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Diffstat (limited to 'Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_i2c.c')
| -rw-r--r-- | Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_i2c.c | 3649 |
1 files changed, 3649 insertions, 0 deletions
diff --git a/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_i2c.c b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_i2c.c new file mode 100644 index 0000000..31dad1d --- /dev/null +++ b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_i2c.c @@ -0,0 +1,3649 @@ +/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_i2c.c
+ * @author MCD Application Team
+ * @version V1.3.2
+ * @date 26-June-2015
+ * @brief I2C HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the Inter Integrated Circuit (I2C) peripheral:
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral Control functions
+ * + Peripheral State functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+ The I2C HAL driver can be used as follows:
+
+ (#) Declare a I2C_HandleTypeDef handle structure, for example:
+ I2C_HandleTypeDef hi2c;
+
+ (#)Initialize the I2C low level resources by implement the HAL_I2C_MspInit() API:
+ (##) Enable the I2Cx interface clock
+ (##) I2C pins configuration
+ (+++) Enable the clock for the I2C GPIOs
+ (+++) Configure I2C pins as alternate function open-drain
+ (##) NVIC configuration if you need to use interrupt process
+ (+++) Configure the I2Cx interrupt priority
+ (+++) Enable the NVIC I2C IRQ Channel
+ (##) DMA Configuration if you need to use DMA process
+ (+++) Declare a DMA_HandleTypeDef handle structure for the transmit or receive stream
+ (+++) Enable the DMAx interface clock using
+ (+++) Configure the DMA handle parameters
+ (+++) Configure the DMA Tx or Rx Stream
+ (+++) Associate the initialized DMA handle to the hi2c DMA Tx or Rx handle
+ (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on
+ the DMA Tx or Rx Stream
+
+ (#) Configure the Communication Speed, Duty cycle, Addressing mode, Own Address1,
+ Dual Addressing mode, Own Address2, General call and Nostretch mode in the hi2c Init structure.
+
+ (#) Initialize the I2C registers by calling the HAL_I2C_Init(), configures also the low level Hardware
+ (GPIO, CLOCK, NVIC...etc) by calling the customized HAL_I2C_MspInit(&hi2c) API.
+
+ (#) To check if target device is ready for communication, use the function HAL_I2C_IsDeviceReady()
+
+ (#) For I2C IO and IO MEM operations, three operation modes are available within this driver :
+
+ *** Polling mode IO operation ***
+ =================================
+ [..]
+ (+) Transmit in master mode an amount of data in blocking mode using HAL_I2C_Master_Transmit()
+ (+) Receive in master mode an amount of data in blocking mode using HAL_I2C_Master_Receive()
+ (+) Transmit in slave mode an amount of data in blocking mode using HAL_I2C_Slave_Transmit()
+ (+) Receive in slave mode an amount of data in blocking mode using HAL_I2C_Slave_Receive()
+
+ *** Polling mode IO MEM operation ***
+ =====================================
+ [..]
+ (+) Write an amount of data in blocking mode to a specific memory address using HAL_I2C_Mem_Write()
+ (+) Read an amount of data in blocking mode from a specific memory address using HAL_I2C_Mem_Read()
+
+
+ *** Interrupt mode IO operation ***
+ ===================================
+ [..]
+ (+) Transmit in master mode an amount of data in non blocking mode using HAL_I2C_Master_Transmit_IT()
+ (+) At transmission end of transfer HAL_I2C_MasterTxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback
+ (+) Receive in master mode an amount of data in non blocking mode using HAL_I2C_Master_Receive_IT()
+ (+) At reception end of transfer HAL_I2C_MasterRxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback
+ (+) Transmit in slave mode an amount of data in non blocking mode using HAL_I2C_Slave_Transmit_IT()
+ (+) At transmission end of transfer HAL_I2C_SlaveTxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback
+ (+) Receive in slave mode an amount of data in non blocking mode using HAL_I2C_Slave_Receive_IT()
+ (+) At reception end of transfer HAL_I2C_SlaveRxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback
+ (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer HAL_I2C_ErrorCallback
+
+ *** Interrupt mode IO MEM operation ***
+ =======================================
+ [..]
+ (+) Write an amount of data in no-blocking mode with Interrupt to a specific memory address using
+ HAL_I2C_Mem_Write_IT()
+ (+) At MEM end of write transfer HAL_I2C_MemTxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_MemTxCpltCallback
+ (+) Read an amount of data in no-blocking mode with Interrupt from a specific memory address using
+ HAL_I2C_Mem_Read_IT()
+ (+) At MEM end of read transfer HAL_I2C_MemRxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_MemRxCpltCallback
+ (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer HAL_I2C_ErrorCallback
+
+ *** DMA mode IO operation ***
+ ==============================
+ [..]
+ (+) Transmit in master mode an amount of data in non blocking mode (DMA) using
+ HAL_I2C_Master_Transmit_DMA()
+ (+) At transmission end of transfer HAL_I2C_MasterTxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback
+ (+) Receive in master mode an amount of data in non blocking mode (DMA) using
+ HAL_I2C_Master_Receive_DMA()
+ (+) At reception end of transfer HAL_I2C_MasterRxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback
+ (+) Transmit in slave mode an amount of data in non blocking mode (DMA) using
+ HAL_I2C_Slave_Transmit_DMA()
+ (+) At transmission end of transfer HAL_I2C_SlaveTxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback
+ (+) Receive in slave mode an amount of data in non blocking mode (DMA) using
+ HAL_I2C_Slave_Receive_DMA()
+ (+) At reception end of transfer HAL_I2C_SlaveRxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback
+ (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer HAL_I2C_ErrorCallback
+
+ *** DMA mode IO MEM operation ***
+ =================================
+ [..]
+ (+) Write an amount of data in no-blocking mode with DMA to a specific memory address using
+ HAL_I2C_Mem_Write_DMA()
+ (+) At MEM end of write transfer HAL_I2C_MemTxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_MemTxCpltCallback
+ (+) Read an amount of data in no-blocking mode with DMA from a specific memory address using
+ HAL_I2C_Mem_Read_DMA()
+ (+) At MEM end of read transfer HAL_I2C_MemRxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_I2C_MemRxCpltCallback
+ (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer HAL_I2C_ErrorCallback
+
+
+ *** I2C HAL driver macros list ***
+ ==================================
+ [..]
+ Below the list of most used macros in I2C HAL driver.
+
+ (+) __HAL_I2C_ENABLE: Enable the I2C peripheral
+ (+) __HAL_I2C_DISABLE: Disable the I2C peripheral
+ (+) __HAL_I2C_GET_FLAG : Checks whether the specified I2C flag is set or not
+ (+) __HAL_I2C_CLEAR_FLAG : Clear the specified I2C pending flag
+ (+) __HAL_I2C_ENABLE_IT: Enable the specified I2C interrupt
+ (+) __HAL_I2C_DISABLE_IT: Disable the specified I2C interrupt
+
+ [..]
+ (@) You can refer to the I2C HAL driver header file for more useful macros
+
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_hal.h"
+
+/** @addtogroup STM32F4xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup I2C I2C
+ * @brief I2C HAL module driver
+ * @{
+ */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @addtogroup I2C_Private_Constants
+ * @{
+ */
+#define I2C_TIMEOUT_FLAG ((uint32_t)35) /* 35 ms */
+#define I2C_TIMEOUT_ADDR_SLAVE ((uint32_t)10000) /* 10 s */
+#define I2C_TIMEOUT_BUSY_FLAG ((uint32_t)10000) /* 10 s */
+/**
+ * @}
+ */
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/** @addtogroup 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_MasterRequestWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout);
+static HAL_StatusTypeDef I2C_MasterRequestRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout);
+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_WaitOnMasterAddressFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, uint32_t Timeout);
+
+static HAL_StatusTypeDef I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_MasterTransmit_BTF(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_MasterReceive_BTF(I2C_HandleTypeDef *hi2c);
+
+static HAL_StatusTypeDef I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C_Slave_AF(I2C_HandleTypeDef *hi2c);
+/**
+ * @}
+ */
+
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup I2C_Exported_Functions I2C Exported Functions
+ * @{
+ */
+
+/** @defgroup I2C_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @brief Initialization and Configuration functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Initialization and de-initialization functions #####
+ ===============================================================================
+ [..] This subsection provides a set of functions allowing to initialize and
+ de-initialize the I2Cx peripheral:
+
+ (+) User must Implement HAL_I2C_MspInit() function in which he configures
+ all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC).
+
+ (+) Call the function HAL_I2C_Init() to configure the selected device with
+ the selected configuration:
+ (++) Communication Speed
+ (++) Duty cycle
+ (++) Addressing mode
+ (++) Own Address 1
+ (++) Dual Addressing mode
+ (++) Own Address 2
+ (++) General call mode
+ (++) Nostretch mode
+
+ (+) Call the function HAL_I2C_DeInit() to restore the default configuration
+ of the selected I2Cx peripheral.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the I2C according to the specified parameters
+ * in the I2C_InitTypeDef and create the associated handle.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c)
+{
+ uint32_t freqrange = 0;
+ uint32_t pclk1 = 0;
+
+ /* Check the I2C handle allocation */
+ if(hi2c == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+ assert_param(IS_I2C_CLOCK_SPEED(hi2c->Init.ClockSpeed));
+ assert_param(IS_I2C_DUTY_CYCLE(hi2c->Init.DutyCycle));
+ assert_param(IS_I2C_OWN_ADDRESS1(hi2c->Init.OwnAddress1));
+ assert_param(IS_I2C_ADDRESSING_MODE(hi2c->Init.AddressingMode));
+ assert_param(IS_I2C_DUAL_ADDRESS(hi2c->Init.DualAddressMode));
+ assert_param(IS_I2C_OWN_ADDRESS2(hi2c->Init.OwnAddress2));
+ assert_param(IS_I2C_GENERAL_CALL(hi2c->Init.GeneralCallMode));
+ assert_param(IS_I2C_NO_STRETCH(hi2c->Init.NoStretchMode));
+
+ if(hi2c->State == HAL_I2C_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ hi2c->Lock = HAL_UNLOCKED;
+ /* Init the low level hardware : GPIO, CLOCK, NVIC */
+ HAL_I2C_MspInit(hi2c);
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+
+ /* Disable the selected I2C peripheral */
+ __HAL_I2C_DISABLE(hi2c);
+
+ /* Get PCLK1 frequency */
+ pclk1 = HAL_RCC_GetPCLK1Freq();
+
+ /* Calculate frequency range */
+ freqrange = I2C_FREQRANGE(pclk1);
+
+ /*---------------------------- I2Cx CR2 Configuration ----------------------*/
+ /* Configure I2Cx: Frequency range */
+ hi2c->Instance->CR2 = freqrange;
+
+ /*---------------------------- I2Cx TRISE Configuration --------------------*/
+ /* Configure I2Cx: Rise Time */
+ hi2c->Instance->TRISE = I2C_RISE_TIME(freqrange, hi2c->Init.ClockSpeed);
+
+ /*---------------------------- I2Cx CCR Configuration ----------------------*/
+ /* Configure I2Cx: Speed */
+ hi2c->Instance->CCR = I2C_SPEED(pclk1, hi2c->Init.ClockSpeed, hi2c->Init.DutyCycle);
+
+ /*---------------------------- I2Cx CR1 Configuration ----------------------*/
+ /* Configure I2Cx: Generalcall and NoStretch mode */
+ hi2c->Instance->CR1 = (hi2c->Init.GeneralCallMode | hi2c->Init.NoStretchMode);
+
+ /*---------------------------- I2Cx OAR1 Configuration ---------------------*/
+ /* Configure I2Cx: Own Address1 and addressing mode */
+ hi2c->Instance->OAR1 = (hi2c->Init.AddressingMode | hi2c->Init.OwnAddress1);
+
+ /*---------------------------- I2Cx OAR2 Configuration ---------------------*/
+ /* Configure I2Cx: Dual mode and Own Address2 */
+ hi2c->Instance->OAR2 = (hi2c->Init.DualAddressMode | hi2c->Init.OwnAddress2);
+
+ /* Enable the selected I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DeInitializes the I2C peripheral.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c)
+{
+ /* Check the I2C handle allocation */
+ if(hi2c == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+
+ /* Disable the I2C Peripheral Clock */
+ __HAL_I2C_DISABLE(hi2c);
+
+ /* DeInit the low level hardware: GPIO, CLOCK, NVIC */
+ HAL_I2C_MspDeInit(hi2c);
+
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->State = HAL_I2C_STATE_RESET;
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief I2C MSP Init.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+ __weak void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2C_MspInit could be implemented in the user file
+ */
+}
+
+/**
+ * @brief I2C MSP DeInit
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+ __weak void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_I2C_MspDeInit could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_Exported_Functions_Group2 IO operation functions
+ * @brief Data transfers functions
+ *
+@verbatim
+ ===============================================================================
+ ##### IO operation functions #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to manage the I2C data
+ transfers.
+
+ (#) There are two modes of transfer:
+ (++) Blocking mode : The communication is performed in the polling mode.
+ The status of all data processing is returned by the same function
+ after finishing transfer.
+ (++) No-Blocking mode : The communication is performed using Interrupts
+ or DMA. These functions return the status of the transfer startup.
+ The end of the data processing will be indicated through the
+ dedicated I2C IRQ when using Interrupt mode or the DMA IRQ when
+ using DMA mode.
+
+ (#) Blocking mode functions are :
+ (++) HAL_I2C_Master_Transmit()
+ (++) HAL_I2C_Master_Receive()
+ (++) HAL_I2C_Slave_Transmit()
+ (++) HAL_I2C_Slave_Receive()
+ (++) HAL_I2C_Mem_Write()
+ (++) HAL_I2C_Mem_Read()
+ (++) HAL_I2C_IsDeviceReady()
+
+ (#) No-Blocking mode functions with Interrupt are :
+ (++) HAL_I2C_Master_Transmit_IT()
+ (++) HAL_I2C_Master_Receive_IT()
+ (++) HAL_I2C_Slave_Transmit_IT()
+ (++) HAL_I2C_Slave_Receive_IT()
+ (++) HAL_I2C_Mem_Write_IT()
+ (++) HAL_I2C_Mem_Read_IT()
+
+ (#) No-Blocking mode functions with DMA are :
+ (++) HAL_I2C_Master_Transmit_DMA()
+ (++) HAL_I2C_Master_Receive_DMA()
+ (++) HAL_I2C_Slave_Transmit_DMA()
+ (++) HAL_I2C_Slave_Receive_DMA()
+ (++) HAL_I2C_Mem_Write_DMA()
+ (++) HAL_I2C_Mem_Read_DMA()
+
+ (#) A set of Transfer Complete Callbacks are provided in non Blocking mode:
+ (++) HAL_I2C_MemTxCpltCallback()
+ (++) HAL_I2C_MemRxCpltCallback()
+ (++) HAL_I2C_MasterTxCpltCallback()
+ (++) HAL_I2C_MasterRxCpltCallback()
+ (++) HAL_I2C_SlaveTxCpltCallback()
+ (++) HAL_I2C_SlaveRxCpltCallback()
+ (++) HAL_I2C_ErrorCallback()
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Transmits in master mode an amount of data in blocking mode.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Send Slave Address */
+ if(I2C_MasterRequestWrite(hi2c, DevAddress, 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;
+ }
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ while(Size > 0)
+ {
+ /* Wait until TXE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Write data to DR */
+ hi2c->Instance->DR = (*pData++);
+ Size--;
+
+ if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0))
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = (*pData++);
+ Size--;
+ }
+ }
+
+ /* Wait until TXE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receives in master mode an amount of data in blocking mode.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @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)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Send Slave Address */
+ if(I2C_MasterRequestRead(hi2c, DevAddress, 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;
+ }
+ }
+
+ if(Size == 1)
+ {
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+ }
+ else if(Size == 2)
+ {
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Enable Pos */
+ hi2c->Instance->CR1 |= I2C_CR1_POS;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ hi2c->Instance->CR1 |= I2C_CR1_ACK;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+
+ while(Size > 0)
+ {
+ if(Size <= 3)
+ {
+ /* One byte */
+ if(Size == 1)
+ {
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+ }
+ /* Two bytes */
+ else if(Size == 2)
+ {
+ /* Wait until BTF flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+ }
+ /* 3 Last bytes */
+ else
+ {
+ /* Wait until BTF flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+
+ /* Wait until BTF flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+ }
+ }
+ else
+ {
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET)
+ {
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+ }
+ }
+ }
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmits in slave mode an amount of data in blocking mode.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR1 |= I2C_CR1_ACK;
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* If 10bit addressing mode is selected */
+ if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT)
+ {
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+
+ while(Size > 0)
+ {
+ /* Wait until TXE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Write data to DR */
+ hi2c->Instance->DR = (*pData++);
+ Size--;
+
+ if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0))
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = (*pData++);
+ Size--;
+ }
+ }
+
+ /* Wait until AF flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_AF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear AF flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in slave mode an amount of data in blocking mode
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Receive(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR1 |= I2C_CR1_ACK;
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ while(Size > 0)
+ {
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+
+ if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0))
+ {
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+ }
+ }
+
+ /* Wait until STOP flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear STOP flag */
+ __HAL_I2C_CLEAR_STOPFLAG(hi2c);
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in master mode an amount of data in no-blocking mode with Interrupt
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @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 == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = Size;
+
+ /* Send Slave Address */
+ if(I2C_MasterRequestWrite(hi2c, DevAddress, 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;
+ }
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in master mode an amount of data in no-blocking mode with Interrupt
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @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 == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = Size;
+
+ /* Send Slave Address */
+ if(I2C_MasterRequestRead(hi2c, DevAddress, 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;
+ }
+ }
+
+ if(hi2c->XferCount == 1)
+ {
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+ }
+ else if(hi2c->XferCount == 2)
+ {
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Enable Pos */
+ hi2c->Instance->CR1 |= I2C_CR1_POS;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ hi2c->Instance->CR1 |= I2C_CR1_ACK;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in slave mode an amount of data in no-blocking mode with Interrupt
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = Size;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR1 |= I2C_CR1_ACK;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in slave mode an amount of data in no-blocking mode with Interrupt
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = Size;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR1 |= I2C_CR1_ACK;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in master mode an amount of data in no-blocking mode with DMA
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @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 == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = 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 Stream */
+ HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->DR, Size);
+
+ /* Send Slave Address */
+ if(I2C_MasterRequestWrite(hi2c, DevAddress, I2C_TIMEOUT_FLAG) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_ERROR;
+ }
+ else
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in master mode an amount of data in no-blocking mode with DMA
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @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 == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->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_DMAMasterReceiveCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Enable the DMA Stream */
+ HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)pData, Size);
+
+ /* Send Slave Address */
+ if(I2C_MasterRequestRead(hi2c, DevAddress, I2C_TIMEOUT_FLAG) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_ERROR;
+ }
+ else
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_TIMEOUT;
+ }
+ }
+
+ if(Size == 1)
+ {
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+ }
+ else
+ {
+ /* Enable Last DMA bit */
+ hi2c->Instance->CR2 |= I2C_CR2_LAST;
+ }
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* 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 I2C module
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = 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 Stream */
+ HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->DR, Size);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR1 |= I2C_CR1_ACK;
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, I2C_TIMEOUT_ADDR_SLAVE) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* If 7bit addressing mode is selected */
+ if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT)
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+ else
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, I2C_TIMEOUT_ADDR_SLAVE) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+
+ /* 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 I2C module
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->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 Stream */
+ HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)pData, Size);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR1 |= I2C_CR1_ACK;
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, I2C_TIMEOUT_ADDR_SLAVE) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+/**
+ * @brief Write an amount of data in blocking mode to a specific memory address
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @param MemAddress: Internal memory address
+ * @param MemAddSize: Size of internal memory address
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ 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;
+ }
+ }
+
+ while(Size > 0)
+ {
+ /* Wait until TXE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Write data to DR */
+ hi2c->Instance->DR = (*pData++);
+ Size--;
+
+ if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0))
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = (*pData++);
+ Size--;
+ }
+ }
+
+ /* Wait until TXE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Read an amount of data in blocking mode from a specific memory address
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @param MemAddress: Internal memory address
+ * @param MemAddSize: Size of internal memory address
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ 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;
+ }
+ }
+
+ if(Size == 1)
+ {
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+ }
+ else if(Size == 2)
+ {
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Enable Pos */
+ hi2c->Instance->CR1 |= I2C_CR1_POS;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+ else
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+
+ while(Size > 0)
+ {
+ if(Size <= 3)
+ {
+ /* One byte */
+ if(Size== 1)
+ {
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+ }
+ /* Two bytes */
+ else if(Size == 2)
+ {
+ /* Wait until BTF flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+ }
+ /* 3 Last bytes */
+ else
+ {
+ /* Wait until BTF flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+
+ /* Wait until BTF flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+ }
+ }
+ else
+ {
+ /* Wait until RXNE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET)
+ {
+ /* Read data from DR */
+ (*pData++) = hi2c->Instance->DR;
+ Size--;
+ }
+ }
+ }
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+/**
+ * @brief Write an amount of data in no-blocking mode with Interrupt to a specific memory address
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @param MemAddress: Internal memory address
+ * @param MemAddSize: Size of internal memory address
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Write_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_MEM_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = 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;
+ }
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Read an amount of data in no-blocking mode with Interrupt from a specific memory address
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @param MemAddress: Internal memory address
+ * @param MemAddSize: Size of internal memory address
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_MEM_BUSY_RX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = 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;
+ }
+ }
+
+ if(hi2c->XferCount == 1)
+ {
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+ }
+ else if(hi2c->XferCount == 2)
+ {
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Enable Pos */
+ hi2c->Instance->CR1 |= I2C_CR1_POS;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+ else
+ {
+ /* Enable Acknowledge */
+ hi2c->Instance->CR1 |= I2C_CR1_ACK;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable EVT, BUF and ERR interrupt */
+ __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+/**
+ * @brief Write an amount of data in no-blocking mode with DMA to a specific memory address
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @param MemAddress: Internal memory address
+ * @param MemAddSize: Size of internal memory address
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Write_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_MEM_BUSY_TX;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ hi2c->pBuffPtr = pData;
+ hi2c->XferSize = Size;
+ hi2c->XferCount = 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 Stream */
+ HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->DR, Size);
+
+ /* Send Slave Address and Memory Address */
+ if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_ERROR;
+ }
+ else
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Reads an amount of data in no-blocking mode with DMA from a specific memory address.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @param MemAddress: Internal memory address
+ * @param MemAddSize: Size of internal memory address
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be read
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Read_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if((pData == NULL) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_MEM_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_DMAMemReceiveCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Enable the DMA Stream */
+ HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)pData, Size);
+
+ /* Send Slave Address and Memory Address */
+ if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_ERROR;
+ }
+ else
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_TIMEOUT;
+ }
+ }
+
+ if(Size == 1)
+ {
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+ }
+ else
+ {
+ /* Enable Last DMA bit */
+ hi2c->Instance->CR2 |= I2C_CR2_LAST;
+ }
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Checks if target device is ready for communication.
+ * @note This function is used with Memory devices
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @param Trials: Number of trials
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout)
+{
+ uint32_t tickstart = 0, tmp1 = 0, tmp2 = 0, tmp3 = 0, I2C_Trials = 1;
+
+ if(hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Pos */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ do
+ {
+ /* Generate Start */
+ hi2c->Instance->CR1 |= I2C_CR1_START;
+
+ /* Wait until SB flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
+
+ /* Wait until ADDR or AF flag are set */
+ /* Get tick */
+ tickstart = HAL_GetTick();
+
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR);
+ tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF);
+ tmp3 = hi2c->State;
+ while((tmp1 == RESET) && (tmp2 == RESET) && (tmp3 != HAL_I2C_STATE_TIMEOUT))
+ {
+ if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
+ {
+ hi2c->State = HAL_I2C_STATE_TIMEOUT;
+ }
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR);
+ tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF);
+ tmp3 = hi2c->State;
+ }
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Check if the ADDR flag has been set */
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == SET)
+ {
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Clear ADDR Flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Clear AF Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Wait until BUSY flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ }
+ }while(I2C_Trials++ < Trials);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief This function handles I2C event interrupt request.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+void HAL_I2C_EV_IRQHandler(I2C_HandleTypeDef *hi2c)
+{
+ uint32_t tmp1 = 0, tmp2 = 0, tmp3 = 0, tmp4 = 0;
+ /* Master mode selected */
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_MSL) == SET)
+ {
+ /* I2C in mode Transmitter -----------------------------------------------*/
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TRA) == SET)
+ {
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXE);
+ tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_BUF);
+ tmp3 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF);
+ tmp4 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_EVT);
+ /* TXE set and BTF reset -----------------------------------------------*/
+ if((tmp1 == SET) && (tmp2 == SET) && (tmp3 == RESET))
+ {
+ I2C_MasterTransmit_TXE(hi2c);
+ }
+ /* BTF set -------------------------------------------------------------*/
+ else if((tmp3 == SET) && (tmp4 == SET))
+ {
+ I2C_MasterTransmit_BTF(hi2c);
+ }
+ }
+ /* I2C in mode Receiver --------------------------------------------------*/
+ else
+ {
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE);
+ tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_BUF);
+ tmp3 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF);
+ tmp4 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_EVT);
+ /* RXNE set and BTF reset -----------------------------------------------*/
+ if((tmp1 == SET) && (tmp2 == SET) && (tmp3 == RESET))
+ {
+ I2C_MasterReceive_RXNE(hi2c);
+ }
+ /* BTF set -------------------------------------------------------------*/
+ else if((tmp3 == SET) && (tmp4 == SET))
+ {
+ I2C_MasterReceive_BTF(hi2c);
+ }
+ }
+ }
+ /* Slave mode selected */
+ else
+ {
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR);
+ tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, (I2C_IT_EVT));
+ tmp3 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF);
+ tmp4 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TRA);
+ /* ADDR set --------------------------------------------------------------*/
+ if((tmp1 == SET) && (tmp2 == SET))
+ {
+ I2C_Slave_ADDR(hi2c);
+ }
+ /* STOPF set --------------------------------------------------------------*/
+ else if((tmp3 == SET) && (tmp2 == SET))
+ {
+ I2C_Slave_STOPF(hi2c);
+ }
+ /* I2C in mode Transmitter -----------------------------------------------*/
+ else if(tmp4 == SET)
+ {
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXE);
+ tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_BUF);
+ tmp3 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF);
+ tmp4 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_EVT);
+ /* TXE set and BTF reset -----------------------------------------------*/
+ if((tmp1 == SET) && (tmp2 == SET) && (tmp3 == RESET))
+ {
+ I2C_SlaveTransmit_TXE(hi2c);
+ }
+ /* BTF set -------------------------------------------------------------*/
+ else if((tmp3 == SET) && (tmp4 == SET))
+ {
+ I2C_SlaveTransmit_BTF(hi2c);
+ }
+ }
+ /* I2C in mode Receiver --------------------------------------------------*/
+ else
+ {
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE);
+ tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_BUF);
+ tmp3 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF);
+ tmp4 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_EVT);
+ /* RXNE set and BTF reset ----------------------------------------------*/
+ if((tmp1 == SET) && (tmp2 == SET) && (tmp3 == RESET))
+ {
+ I2C_SlaveReceive_RXNE(hi2c);
+ }
+ /* BTF set -------------------------------------------------------------*/
+ else if((tmp3 == SET) && (tmp4 == SET))
+ {
+ I2C_SlaveReceive_BTF(hi2c);
+ }
+ }
+ }
+}
+
+/**
+ * @brief This function handles I2C error interrupt request.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c)
+{
+ uint32_t tmp1 = 0, tmp2 = 0, tmp3 = 0;
+
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BERR);
+ tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_ERR);
+ /* I2C Bus error interrupt occurred ----------------------------------------*/
+ if((tmp1 == SET) && (tmp2 == SET))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_BERR;
+
+ /* Clear BERR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_BERR);
+ }
+
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ARLO);
+ tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_ERR);
+ /* I2C Arbitration Loss error interrupt occurred ---------------------------*/
+ if((tmp1 == SET) && (tmp2 == SET))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_ARLO;
+
+ /* Clear ARLO flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ARLO);
+ }
+
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF);
+ tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_ERR);
+ /* I2C Acknowledge failure error interrupt occurred ------------------------*/
+ if((tmp1 == SET) && (tmp2 == SET))
+ {
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_MSL);
+ tmp2 = hi2c->XferCount;
+ tmp3 = hi2c->State;
+ if((tmp1 == RESET) && (tmp2 == 0) && (tmp3 == HAL_I2C_STATE_BUSY_TX))
+ {
+ I2C_Slave_AF(hi2c);
+ }
+ else
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ /* Clear AF flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+ }
+ }
+
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_OVR);
+ tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_ERR);
+ /* I2C Over-Run/Under-Run interrupt occurred -------------------------------*/
+ if((tmp1 == SET) && (tmp2 == SET))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_OVR;
+ /* Clear OVR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_OVR);
+ }
+
+ if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Disable Pos bit in I2C CR1 when error occurred in Master/Mem Receive IT Process */
+ hi2c->Instance->CR1 &= ~I2C_CR1_POS;
+
+ HAL_I2C_ErrorCallback(hi2c);
+ }
+}
+
+/**
+ * @brief Master Tx Transfer completed callbacks.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval None
+ */
+ __weak void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* 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 I2C module
+ * @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 I2C module
+ * @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 I2C module
+ * @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 I2C module
+ * @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 I2C module
+ * @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 I2C module
+ * @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 permits to get in run-time the status of the peripheral
+ and the data flow.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Returns the I2C state.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL state
+ */
+HAL_I2C_StateTypeDef HAL_I2C_GetState(I2C_HandleTypeDef *hi2c)
+{
+ return hi2c->State;
+}
+
+/**
+ * @brief Return the I2C error code
+ * @param hi2c : pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+* @retval I2C Error Code
+*/
+uint32_t HAL_I2C_GetError(I2C_HandleTypeDef *hi2c)
+{
+ return hi2c->ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @brief Handle TXE flag for Master
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c)
+{
+ /* Write data to DR */
+ hi2c->Instance->DR = (*hi2c->pBuffPtr++);
+ hi2c->XferCount--;
+
+ if(hi2c->XferCount == 0)
+ {
+ /* Disable BUF interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle BTF flag for Master transmitter
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_MasterTransmit_BTF(I2C_HandleTypeDef *hi2c)
+{
+ if(hi2c->XferCount != 0)
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = (*hi2c->pBuffPtr++);
+ hi2c->XferCount--;
+ }
+ else
+ {
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ if(hi2c->State == HAL_I2C_STATE_MEM_BUSY_TX)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ HAL_I2C_MemTxCpltCallback(hi2c);
+ }
+ else
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ HAL_I2C_MasterTxCpltCallback(hi2c);
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle RXNE flag for Master
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c)
+{
+ uint32_t tmp = 0;
+
+ tmp = hi2c->XferCount;
+ if(tmp > 3)
+ {
+ /* Read data from DR */
+ (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
+ hi2c->XferCount--;
+ }
+ else if((tmp == 2) || (tmp == 3))
+ {
+ /* Disable BUF interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
+ }
+ else
+ {
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Read data from DR */
+ (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
+ hi2c->XferCount--;
+
+ if(hi2c->State == HAL_I2C_STATE_MEM_BUSY_RX)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ HAL_I2C_MemRxCpltCallback(hi2c);
+ }
+ else
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ HAL_I2C_MasterRxCpltCallback(hi2c);
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle BTF flag for Master receiver
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_MasterReceive_BTF(I2C_HandleTypeDef *hi2c)
+{
+ if(hi2c->XferCount == 3)
+ {
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Read data from DR */
+ (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
+ hi2c->XferCount--;
+ }
+ else if(hi2c->XferCount == 2)
+ {
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Read data from DR */
+ (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
+ hi2c->XferCount--;
+
+ /* Read data from DR */
+ (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
+ hi2c->XferCount--;
+
+ /* Disable EVT and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
+
+ if(hi2c->State == HAL_I2C_STATE_MEM_BUSY_RX)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ HAL_I2C_MemRxCpltCallback(hi2c);
+ }
+ else
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ HAL_I2C_MasterRxCpltCallback(hi2c);
+ }
+ }
+ else
+ {
+ /* Read data from DR */
+ (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
+ hi2c->XferCount--;
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle TXE flag for Slave
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c)
+{
+ if(hi2c->XferCount != 0)
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = (*hi2c->pBuffPtr++);
+ hi2c->XferCount--;
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle BTF flag for Slave transmitter
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c)
+{
+ if(hi2c->XferCount != 0)
+ {
+ /* Write data to DR */
+ hi2c->Instance->DR = (*hi2c->pBuffPtr++);
+ hi2c->XferCount--;
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle RXNE flag for Slave
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c)
+{
+ if(hi2c->XferCount != 0)
+ {
+ /* Read data from DR */
+ (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
+ hi2c->XferCount--;
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle BTF flag for Slave receiver
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c)
+{
+ if(hi2c->XferCount != 0)
+ {
+ /* Read data from DR */
+ (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
+ hi2c->XferCount--;
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle ADD flag for Slave
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c)
+{
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle STOPF flag for Slave
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c)
+{
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Clear STOPF flag */
+ __HAL_I2C_CLEAR_STOPFLAG(hi2c);
+
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ HAL_I2C_SlaveRxCpltCallback(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_Slave_AF(I2C_HandleTypeDef *hi2c)
+{
+ /* Disable EVT, BUF and ERR interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
+
+ /* Clear AF flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ HAL_I2C_SlaveTxCpltCallback(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_MasterRequestWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout)
+{
+ /* Generate Start */
+ hi2c->Instance->CR1 |= I2C_CR1_START;
+
+ /* Wait until SB flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT)
+ {
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
+ }
+ else
+ {
+ /* Send header of slave address */
+ hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(DevAddress);
+
+ /* Wait until ADD10 flag is set */
+ if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADD10, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_10BIT_ADDRESS(DevAddress);
+ }
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Master sends target device address for read request.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_MasterRequestRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout)
+{
+ /* Enable Acknowledge */
+ hi2c->Instance->CR1 |= I2C_CR1_ACK;
+
+ /* Generate Start */
+ hi2c->Instance->CR1 |= I2C_CR1_START;
+
+ /* Wait until SB flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT)
+ {
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_READ(DevAddress);
+ }
+ else
+ {
+ /* Send header of slave address */
+ hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(DevAddress);
+
+ /* Wait until ADD10 flag is set */
+ if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADD10, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_10BIT_ADDRESS(DevAddress);
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Generate Restart */
+ hi2c->Instance->CR1 |= I2C_CR1_START;
+
+ /* Wait until SB flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Send header of slave address */
+ hi2c->Instance->DR = I2C_10BIT_HEADER_READ(DevAddress);
+ }
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Master sends target device address followed by internal memory address for write request.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @param MemAddress: Internal memory address
+ * @param MemAddSize: Size of internal memory address
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout)
+{
+ /* Generate Start */
+ hi2c->Instance->CR1 |= I2C_CR1_START;
+
+ /* Wait until SB flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Wait until TXE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* If Memory address size is 8Bit */
+ if(MemAddSize == I2C_MEMADD_SIZE_8BIT)
+ {
+ /* Send Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+ /* If Memory address size is 16Bit */
+ else
+ {
+ /* Send MSB of Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_MSB(MemAddress);
+
+ /* Wait until TXE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Send LSB of Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Master sends target device address followed by internal memory address for read request.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param DevAddress: Target device address
+ * @param MemAddress: Internal memory address
+ * @param MemAddSize: Size of internal memory address
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout)
+{
+ /* Enable Acknowledge */
+ hi2c->Instance->CR1 |= I2C_CR1_ACK;
+
+ /* Generate Start */
+ hi2c->Instance->CR1 |= I2C_CR1_START;
+
+ /* Wait until SB flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
+
+ /* Wait until TXE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* If Memory address size is 8Bit */
+ if(MemAddSize == I2C_MEMADD_SIZE_8BIT)
+ {
+ /* Send Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+ /* If Memory address size is 16Bit */
+ else
+ {
+ /* Send MSB of Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_MSB(MemAddress);
+
+ /* Wait until TXE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Send LSB of Memory Address */
+ hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+
+ /* Wait until TXE flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Generate Restart */
+ hi2c->Instance->CR1 |= I2C_CR1_START;
+
+ /* Wait until SB flag is set */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Send slave address */
+ hi2c->Instance->DR = I2C_7BIT_ADD_READ(DevAddress);
+
+ /* Wait until ADDR flag is set */
+ if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
+ {
+ if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ return HAL_ERROR;
+ }
+ else
+ {
+ 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)
+{
+ I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ /* Wait until BTF flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, I2C_TIMEOUT_FLAG) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
+
+ 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 AF flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_AF, RESET, I2C_TIMEOUT_FLAG) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Clear AF flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
+
+ 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;
+
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Disable Last DMA */
+ hi2c->Instance->CR2 &= ~I2C_CR2_LAST;
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
+
+ hi2c->XferCount = 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_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, I2C_TIMEOUT_FLAG) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Clear STOPF flag */
+ __HAL_I2C_CLEAR_STOPFLAG(hi2c);
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
+
+ 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)
+{
+ I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ /* Wait until BTF flag is reset */
+ if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, I2C_TIMEOUT_FLAG) != HAL_OK)
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ }
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
+
+ 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;
+
+ /* Disable Acknowledge */
+ hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
+
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Disable Last DMA */
+ hi2c->Instance->CR2 &= ~I2C_CR2_LAST;
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
+
+ hi2c->XferCount = 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->CR1 &= ~I2C_CR1_ACK;
+
+ 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 I2C module
+ * @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 = 0;
+
+ /* Get tick */
+ 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 Master addressing phase.
+ * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @param Flag: specifies the I2C flag to check.
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnMasterAddressFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, uint32_t Timeout)
+{
+ uint32_t tickstart = 0;
+
+ /* Get tick */
+ tickstart = HAL_GetTick();
+
+ while(__HAL_I2C_GET_FLAG(hi2c, Flag) == RESET)
+ {
+ if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET)
+ {
+ /* Generate Stop */
+ hi2c->Instance->CR1 |= I2C_CR1_STOP;
+
+ /* Clear AF Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ hi2c->ErrorCode = HAL_I2C_ERROR_AF;
+ hi2c->State= HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ /* 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;
+}
+
+/**
+ * @}
+ */
+
+#endif /* HAL_I2C_MODULE_ENABLED */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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