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Diff: targets/TARGET_STM/TARGET_STM32F0/device/stm32f0xx_hal_smbus.c
- Revision:
- 149:156823d33999
- Parent:
- 144:ef7eb2e8f9f7
- Child:
- 156:95d6b41a828b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_STM/TARGET_STM32F0/device/stm32f0xx_hal_smbus.c Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,1974 @@
+/**
+ ******************************************************************************
+ * @file stm32f0xx_hal_smbus.c
+ * @author MCD Application Team
+ * @version V1.4.0
+ * @date 27-May-2016
+ * @brief SMBUS HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the System Management Bus (SMBus) peripheral,
+ * based on I2C principles of operation :
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral State and Errors functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+ The SMBUS HAL driver can be used as follows:
+
+ (#) Declare a SMBUS_HandleTypeDef handle structure, for example:
+ SMBUS_HandleTypeDef hsmbus;
+
+ (#)Initialize the SMBUS low level resources by implementing the HAL_SMBUS_MspInit() API:
+ (##) Enable the SMBUSx interface clock
+ (##) SMBUS pins configuration
+ (+++) Enable the clock for the SMBUS GPIOs
+ (+++) Configure SMBUS pins as alternate function open-drain
+ (##) NVIC configuration if you need to use interrupt process
+ (+++) Configure the SMBUSx interrupt priority
+ (+++) Enable the NVIC SMBUS IRQ Channel
+
+ (#) Configure the Communication Clock Timing, Bus Timeout, Own Address1, Master Addressing mode,
+ Dual Addressing mode, Own Address2, Own Address2 Mask, General call, Nostretch mode,
+ Peripheral mode and Packet Error Check mode in the hsmbus Init structure.
+
+ (#) Initialize the SMBUS registers by calling the HAL_SMBUS_Init() API:
+ (++) These API's configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)
+ by calling the customized HAL_SMBUS_MspInit(&hsmbus) API.
+
+ (#) To check if target device is ready for communication, use the function HAL_SMBUS_IsDeviceReady()
+
+ (#) For SMBUS IO operations, only one mode of operations is available within this driver
+
+ *** Interrupt mode IO operation ***
+ ===================================
+ [..]
+ (+) Transmit in master/host SMBUS mode an amount of data in non-blocking mode using HAL_SMBUS_Master_Transmit_IT()
+ (++) At transmission end of transfer HAL_SMBUS_MasterTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer HAL_SMBUS_MasterTxCpltCallback()
+ (+) Receive in master/host SMBUS mode an amount of data in non-blocking mode using HAL_SMBUS_Master_Receive_IT()
+ (++) At reception end of transfer HAL_SMBUS_MasterRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer HAL_SMBUS_MasterRxCpltCallback()
+ (+) Abort a master/host SMBUS process communication with Interrupt using HAL_SMBUS_Master_Abort_IT()
+ (++) The associated previous transfer callback is called at the end of abort process
+ (++) mean HAL_SMBUS_MasterTxCpltCallback() in case of previous state was master transmit
+ (++) mean HAL_SMBUS_MasterRxCpltCallback() in case of previous state was master receive
+ (+) Enable/disable the Address listen mode in slave/device or host/slave SMBUS mode
+ using HAL_SMBUS_EnableListen_IT() HAL_SMBUS_DisableListen_IT()
+ (++) When address slave/device SMBUS match, HAL_SMBUS_AddrCallback() is executed and user can
+ add his own code to check the Address Match Code and the transmission direction request by master/host (Write/Read).
+ (++) At Listen mode end HAL_SMBUS_ListenCpltCallback() is executed and user can
+ add his own code by customization of function pointer HAL_SMBUS_ListenCpltCallback()
+ (+) Transmit in slave/device SMBUS mode an amount of data in non-blocking mode using HAL_SMBUS_Slave_Transmit_IT()
+ (++) At transmission end of transfer HAL_SMBUS_SlaveTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer HAL_SMBUS_SlaveTxCpltCallback()
+ (+) Receive in slave/device SMBUS mode an amount of data in non-blocking mode using HAL_SMBUS_Slave_Receive_IT()
+ (++) At reception end of transfer HAL_SMBUS_SlaveRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer HAL_SMBUS_SlaveRxCpltCallback()
+ (+) Enable/Disable the SMBUS alert mode using HAL_SMBUS_EnableAlert_IT() HAL_SMBUS_DisableAlert_IT()
+ (++) When SMBUS Alert is generated HAL_SMBUS_ErrorCallback() is executed and user can
+ add his own code by customization of function pointer HAL_SMBUS_ErrorCallback()
+ to check the Alert Error Code using function HAL_SMBUS_GetError()
+ (+) Get HAL state machine or error values using HAL_SMBUS_GetState() or HAL_SMBUS_GetError()
+ (+) In case of transfer Error, HAL_SMBUS_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer HAL_SMBUS_ErrorCallback()
+ to check the Error Code using function HAL_SMBUS_GetError()
+
+ *** SMBUS HAL driver macros list ***
+ ==================================
+ [..]
+ Below the list of most used macros in SMBUS HAL driver.
+
+ (+) __HAL_SMBUS_ENABLE: Enable the SMBUS peripheral
+ (+) __HAL_SMBUS_DISABLE: Disable the SMBUS peripheral
+ (+) __HAL_SMBUS_GET_FLAG: Check whether the specified SMBUS flag is set or not
+ (+) __HAL_SMBUS_CLEAR_FLAG: Clear the specified SMBUS pending flag
+ (+) __HAL_SMBUS_ENABLE_IT: Enable the specified SMBUS interrupt
+ (+) __HAL_SMBUS_DISABLE_IT: Disable the specified SMBUS interrupt
+
+ [..]
+ (@) You can refer to the SMBUS HAL driver header file for more useful macros
+
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f0xx_hal.h"
+
+/** @addtogroup STM32F0xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup SMBUS SMBUS
+ * @brief SMBUS HAL module driver
+ * @{
+ */
+
+#ifdef HAL_SMBUS_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/** @defgroup SMBUS_Private_Define SMBUS Private Constants
+ * @{
+ */
+#define TIMING_CLEAR_MASK ((uint32_t)0xF0FFFFFFU) /*!< SMBUS TIMING clear register Mask */
+#define HAL_TIMEOUT_ADDR ((uint32_t)10000) /*!< 10 s */
+#define HAL_TIMEOUT_BUSY ((uint32_t)25) /*!< 25 ms */
+#define HAL_TIMEOUT_DIR ((uint32_t)25) /*!< 25 ms */
+#define HAL_TIMEOUT_RXNE ((uint32_t)25) /*!< 25 ms */
+#define HAL_TIMEOUT_STOPF ((uint32_t)25) /*!< 25 ms */
+#define HAL_TIMEOUT_TC ((uint32_t)25) /*!< 25 ms */
+#define HAL_TIMEOUT_TCR ((uint32_t)25) /*!< 25 ms */
+#define HAL_TIMEOUT_TXIS ((uint32_t)25) /*!< 25 ms */
+#define MAX_NBYTE_SIZE 255
+/**
+ * @}
+ */
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/** @addtogroup SMBUS_Private_Functions SMBUS Private Functions
+ * @{
+ */
+static HAL_StatusTypeDef SMBUS_WaitOnFlagUntilTimeout(SMBUS_HandleTypeDef *hsmbus, uint32_t Flag, FlagStatus Status, uint32_t Timeout);
+
+static HAL_StatusTypeDef SMBUS_Enable_IRQ(SMBUS_HandleTypeDef *hsmbus, uint16_t InterruptRequest);
+static HAL_StatusTypeDef SMBUS_Disable_IRQ(SMBUS_HandleTypeDef *hsmbus, uint16_t InterruptRequest);
+static HAL_StatusTypeDef SMBUS_Master_ISR(SMBUS_HandleTypeDef *hsmbus);
+static HAL_StatusTypeDef SMBUS_Slave_ISR(SMBUS_HandleTypeDef *hsmbus);
+
+static void SMBUS_TransferConfig(SMBUS_HandleTypeDef *hsmbus, uint16_t DevAddress, uint8_t Size, uint32_t Mode, uint32_t Request);
+/**
+ * @}
+ */
+
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup SMBUS_Exported_Functions SMBUS Exported Functions
+ * @{
+ */
+
+/** @defgroup SMBUS_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @brief Initialization and Configuration functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Initialization and de-initialization functions #####
+ ===============================================================================
+ [..] This subsection provides a set of functions allowing to initialize and
+ deinitialize the SMBUSx peripheral:
+
+ (+) User must Implement HAL_SMBUS_MspInit() function in which he configures
+ all related peripherals resources (CLOCK, GPIO, IT and NVIC ).
+
+ (+) Call the function HAL_SMBUS_Init() to configure the selected device with
+ the selected configuration:
+ (++) Clock Timing
+ (++) Bus Timeout
+ (++) Analog Filer mode
+ (++) Own Address 1
+ (++) Addressing mode (Master, Slave)
+ (++) Dual Addressing mode
+ (++) Own Address 2
+ (++) Own Address 2 Mask
+ (++) General call mode
+ (++) Nostretch mode
+ (++) Packet Error Check mode
+ (++) Peripheral mode
+
+
+ (+) Call the function HAL_SMBUS_DeInit() to restore the default configuration
+ of the selected SMBUSx peripheral.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initialize the SMBUS according to the specified parameters
+ * in the SMBUS_InitTypeDef and initialize the associated handle.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_Init(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Check the SMBUS handle allocation */
+ if(hsmbus == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_SMBUS_ALL_INSTANCE(hsmbus->Instance));
+ assert_param(IS_SMBUS_ANALOG_FILTER(hsmbus->Init.AnalogFilter));
+ assert_param(IS_SMBUS_OWN_ADDRESS1(hsmbus->Init.OwnAddress1));
+ assert_param(IS_SMBUS_ADDRESSING_MODE(hsmbus->Init.AddressingMode));
+ assert_param(IS_SMBUS_DUAL_ADDRESS(hsmbus->Init.DualAddressMode));
+ assert_param(IS_SMBUS_OWN_ADDRESS2(hsmbus->Init.OwnAddress2));
+ assert_param(IS_SMBUS_OWN_ADDRESS2_MASK(hsmbus->Init.OwnAddress2Masks));
+ assert_param(IS_SMBUS_GENERAL_CALL(hsmbus->Init.GeneralCallMode));
+ assert_param(IS_SMBUS_NO_STRETCH(hsmbus->Init.NoStretchMode));
+ assert_param(IS_SMBUS_PEC(hsmbus->Init.PacketErrorCheckMode));
+ assert_param(IS_SMBUS_PERIPHERAL_MODE(hsmbus->Init.PeripheralMode));
+
+ if(hsmbus->State == HAL_SMBUS_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ hsmbus->Lock = HAL_UNLOCKED;
+
+ /* Init the low level hardware : GPIO, CLOCK, NVIC */
+ HAL_SMBUS_MspInit(hsmbus);
+ }
+
+ hsmbus->State = HAL_SMBUS_STATE_BUSY;
+
+ /* Disable the selected SMBUS peripheral */
+ __HAL_SMBUS_DISABLE(hsmbus);
+
+ /*---------------------------- SMBUSx TIMINGR Configuration ------------------------*/
+ /* Configure SMBUSx: Frequency range */
+ hsmbus->Instance->TIMINGR = hsmbus->Init.Timing & TIMING_CLEAR_MASK;
+
+ /*---------------------------- SMBUSx TIMEOUTR Configuration ------------------------*/
+ /* Configure SMBUSx: Bus Timeout */
+ hsmbus->Instance->TIMEOUTR &= ~I2C_TIMEOUTR_TIMOUTEN;
+ hsmbus->Instance->TIMEOUTR &= ~I2C_TIMEOUTR_TEXTEN;
+ hsmbus->Instance->TIMEOUTR = hsmbus->Init.SMBusTimeout;
+
+ /*---------------------------- SMBUSx OAR1 Configuration -----------------------*/
+ /* Configure SMBUSx: Own Address1 and ack own address1 mode */
+ hsmbus->Instance->OAR1 &= ~I2C_OAR1_OA1EN;
+
+ if(hsmbus->Init.OwnAddress1 != 0)
+ {
+ if(hsmbus->Init.AddressingMode == SMBUS_ADDRESSINGMODE_7BIT)
+ {
+ hsmbus->Instance->OAR1 = (I2C_OAR1_OA1EN | hsmbus->Init.OwnAddress1);
+ }
+ else /* SMBUS_ADDRESSINGMODE_10BIT */
+ {
+ hsmbus->Instance->OAR1 = (I2C_OAR1_OA1EN | I2C_OAR1_OA1MODE | hsmbus->Init.OwnAddress1);
+ }
+ }
+
+ /*---------------------------- SMBUSx CR2 Configuration ------------------------*/
+ /* Configure SMBUSx: Addressing Master mode */
+ if(hsmbus->Init.AddressingMode == SMBUS_ADDRESSINGMODE_10BIT)
+ {
+ hsmbus->Instance->CR2 = (I2C_CR2_ADD10);
+ }
+ /* Enable the AUTOEND by default, and enable NACK (should be disable only during Slave process) */
+ /* AUTOEND and NACK bit will be manage during Transfer process */
+ hsmbus->Instance->CR2 |= (I2C_CR2_AUTOEND | I2C_CR2_NACK);
+
+ /*---------------------------- SMBUSx OAR2 Configuration -----------------------*/
+ /* Configure SMBUSx: Dual mode and Own Address2 */
+ hsmbus->Instance->OAR2 = (hsmbus->Init.DualAddressMode | hsmbus->Init.OwnAddress2 | (hsmbus->Init.OwnAddress2Masks << 8));
+
+ /*---------------------------- SMBUSx CR1 Configuration ------------------------*/
+ /* Configure SMBUSx: Generalcall and NoStretch mode */
+ hsmbus->Instance->CR1 = (hsmbus->Init.GeneralCallMode | hsmbus->Init.NoStretchMode | hsmbus->Init.PacketErrorCheckMode | hsmbus->Init.PeripheralMode | hsmbus->Init.AnalogFilter);
+
+ /* Enable Slave Byte Control only in case of Packet Error Check is enabled and SMBUS Peripheral is set in Slave mode */
+ if( (hsmbus->Init.PacketErrorCheckMode == SMBUS_PEC_ENABLE)
+ && ( (hsmbus->Init.PeripheralMode == SMBUS_PERIPHERAL_MODE_SMBUS_SLAVE) || (hsmbus->Init.PeripheralMode == SMBUS_PERIPHERAL_MODE_SMBUS_SLAVE_ARP) ) )
+ {
+ hsmbus->Instance->CR1 |= I2C_CR1_SBC;
+ }
+
+ /* Enable the selected SMBUS peripheral */
+ __HAL_SMBUS_ENABLE(hsmbus);
+
+ hsmbus->ErrorCode = HAL_SMBUS_ERROR_NONE;
+ hsmbus->PreviousState = HAL_SMBUS_STATE_READY;
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DeInitialize the SMBUS peripheral.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_DeInit(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Check the SMBUS handle allocation */
+ if(hsmbus == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_SMBUS_ALL_INSTANCE(hsmbus->Instance));
+
+ hsmbus->State = HAL_SMBUS_STATE_BUSY;
+
+ /* Disable the SMBUS Peripheral Clock */
+ __HAL_SMBUS_DISABLE(hsmbus);
+
+ /* DeInit the low level hardware: GPIO, CLOCK, NVIC */
+ HAL_SMBUS_MspDeInit(hsmbus);
+
+ hsmbus->ErrorCode = HAL_SMBUS_ERROR_NONE;
+ hsmbus->PreviousState = HAL_SMBUS_STATE_RESET;
+ hsmbus->State = HAL_SMBUS_STATE_RESET;
+
+ /* Release Lock */
+ __HAL_UNLOCK(hsmbus);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Initialize the SMBUS MSP.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval None
+ */
+ __weak void HAL_SMBUS_MspInit(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsmbus);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SMBUS_MspInit could be implemented in the user file
+ */
+}
+
+/**
+ * @brief DeInitialize the SMBUS MSP.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval None
+ */
+ __weak void HAL_SMBUS_MspDeInit(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsmbus);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SMBUS_MspDeInit could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup SMBUS_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 SMBUS data
+ transfers.
+
+ (#) Blocking mode function to check if device is ready for usage is :
+ (++) HAL_SMBUS_IsDeviceReady()
+
+ (#) There is only one mode of transfer:
+ (++) Non-Blocking mode : The communication is performed using Interrupts.
+ These functions return the status of the transfer startup.
+ The end of the data processing will be indicated through the
+ dedicated SMBUS IRQ when using Interrupt mode.
+
+ (#) Non-Blocking mode functions with Interrupt are :
+ (++) HAL_SMBUS_Master_Transmit_IT()
+ (++) HAL_SMBUS_Master_Receive_IT()
+ (++) HAL_SMBUS_Slave_Transmit_IT()
+ (++) HAL_SMBUS_Slave_Receive_IT()
+ (++) HAL_SMBUS_EnableListen_IT() or alias HAL_SMBUS_EnableListen_IT()
+ (++) HAL_SMBUS_DisableListen_IT()
+ (++) HAL_SMBUS_EnableAlert_IT()
+ (++) HAL_SMBUS_DisableAlert_IT()
+
+ (#) A set of Transfer Complete Callbacks are provided in non-Blocking mode:
+ (++) HAL_SMBUS_MasterTxCpltCallback()
+ (++) HAL_SMBUS_MasterRxCpltCallback()
+ (++) HAL_SMBUS_SlaveTxCpltCallback()
+ (++) HAL_SMBUS_SlaveRxCpltCallback()
+ (++) HAL_SMBUS_AddrCallback()
+ (++) HAL_SMBUS_ListenCpltCallback()
+ (++) HAL_SMBUS_ErrorCallback()
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Transmit in master/host SMBUS mode an amount of data in non-blocking mode with Interrupt.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shift at right before call interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref SMBUS_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_Master_Transmit_IT(SMBUS_HandleTypeDef *hsmbus, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ /* Check the parameters */
+ assert_param(IS_SMBUS_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if(hsmbus->State == HAL_SMBUS_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hsmbus);
+
+ hsmbus->State = HAL_SMBUS_STATE_MASTER_BUSY_TX;
+ hsmbus->ErrorCode = HAL_SMBUS_ERROR_NONE;
+ /* Prepare transfer parameters */
+ hsmbus->pBuffPtr = pData;
+ hsmbus->XferCount = Size;
+ hsmbus->XferOptions = XferOptions;
+
+ /* In case of Quick command, remove autoend mode */
+ /* Manage the stop generation by software */
+ if(hsmbus->pBuffPtr == NULL)
+ {
+ hsmbus->XferOptions &= ~SMBUS_AUTOEND_MODE;
+ }
+
+ if(Size > MAX_NBYTE_SIZE)
+ {
+ hsmbus->XferSize = MAX_NBYTE_SIZE;
+ }
+ else
+ {
+ hsmbus->XferSize = Size;
+ }
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > MAX_NBYTE_SIZE and generate RESTART */
+ if( (hsmbus->XferSize == MAX_NBYTE_SIZE) && (hsmbus->XferSize < hsmbus->XferCount) )
+ {
+ SMBUS_TransferConfig(hsmbus,DevAddress,hsmbus->XferSize, SMBUS_RELOAD_MODE | (hsmbus->XferOptions & SMBUS_SENDPEC_MODE), SMBUS_GENERATE_START_WRITE);
+ }
+ else
+ {
+ /* If transfer direction not change, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if(hsmbus->PreviousState == HAL_SMBUS_STATE_MASTER_BUSY_TX)
+ {
+ SMBUS_TransferConfig(hsmbus,DevAddress,hsmbus->XferSize, hsmbus->XferOptions, SMBUS_NO_STARTSTOP);
+ }
+ /* Else transfer direction change, so generate Restart with new transfer direction */
+ else
+ {
+ SMBUS_TransferConfig(hsmbus,DevAddress,hsmbus->XferSize, hsmbus->XferOptions, SMBUS_GENERATE_START_WRITE);
+ }
+
+ /* If PEC mode is enable, size to transmit manage by SW part should be Size-1 byte, corresponding to PEC byte */
+ /* PEC byte is automatically sent by HW block, no need to manage it in Transmit process */
+ if(SMBUS_GET_PEC_MODE(hsmbus) != RESET)
+ {
+ hsmbus->XferSize--;
+ hsmbus->XferCount--;
+ }
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* Note : The SMBUS interrupts must be enabled after unlocking current process
+ to avoid the risk of SMBUS interrupt handle execution before current
+ process unlock */
+ SMBUS_Enable_IRQ(hsmbus, SMBUS_IT_TX);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in master/host SMBUS mode an amount of data in non-blocking mode with Interrupt.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shift at right before call interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref SMBUS_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_Master_Receive_IT(SMBUS_HandleTypeDef *hsmbus, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ /* Check the parameters */
+ assert_param(IS_SMBUS_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if(hsmbus->State == HAL_SMBUS_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hsmbus);
+
+ hsmbus->State = HAL_SMBUS_STATE_MASTER_BUSY_RX;
+ hsmbus->ErrorCode = HAL_SMBUS_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hsmbus->pBuffPtr = pData;
+ hsmbus->XferCount = Size;
+ hsmbus->XferOptions = XferOptions;
+
+ /* In case of Quick command, remove autoend mode */
+ /* Manage the stop generation by software */
+ if(hsmbus->pBuffPtr == NULL)
+ {
+ hsmbus->XferOptions &= ~SMBUS_AUTOEND_MODE;
+ }
+
+ if(Size > MAX_NBYTE_SIZE)
+ {
+ hsmbus->XferSize = MAX_NBYTE_SIZE;
+ }
+ else
+ {
+ hsmbus->XferSize = Size;
+ }
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if size > MAX_NBYTE_SIZE and generate RESTART */
+ if( (hsmbus->XferSize == MAX_NBYTE_SIZE) && (hsmbus->XferSize < hsmbus->XferCount) )
+ {
+ SMBUS_TransferConfig(hsmbus,DevAddress,hsmbus->XferSize, SMBUS_RELOAD_MODE | (hsmbus->XferOptions & SMBUS_SENDPEC_MODE), SMBUS_GENERATE_START_READ);
+ }
+ else
+ {
+ /* If transfer direction not change, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if(hsmbus->PreviousState == HAL_SMBUS_STATE_MASTER_BUSY_RX)
+ {
+ SMBUS_TransferConfig(hsmbus,DevAddress,hsmbus->XferSize, hsmbus->XferOptions, SMBUS_NO_STARTSTOP);
+ }
+ /* Else transfer direction change, so generate Restart with new transfer direction */
+ else
+ {
+ SMBUS_TransferConfig(hsmbus,DevAddress,hsmbus->XferSize, hsmbus->XferOptions, SMBUS_GENERATE_START_READ);
+ }
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* Note : The SMBUS interrupts must be enabled after unlocking current process
+ to avoid the risk of SMBUS interrupt handle execution before current
+ process unlock */
+ SMBUS_Enable_IRQ(hsmbus, SMBUS_IT_RX);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Abort a master/host SMBUS process communication with Interrupt.
+ * @note This abort can be called only if state is ready
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shift at right before call interface
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_Master_Abort_IT(SMBUS_HandleTypeDef *hsmbus, uint16_t DevAddress)
+{
+ if(hsmbus->State == HAL_SMBUS_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hsmbus);
+
+ /* Keep the same state as previous */
+ /* to perform as well the call of the corresponding end of transfer callback */
+ if(hsmbus->PreviousState == HAL_SMBUS_STATE_MASTER_BUSY_TX)
+ {
+ hsmbus->State = HAL_SMBUS_STATE_MASTER_BUSY_TX;
+ }
+ else if(hsmbus->PreviousState == HAL_SMBUS_STATE_MASTER_BUSY_RX)
+ {
+ hsmbus->State = HAL_SMBUS_STATE_MASTER_BUSY_RX;
+ }
+ else
+ {
+ /* Wrong usage of abort function */
+ /* This function should be used only in case of abort monitored by master device */
+ return HAL_ERROR;
+ }
+ hsmbus->ErrorCode = HAL_SMBUS_ERROR_NONE;
+
+ /* Set NBYTES to 1 to generate a dummy read on SMBUS peripheral */
+ /* Set AUTOEND mode, this will generate a NACK then STOP condition to abort the current transfer */
+ SMBUS_TransferConfig(hsmbus, DevAddress, 1, SMBUS_AUTOEND_MODE, SMBUS_NO_STARTSTOP);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* Note : The SMBUS interrupts must be enabled after unlocking current process
+ to avoid the risk of SMBUS interrupt handle execution before current
+ process unlock */
+ if(hsmbus->State == HAL_SMBUS_STATE_MASTER_BUSY_TX)
+ {
+ SMBUS_Enable_IRQ(hsmbus, SMBUS_IT_TX);
+ }
+ else if(hsmbus->State == HAL_SMBUS_STATE_MASTER_BUSY_RX)
+ {
+ SMBUS_Enable_IRQ(hsmbus, SMBUS_IT_RX);
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in slave/device SMBUS mode an amount of data in non-blocking mode with Interrupt.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref SMBUS_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_Slave_Transmit_IT(SMBUS_HandleTypeDef *hsmbus, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ /* Check the parameters */
+ assert_param(IS_SMBUS_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if(hsmbus->State == HAL_SMBUS_STATE_LISTEN)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Disable Interrupts, to prevent preemption during treatment in case of multicall */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_ADDR | SMBUS_IT_TX);
+
+ /* Process Locked */
+ __HAL_LOCK(hsmbus);
+
+ hsmbus->State |= HAL_SMBUS_STATE_SLAVE_BUSY_TX;
+ hsmbus->ErrorCode = HAL_SMBUS_ERROR_NONE;
+
+ /* Set SBC bit to manage Acknowledge at each bit */
+ hsmbus->Instance->CR1 |= I2C_CR1_SBC;
+
+ /* Enable Address Acknowledge */
+ hsmbus->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Prepare transfer parameters */
+ hsmbus->pBuffPtr = pData;
+ hsmbus->XferSize = Size;
+ hsmbus->XferCount = Size;
+ hsmbus->XferOptions = XferOptions;
+
+ if(Size > MAX_NBYTE_SIZE)
+ {
+ hsmbus->XferSize = MAX_NBYTE_SIZE;
+ }
+ else
+ {
+ hsmbus->XferSize = Size;
+ }
+
+ /* Set NBYTES to write and reload if size > MAX_NBYTE_SIZE and generate RESTART */
+ if( (hsmbus->XferSize == MAX_NBYTE_SIZE) && (hsmbus->XferSize < hsmbus->XferCount) )
+ {
+ SMBUS_TransferConfig(hsmbus,0,hsmbus->XferSize, SMBUS_RELOAD_MODE | (hsmbus->XferOptions & SMBUS_SENDPEC_MODE), SMBUS_NO_STARTSTOP);
+ }
+ else
+ {
+ /* Set NBYTE to transmit */
+ SMBUS_TransferConfig(hsmbus,0,hsmbus->XferSize, hsmbus->XferOptions, SMBUS_NO_STARTSTOP);
+
+ /* If PEC mode is enable, size to transmit should be Size-1 byte, corresponding to PEC byte */
+ /* PEC byte is automatically sent by HW block, no need to manage it in Transmit process */
+ if(SMBUS_GET_PEC_MODE(hsmbus) != RESET)
+ {
+ hsmbus->XferSize--;
+ hsmbus->XferCount--;
+ }
+ }
+
+ /* Clear ADDR flag after prepare the transfer parameters */
+ /* This action will generate an acknowledge to the HOST */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus,SMBUS_FLAG_ADDR);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* Note : The SMBUS interrupts must be enabled after unlocking current process
+ to avoid the risk of SMBUS interrupt handle execution before current
+ process unlock */
+ /* REnable ADDR interrupt */
+ SMBUS_Enable_IRQ(hsmbus, SMBUS_IT_TX | SMBUS_IT_ADDR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+}
+
+/**
+ * @brief Receive in slave/device SMBUS mode an amount of data in non-blocking mode with Interrupt.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref SMBUS_XferOptions_definition
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_Slave_Receive_IT(SMBUS_HandleTypeDef *hsmbus, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ /* Check the parameters */
+ assert_param(IS_SMBUS_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if(hsmbus->State == HAL_SMBUS_STATE_LISTEN)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Disable Interrupts, to prevent preemption during treatment in case of multicall */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_ADDR | SMBUS_IT_RX);
+
+ /* Process Locked */
+ __HAL_LOCK(hsmbus);
+
+ hsmbus->State |= HAL_SMBUS_STATE_SLAVE_BUSY_RX;
+ hsmbus->ErrorCode = HAL_SMBUS_ERROR_NONE;
+
+ /* Set SBC bit to manage Acknowledge at each bit */
+ hsmbus->Instance->CR1 |= I2C_CR1_SBC;
+
+ /* Enable Address Acknowledge */
+ hsmbus->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Prepare transfer parameters */
+ hsmbus->pBuffPtr = pData;
+ hsmbus->XferSize = Size;
+ hsmbus->XferCount = Size;
+ hsmbus->XferOptions = XferOptions;
+
+ /* Set NBYTE to receive */
+ /* If XferSize equal "1", or XferSize equal "2" with PEC requested (mean 1 data byte + 1 PEC byte */
+ /* no need to set RELOAD bit mode, a ACK will be automatically generated in that case */
+ /* else need to set RELOAD bit mode to generate an automatic ACK at each byte Received */
+ /* This RELOAD bit will be reset for last BYTE to be receive in SMBUS_Slave_ISR */
+ if((hsmbus->XferSize == 1) || ((hsmbus->XferSize == 2) && (SMBUS_GET_PEC_MODE(hsmbus) != RESET)))
+ {
+ SMBUS_TransferConfig(hsmbus,0,hsmbus->XferSize, hsmbus->XferOptions, SMBUS_NO_STARTSTOP);
+ }
+ else
+ {
+ SMBUS_TransferConfig(hsmbus,0, 1, hsmbus->XferOptions | SMBUS_RELOAD_MODE, SMBUS_NO_STARTSTOP);
+ }
+
+ /* Clear ADDR flag after prepare the transfer parameters */
+ /* This action will generate an acknowledge to the HOST */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus,SMBUS_FLAG_ADDR);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* Note : The SMBUS interrupts must be enabled after unlocking current process
+ to avoid the risk of SMBUS interrupt handle execution before current
+ process unlock */
+ /* REnable ADDR interrupt */
+ SMBUS_Enable_IRQ(hsmbus, SMBUS_IT_RX | SMBUS_IT_ADDR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+}
+
+/**
+ * @brief Enable the Address listen mode with Interrupt.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_EnableListen_IT(SMBUS_HandleTypeDef *hsmbus)
+{
+ hsmbus->State = HAL_SMBUS_STATE_LISTEN;
+
+ /* Enable the Address Match interrupt */
+ SMBUS_Enable_IRQ(hsmbus, SMBUS_IT_ADDR);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Disable the Address listen mode with Interrupt.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_DisableListen_IT(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Disable Address listen mode only if a transfer is not ongoing */
+ if(hsmbus->State == HAL_SMBUS_STATE_LISTEN)
+ {
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ /* Disable the Address Match interrupt */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_ADDR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Enable the SMBUS alert mode with Interrupt.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUSx peripheral.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_EnableAlert_IT(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Enable SMBus alert */
+ hsmbus->Instance->CR1 |= I2C_CR1_ALERTEN;
+
+ /* Clear ALERT flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_ALERT);
+
+ /* Enable Alert Interrupt */
+ SMBUS_Enable_IRQ(hsmbus, SMBUS_IT_ALERT);
+
+ return HAL_OK;
+}
+/**
+ * @brief Disable the SMBUS alert mode with Interrupt.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUSx peripheral.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_DisableAlert_IT(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Enable SMBus alert */
+ hsmbus->Instance->CR1 &= ~I2C_CR1_ALERTEN;
+
+ /* Disable Alert Interrupt */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_ALERT);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Check if target device is ready for communication.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shift at right before call interface
+ * @param Trials Number of trials
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SMBUS_IsDeviceReady(SMBUS_HandleTypeDef *hsmbus, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout)
+{
+ uint32_t tickstart = 0;
+
+ __IO uint32_t SMBUS_Trials = 0;
+
+ if(hsmbus->State == HAL_SMBUS_STATE_READY)
+ {
+ if(__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_BUSY) != RESET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hsmbus);
+
+ hsmbus->State = HAL_SMBUS_STATE_BUSY;
+ hsmbus->ErrorCode = HAL_SMBUS_ERROR_NONE;
+
+ do
+ {
+ /* Generate Start */
+ hsmbus->Instance->CR2 = SMBUS_GENERATE_START(hsmbus->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_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_STOPF) == RESET) && (__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_AF) == RESET) && (hsmbus->State != HAL_SMBUS_STATE_TIMEOUT))
+ {
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout))
+ {
+ /* Device is ready */
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+
+ /* Check if the NACKF flag has not been set */
+ if (__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_AF) == RESET)
+ {
+ /* Wait until STOPF flag is reset */
+ if(SMBUS_WaitOnFlagUntilTimeout(hsmbus, SMBUS_FLAG_STOPF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear STOP Flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_STOPF);
+
+ /* Device is ready */
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Wait until STOPF flag is reset */
+ if(SMBUS_WaitOnFlagUntilTimeout(hsmbus, SMBUS_FLAG_STOPF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear NACK Flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_AF);
+
+ /* Clear STOP Flag, auto generated with autoend*/
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_STOPF);
+ }
+
+ /* Check if the maximum allowed number of trials has been reached */
+ if (SMBUS_Trials++ == Trials)
+ {
+ /* Generate Stop */
+ hsmbus->Instance->CR2 |= I2C_CR2_STOP;
+
+ /* Wait until STOPF flag is reset */
+ if(SMBUS_WaitOnFlagUntilTimeout(hsmbus, SMBUS_FLAG_STOPF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear STOP Flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_STOPF);
+ }
+ }while(SMBUS_Trials < Trials);
+
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ return HAL_TIMEOUT;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+/**
+ * @}
+ */
+
+/** @defgroup SMBUS_IRQ_Handler_and_Callbacks IRQ Handler and Callbacks
+ * @{
+ */
+
+/**
+ * @brief Handle SMBUS event interrupt request.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval None
+ */
+void HAL_SMBUS_EV_IRQHandler(SMBUS_HandleTypeDef *hsmbus)
+{
+ uint32_t tmpisrvalue = 0;
+
+ /* Use a local variable to store the current ISR flags */
+ /* This action will avoid a wrong treatment due to ISR flags change during interrupt handler */
+ tmpisrvalue = SMBUS_GET_ISR_REG(hsmbus);
+
+ /* SMBUS in mode Transmitter ---------------------------------------------------*/
+ if (((SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_TXIS) != RESET) || (SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_TCR) != RESET) || (SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_TC) != RESET) || (SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_STOPF) != RESET) || (SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_AF) != RESET)) && (__HAL_SMBUS_GET_IT_SOURCE(hsmbus, (SMBUS_IT_TCI| SMBUS_IT_STOPI| SMBUS_IT_NACKI | SMBUS_IT_TXI)) != RESET))
+ {
+ /* Slave mode selected */
+ if ((hsmbus->State & HAL_SMBUS_STATE_SLAVE_BUSY_TX) == HAL_SMBUS_STATE_SLAVE_BUSY_TX)
+ {
+ SMBUS_Slave_ISR(hsmbus);
+ }
+ /* Master mode selected */
+ else if((hsmbus->State & HAL_SMBUS_STATE_MASTER_BUSY_TX) == HAL_SMBUS_STATE_MASTER_BUSY_TX)
+ {
+ SMBUS_Master_ISR(hsmbus);
+ }
+ }
+
+ /* SMBUS in mode Receiver ----------------------------------------------------*/
+ if (((SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_RXNE) != RESET) || (SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_TCR) != RESET) || (SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_TC) != RESET) || (SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_STOPF) != RESET) || (SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_AF) != RESET)) && (__HAL_SMBUS_GET_IT_SOURCE(hsmbus, (SMBUS_IT_TCI| SMBUS_IT_STOPI| SMBUS_IT_NACKI | SMBUS_IT_RXI)) != RESET))
+ {
+ /* Slave mode selected */
+ if ((hsmbus->State & HAL_SMBUS_STATE_SLAVE_BUSY_RX) == HAL_SMBUS_STATE_SLAVE_BUSY_RX)
+ {
+ SMBUS_Slave_ISR(hsmbus);
+ }
+ /* Master mode selected */
+ else if((hsmbus->State & HAL_SMBUS_STATE_MASTER_BUSY_RX) == HAL_SMBUS_STATE_MASTER_BUSY_RX)
+ {
+ SMBUS_Master_ISR(hsmbus);
+ }
+ }
+
+ /* SMBUS in mode Listener Only --------------------------------------------------*/
+ if (((SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_ADDR) != RESET) || (SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_STOPF) != RESET) || (SMBUS_CHECK_FLAG(tmpisrvalue, SMBUS_FLAG_AF) != RESET))
+ && ((__HAL_SMBUS_GET_IT_SOURCE(hsmbus, SMBUS_IT_ADDRI) != RESET) || (__HAL_SMBUS_GET_IT_SOURCE(hsmbus, SMBUS_IT_STOPI) != RESET) || (__HAL_SMBUS_GET_IT_SOURCE(hsmbus, SMBUS_IT_NACKI) != RESET)))
+ {
+ if (hsmbus->State == HAL_SMBUS_STATE_LISTEN)
+ {
+ SMBUS_Slave_ISR(hsmbus);
+ }
+ }
+}
+
+/**
+ * @brief Handle SMBUS error interrupt request.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval None
+ */
+void HAL_SMBUS_ER_IRQHandler(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* SMBUS Bus error interrupt occurred ------------------------------------*/
+ if((__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_BERR) != RESET) && (__HAL_SMBUS_GET_IT_SOURCE(hsmbus, SMBUS_IT_ERRI) != RESET))
+ {
+ hsmbus->ErrorCode |= HAL_SMBUS_ERROR_BERR;
+
+ /* Clear BERR flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_BERR);
+ }
+
+ /* SMBUS Over-Run/Under-Run interrupt occurred ----------------------------------------*/
+ if((__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_OVR) != RESET) && (__HAL_SMBUS_GET_IT_SOURCE(hsmbus, SMBUS_IT_ERRI) != RESET))
+ {
+ hsmbus->ErrorCode |= HAL_SMBUS_ERROR_OVR;
+
+ /* Clear OVR flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_OVR);
+ }
+
+ /* SMBUS Arbitration Loss error interrupt occurred ------------------------------------*/
+ if((__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_ARLO) != RESET) && (__HAL_SMBUS_GET_IT_SOURCE(hsmbus, SMBUS_IT_ERRI) != RESET))
+ {
+ hsmbus->ErrorCode |= HAL_SMBUS_ERROR_ARLO;
+
+ /* Clear ARLO flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_ARLO);
+ }
+
+ /* SMBUS Timeout error interrupt occurred ---------------------------------------------*/
+ if((__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_TIMEOUT) != RESET) && (__HAL_SMBUS_GET_IT_SOURCE(hsmbus, SMBUS_IT_ERRI) != RESET))
+ {
+ hsmbus->ErrorCode |= HAL_SMBUS_ERROR_BUSTIMEOUT;
+
+ /* Clear TIMEOUT flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_TIMEOUT);
+ }
+
+ /* SMBUS Alert error interrupt occurred -----------------------------------------------*/
+ if((__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_ALERT) != RESET) && (__HAL_SMBUS_GET_IT_SOURCE(hsmbus, SMBUS_IT_ERRI) != RESET))
+ {
+ hsmbus->ErrorCode |= HAL_SMBUS_ERROR_ALERT;
+
+ /* Clear ALERT flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_ALERT);
+ }
+
+ /* SMBUS Packet Error Check error interrupt occurred ----------------------------------*/
+ if((__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_PECERR) != RESET) && (__HAL_SMBUS_GET_IT_SOURCE(hsmbus, SMBUS_IT_ERRI) != RESET))
+ {
+ hsmbus->ErrorCode |= HAL_SMBUS_ERROR_PECERR;
+
+ /* Clear PEC error flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_PECERR);
+ }
+
+ /* Call the Error Callback in case of Error detected */
+ if((hsmbus->ErrorCode != HAL_SMBUS_ERROR_NONE)&&(hsmbus->ErrorCode != HAL_SMBUS_ERROR_ACKF))
+ {
+ /* Do not Reset the HAL state in case of ALERT error */
+ if((hsmbus->ErrorCode & HAL_SMBUS_ERROR_ALERT) != HAL_SMBUS_ERROR_ALERT)
+ {
+ if(((hsmbus->State & HAL_SMBUS_STATE_SLAVE_BUSY_TX) == HAL_SMBUS_STATE_SLAVE_BUSY_TX)
+ || ((hsmbus->State & HAL_SMBUS_STATE_SLAVE_BUSY_RX) == HAL_SMBUS_STATE_SLAVE_BUSY_RX))
+ {
+ /* Reset only HAL_SMBUS_STATE_SLAVE_BUSY_XX */
+ /* keep HAL_SMBUS_STATE_LISTEN if set */
+ hsmbus->PreviousState = HAL_SMBUS_STATE_READY;
+ hsmbus->State = HAL_SMBUS_STATE_LISTEN;
+ }
+ }
+
+ /* Call the Error callback to prevent upper layer */
+ HAL_SMBUS_ErrorCallback(hsmbus);
+ }
+}
+
+/**
+ * @brief Master Tx Transfer completed callback.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval None
+ */
+ __weak void HAL_SMBUS_MasterTxCpltCallback(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsmbus);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SMBUS_TxCpltCallback() could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Master Rx Transfer completed callback.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval None
+ */
+__weak void HAL_SMBUS_MasterRxCpltCallback(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsmbus);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SMBUS_TxCpltCallback() could be implemented in the user file
+ */
+}
+
+/** @brief Slave Tx Transfer completed callback.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval None
+ */
+ __weak void HAL_SMBUS_SlaveTxCpltCallback(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsmbus);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SMBUS_TxCpltCallback() could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Slave Rx Transfer completed callback.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval None
+ */
+__weak void HAL_SMBUS_SlaveRxCpltCallback(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsmbus);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SMBUS_TxCpltCallback() could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Slave Address Match callback.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @param TransferDirection: Master request Transfer Direction (Write/Read)
+ * @param AddrMatchCode: Address Match Code
+ * @retval None
+ */
+__weak void HAL_SMBUS_AddrCallback(SMBUS_HandleTypeDef *hsmbus, uint8_t TransferDirection, uint16_t AddrMatchCode)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsmbus);
+ UNUSED(TransferDirection);
+ UNUSED(AddrMatchCode);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SMBUS_AddrCallback() could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Listen Complete callback.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval None
+ */
+__weak void HAL_SMBUS_ListenCpltCallback(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsmbus);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SMBUS_ListenCpltCallback() could be implemented in the user file
+ */
+}
+
+/**
+ * @brief SMBUS error callback.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval None
+ */
+ __weak void HAL_SMBUS_ErrorCallback(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsmbus);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_SMBUS_ErrorCallback() could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup SMBUS_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 Return the SMBUS handle state.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval HAL state
+ */
+uint32_t HAL_SMBUS_GetState(SMBUS_HandleTypeDef *hsmbus)
+{
+ /* Return SMBUS handle state */
+ return hsmbus->State;
+}
+
+/**
+* @brief Return the SMBUS error code.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+* @retval SMBUS Error Code
+*/
+uint32_t HAL_SMBUS_GetError(SMBUS_HandleTypeDef *hsmbus)
+{
+ return hsmbus->ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup SMBUS_Private_Functions SMBUS Private Functions
+ * @brief Data transfers Private functions
+ * @{
+ */
+
+/**
+ * @brief Interrupt Sub-Routine which handle the Interrupt Flags Master Mode.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SMBUS_Master_ISR(SMBUS_HandleTypeDef *hsmbus)
+{
+ uint16_t DevAddress;
+
+ /* Process Locked */
+ __HAL_LOCK(hsmbus);
+
+ if(__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_AF) != RESET)
+ {
+ /* Clear NACK Flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_AF);
+
+ /* Set corresponding Error Code */
+ /* No need to generate STOP, it is automatically done */
+ hsmbus->ErrorCode |= HAL_SMBUS_ERROR_ACKF;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* Call the Error callback to prevent upper layer */
+ HAL_SMBUS_ErrorCallback(hsmbus);
+ }
+ else if(__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_STOPF) != RESET)
+ {
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ if(hsmbus->State == HAL_SMBUS_STATE_MASTER_BUSY_TX)
+ {
+ /* Disable Interrupt */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_TX);
+
+ /* Clear STOP Flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ SMBUS_RESET_CR2(hsmbus);
+
+ /* Flush remaining data in Fifo register in case of error occurs before TXEmpty */
+ /* Disable the selected SMBUS peripheral */
+ __HAL_SMBUS_DISABLE(hsmbus);
+
+ hsmbus->PreviousState = HAL_SMBUS_STATE_READY;
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* REenable the selected SMBUS peripheral */
+ __HAL_SMBUS_ENABLE(hsmbus);
+
+ HAL_SMBUS_MasterTxCpltCallback(hsmbus);
+ }
+ else if(hsmbus->State == HAL_SMBUS_STATE_MASTER_BUSY_RX)
+ {
+ /* Disable Interrupt */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_RX);
+
+ /* Clear STOP Flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ SMBUS_RESET_CR2(hsmbus);
+
+ hsmbus->PreviousState = HAL_SMBUS_STATE_READY;
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ HAL_SMBUS_MasterRxCpltCallback(hsmbus);
+ }
+ }
+ else if(__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_RXNE) != RESET)
+ {
+ /* Read data from RXDR */
+ (*hsmbus->pBuffPtr++) = hsmbus->Instance->RXDR;
+ hsmbus->XferSize--;
+ hsmbus->XferCount--;
+ }
+ else if(__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_TXIS) != RESET)
+ {
+ /* Write data to TXDR */
+ hsmbus->Instance->TXDR = (*hsmbus->pBuffPtr++);
+ hsmbus->XferSize--;
+ hsmbus->XferCount--;
+ }
+ else if(__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_TCR) != RESET)
+ {
+ if((hsmbus->XferSize == 0)&&(hsmbus->XferCount!=0))
+ {
+ DevAddress = (hsmbus->Instance->CR2 & I2C_CR2_SADD);
+
+ if(hsmbus->XferCount > MAX_NBYTE_SIZE)
+ {
+ SMBUS_TransferConfig(hsmbus, DevAddress, MAX_NBYTE_SIZE, (SMBUS_RELOAD_MODE | (hsmbus->XferOptions & SMBUS_SENDPEC_MODE)), SMBUS_NO_STARTSTOP);
+ hsmbus->XferSize = MAX_NBYTE_SIZE;
+ }
+ else
+ {
+ hsmbus->XferSize = hsmbus->XferCount;
+ SMBUS_TransferConfig(hsmbus,DevAddress,hsmbus->XferSize, hsmbus->XferOptions, SMBUS_NO_STARTSTOP);
+ /* If PEC mode is enable, size to transmit should be Size-1 byte, corresponding to PEC byte */
+ /* PEC byte is automatically sent by HW block, no need to manage it in Transmit process */
+ if(SMBUS_GET_PEC_MODE(hsmbus) != RESET)
+ {
+ hsmbus->XferSize--;
+ hsmbus->XferCount--;
+ }
+ }
+ }
+ else if((hsmbus->XferSize == 0)&&(hsmbus->XferCount==0))
+ {
+ /* Call TxCpltCallback() if no stop mode is set */
+ if(SMBUS_GET_STOP_MODE(hsmbus) != SMBUS_AUTOEND_MODE)
+ {
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ if(hsmbus->State == HAL_SMBUS_STATE_MASTER_BUSY_TX)
+ {
+ /* Disable Interrupt */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_TX);
+ hsmbus->PreviousState = hsmbus->State;
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ HAL_SMBUS_MasterTxCpltCallback(hsmbus);
+ }
+ else if(hsmbus->State == HAL_SMBUS_STATE_MASTER_BUSY_RX)
+ {
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_RX);
+ hsmbus->PreviousState = hsmbus->State;
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ HAL_SMBUS_MasterRxCpltCallback(hsmbus);
+ }
+ }
+ }
+ }
+ else if(__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_TC) != RESET)
+ {
+ if(hsmbus->XferCount == 0)
+ {
+ /* Specific use case for Quick command */
+ if(hsmbus->pBuffPtr == NULL)
+ {
+ /* Generate a Stop command */
+ hsmbus->Instance->CR2 |= I2C_CR2_STOP;
+ }
+ /* Call TxCpltCallback() if no stop mode is set */
+ else if(SMBUS_GET_STOP_MODE(hsmbus) != SMBUS_AUTOEND_MODE)
+ {
+ /* No Generate Stop, to permit restart mode */
+ /* The stop will be done at the end of transfer, when SMBUS_AUTOEND_MODE enable */
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ if(hsmbus->State == HAL_SMBUS_STATE_MASTER_BUSY_TX)
+ {
+ /* Disable Interrupt */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_TX);
+ hsmbus->PreviousState = hsmbus->State;
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ HAL_SMBUS_MasterTxCpltCallback(hsmbus);
+ }
+ else if(hsmbus->State == HAL_SMBUS_STATE_MASTER_BUSY_RX)
+ {
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_RX);
+ hsmbus->PreviousState = hsmbus->State;
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ HAL_SMBUS_MasterRxCpltCallback(hsmbus);
+ }
+ }
+ }
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ return HAL_OK;
+}
+/**
+ * @brief Interrupt Sub-Routine which handle the Interrupt Flags Slave Mode.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SMBUS_Slave_ISR(SMBUS_HandleTypeDef *hsmbus)
+{
+ uint8_t TransferDirection = 0;
+ uint16_t SlaveAddrCode = 0;
+
+ /* Process Locked */
+ __HAL_LOCK(hsmbus);
+
+ if(__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_AF) != RESET)
+ {
+ /* Check that SMBUS transfer finished */
+ /* if yes, normal usecase, a NACK is sent by the HOST when Transfer is finished */
+ /* Mean XferCount == 0*/
+ /* So clear Flag NACKF only */
+ if(hsmbus->XferCount == 0)
+ {
+ /* Clear NACK Flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_AF);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+ }
+ else
+ {
+ /* if no, error usecase, a Non-Acknowledge of last Data is generated by the HOST*/
+ /* Clear NACK Flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_AF);
+
+ /* Set HAL State to "Idle" State, mean to LISTEN state */
+ /* So reset Slave Busy state */
+ hsmbus->PreviousState = hsmbus->State;
+ hsmbus->State &= ~((uint32_t)HAL_SMBUS_STATE_SLAVE_BUSY_TX);
+ hsmbus->State &= ~((uint32_t)HAL_SMBUS_STATE_SLAVE_BUSY_RX);
+
+ /* Disable RX/TX Interrupts, keep only ADDR Interrupt */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_RX | SMBUS_IT_TX);
+
+ /* Set ErrorCode corresponding to a Non-Acknowledge */
+ hsmbus->ErrorCode |= HAL_SMBUS_ERROR_ACKF;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* Call the Error callback to prevent upper layer */
+ HAL_SMBUS_ErrorCallback(hsmbus);
+ }
+ }
+ else if(__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_ADDR) != RESET)
+ {
+ TransferDirection = SMBUS_GET_DIR(hsmbus);
+ SlaveAddrCode = SMBUS_GET_ADDR_MATCH(hsmbus);
+
+ /* Disable ADDR interrupt to prevent multiple ADDRInterrupt*/
+ /* Other ADDRInterrupt will be treat in next Listen usecase */
+ __HAL_SMBUS_DISABLE_IT(hsmbus, SMBUS_IT_ADDRI);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* Call Slave Addr callback */
+ HAL_SMBUS_AddrCallback(hsmbus, TransferDirection, SlaveAddrCode);
+ }
+ else if((__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_RXNE) != RESET) || (__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_TCR) != RESET))
+ {
+ if( (hsmbus->State & HAL_SMBUS_STATE_SLAVE_BUSY_RX) == HAL_SMBUS_STATE_SLAVE_BUSY_RX)
+ {
+ /* Read data from RXDR */
+ (*hsmbus->pBuffPtr++) = hsmbus->Instance->RXDR;
+ hsmbus->XferSize--;
+ hsmbus->XferCount--;
+
+ if(hsmbus->XferCount == 1)
+ {
+ /* Receive last Byte, can be PEC byte in case of PEC BYTE enabled */
+ /* or only the last Byte of Transfer */
+ /* So reset the RELOAD bit mode */
+ hsmbus->XferOptions &= ~SMBUS_RELOAD_MODE;
+ SMBUS_TransferConfig(hsmbus,0 ,1 , hsmbus->XferOptions, SMBUS_NO_STARTSTOP);
+ }
+ else if(hsmbus->XferCount == 0)
+ {
+ /* Last Byte is received, disable Interrupt */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_RX);
+
+ /* Remove HAL_SMBUS_STATE_SLAVE_BUSY_RX, keep only HAL_SMBUS_STATE_LISTEN */
+ hsmbus->PreviousState = hsmbus->State;
+ hsmbus->State &= ~((uint32_t)HAL_SMBUS_STATE_SLAVE_BUSY_RX);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* Call the Rx complete callback to inform upper layer of the end of receive process */
+ HAL_SMBUS_SlaveRxCpltCallback(hsmbus);
+ }
+ else
+ {
+ /* Set Reload for next Bytes */
+ SMBUS_TransferConfig(hsmbus,0, 1, SMBUS_RELOAD_MODE | (hsmbus->XferOptions & SMBUS_SENDPEC_MODE), SMBUS_NO_STARTSTOP);
+
+ /* Ack last Byte Read */
+ hsmbus->Instance->CR2 &= ~I2C_CR2_NACK;
+ }
+ }
+ else if( (hsmbus->State & HAL_SMBUS_STATE_SLAVE_BUSY_TX) == HAL_SMBUS_STATE_SLAVE_BUSY_TX)
+ {
+ if((hsmbus->XferSize == 0)&&(hsmbus->XferCount!=0))
+ {
+ if(hsmbus->XferCount > MAX_NBYTE_SIZE)
+ {
+ SMBUS_TransferConfig(hsmbus, 0, MAX_NBYTE_SIZE, (SMBUS_RELOAD_MODE | (hsmbus->XferOptions & SMBUS_SENDPEC_MODE)), SMBUS_NO_STARTSTOP);
+ hsmbus->XferSize = MAX_NBYTE_SIZE;
+ }
+ else
+ {
+ hsmbus->XferSize = hsmbus->XferCount;
+ SMBUS_TransferConfig(hsmbus, 0, hsmbus->XferSize, hsmbus->XferOptions, SMBUS_NO_STARTSTOP);
+ /* If PEC mode is enable, size to transmit should be Size-1 byte, corresponding to PEC byte */
+ /* PEC byte is automatically sent by HW block, no need to manage it in Transmit process */
+ if(SMBUS_GET_PEC_MODE(hsmbus) != RESET)
+ {
+ hsmbus->XferSize--;
+ hsmbus->XferCount--;
+ }
+ }
+ }
+ }
+ }
+ else if(__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_TXIS) != RESET)
+ {
+ /* Write data to TXDR only if XferCount not reach "0" */
+ /* A TXIS flag can be set, during STOP treatment */
+ /* Check if all Datas have already been sent */
+ /* If it is the case, this last write in TXDR is not sent, correspond to a dummy TXIS event */
+ if(hsmbus->XferCount > 0)
+ {
+ /* Write data to TXDR */
+ hsmbus->Instance->TXDR = (*hsmbus->pBuffPtr++);
+ hsmbus->XferCount--;
+ hsmbus->XferSize--;
+ }
+
+ if(hsmbus->XferCount == 0)
+ {
+ /* Last Byte is Transmitted */
+ /* Remove HAL_SMBUS_STATE_SLAVE_BUSY_TX, keep only HAL_SMBUS_STATE_LISTEN */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_TX);
+ hsmbus->PreviousState = hsmbus->State;
+ hsmbus->State &= ~((uint32_t)HAL_SMBUS_STATE_SLAVE_BUSY_TX);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* Call the Tx complete callback to inform upper layer of the end of transmit process */
+ HAL_SMBUS_SlaveTxCpltCallback(hsmbus);
+ }
+ }
+
+ /* Check if STOPF is set */
+ if(__HAL_SMBUS_GET_FLAG(hsmbus, SMBUS_FLAG_STOPF) != RESET)
+ {
+ if((hsmbus->State & HAL_SMBUS_STATE_LISTEN) == HAL_SMBUS_STATE_LISTEN)
+ {
+ /* Disable RX and TX Interrupts */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_RX | SMBUS_IT_TX);
+
+ /* Disable ADDR Interrupt */
+ SMBUS_Disable_IRQ(hsmbus, SMBUS_IT_ADDR);
+
+ /* Disable Address Acknowledge */
+ hsmbus->Instance->CR2 |= I2C_CR2_NACK;
+
+ /* Clear Configuration Register 2 */
+ SMBUS_RESET_CR2(hsmbus);
+
+ /* Clear STOP Flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus, SMBUS_FLAG_STOPF);
+
+ /* Clear ADDR flag */
+ __HAL_SMBUS_CLEAR_FLAG(hsmbus,SMBUS_FLAG_ADDR);
+
+ hsmbus->XferOptions = 0;
+ hsmbus->PreviousState = hsmbus->State;
+ hsmbus->State = HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ /* Call the Listen Complete callback, to prevent upper layer of the end of Listen usecase */
+ HAL_SMBUS_ListenCpltCallback(hsmbus);
+ }
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ return HAL_OK;
+}
+/**
+ * @brief Manage the enabling of Interrupts.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @param InterruptRequest Value of @ref SMBUS_Interrupt_configuration_definition.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SMBUS_Enable_IRQ(SMBUS_HandleTypeDef *hsmbus, uint16_t InterruptRequest)
+{
+ uint32_t tmpisr = 0;
+
+ if((InterruptRequest & SMBUS_IT_ALERT) == SMBUS_IT_ALERT)
+ {
+ /* Enable ERR interrupt */
+ tmpisr |= SMBUS_IT_ERRI;
+ }
+
+ if((InterruptRequest & SMBUS_IT_ADDR) == SMBUS_IT_ADDR)
+ {
+ /* Enable ADDR, STOP interrupt */
+ tmpisr |= SMBUS_IT_ADDRI | SMBUS_IT_STOPI | SMBUS_IT_NACKI | SMBUS_IT_ERRI;
+ }
+
+ if((InterruptRequest & SMBUS_IT_TX) == SMBUS_IT_TX)
+ {
+ /* Enable ERR, TC, STOP, NACK, RXI interrupt */
+ tmpisr |= SMBUS_IT_ERRI | SMBUS_IT_TCI | SMBUS_IT_STOPI | SMBUS_IT_NACKI | SMBUS_IT_TXI;
+ }
+
+ if((InterruptRequest & SMBUS_IT_RX) == SMBUS_IT_RX)
+ {
+ /* Enable ERR, TC, STOP, NACK, TXI interrupt */
+ tmpisr |= SMBUS_IT_ERRI | SMBUS_IT_TCI | SMBUS_IT_STOPI | SMBUS_IT_NACKI | SMBUS_IT_RXI;
+ }
+
+ /* Enable interrupts only at the end */
+ /* to avoid the risk of SMBUS interrupt handle execution before */
+ /* all interrupts requested done */
+ __HAL_SMBUS_ENABLE_IT(hsmbus, tmpisr);
+
+ return HAL_OK;
+}
+/**
+ * @brief Manage the disabling of Interrupts.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @param InterruptRequest Value of @ref SMBUS_Interrupt_configuration_definition.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SMBUS_Disable_IRQ(SMBUS_HandleTypeDef *hsmbus, uint16_t InterruptRequest)
+{
+ uint32_t tmpisr = 0;
+
+ if( ((InterruptRequest & SMBUS_IT_ALERT) == SMBUS_IT_ALERT) && (hsmbus->State == HAL_SMBUS_STATE_READY) )
+ {
+ /* Disable ERR interrupt */
+ tmpisr |= SMBUS_IT_ERRI;
+ }
+
+ if((InterruptRequest & SMBUS_IT_TX) == SMBUS_IT_TX)
+ {
+ /* Disable TC, STOP, NACK, TXI interrupt */
+ tmpisr |= SMBUS_IT_TCI | SMBUS_IT_TXI;
+
+ if((SMBUS_GET_ALERT_ENABLED(hsmbus) == RESET)
+ && ((hsmbus->State & HAL_SMBUS_STATE_LISTEN) != HAL_SMBUS_STATE_LISTEN))
+ {
+ /* Disable ERR interrupt */
+ tmpisr |= SMBUS_IT_ERRI;
+ }
+
+ if((hsmbus->State & HAL_SMBUS_STATE_LISTEN) != HAL_SMBUS_STATE_LISTEN)
+ {
+ /* Disable STOPI, NACKI */
+ tmpisr |= SMBUS_IT_STOPI | SMBUS_IT_NACKI;
+ }
+ }
+
+ if((InterruptRequest & SMBUS_IT_RX) == SMBUS_IT_RX)
+ {
+ /* Disable TC, STOP, NACK, RXI interrupt */
+ tmpisr |= SMBUS_IT_TCI | SMBUS_IT_RXI;
+
+ if((SMBUS_GET_ALERT_ENABLED(hsmbus) == RESET)
+ && ((hsmbus->State & HAL_SMBUS_STATE_LISTEN) != HAL_SMBUS_STATE_LISTEN))
+ {
+ /* Disable ERR interrupt */
+ tmpisr |= SMBUS_IT_ERRI;
+ }
+
+ if((hsmbus->State & HAL_SMBUS_STATE_LISTEN) != HAL_SMBUS_STATE_LISTEN)
+ {
+ /* Disable STOPI, NACKI */
+ tmpisr |= SMBUS_IT_STOPI | SMBUS_IT_NACKI;
+ }
+ }
+
+ if((InterruptRequest & SMBUS_IT_ADDR) == SMBUS_IT_ADDR)
+ {
+ /* Enable ADDR, STOP interrupt */
+ tmpisr |= SMBUS_IT_ADDRI | SMBUS_IT_STOPI | SMBUS_IT_NACKI;
+
+ if(SMBUS_GET_ALERT_ENABLED(hsmbus) == RESET)
+ {
+ /* Disable ERR interrupt */
+ tmpisr |= SMBUS_IT_ERRI;
+ }
+ }
+
+ /* Disable interrupts only at the end */
+ /* to avoid a breaking situation like at "t" time */
+ /* all disable interrupts request are not done */
+ __HAL_SMBUS_DISABLE_IT(hsmbus, tmpisr);
+
+ return HAL_OK;
+}
+/**
+ * @brief Handle SMBUS Communication Timeout.
+ * @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
+ * the configuration information for the specified SMBUS.
+ * @param Flag Specifies the SMBUS flag to check.
+ * @param Status The new Flag status (SET or RESET).
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SMBUS_WaitOnFlagUntilTimeout(SMBUS_HandleTypeDef *hsmbus, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
+{
+ uint32_t tickstart = HAL_GetTick();
+
+ /* Wait until flag is set */
+ if(Status == RESET)
+ {
+ while(__HAL_SMBUS_GET_FLAG(hsmbus, Flag) == RESET)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout))
+ {
+ hsmbus->PreviousState = hsmbus->State;
+ hsmbus->State= HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ else
+ {
+ while(__HAL_SMBUS_GET_FLAG(hsmbus, Flag) != RESET)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout))
+ {
+ hsmbus->PreviousState = hsmbus->State;
+ hsmbus->State= HAL_SMBUS_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsmbus);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle SMBUSx communication when starting transfer or during transfer (TC or TCR flag are set).
+ * @param hsmbus SMBUS 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 SMBUS START condition generation.
+ * This parameter can be one or a combination of the following values:
+ * @arg @ref SMBUS_RELOAD_MODE Enable Reload mode.
+ * @arg @ref SMBUS_AUTOEND_MODE Enable Automatic end mode.
+ * @arg @ref SMBUS_SOFTEND_MODE Enable Software end mode and Reload mode.
+ * @arg @ref SMBUS_SENDPEC_MODE Enable Packet Error Calculation mode.
+ * @param Request New state of the SMBUS START condition generation.
+ * This parameter can be one of the following values:
+ * @arg @ref SMBUS_NO_STARTSTOP Don't Generate stop and start condition.
+ * @arg @ref SMBUS_GENERATE_STOP Generate stop condition (Size should be set to 0).
+ * @arg @ref SMBUS_GENERATE_START_READ Generate Restart for read request.
+ * @arg @ref SMBUS_GENERATE_START_WRITE Generate Restart for write request.
+ * @retval None
+ */
+static void SMBUS_TransferConfig(SMBUS_HandleTypeDef *hsmbus, uint16_t DevAddress, uint8_t Size, uint32_t Mode, uint32_t Request)
+{
+ uint32_t tmpreg = 0;
+
+ /* Check the parameters */
+ assert_param(IS_SMBUS_ALL_INSTANCE(hsmbus->Instance));
+ assert_param(IS_SMBUS_TRANSFER_MODE(Mode));
+ assert_param(IS_SMBUS_TRANSFER_REQUEST(Request));
+
+ /* Get the CR2 register value */
+ tmpreg = hsmbus->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 | I2C_CR2_PECBYTE));
+
+ /* 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 */
+ hsmbus->Instance->CR2 = tmpreg;
+}
+/**
+ * @}
+ */
+
+#endif /* HAL_SMBUS_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
