+ {
+ if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT)
+ {
+ hi2c->Instance->OAR1 = (I2C_OAR1_OA1EN | hi2c->Init.OwnAddress1);
+ }
+ else /* I2C_ADDRESSINGMODE_10BIT */
+ {
+ hi2c->Instance->OAR1 = (I2C_OAR1_OA1EN | I2C_OAR1_OA1MODE | hi2c->Init.OwnAddress1);
+ }
+ }
+
+ /*---------------------------- I2Cx CR2 Configuration ----------------------*/
+ /* Configure I2Cx: Addressing Master mode */
+ if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT)
+ {
+ hi2c->Instance->CR2 = (I2C_CR2_ADD10);
+ }
+ /* Enable the AUTOEND by default, and enable NACK (should be disable only during Slave process */
+ hi2c->Instance->CR2 |= (I2C_CR2_AUTOEND | I2C_CR2_NACK);
+
+ /*---------------------------- I2Cx OAR2 Configuration ---------------------*/
+ /* Configure I2Cx: Dual mode and Own Address2 */
+ hi2c->Instance->OAR2 = (hi2c->Init.DualAddressMode | hi2c->Init.OwnAddress2 | (hi2c->Init.OwnAddress2Masks << 8));
+
+ /*---------------------------- I2Cx CR1 Configuration ----------------------*/
+ /* Configure I2Cx: Generalcall and NoStretch mode */
+ hi2c->Instance->CR1 = (hi2c->Init.GeneralCallMode | hi2c->Init.NoStretchMode);
+
+ /* Enable the selected I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DeInitializes the I2C peripheral.
+ * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c)
+{
+ /* Check the I2C handle allocation */
+ if(hi2c == HAL_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;
+
+ /* 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 the specified I2C.
+ * @retval None
+ */
+ __weak void HAL_I2C_MspInit(I2C_HandleTypeDef *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 the specified I2C.
+ * @retval None
+ */
+ __weak void HAL_I2C_MspDeInit(I2C_HandleTypeDef *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 Input and Output 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 is two mode 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_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 No_Blocking mode:
+ (++) HAL_I2C_MemTxCpltCallback()
+ (++) HAL_I2C_MemRxCpltCallback()
+ (++) HAL_I2C_MasterTxCpltCallback()
+ (++) HAL_I2C_MasterRxCpltCallback()
+ (++) HAL_I2C_SlaveTxCpltCallback()
+ (++) HAL_I2C_SlaveRxCpltCallback()
+ (++) HAL_I2C_ErrorCallback()
+
+@endverbatim
+ * @{
+ */
+
+/** @defgroup Blocking_mode_Polling Blocking mode Polling
+ * @{
+ */
+
+/**
+ * @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 the specified I2C.
+ * @param DevAddress: Target device 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_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t sizetmp = 0;
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MASTER_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 and generate RESTART */
+ /* Size > 255, need to set RELOAD bit */
+ if(Size > 255)
+ {
+ I2C_TransferConfig(hi2c,DevAddress,255, I2C_RELOAD_MODE, I2C_GENERATE_START_WRITE);
+ sizetmp = 255;
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,Size, I2C_AUTOEND_MODE, I2C_GENERATE_START_WRITE);
+ sizetmp = Size;
+ }
+
+ do
+ {
+ /* Wait until TXIS flag is set */
+ if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ /* Write data to TXDR */
+ hi2c->Instance->TXDR = (*pData++);
+ sizetmp--;
+ Size--;
+
+ if((sizetmp == 0)&&(Size!=0))
+ {
+ /* Wait until TXE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ if(Size > 255)
+ {
+ I2C_TransferConfig(hi2c,DevAddress,255, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ sizetmp = 255;
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,Size, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ sizetmp = Size;
+ }
+ }
+
+ }while(Size > 0);
+
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is set */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* 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 the specified I2C.
+ * @param DevAddress: Target device 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_Master_Receive(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t sizetmp = 0;
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MASTER_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 and generate RESTART */
+ /* Size > 255, need to set RELOAD bit */
+ if(Size > 255)
+ {
+ I2C_TransferConfig(hi2c,DevAddress,255, I2C_RELOAD_MODE, I2C_GENERATE_START_READ);
+ sizetmp = 255;
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,Size, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ);
+ sizetmp = Size;
+ }
+
+ do
+ {
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Write data to RXDR */
+ (*pData++) =hi2c->Instance->RXDR;
+ sizetmp--;
+ Size--;
+
+ if((sizetmp == 0)&&(Size!=0))
+ {
+ /* Wait until TCR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ if(Size > 255)
+ {
+ I2C_TransferConfig(hi2c,DevAddress,255, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ sizetmp = 255;
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,Size, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ sizetmp = Size;
+ }
+ }
+
+ }while(Size > 0);
+
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is set */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* 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 the specified I2C.
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_SLAVE_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR);
+
+ /* 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) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR);
+ }
+
+ /* Wait until DIR flag is set Transmitter mode */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_DIR, RESET, Timeout) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+ do
+ {
+ /* Wait until TXIS flag is set */
+ if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Read data from TXDR */
+ hi2c->Instance->TXDR = (*pData++);
+ Size--;
+ }while(Size > 0);
+
+ /* Wait until STOP flag is set */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Normal use case for Transmitter mode */
+ /* A NACK is generated to confirm the end of transfer */
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_STOPF);
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, Timeout) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* 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 the specified I2C.
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_SLAVE_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR);
+
+ /* Wait until DIR flag is reset Receiver mode */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_DIR, SET, Timeout) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+ while(Size > 0)
+ {
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT)
+ {
+ return HAL_TIMEOUT;
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+ }
+
+ /* Read data from RXDR */
+ (*pData++) = hi2c->Instance->RXDR;
+ Size--;
+ }
+
+ /* Wait until STOP flag is set */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_STOPF);
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, Timeout) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+/**
+ * @}
+ */
+
+/** @addtogroup Non_Blocking_mode_Interrupt Non Blocking mode Interrupt
+ * @{
+ */
+
+/**
+ * @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 the specified I2C.
+ * @param DevAddress: Target device address
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MASTER_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ if(Size > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = Size;
+ }
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 and generate RESTART */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_WRITE);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_WRITE);
+ }
+
+ /* 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, TC, STOP, NACK, TXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ __HAL_I2C_ENABLE_IT(hi2c,I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_TXI );
+
+ 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 the specified I2C.
+ * @param DevAddress: Target device address
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MASTER_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ if(Size > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = Size;
+ }
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 and generate RESTART */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_READ);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ);
+ }
+
+ /* 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, TC, STOP, NACK, RXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ __HAL_I2C_ENABLE_IT(hi2c,I2C_IT_ERRI | I2C_IT_TCI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_RXI );
+
+ 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 the specified I2C.
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_SLAVE_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = Size;
+
+ /* 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, TC, STOP, NACK, TXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ __HAL_I2C_ENABLE_IT(hi2c,I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_TXI );
+
+ 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 the specified I2C.
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_SLAVE_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = Size;
+
+ /* 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, TC, STOP, NACK, RXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ __HAL_I2C_ENABLE_IT(hi2c,I2C_IT_ERRI | I2C_IT_TCI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @}
+ */
+
+/** @addtogroup Non_Blocking_mode_DMA Non Blocking mode DMA
+ * @{
+ */
+
+/**
+ * @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 the specified I2C.
+ * @param DevAddress: Target device address
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MASTER_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ if(Size > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = Size;
+ }
+
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMAMasterTransmitCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Enable the DMA channel */
+ HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize);
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 and generate RESTART */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_WRITE);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_WRITE);
+ }
+
+ /* Wait until TXIS flag is set */
+ if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, I2C_TIMEOUT_TXIS) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN;
+
+ /* 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 the specified I2C.
+ * @param DevAddress: Target device address
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MASTER_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ if(Size > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = Size;
+ }
+
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMAMasterReceiveCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Enable the DMA channel */
+ HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize);
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 and generate RESTART */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_READ);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ);
+ }
+
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, I2C_TIMEOUT_RXNE) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @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 the specified I2C.
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_SLAVE_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = Size;
+
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMASlaveTransmitCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Enable the DMA channel */
+ HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize);
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, I2C_TIMEOUT_ADDR) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR);
+
+ /* If 10bits 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, I2C_TIMEOUT_ADDR) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR);
+ }
+
+ /* Wait until DIR flag is set Transmitter mode */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_DIR, RESET, I2C_TIMEOUT_BUSY) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ 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 the specified I2C.
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_SLAVE_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = Size;
+
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMASlaveReceiveCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Enable the DMA channel */
+ HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, Size);
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, I2C_TIMEOUT_ADDR) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_ADDR);
+
+ /* Wait until DIR flag is set Receiver mode */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_DIR, SET, I2C_TIMEOUT_DIR) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_TIMEOUT;
+ }
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @}
+ */
+
+/** @addtogroup Blocking_mode_Polling Blocking mode Polling
+ * @{
+ */
+
+/**
+ * @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 the specified I2C.
+ * @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 Sizetmp = 0;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MEM_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Send Slave Address and Memory Address */
+ if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, Timeout) != 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;
+ }
+ }
+
+ /* Set NBYTES to write and reload if size > 255 */
+ /* Size > 255, need to set RELOAD bit */
+ if(Size > 255)
+ {
+ I2C_TransferConfig(hi2c,DevAddress,255, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ Sizetmp = 255;
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,Size, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ Sizetmp = Size;
+ }
+
+ do
+ {
+ /* Wait until TXIS flag is set */
+ if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Write data to DR */
+ hi2c->Instance->TXDR = (*pData++);
+ Sizetmp--;
+ Size--;
+
+ if((Sizetmp == 0)&&(Size!=0))
+ {
+ /* Wait until TCR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+
+ if(Size > 255)
+ {
+ I2C_TransferConfig(hi2c,DevAddress,255, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ Sizetmp = 255;
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,Size, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ Sizetmp = Size;
+ }
+ }
+
+ }while(Size > 0);
+
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* 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 the specified I2C.
+ * @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 Sizetmp = 0;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MEM_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Send Slave Address and Memory Address */
+ if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, Timeout) != 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;
+ }
+ }
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 and generate RESTART */
+ /* Size > 255, need to set RELOAD bit */
+ if(Size > 255)
+ {
+ I2C_TransferConfig(hi2c,DevAddress,255, I2C_RELOAD_MODE, I2C_GENERATE_START_READ);
+ Sizetmp = 255;
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,Size, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ);
+ Sizetmp = Size;
+ }
+
+ do
+ {
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Read data from RXDR */
+ (*pData++) = hi2c->Instance->RXDR;
+
+ /* Decrement the Size counter */
+ Sizetmp--;
+ Size--;
+
+ if((Sizetmp == 0)&&(Size!=0))
+ {
+ /* Wait until TCR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ if(Size > 255)
+ {
+ I2C_TransferConfig(hi2c,DevAddress,255, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ Sizetmp = 255;
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,Size, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ Sizetmp = Size;
+ }
+ }
+
+ }while(Size > 0);
+
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+/**
+ * @}
+ */
+
+/** @addtogroup Non_Blocking_mode_Interrupt Non Blocking mode Interrupt
+ * @{
+ */
+
+/**
+ * @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 the specified I2C.
+ * @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)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MEM_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ if(Size > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = Size;
+ }
+
+ /* Send Slave Address and Memory Address */
+ if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG) != 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;
+ }
+ }
+
+ /* Set NBYTES to write and reload if size > 255 */
+ /* Size > 255, need to set RELOAD bit */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+
+ /* 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, TC, STOP, NACK, TXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ __HAL_I2C_ENABLE_IT(hi2c,I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_TXI );
+
+ 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 the specified I2C.
+ * @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)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MEM_BUSY_RX;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ if(Size > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = Size;
+ }
+
+ /* Send Slave Address and Memory Address */
+ if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG) != 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;
+ }
+ }
+
+ /* Set NBYTES to write and reload if size > 255 and generate RESTART */
+ /* Size > 255, need to set RELOAD bit */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_READ);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ);
+ }
+
+ /* 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, TC, STOP, NACK, RXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_RXI );
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @}
+ */
+
+/** @addtogroup Non_Blocking_mode_DMA Non Blocking mode DMA
+ * @{
+ */
+
+/**
+ * @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 the specified I2C.
+ * @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)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MEM_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ if(Size > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = Size;
+ }
+
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMAMemTransmitCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Enable the DMA channel */
+ HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize);
+
+ /* Send Slave Address and Memory Address */
+ if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG) != 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;
+ }
+ }
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+
+ /* Wait until TXIS flag is set */
+ if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, I2C_TIMEOUT_TXIS) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN;
+
+ /* 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 the specified I2C.
+ * @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)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == HAL_NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_MEM_BUSY_RX;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ if(Size > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = Size;
+ }
+
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMAMemReceiveCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Enable the DMA channel */
+ HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize);
+
+ /* Send Slave Address and Memory Address */
+ if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG) != 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;
+ }
+ }
+
+ /* Set NBYTES to write and reload if size > 255 and generate RESTART */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_READ);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ);
+ }
+
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, I2C_TIMEOUT_RXNE) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+/**
+ * @}
+ */
+
+/** @addtogroup Blocking_mode_Polling Blocking mode Polling
+ * @{
+ */
+
+/**
+ * @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 the specified I2C.
+ * @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 = 0;
+
+ __IO uint32_t I2C_Trials = 0;
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ do
+ {
+ /* Generate Start */
+ hi2c->Instance->CR2 = __HAL_I2C_GENERATE_START(hi2c->Init.AddressingMode,DevAddress);
+
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is set or a NACK flag is set*/
+ tickstart = HAL_GetTick();
+ while((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == RESET) && (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == RESET) && (hi2c->State != HAL_I2C_STATE_TIMEOUT))
+ {
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
+ {
+ /* Device is ready */
+ hi2c->State = HAL_I2C_STATE_READY;
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+
+ /* Check if the NACKF flag has not been set */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == RESET)
+ {
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Device is ready */
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Clear STOP Flag, auto generated with autoend*/
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+ }
+
+ /* Check if the maximum allowed number of trials has been reached */
+ if (I2C_Trials++ == Trials)
+ {
+ /* Generate Stop */
+ hi2c->Instance->CR2 |= I2C_CR2_STOP;
+
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+ }
+ }while(I2C_Trials < Trials);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_TIMEOUT;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+/**
+ * @}
+ */
+
+/** @defgroup IRQ_Handler_and_Callbacks IRQ Handler and Callbacks
+ * @{
+ */
+
+/**
+ * @brief This function handles I2C event interrupt request.
+ * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+void HAL_I2C_EV_IRQHandler(I2C_HandleTypeDef *hi2c)
+{
+ /* I2C in mode Transmitter ---------------------------------------------------*/
+ if (((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXIS) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TCR) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TC) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == SET)) && (__HAL_I2C_GET_IT_SOURCE(hi2c, (I2C_IT_TCI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_TXI | I2C_IT_ADDRI)) == SET))
+ {
+ /* Slave mode selected */
+ if (hi2c->State == HAL_I2C_STATE_SLAVE_BUSY_TX)
+ {
+ I2C_SlaveTransmit_ISR(hi2c);
+ }
+ }
+
+ if (((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXIS) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TCR) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TC) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET)) && (__HAL_I2C_GET_IT_SOURCE(hi2c, (I2C_IT_TCI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_TXI)) == SET))
+ {
+ /* Master mode selected */
+ if ((hi2c->State == HAL_I2C_STATE_MASTER_BUSY_TX) || (hi2c->State == HAL_I2C_STATE_MEM_BUSY_TX))
+ {
+ I2C_MasterTransmit_ISR(hi2c);
+ }
+ }
+
+ /* I2C in mode Receiver ----------------------------------------------------*/
+ if (((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TCR) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TC) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == SET)) && (__HAL_I2C_GET_IT_SOURCE(hi2c, (I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_RXI | I2C_IT_ADDRI)) == SET))
+ {
+ /* Slave mode selected */
+ if (hi2c->State == HAL_I2C_STATE_SLAVE_BUSY_RX)
+ {
+ I2C_SlaveReceive_ISR(hi2c);
+ }
+ }
+ if (((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TCR) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TC) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET) || (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET)) && (__HAL_I2C_GET_IT_SOURCE(hi2c, (I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_RXI)) == SET))
+ {
+ /* Master mode selected */
+ if ((hi2c->State == HAL_I2C_STATE_MASTER_BUSY_RX) || (hi2c->State == HAL_I2C_STATE_MEM_BUSY_RX))
+ {
+ I2C_MasterReceive_ISR(hi2c);
+ }
+ }
+}
+
+/**
+ * @brief This function handles I2C error interrupt request.
+ * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c)
+{
+ /* I2C Bus error interrupt occurred ------------------------------------*/
+ if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BERR) == SET) && (__HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_ERRI) == SET))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_BERR;
+
+ /* Clear BERR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_BERR);
+ }
+
+ /* I2C Over-Run/Under-Run interrupt occurred ----------------------------------------*/
+ if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_OVR) == SET) && (__HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_ERRI) == SET))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_OVR;
+
+ /* Clear OVR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_OVR);
+ }
+
+ /* I2C Arbitration Loss error interrupt occurred -------------------------------------*/
+ if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ARLO) == SET) && (__HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_ERRI) == SET))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_ARLO;
+
+ /* Clear ARLO flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ARLO);
+ }
+
+ /* Call the Error Callback in case of Error detected */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+}
+
+/**
+ * @brief Master Tx Transfer completed callbacks.
+ * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+ __weak void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2C_TxCpltCallback could 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 the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2C_TxCpltCallback could 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 the specified I2C.
+ * @retval None
+ */
+ __weak void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2C_TxCpltCallback could 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 the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2C_TxCpltCallback could 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 the specified I2C.
+ * @retval None
+ */
+ __weak void HAL_I2C_MemTxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2C_TxCpltCallback could 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 the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2C_TxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief I2C error callbacks.
+ * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+ __weak void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2C_ErrorCallback 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 and Errors functions #####
+ ===============================================================================
+ [..]
+ This subsection permit to get in run-time the status of the peripheral
+ and the data flow.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Returns the I2C state.
+ * @param hi2c : I2C handle
+ * @retval HAL state
+ */
+HAL_I2C_StateTypeDef HAL_I2C_GetState(I2C_HandleTypeDef *hi2c)
+{
+ return hi2c->State;
+}
+
+/**
+* @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;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup I2C_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Handle Interrupt Flags Master Transmit Mode
+ * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_MasterTransmit_ISR(I2C_HandleTypeDef *hi2c)
+{
+ uint16_t DevAddress;
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXIS) == SET)
+ {
+ /* Write data to TXDR */
+ hi2c->Instance->TXDR = (*hi2c->pBuffPtr++);
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TCR) == SET)
+ {
+ if((hi2c->XferSize == 0)&&(hi2c->XferCount!=0))
+ {
+ DevAddress = (hi2c->Instance->CR2 & I2C_CR2_SADD);
+
+ if(hi2c->XferCount > 255)
+ {
+ I2C_TransferConfig(hi2c,DevAddress,255, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferCount, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ hi2c->XferSize = hi2c->XferCount;
+ }
+ }
+ else
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Wrong size Status regarding TCR flag event */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_SIZE;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TC) == SET)
+ {
+ if(hi2c->XferCount == 0)
+ {
+ /* Generate Stop */
+ hi2c->Instance->CR2 |= I2C_CR2_STOP;
+ }
+ else
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Wrong size Status regarding TCR flag event */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_SIZE;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET)
+ {
+ /* Disable ERR, TC, STOP, NACK, TXI interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c,I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_TXI );
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ if(hi2c->State == HAL_I2C_STATE_MEM_BUSY_TX)
+ {
+ HAL_I2C_MemTxCpltCallback(hi2c);
+ }
+ else
+ {
+ HAL_I2C_MasterTxCpltCallback(hi2c);
+ }
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET)
+ {
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle Interrupt Flags Master Receive Mode
+ * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_MasterReceive_ISR(I2C_HandleTypeDef *hi2c)
+{
+ uint16_t DevAddress;
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET)
+ {
+ /* Read data from RXDR */
+ (*hi2c->pBuffPtr++) = hi2c->Instance->RXDR;
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TCR) == SET)
+ {
+ if((hi2c->XferSize == 0)&&(hi2c->XferCount!=0))
+ {
+ DevAddress = (hi2c->Instance->CR2 & I2C_CR2_SADD);
+
+ if(hi2c->XferCount > 255)
+ {
+ I2C_TransferConfig(hi2c,DevAddress,255, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferCount, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ hi2c->XferSize = hi2c->XferCount;
+ }
+ }
+ else
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Wrong size Status regarding TCR flag event */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_SIZE;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TC) == SET)
+ {
+ if(hi2c->XferCount == 0)
+ {
+ /* Generate Stop */
+ hi2c->Instance->CR2 |= I2C_CR2_STOP;
+ }
+ else
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Wrong size Status regarding TCR flag event */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_SIZE;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET)
+ {
+ /* Disable ERR, TC, STOP, NACK, TXI interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c,I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_RXI );
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ if(hi2c->State == HAL_I2C_STATE_MEM_BUSY_RX)
+ {
+ HAL_I2C_MemRxCpltCallback(hi2c);
+ }
+ else
+ {
+ HAL_I2C_MasterRxCpltCallback(hi2c);
+ }
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET)
+ {
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+
+}
+
+/**
+ * @brief Handle Interrupt Flags Slave Transmit Mode
+ * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_SlaveTransmit_ISR(I2C_HandleTypeDef *hi2c)
+{
+ /* Process locked */
+ __HAL_LOCK(hi2c);
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) != RESET)
+ {
+ /* Check that I2C transfer finished */
+ /* if yes, normal usecase, a NACK is sent by the MASTER when Transfer is finished */
+ /* Mean XferCount == 0*/
+ /* So clear Flag NACKF only */
+ if(hi2c->XferCount == 0)
+ {
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ }
+ else
+ {
+ /* if no, error usecase, a Non-Acknowledge of last Data is generated by the MASTER*/
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Set ErrorCode corresponding to a Non-Acknowledge */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the Error callback to prevent upper layer */
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == SET)
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+ }
+ /* Check first if STOPF is set */
+ /* to prevent a Write Data in TX buffer */
+ /* which is stuck in TXDR until next */
+ /* communication with Master */
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET)
+ {
+ /* Disable ERRI, TCI, STOPI, NACKI, ADDRI, RXI, TXI interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c,I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI );
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ HAL_I2C_SlaveTxCpltCallback(hi2c);
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXIS) == SET)
+ {
+ /* Write data to TXDR only if XferCount not reach "0" */
+ /* A TXIS flag can be set, during STOP treatment */
+ if(hi2c->XferCount > 0)
+ {
+ /* Write data to TXDR */
+ hi2c->Instance->TXDR = (*hi2c->pBuffPtr++);
+ hi2c->XferCount--;
+ }
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle Interrupt Flags Slave Receive Mode
+ * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_SlaveReceive_ISR(I2C_HandleTypeDef *hi2c)
+{
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) != RESET)
+ {
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == SET)
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET)
+ {
+ /* Read data from RXDR */
+ (*hi2c->pBuffPtr++) = hi2c->Instance->RXDR;
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ else if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET)
+ {
+ /* Disable ERRI, TCI, STOPI, NACKI, ADDRI, RXI, TXI interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c,I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_RXI );
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ HAL_I2C_SlaveRxCpltCallback(hi2c);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ 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 the specified I2C.
+ * @param DevAddress: Target device address
+ * @param MemAddress: Internal memory address
+ * @param MemAddSize: Size of internal memory address
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout)
+{
+ I2C_TransferConfig(hi2c,DevAddress,MemAddSize, I2C_RELOAD_MODE, I2C_GENERATE_START_WRITE);
+
+ /* Wait until TXIS flag is set */
+ if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* If Memory address size is 8Bit */
+ if(MemAddSize == I2C_MEMADD_SIZE_8BIT)
+ {
+ /* Send Memory Address */
+ hi2c->Instance->TXDR = __HAL_I2C_MEM_ADD_LSB(MemAddress);
+ }
+ /* If Memory address size is 16Bit */
+ else
+ {
+ /* Send MSB of Memory Address */
+ hi2c->Instance->TXDR = __HAL_I2C_MEM_ADD_MSB(MemAddress);
+
+ /* Wait until TXIS flag is set */
+ if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Send LSB of Memory Address */
+ hi2c->Instance->TXDR = __HAL_I2C_MEM_ADD_LSB(MemAddress);
+ }
+
+ /* Wait until TCR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+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 the specified I2C.
+ * @param DevAddress: Target device address
+ * @param MemAddress: Internal memory address
+ * @param MemAddSize: Size of internal memory address
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout)
+{
+ I2C_TransferConfig(hi2c,DevAddress,MemAddSize, I2C_SOFTEND_MODE, I2C_GENERATE_START_WRITE);
+
+ /* Wait until TXIS flag is set */
+ if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* If Memory address size is 8Bit */
+ if(MemAddSize == I2C_MEMADD_SIZE_8BIT)
+ {
+ /* Send Memory Address */
+ hi2c->Instance->TXDR = __HAL_I2C_MEM_ADD_LSB(MemAddress);
+ }
+ /* If Mememory address size is 16Bit */
+ else
+ {
+ /* Send MSB of Memory Address */
+ hi2c->Instance->TXDR = __HAL_I2C_MEM_ADD_MSB(MemAddress);
+
+ /* Wait until TXIS flag is set */
+ if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Send LSB of Memory Address */
+ hi2c->Instance->TXDR = __HAL_I2C_MEM_ADD_LSB(MemAddress);
+ }
+
+ /* Wait until TC flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TC, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DMA I2C master transmit process complete callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void I2C_DMAMasterTransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ uint16_t DevAddress;
+ I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ /* Check if last DMA request was done with RELOAD */
+ /* Set NBYTES to write and reload if size > 255 */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ /* Wait until TCR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, I2C_TIMEOUT_TCR) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ hi2c->pBuffPtr += hi2c->XferSize;
+ hi2c->XferCount -= hi2c->XferSize;
+ if(hi2c->XferCount > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ }
+
+ DevAddress = (hi2c->Instance->CR2 & I2C_CR2_SADD);
+
+ /* Enable the DMA channel */
+ HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize);
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+
+ /* Wait until TXIS flag is set */
+ if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, I2C_TIMEOUT_TXIS) != HAL_OK)
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN;
+ }
+ }
+ }
+ else
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ HAL_I2C_MasterTxCpltCallback(hi2c);
+ }
+ }
+}
+
+/**
+ * @brief DMA I2C slave transmit process complete callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void I2C_DMASlaveTransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ /* Wait until STOP flag is set */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Normal Use case, a AF is generated by master */
+ /* to inform slave the end of transfer */
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c,I2C_FLAG_STOPF);
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ HAL_I2C_SlaveTxCpltCallback(hi2c);
+ }
+}
+
+/**
+ * @brief DMA I2C master receive process complete callback
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void I2C_DMAMasterReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+ uint16_t DevAddress;
+
+ /* Check if last DMA request was done with RELOAD */
+ /* Set NBYTES to write and reload if size > 255 */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ /* Wait until TCR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, I2C_TIMEOUT_TCR) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ hi2c->pBuffPtr += hi2c->XferSize;
+ hi2c->XferCount -= hi2c->XferSize;
+ if(hi2c->XferCount > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ }
+
+ DevAddress = (hi2c->Instance->CR2 & I2C_CR2_SADD);
+
+ /* Enable the DMA channel */
+ HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize);
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, I2C_TIMEOUT_RXNE) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN;
+ }
+ }
+ }
+ else
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ HAL_I2C_MasterRxCpltCallback(hi2c);
+ }
+ }
+}
+
+/**
+ * @brief DMA I2C slave receive process complete callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void I2C_DMASlaveReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOPF flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ HAL_I2C_SlaveRxCpltCallback(hi2c);
+ }
+}
+
+/**
+ * @brief DMA I2C Memory Write process complete callback
+ * @param hdma : DMA handle
+ * @retval None
+ */
+static void I2C_DMAMemTransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ uint16_t DevAddress;
+ I2C_HandleTypeDef* hi2c = ( I2C_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* Check if last DMA request was done with RELOAD */
+ /* Set NBYTES to write and reload if size > 255 */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ /* Wait until TCR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, I2C_TIMEOUT_TCR) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ hi2c->pBuffPtr += hi2c->XferSize;
+ hi2c->XferCount -= hi2c->XferSize;
+ if(hi2c->XferCount > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ }
+
+ DevAddress = (hi2c->Instance->CR2 & I2C_CR2_SADD);
+
+ /* Enable the DMA channel */
+ HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize);
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+
+ /* Wait until TXIS flag is set */
+ if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, I2C_TIMEOUT_TXIS) != HAL_OK)
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN;
+ }
+ }
+ }
+ else
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ HAL_I2C_MemTxCpltCallback(hi2c);
+ }
+ }
+}
+
+/**
+ * @brief DMA I2C Memory Read process complete callback
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void I2C_DMAMemReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef* hi2c = ( I2C_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ uint16_t DevAddress;
+
+ /* Check if last DMA request was done with RELOAD */
+ /* Set NBYTES to write and reload if size > 255 */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ /* Wait until TCR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, I2C_TIMEOUT_TCR) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ hi2c->pBuffPtr += hi2c->XferSize;
+ hi2c->XferCount -= hi2c->XferSize;
+ if(hi2c->XferCount > 255)
+ {
+ hi2c->XferSize = 255;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ }
+
+ DevAddress = (hi2c->Instance->CR2 & I2C_CR2_SADD);
+
+ /* Enable the DMA channel */
+ HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize);
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > 255 */
+ if( (hi2c->XferSize == 255) && (hi2c->XferSize < hi2c->XferCount) )
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c,DevAddress,hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, I2C_TIMEOUT_RXNE) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN;
+ }
+ }
+ }
+ else
+ {
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, I2C_TIMEOUT_STOPF) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Check if Errors has been detected during transfer */
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+ else
+ {
+ HAL_I2C_MemRxCpltCallback(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->CR2 |= I2C_CR2_NACK;
+
+ hi2c->XferCount = 0;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ 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 the specified I2C.
+ * @param Flag: specifies the I2C flag to check.
+ * @param Status: The new Flag status (SET or RESET).
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
+{
+ uint32_t tickstart = HAL_GetTick();
+
+ /* Wait until flag is set */
+ if(Status == RESET)
+ {
+ while(__HAL_I2C_GET_FLAG(hi2c, Flag) == RESET)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
+ {
+ hi2c->State= HAL_I2C_STATE_READY;
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ else
+ {
+ while(__HAL_I2C_GET_FLAG(hi2c, Flag) != RESET)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
+ {
+ 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 TXIS flag.
+ * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnTXISFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout)
+{
+ uint32_t tickstart = HAL_GetTick();
+
+ while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXIS) == RESET)
+ {
+ /* Check if a NACK is detected */
+ if(I2C_IsAcknowledgeFailed(hi2c, Timeout) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((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 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
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout)
+{
+ uint32_t tickstart = 0x00;
+ tickstart = HAL_GetTick();
+
+ while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == RESET)
+ {
+ /* Check if a NACK is detected */
+ if(I2C_IsAcknowledgeFailed(hi2c, Timeout) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check for the Timeout */
+ if((Timeout == 0) || ((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 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
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout)
+{
+ uint32_t tickstart = 0x00;
+ tickstart = HAL_GetTick();
+
+ 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);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ hi2c->State= HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ /* Check for the Timeout */
+ if((Timeout == 0) || ((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.
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c, uint32_t Timeout)
+{
+ uint32_t tickstart = 0x00;
+ tickstart = HAL_GetTick();
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET)
+ {
+ /* Generate stop if necessary only in case of I2C peripheral in MASTER mode */
+ if((hi2c->State == HAL_I2C_STATE_MASTER_BUSY_TX) || (hi2c->State == HAL_I2C_STATE_MEM_BUSY_TX)
+ || (hi2c->State == HAL_I2C_STATE_MEM_BUSY_RX))
+ {
+ /* No need to generate the STOP condition if AUTOEND mode is enabled */
+ /* Generate the STOP condition only in case of SOFTEND mode is enabled */
+ if((hi2c->Instance->CR2 & I2C_AUTOEND_MODE) != I2C_AUTOEND_MODE)
+ {
+ /* Generate Stop */
+ hi2c->Instance->CR2 |= I2C_CR2_STOP;
+ }
+ }
+
+ /* Wait until STOP Flag is reset */
+ /* AutoEnd should be initiate after AF */
+ while(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == RESET)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
+ {
+ hi2c->State= HAL_I2C_STATE_READY;
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+
+ /* Clear NACKF Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ __HAL_I2C_RESET_CR2(hi2c);
+
+ hi2c->ErrorCode = HAL_I2C_ERROR_AF;
+ hi2c->State= HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Handles I2Cx communication when starting transfer or during transfer (TC or TCR flag are set).
+ * @param hi2c: I2C handle.
+ * @param DevAddress: specifies the slave address to be programmed.
+ * @param Size: specifies the number of bytes to be programmed.
+ * This parameter must be a value between 0 and 255.
+ * @param Mode: new state of the I2C START condition generation.
+ * This parameter can be one of the following values:
+ * @arg I2C_RELOAD_MODE: Enable Reload mode .
+ * @arg I2C_AUTOEND_MODE: Enable Automatic end mode.
+ * @arg I2C_SOFTEND_MODE: Enable Software end mode.
+ * @param Request: new state of the I2C START condition generation.
+ * This parameter can be one of the following values:
+ * @arg I2C_NO_STARTSTOP: Don't Generate stop and start condition.
+ * @arg I2C_GENERATE_STOP: Generate stop condition (Size should be set to 0).
+ * @arg I2C_GENERATE_START_READ: Generate Restart for read request.
+ * @arg I2C_GENERATE_START_WRITE: Generate Restart for write request.
+ * @retval None
+ */
+static void I2C_TransferConfig(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t Size, uint32_t Mode, uint32_t Request)
+{
+ uint32_t tmpreg = 0;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+ assert_param(IS_TRANSFER_MODE(Mode));
+ assert_param(IS_TRANSFER_REQUEST(Request));
+
+ /* Get the CR2 register value */
+ tmpreg = hi2c->Instance->CR2;
+
+ /* clear tmpreg specific bits */
+ tmpreg &= (uint32_t)~((uint32_t)(I2C_CR2_SADD | I2C_CR2_NBYTES | I2C_CR2_RELOAD | I2C_CR2_AUTOEND | I2C_CR2_RD_WRN | I2C_CR2_START | I2C_CR2_STOP));
+
+ /* update tmpreg */
+ tmpreg |= (uint32_t)(((uint32_t)DevAddress & I2C_CR2_SADD) | (((uint32_t)Size << 16 ) & I2C_CR2_NBYTES) | \
+ (uint32_t)Mode | (uint32_t)Request);
+
+ /* update CR2 register */
+ hi2c->Instance->CR2 = tmpreg;
+}
+
+/**
+ * @}
+ */
+
+#endif /* HAL_I2C_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/