mbed official
mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
Diff: targets/TARGET_STM/TARGET_STM32F2/device/stm32f2xx_hal_usart.c
- Revision:
- 149:156823d33999
- Parent:
- 144:ef7eb2e8f9f7
- Child:
- 167:e84263d55307
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_STM/TARGET_STM32F2/device/stm32f2xx_hal_usart.c Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,2022 @@
+/**
+ ******************************************************************************
+ * @file stm32f2xx_hal_usart.c
+ * @author MCD Application Team
+ * @version V1.1.3
+ * @date 29-June-2016
+ * @brief USART HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the Universal Synchronous Asynchronous Receiver Transmitter (USART) peripheral:
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral Control functions
+ @verbatim
+ ==============================================================================
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+ The USART HAL driver can be used as follows:
+
+ (#) Declare a USART_HandleTypeDef handle structure.
+ (#) Initialize the USART low level resources by implementing the HAL_USART_MspInit () API:
+ (##) Enable the USARTx interface clock.
+ (##) USART pins configuration:
+ (+++) Enable the clock for the USART GPIOs.
+ (+++) Configure these USART pins as alternate function pull-up.
+ (##) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(),
+ HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs):
+ (+++) Configure the USARTx interrupt priority.
+ (+++) Enable the NVIC USART IRQ handle.
+ (##) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA()
+ HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs):
+ (+++) Declare a DMA handle structure for the Tx/Rx stream.
+ (+++) Enable the DMAx interface clock.
+ (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
+ (+++) Configure the DMA Tx/Rx Stream.
+ (+++) Associate the initialized DMA handle to the USART DMA Tx/Rx handle.
+ (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx Stream.
+
+ (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware
+ flow control and Mode(Receiver/Transmitter) in the husart Init structure.
+
+ (#) Initialize the USART registers by calling the HAL_USART_Init() API:
+ (++) These APIs configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)
+ by calling the customized HAL_USART_MspInit(&husart) API.
+
+ -@@- The specific USART interrupts (Transmission complete interrupt,
+ RXNE interrupt and Error Interrupts) will be managed using the macros
+ __HAL_USART_ENABLE_IT() and __HAL_USART_DISABLE_IT() inside the transmit and receive process.
+
+ (#) Three operation modes are available within this driver :
+
+ *** Polling mode IO operation ***
+ =================================
+ [..]
+ (+) Send an amount of data in blocking mode using HAL_USART_Transmit()
+ (+) Receive an amount of data in blocking mode using HAL_USART_Receive()
+
+ *** Interrupt mode IO operation ***
+ ===================================
+ [..]
+ (+) Send an amount of data in non blocking mode using HAL_USART_Transmit_IT()
+ (+) At transmission end of transfer HAL_USART_TxHalfCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_USART_TxCpltCallback
+ (+) Receive an amount of data in non blocking mode using HAL_USART_Receive_IT()
+ (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_USART_RxCpltCallback
+ (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer HAL_USART_ErrorCallback
+
+ *** DMA mode IO operation ***
+ ==============================
+ [..]
+ (+) Send an amount of data in non blocking mode (DMA) using HAL_USART_Transmit_DMA()
+ (+) At transmission end of half transfer HAL_USART_TxHalfCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_USART_TxHalfCpltCallback
+ (+) At transmission end of transfer HAL_USART_TxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_USART_TxCpltCallback
+ (+) Receive an amount of data in non blocking mode (DMA) using HAL_USART_Receive_DMA()
+ (+) At reception end of half transfer HAL_USART_RxHalfCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_USART_RxHalfCpltCallback
+ (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_USART_RxCpltCallback
+ (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer HAL_USART_ErrorCallback
+ (+) Pause the DMA Transfer using HAL_USART_DMAPause()
+ (+) Resume the DMA Transfer using HAL_USART_DMAResume()
+ (+) Stop the DMA Transfer using HAL_USART_DMAStop()
+
+ *** USART HAL driver macros list ***
+ =============================================
+ [..]
+ Below the list of most used macros in USART HAL driver.
+
+ (+) __HAL_USART_ENABLE: Enable the USART peripheral
+ (+) __HAL_USART_DISABLE: Disable the USART peripheral
+ (+) __HAL_USART_GET_FLAG : Check whether the specified USART flag is set or not
+ (+) __HAL_USART_CLEAR_FLAG : Clear the specified USART pending flag
+ (+) __HAL_USART_ENABLE_IT: Enable the specified USART interrupt
+ (+) __HAL_USART_DISABLE_IT: Disable the specified USART interrupt
+
+ [..]
+ (@) You can refer to the USART HAL driver header file for more useful macros
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f2xx_hal.h"
+
+/** @addtogroup STM32F2xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup USART USART
+ * @brief HAL USART Synchronous module driver
+ * @{
+ */
+#ifdef HAL_USART_MODULE_ENABLED
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @addtogroup USART_Private_Constants
+ * @{
+ */
+#define DUMMY_DATA 0xFFFFU
+#define USART_TIMEOUT_VALUE 22000U
+/**
+ * @}
+ */
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/** @addtogroup USART_Private_Functions
+ * @{
+ */
+static void USART_EndTxTransfer(USART_HandleTypeDef *husart);
+static void USART_EndRxTransfer(USART_HandleTypeDef *husart);
+static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart);
+static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart);
+static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart);
+static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart);
+static void USART_SetConfig (USART_HandleTypeDef *husart);
+static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
+static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
+static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
+static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
+static void USART_DMAError(DMA_HandleTypeDef *hdma);
+static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma);
+
+static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout);
+/**
+ * @}
+ */
+
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup USART_Exported_Functions USART Exported Functions
+ * @{
+ */
+
+/** @defgroup USART_Exported_Functions_Group1 USART Initialization and de-initialization functions
+ * @brief Initialization and Configuration functions
+ *
+@verbatim
+ ==============================================================================
+ ##### Initialization and Configuration functions #####
+ ==============================================================================
+ [..]
+ This subsection provides a set of functions allowing to initialize the USART
+ in asynchronous and in synchronous modes.
+ (+) For the asynchronous mode only these parameters can be configured:
+ (++) Baud Rate
+ (++) Word Length
+ (++) Stop Bit
+ (++) Parity: If the parity is enabled, then the MSB bit of the data written
+ in the data register is transmitted but is changed by the parity bit.
+ Depending on the frame length defined by the M bit (8-bits or 9-bits),
+ please refer to Reference manual for possible USART frame formats.
+ (++) USART polarity
+ (++) USART phase
+ (++) USART LastBit
+ (++) Receiver/transmitter modes
+
+ [..]
+ The HAL_USART_Init() function follows the USART synchronous configuration
+ procedure (details for the procedure are available in reference manual (RM0329)).
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the USART mode according to the specified
+ * parameters in the USART_InitTypeDef and create the associated handle.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart)
+{
+ /* Check the USART handle allocation */
+ if(husart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_USART_INSTANCE(husart->Instance));
+
+ if(husart->State == HAL_USART_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ husart->Lock = HAL_UNLOCKED;
+ /* Init the low level hardware */
+ HAL_USART_MspInit(husart);
+ }
+
+ husart->State = HAL_USART_STATE_BUSY;
+
+ /* Set the USART Communication parameters */
+ USART_SetConfig(husart);
+
+ /* In USART mode, the following bits must be kept cleared:
+ - LINEN bit in the USART_CR2 register
+ - HDSEL, SCEN and IREN bits in the USART_CR3 register */
+ CLEAR_BIT(husart->Instance->CR2, USART_CR2_LINEN);
+ CLEAR_BIT(husart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
+
+ /* Enable the Peripheral */
+ __HAL_USART_ENABLE(husart);
+
+ /* Initialize the USART state */
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ husart->State= HAL_USART_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DeInitializes the USART peripheral.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart)
+{
+ /* Check the USART handle allocation */
+ if(husart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_USART_INSTANCE(husart->Instance));
+
+ husart->State = HAL_USART_STATE_BUSY;
+
+ /* Disable the Peripheral */
+ __HAL_USART_DISABLE(husart);
+
+ /* DeInit the low level hardware */
+ HAL_USART_MspDeInit(husart);
+
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ husart->State = HAL_USART_STATE_RESET;
+
+ /* Release Lock */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief USART MSP Init.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval None
+ */
+__weak void HAL_USART_MspInit(USART_HandleTypeDef *husart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(husart);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_USART_MspInit could be implemented in the user file
+ */
+}
+
+/**
+ * @brief USART MSP DeInit.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval None
+ */
+__weak void HAL_USART_MspDeInit(USART_HandleTypeDef *husart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(husart);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_USART_MspDeInit could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup USART_Exported_Functions_Group2 IO operation functions
+ * @brief USART Transmit and Receive functions
+ *
+@verbatim
+ ==============================================================================
+ ##### IO operation functions #####
+ ==============================================================================
+ [..]
+ This subsection provides a set of functions allowing to manage the USART synchronous
+ data transfers.
+
+ [..]
+ The USART supports master mode only: it cannot receive or send data related to an input
+ clock (SCLK is always an output).
+
+ (#) There are two modes of transfer:
+ (++) Blocking mode: The communication is performed in polling mode.
+ The HAL 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 API's return the HAL status.
+ The end of the data processing will be indicated through the
+ dedicated USART IRQ when using Interrupt mode or the DMA IRQ when
+ using DMA mode.
+ The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback()
+ user callbacks
+ will be executed respectively at the end of the transmit or Receive process
+ The HAL_USART_ErrorCallback() user callback will be executed when a communication
+ error is detected
+
+ (#) Blocking mode APIs are :
+ (++) HAL_USART_Transmit() in simplex mode
+ (++) HAL_USART_Receive() in full duplex receive only
+ (++) HAL_USART_TransmitReceive() in full duplex mode
+
+ (#) Non Blocking mode APIs with Interrupt are :
+ (++) HAL_USART_Transmit_IT()in simplex mode
+ (++) HAL_USART_Receive_IT() in full duplex receive only
+ (++) HAL_USART_TransmitReceive_IT() in full duplex mode
+ (++) HAL_USART_IRQHandler()
+
+ (#) Non Blocking mode functions with DMA are :
+ (++) HAL_USART_Transmit_DMA()in simplex mode
+ (++) HAL_USART_Receive_DMA() in full duplex receive only
+ (++) HAL_USART_TransmitReceie_DMA() in full duplex mode
+ (++) HAL_USART_DMAPause()
+ (++) HAL_USART_DMAResume()
+ (++) HAL_USART_DMAStop()
+
+ (#) A set of Transfer Complete Callbacks are provided in non Blocking mode:
+ (++) HAL_USART_TxHalfCpltCallback()
+ (++) HAL_USART_TxCpltCallback()
+ (++) HAL_USART_RxHalfCpltCallback()
+ (++) HAL_USART_RxCpltCallback()
+ (++) HAL_USART_ErrorCallback()
+ (++) HAL_USART_TxRxCpltCallback()
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Simplex Send an amount of data in blocking mode.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @param pTxData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout)
+{
+ uint16_t* tmp;
+ uint32_t tickstart = 0U;
+
+ if(husart->State == HAL_USART_STATE_READY)
+ {
+ if((pTxData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ husart->State = HAL_USART_STATE_BUSY_TX;
+
+ /* Init tickstart for timeout managment */
+ tickstart = HAL_GetTick();
+
+ husart->TxXferSize = Size;
+ husart->TxXferCount = Size;
+ while(husart->TxXferCount > 0U)
+ {
+ husart->TxXferCount--;
+ if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+ {
+ /* Wait for TC flag in order to write data in DR */
+ if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ tmp = (uint16_t*) pTxData;
+ husart->Instance->DR = (*tmp & (uint16_t)0x01FFU);
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ pTxData += 2U;
+ }
+ else
+ {
+ pTxData += 1U;
+ }
+ }
+ else
+ {
+ if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ husart->Instance->DR = (*pTxData++ & (uint8_t)0xFFU);
+ }
+ }
+
+ if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ husart->State = HAL_USART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Full-Duplex Receive an amount of data in blocking mode.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @param pRxData: Pointer to data buffer
+ * @param Size: Amount of data to be received
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
+{
+ uint16_t* tmp;
+ uint32_t tickstart = 0U;
+
+ if(husart->State == HAL_USART_STATE_READY)
+ {
+ if((pRxData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ husart->State = HAL_USART_STATE_BUSY_RX;
+
+ /* Init tickstart for timeout managment */
+ tickstart = HAL_GetTick();
+
+ husart->RxXferSize = Size;
+ husart->RxXferCount = Size;
+ /* Check the remain data to be received */
+ while(husart->RxXferCount > 0U)
+ {
+ husart->RxXferCount--;
+ if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+ {
+ /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */
+ if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ /* Send dummy byte in order to generate clock */
+ husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FFU);
+
+ /* Wait for RXNE Flag */
+ if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ tmp = (uint16_t*) pRxData ;
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FFU);
+ pRxData +=2;
+ }
+ else
+ {
+ *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FFU);
+ pRxData +=1;
+ }
+ }
+ else
+ {
+ /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */
+ if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Send Dummy Byte in order to generate clock */
+ husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x00FFU);
+
+ /* Wait until RXNE flag is set to receive the byte */
+ if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ /* Receive data */
+ *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FFU);
+ }
+ else
+ {
+ /* Receive data */
+ *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007FU);
+ }
+
+ }
+ }
+
+ husart->State = HAL_USART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Full-Duplex Send receive an amount of data in full-duplex mode (blocking mode).
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @param pTxData: Pointer to data transmitted buffer
+ * @param pRxData: Pointer to data received buffer
+ * @param Size: Amount of data to be sent
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
+{
+ uint16_t* tmp;
+ uint32_t tickstart = 0U;
+
+ if(husart->State == HAL_USART_STATE_READY)
+ {
+ if((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ husart->State = HAL_USART_STATE_BUSY_RX;
+
+ /* Init tickstart for timeout managment */
+ tickstart = HAL_GetTick();
+
+ husart->RxXferSize = Size;
+ husart->TxXferSize = Size;
+ husart->TxXferCount = Size;
+ husart->RxXferCount = Size;
+
+ /* Check the remain data to be received */
+ while(husart->TxXferCount > 0U)
+ {
+ husart->TxXferCount--;
+ husart->RxXferCount--;
+ if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+ {
+ /* Wait for TC flag in order to write data in DR */
+ if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ tmp = (uint16_t*) pTxData;
+ husart->Instance->DR = (*tmp & (uint16_t)0x01FFU);
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ pTxData += 2U;
+ }
+ else
+ {
+ pTxData += 1U;
+ }
+
+ /* Wait for RXNE Flag */
+ if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ tmp = (uint16_t*) pRxData ;
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FFU);
+ pRxData += 2U;
+ }
+ else
+ {
+ *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FFU);
+ pRxData += 1U;
+ }
+ }
+ else
+ {
+ /* Wait for TC flag in order to write data in DR */
+ if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ husart->Instance->DR = (*pTxData++ & (uint8_t)0x00FFU);
+
+ /* Wait for RXNE Flag */
+ if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ /* Receive data */
+ *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FFU);
+ }
+ else
+ {
+ /* Receive data */
+ *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007FU);
+ }
+ }
+ }
+
+ husart->State = HAL_USART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Simplex Send an amount of data in non-blocking mode.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @param pTxData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ * @note The USART errors are not managed to avoid the overrun error.
+ */
+HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size)
+{
+ if(husart->State == HAL_USART_STATE_READY)
+ {
+ if((pTxData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->pTxBuffPtr = pTxData;
+ husart->TxXferSize = Size;
+ husart->TxXferCount = Size;
+
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ husart->State = HAL_USART_STATE_BUSY_TX;
+
+ /* The USART Error Interrupts: (Frame error, Noise error, Overrun error)
+ are not managed by the USART transmit process to avoid the overrun interrupt
+ when the USART mode is configured for transmit and receive "USART_MODE_TX_RX"
+ to benefit for the frame error and noise interrupts the USART mode should be
+ configured only for transmit "USART_MODE_TX"
+ The __HAL_USART_ENABLE_IT(husart, USART_IT_ERR) can be used to enable the Frame error,
+ Noise error interrupt */
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ /* Enable the USART Transmit Data Register Empty Interrupt */
+ SET_BIT(husart->Instance->CR1, USART_CR1_TXEIE);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Simplex Receive an amount of data in non-blocking mode.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @param pRxData: Pointer to data buffer
+ * @param Size: Amount of data to be received
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)
+{
+ if(husart->State == HAL_USART_STATE_READY)
+ {
+ if((pRxData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->pRxBuffPtr = pRxData;
+ husart->RxXferSize = Size;
+ husart->RxXferCount = Size;
+
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ husart->State = HAL_USART_STATE_BUSY_RX;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ /* Enable the USART Parity Error and Data Register not empty Interrupts */
+ SET_BIT(husart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE);
+
+ /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
+ SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
+
+ /* Send dummy byte in order to generate the clock for the slave to send data */
+ husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FFU);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking).
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @param pTxData: Pointer to data transmitted buffer
+ * @param pRxData: Pointer to data received buffer
+ * @param Size: Amount of data to be received
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size)
+{
+ if(husart->State == HAL_USART_STATE_READY)
+ {
+ if((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->pRxBuffPtr = pRxData;
+ husart->RxXferSize = Size;
+ husart->RxXferCount = Size;
+ husart->pTxBuffPtr = pTxData;
+ husart->TxXferSize = Size;
+ husart->TxXferCount = Size;
+
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ husart->State = HAL_USART_STATE_BUSY_TX_RX;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ /* Enable the USART Data Register not empty Interrupt */
+ SET_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);
+
+ /* Enable the USART Parity Error Interrupt */
+ SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
+
+ /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
+ SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
+
+ /* Enable the USART Transmit Data Register Empty Interrupt */
+ SET_BIT(husart->Instance->CR1, USART_CR1_TXEIE);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Simplex Send an amount of data in non-blocking mode.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @param pTxData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size)
+{
+ uint32_t *tmp;
+
+ if(husart->State == HAL_USART_STATE_READY)
+ {
+ if((pTxData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->pTxBuffPtr = pTxData;
+ husart->TxXferSize = Size;
+ husart->TxXferCount = Size;
+
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ husart->State = HAL_USART_STATE_BUSY_TX;
+
+ /* Set the USART DMA transfer complete callback */
+ husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;
+
+ /* Set the USART DMA Half transfer complete callback */
+ husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;
+
+ /* Set the DMA error callback */
+ husart->hdmatx->XferErrorCallback = USART_DMAError;
+
+ /* Set the DMA abort callback */
+ husart->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the USART transmit DMA Stream */
+ tmp = (uint32_t*)&pTxData;
+ HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);
+
+ /* Clear the TC flag in the SR register by writing 0 to it */
+ __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ /* Enable the DMA transfer for transmit request by setting the DMAT bit
+ in the USART CR3 register */
+ SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Full-Duplex Receive an amount of data in non-blocking mode.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @param pRxData: Pointer to data buffer
+ * @param Size: Amount of data to be received
+ * @retval HAL status
+ * @note The USART DMA transmit stream must be configured in order to generate the clock for the slave.
+ * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit.
+ */
+HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)
+{
+ uint32_t *tmp;
+
+ if(husart->State == HAL_USART_STATE_READY)
+ {
+ if((pRxData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->pRxBuffPtr = pRxData;
+ husart->RxXferSize = Size;
+ husart->pTxBuffPtr = pRxData;
+ husart->TxXferSize = Size;
+
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ husart->State = HAL_USART_STATE_BUSY_RX;
+
+ /* Set the USART DMA Rx transfer complete callback */
+ husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;
+
+ /* Set the USART DMA Half transfer complete callback */
+ husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;
+
+ /* Set the USART DMA Rx transfer error callback */
+ husart->hdmarx->XferErrorCallback = USART_DMAError;
+
+ /* Set the DMA abort callback */
+ husart->hdmarx->XferAbortCallback = NULL;
+
+ /* Set the USART Tx DMA transfer complete callback as NULL because the communication closing
+ is performed in DMA reception complete callback */
+ husart->hdmatx->XferHalfCpltCallback = NULL;
+ husart->hdmatx->XferCpltCallback = NULL;
+
+ /* Set the DMA error callback */
+ husart->hdmatx->XferErrorCallback = USART_DMAError;
+
+ /* Set the DMA AbortCpltCallback */
+ husart->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the USART receive DMA Stream */
+ tmp = (uint32_t*)&pRxData;
+ HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size);
+
+ /* Enable the USART transmit DMA Stream: the transmit stream is used in order
+ to generate in the non-blocking mode the clock to the slave device,
+ this mode isn't a simplex receive mode but a full-duplex receive one */
+ HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);
+
+ /* Clear the Overrun flag just before enabling the DMA Rx request: mandatory for the second transfer
+ when using the USART in circular mode */
+ __HAL_USART_CLEAR_OREFLAG(husart);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ /* Enable the USART Parity Error Interrupt */
+ SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
+
+ /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
+ SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
+
+ /* Enable the DMA transfer for the receiver request by setting the DMAR bit
+ in the USART CR3 register */
+ SET_BIT(husart->Instance->CR3, USART_CR3_DMAR);
+
+ /* Enable the DMA transfer for transmit request by setting the DMAT bit
+ in the USART CR3 register */
+ SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Full-Duplex Transmit Receive an amount of data in non-blocking mode.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @param pTxData: Pointer to data transmitted buffer
+ * @param pRxData: Pointer to data received buffer
+ * @param Size: Amount of data to be received
+ * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size)
+{
+ uint32_t *tmp;
+
+ if(husart->State == HAL_USART_STATE_READY)
+ {
+ if((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
+ {
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->pRxBuffPtr = pRxData;
+ husart->RxXferSize = Size;
+ husart->pTxBuffPtr = pTxData;
+ husart->TxXferSize = Size;
+
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ husart->State = HAL_USART_STATE_BUSY_TX_RX;
+
+ /* Set the USART DMA Rx transfer complete callback */
+ husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;
+
+ /* Set the USART DMA Half transfer complete callback */
+ husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;
+
+ /* Set the USART DMA Tx transfer complete callback */
+ husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;
+
+ /* Set the USART DMA Half transfer complete callback */
+ husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;
+
+ /* Set the USART DMA Tx transfer error callback */
+ husart->hdmatx->XferErrorCallback = USART_DMAError;
+
+ /* Set the USART DMA Rx transfer error callback */
+ husart->hdmarx->XferErrorCallback = USART_DMAError;
+
+ /* Set the DMA abort callback */
+ husart->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the USART receive DMA Stream */
+ tmp = (uint32_t*)&pRxData;
+ HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size);
+
+ /* Enable the USART transmit DMA Stream */
+ tmp = (uint32_t*)&pTxData;
+ HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);
+
+ /* Clear the TC flag in the SR register by writing 0 to it */
+ __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC);
+
+ /* Clear the Overrun flag: mandatory for the second transfer in circular mode */
+ __HAL_USART_CLEAR_OREFLAG(husart);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ /* Enable the USART Parity Error Interrupt */
+ SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
+
+ /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
+ SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
+
+ /* Enable the DMA transfer for the receiver request by setting the DMAR bit
+ in the USART CR3 register */
+ SET_BIT(husart->Instance->CR3, USART_CR3_DMAR);
+
+ /* Enable the DMA transfer for transmit request by setting the DMAT bit
+ in the USART CR3 register */
+ SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Pauses the DMA Transfer.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart)
+{
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ /* Disable the USART DMA Tx request */
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Resumes the DMA Transfer.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart)
+{
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ /* Enable the USART DMA Tx request */
+ SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Stops the DMA Transfer.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart)
+{
+ uint32_t dmarequest = 0x00U;
+ /* The Lock is not implemented on this API to allow the user application
+ to call the HAL USART API under callbacks HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback():
+ when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated
+ and the correspond call back is executed HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback()
+ */
+
+ /* Stop USART DMA Tx request if ongoing */
+ dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT);
+ if((husart->State == HAL_USART_STATE_BUSY_TX) && dmarequest)
+ {
+ USART_EndTxTransfer(husart);
+
+ /* Abort the USART DMA Tx channel */
+ if(husart->hdmatx != NULL)
+ {
+ HAL_DMA_Abort(husart->hdmatx);
+ }
+
+ /* Disable the USART Tx DMA request */
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
+ }
+
+ /* Stop USART DMA Rx request if ongoing */
+ dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR);
+ if((husart->State == HAL_USART_STATE_BUSY_RX) && dmarequest)
+ {
+ USART_EndRxTransfer(husart);
+
+ /* Abort the USART DMA Rx channel */
+ if(husart->hdmarx != NULL)
+ {
+ HAL_DMA_Abort(husart->hdmarx);
+ }
+
+ /* Disable the USART Rx DMA request */
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles USART interrupt request.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval None
+ */
+void HAL_USART_IRQHandler(USART_HandleTypeDef *husart)
+{
+ uint32_t isrflags = READ_REG(husart->Instance->SR);
+ uint32_t cr1its = READ_REG(husart->Instance->CR1);
+ uint32_t cr3its = READ_REG(husart->Instance->CR3);
+ uint32_t errorflags = 0x00U;
+ uint32_t dmarequest = 0x00U;
+
+ /* If no error occurs */
+ errorflags = (isrflags & (uint32_t)(USART_SR_PE | USART_SR_FE | USART_SR_ORE | USART_SR_NE));
+ if(errorflags == RESET)
+ {
+ /* USART in mode Receiver -------------------------------------------------*/
+ if(((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
+ {
+ if(husart->State == HAL_USART_STATE_BUSY_RX)
+ {
+ USART_Receive_IT(husart);
+ }
+ else
+ {
+ USART_TransmitReceive_IT(husart);
+ }
+ return;
+ }
+ }
+ /* If some errors occur */
+ if((errorflags != RESET) && (((cr3its & USART_CR3_EIE) != RESET) || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)))
+ {
+ /* USART parity error interrupt occurred ----------------------------------*/
+ if(((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET))
+ {
+ husart->ErrorCode |= HAL_USART_ERROR_PE;
+ }
+
+ /* USART noise error interrupt occurred --------------------------------*/
+ if(((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
+ {
+ husart->ErrorCode |= HAL_USART_ERROR_NE;
+ }
+
+ /* USART frame error interrupt occurred --------------------------------*/
+ if(((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
+ {
+ husart->ErrorCode |= HAL_USART_ERROR_FE;
+ }
+
+ /* USART Over-Run interrupt occurred -----------------------------------*/
+ if(((isrflags & USART_SR_ORE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
+ {
+ husart->ErrorCode |= HAL_USART_ERROR_ORE;
+ }
+
+ if(husart->ErrorCode != HAL_USART_ERROR_NONE)
+ {
+ /* USART in mode Receiver -----------------------------------------------*/
+ if(((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
+ {
+ if(husart->State == HAL_USART_STATE_BUSY_RX)
+ {
+ USART_Receive_IT(husart);
+ }
+ else
+ {
+ USART_TransmitReceive_IT(husart);
+ }
+ }
+ /* If Overrun error occurs, or if any error occurs in DMA mode reception,
+ consider error as blocking */
+ dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR);
+ if(((husart->ErrorCode & HAL_USART_ERROR_ORE) != RESET) || dmarequest)
+ {
+ /* Set the USART state ready to be able to start again the process,
+ Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
+ USART_EndRxTransfer(husart);
+
+ /* Disable the USART DMA Rx request if enabled */
+ if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
+ {
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
+
+ /* Abort the USART DMA Rx channel */
+ if(husart->hdmarx != NULL)
+ {
+ /* Set the USART DMA Abort callback :
+ will lead to call HAL_USART_ErrorCallback() at end of DMA abort procedure */
+ husart->hdmarx->XferAbortCallback = USART_DMAAbortOnError;
+
+ if(HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ husart->hdmarx->XferAbortCallback(husart->hdmarx);
+ }
+ }
+ else
+ {
+ /* Call user error callback */
+ HAL_USART_ErrorCallback(husart);
+ }
+ }
+ else
+ {
+ /* Call user error callback */
+ HAL_USART_ErrorCallback(husart);
+ }
+ }
+ else
+ {
+ /* Call user error callback */
+ HAL_USART_ErrorCallback(husart);
+ husart->ErrorCode = HAL_USART_ERROR_NONE;
+ }
+ }
+ return;
+ }
+
+ /* USART in mode Transmitter -----------------------------------------------*/
+ if(((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET))
+ {
+ if(husart->State == HAL_USART_STATE_BUSY_TX)
+ {
+ USART_Transmit_IT(husart);
+ }
+ else
+ {
+ USART_TransmitReceive_IT(husart);
+ }
+ return;
+ }
+
+ /* USART in mode Transmitter (transmission end) ----------------------------*/
+ if(((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET))
+ {
+ USART_EndTransmit_IT(husart);
+ return;
+ }
+}
+
+/**
+ * @brief Tx Transfer completed callbacks.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval None
+ */
+__weak void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(husart);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_USART_TxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Tx Half Transfer completed callbacks.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval None
+ */
+__weak void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(husart);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_USART_TxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Rx Transfer completed callbacks.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval None
+ */
+__weak void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(husart);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_USART_TxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Rx Half Transfer completed callbacks.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval None
+ */
+__weak void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(husart);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_USART_TxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Tx/Rx Transfers completed callback for the non-blocking process.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval None
+ */
+__weak void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(husart);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_USART_TxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief USART error callbacks.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval None
+ */
+__weak void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(husart);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_USART_ErrorCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup USART_Exported_Functions_Group3 Peripheral State and Errors functions
+ * @brief USART State and Errors functions
+ *
+@verbatim
+ ==============================================================================
+ ##### Peripheral State and Errors functions #####
+ ==============================================================================
+ [..]
+ This subsection provides a set of functions allowing to return the State of
+ USART communication
+ process, return Peripheral Errors occurred during communication process
+ (+) HAL_USART_GetState() API can be helpful to check in run-time the state
+ of the USART peripheral.
+ (+) HAL_USART_GetError() check in run-time errors that could be occurred during
+ communication.
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Returns the USART state.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval HAL state
+ */
+HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart)
+{
+ return husart->State;
+}
+
+/**
+ * @brief Return the USART error code
+ * @param husart : pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART.
+ * @retval USART Error Code
+ */
+uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart)
+{
+ return husart->ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @brief DMA USART transmit process complete callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ /* DMA Normal mode */
+ if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U)
+ {
+ husart->TxXferCount = 0U;
+ if(husart->State == HAL_USART_STATE_BUSY_TX)
+ {
+ /* Disable the DMA transfer for transmit request by resetting the DMAT bit
+ in the USART CR3 register */
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
+
+ /* Enable the USART Transmit Complete Interrupt */
+ SET_BIT(husart->Instance->CR1, USART_CR1_TCIE);
+ }
+ }
+ /* DMA Circular mode */
+ else
+ {
+ if(husart->State == HAL_USART_STATE_BUSY_TX)
+ {
+ HAL_USART_TxCpltCallback(husart);
+ }
+ }
+}
+
+/**
+ * @brief DMA USART transmit process half complete callback
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA module.
+ * @retval None
+ */
+static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ HAL_USART_TxHalfCpltCallback(husart);
+}
+
+/**
+ * @brief DMA USART receive process complete callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ /* DMA Normal mode */
+ if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U)
+ {
+ husart->RxXferCount = 0x00U;
+
+ /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
+ CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
+
+ if(husart->State == HAL_USART_STATE_BUSY_RX)
+ {
+ /* Disable the DMA transfer for the Transmit/receiver requests by setting the DMAT/DMAR bit
+ in the USART CR3 register */
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
+
+ husart->State= HAL_USART_STATE_READY;
+ HAL_USART_RxCpltCallback(husart);
+ }
+ /* The USART state is HAL_USART_STATE_BUSY_TX_RX */
+ else
+ {
+ /* Disable the DMA transfer for the Transmit/receiver requests by setting the DMAT/DMAR bit
+ in the USART CR3 register */
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
+
+ husart->State= HAL_USART_STATE_READY;
+ HAL_USART_TxRxCpltCallback(husart);
+ }
+ }
+ /* DMA circular mode */
+ else
+ {
+ if(husart->State == HAL_USART_STATE_BUSY_RX)
+ {
+ HAL_USART_RxCpltCallback(husart);
+ }
+ /* The USART state is HAL_USART_STATE_BUSY_TX_RX */
+ else
+ {
+ HAL_USART_TxRxCpltCallback(husart);
+ }
+ }
+}
+
+/**
+ * @brief DMA USART receive process half complete callback
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA module.
+ * @retval None
+ */
+static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ HAL_USART_RxHalfCpltCallback(husart);
+}
+
+/**
+ * @brief DMA USART communication error callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void USART_DMAError(DMA_HandleTypeDef *hdma)
+{
+ uint32_t dmarequest = 0x00U;
+ USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ husart->RxXferCount = 0x00U;
+ husart->TxXferCount = 0x00U;
+
+ /* Stop USART DMA Tx request if ongoing */
+ dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT);
+ if((husart->State == HAL_USART_STATE_BUSY_TX) && dmarequest)
+ {
+ USART_EndTxTransfer(husart);
+ }
+
+ /* Stop USART DMA Rx request if ongoing */
+ dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR);
+ if((husart->State == HAL_USART_STATE_BUSY_RX) && dmarequest)
+ {
+ USART_EndRxTransfer(husart);
+ }
+
+ husart->ErrorCode |= HAL_USART_ERROR_DMA;
+ husart->State= HAL_USART_STATE_READY;
+
+ HAL_USART_ErrorCallback(husart);
+}
+
+/**
+ * @brief This function handles USART Communication Timeout.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @param Flag: specifies the USART flag to check.
+ * @param Status: The new Flag status (SET or RESET).
+ * @param Tickstart: Tick start value.
+ * @param Timeout: Timeout duration.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout)
+{
+ /* Wait until flag is set */
+ while((__HAL_USART_GET_FLAG(husart, Flag) ? SET : RESET) == Status)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0U)||((HAL_GetTick() - Tickstart ) > Timeout))
+ {
+ /* Disable the USART Transmit Complete Interrupt */
+ CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE);
+
+ /* Disable the USART RXNE Interrupt */
+ CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);
+
+ /* Disable the USART Parity Error Interrupt */
+ CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
+
+ /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
+
+ husart->State= HAL_USART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief End ongoing Tx transfer on USART peripheral (following error detection or Transmit completion).
+ * @param husart: USART handle.
+ * @retval None
+ */
+static void USART_EndTxTransfer(USART_HandleTypeDef *husart)
+{
+ /* Disable TXEIE and TCIE interrupts */
+ CLEAR_BIT(husart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
+
+ /* At end of Tx process, restore husart->State to Ready */
+ husart->State = HAL_USART_STATE_READY;
+}
+
+/**
+ * @brief End ongoing Rx transfer on USART peripheral (following error detection or Reception completion).
+ * @param husart: USART handle.
+ * @retval None
+ */
+static void USART_EndRxTransfer(USART_HandleTypeDef *husart)
+{
+ /* Disable RXNE, PE and ERR interrupts */
+ CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
+
+ /* At end of Rx process, restore husart->State to Ready */
+ husart->State = HAL_USART_STATE_READY;
+}
+
+/**
+ * @brief DMA USART communication abort callback, when initiated by HAL services on Error
+ * (To be called at end of DMA Abort procedure following error occurrence).
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma)
+{
+ USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ husart->RxXferCount = 0x00U;
+ husart->TxXferCount = 0x00U;
+
+ HAL_USART_ErrorCallback(husart);
+}
+
+/**
+ * @brief Simplex Send an amount of data in non-blocking mode.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval HAL status
+ * @note The USART errors are not managed to avoid the overrun error.
+ */
+static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart)
+{
+ uint16_t* tmp;
+
+ if(husart->State == HAL_USART_STATE_BUSY_TX)
+ {
+ if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+ {
+ tmp = (uint16_t*) husart->pTxBuffPtr;
+ husart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FFU);
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ husart->pTxBuffPtr += 2U;
+ }
+ else
+ {
+ husart->pTxBuffPtr += 1U;
+ }
+ }
+ else
+ {
+ husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FFU);
+ }
+
+ if(--husart->TxXferCount == 0U)
+ {
+ /* Disable the USART Transmit data register empty Interrupt */
+ CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE);
+
+ /* Enable the USART Transmit Complete Interrupt */
+ SET_BIT(husart->Instance->CR1, USART_CR1_TCIE);
+ }
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Wraps up transmission in non blocking mode.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart)
+{
+ /* Disable the USART Transmit Complete Interrupt */
+ CLEAR_BIT(husart->Instance->CR1, USART_CR1_TCIE);
+
+ /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
+
+ husart->State = HAL_USART_STATE_READY;
+
+ HAL_USART_TxCpltCallback(husart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Simplex Receive an amount of data in non-blocking mode.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart)
+{
+ uint16_t* tmp;
+ if(husart->State == HAL_USART_STATE_BUSY_RX)
+ {
+ if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+ {
+ tmp = (uint16_t*) husart->pRxBuffPtr;
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FFU);
+ husart->pRxBuffPtr += 2U;
+ }
+ else
+ {
+ *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FFU);
+ husart->pRxBuffPtr += 1U;
+ }
+ if(--husart->RxXferCount != 0x00U)
+ {
+ /* Send dummy byte in order to generate the clock for the slave to send the next data */
+ husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FFU);
+ }
+ }
+ else
+ {
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FFU);
+ }
+ else
+ {
+ *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007FU);
+ }
+
+ if(--husart->RxXferCount != 0x00U)
+ {
+ /* Send dummy byte in order to generate the clock for the slave to send the next data */
+ husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x00FFU);
+ }
+ }
+
+ if(husart->RxXferCount == 0U)
+ {
+ /* Disable the USART RXNE Interrupt */
+ CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);
+
+ /* Disable the USART Parity Error Interrupt */
+ CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
+
+ /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
+
+ husart->State = HAL_USART_STATE_READY;
+ HAL_USART_RxCpltCallback(husart);
+
+ return HAL_OK;
+ }
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking).
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart)
+{
+ uint16_t* tmp;
+
+ if(husart->State == HAL_USART_STATE_BUSY_TX_RX)
+ {
+ if(husart->TxXferCount != 0x00U)
+ {
+ if(__HAL_USART_GET_FLAG(husart, USART_FLAG_TXE) != RESET)
+ {
+ if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+ {
+ tmp = (uint16_t*) husart->pTxBuffPtr;
+ husart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FFU);
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ husart->pTxBuffPtr += 2U;
+ }
+ else
+ {
+ husart->pTxBuffPtr += 1U;
+ }
+ }
+ else
+ {
+ husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FFU);
+ }
+ husart->TxXferCount--;
+
+ /* Check the latest data transmitted */
+ if(husart->TxXferCount == 0U)
+ {
+ CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE);
+ }
+ }
+ }
+
+ if(husart->RxXferCount != 0x00U)
+ {
+ if(__HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE) != RESET)
+ {
+ if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+ {
+ tmp = (uint16_t*) husart->pRxBuffPtr;
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FFU);
+ husart->pRxBuffPtr += 2U;
+ }
+ else
+ {
+ *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FFU);
+ husart->pRxBuffPtr += 1U;
+ }
+ }
+ else
+ {
+ if(husart->Init.Parity == USART_PARITY_NONE)
+ {
+ *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FFU);
+ }
+ else
+ {
+ *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007FU);
+ }
+ }
+ husart->RxXferCount--;
+ }
+ }
+
+ /* Check the latest data received */
+ if(husart->RxXferCount == 0U)
+ {
+ /* Disable the USART RXNE Interrupt */
+ CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);
+
+ /* Disable the USART Parity Error Interrupt */
+ CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
+
+ /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
+ CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
+
+ husart->State = HAL_USART_STATE_READY;
+
+ HAL_USART_TxRxCpltCallback(husart);
+
+ return HAL_OK;
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Configures the USART pferipheral.
+ * @param husart: pointer to a USART_HandleTypeDef structure that contains
+ * the configuration information for the specified USART module.
+ * @retval None
+ */
+static void USART_SetConfig(USART_HandleTypeDef *husart)
+{
+ uint32_t tmpreg = 0x00U;
+
+ /* Check the parameters */
+ assert_param(IS_USART_INSTANCE(husart->Instance));
+ assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity));
+ assert_param(IS_USART_PHASE(husart->Init.CLKPhase));
+ assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit));
+ assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate));
+ assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength));
+ assert_param(IS_USART_STOPBITS(husart->Init.StopBits));
+ assert_param(IS_USART_PARITY(husart->Init.Parity));
+ assert_param(IS_USART_MODE(husart->Init.Mode));
+
+ /* The LBCL, CPOL and CPHA bits have to be selected when both the transmitter and the
+ receiver are disabled (TE=RE=0) to ensure that the clock pulses function correctly. */
+ CLEAR_BIT(husart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
+
+ /*---------------------------- USART CR2 Configuration ---------------------*/
+ tmpreg = husart->Instance->CR2;
+ /* Clear CLKEN, CPOL, CPHA and LBCL bits */
+ tmpreg &= (uint32_t)~((uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_CLKEN | USART_CR2_LBCL | USART_CR2_STOP));
+ /* Configure the USART Clock, CPOL, CPHA and LastBit -----------------------*/
+ /* Set CPOL bit according to husart->Init.CLKPolarity value */
+ /* Set CPHA bit according to husart->Init.CLKPhase value */
+ /* Set LBCL bit according to husart->Init.CLKLastBit value */
+ /* Set Stop Bits: Set STOP[13:12] bits according to husart->Init.StopBits value */
+ tmpreg |= (uint32_t)(USART_CLOCK_ENABLE| husart->Init.CLKPolarity |
+ husart->Init.CLKPhase| husart->Init.CLKLastBit | husart->Init.StopBits);
+ /* Write to USART CR2 */
+ WRITE_REG(husart->Instance->CR2, (uint32_t)tmpreg);
+
+ /*-------------------------- USART CR1 Configuration -----------------------*/
+ tmpreg = husart->Instance->CR1;
+
+ /* Clear M, PCE, PS, TE, RE and OVER8 bits */
+ tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | \
+ USART_CR1_RE | USART_CR1_OVER8));
+
+ /* Configure the USART Word Length, Parity and mode:
+ Set the M bits according to husart->Init.WordLength value
+ Set PCE and PS bits according to husart->Init.Parity value
+ Set TE and RE bits according to husart->Init.Mode value
+ Force OVER8 bit to 1 in order to reach the max USART frequencies */
+ tmpreg |= (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode | USART_CR1_OVER8;
+
+ /* Write to USART CR1 */
+ WRITE_REG(husart->Instance->CR1, (uint32_t)tmpreg);
+
+ /*-------------------------- USART CR3 Configuration -----------------------*/
+ /* Clear CTSE and RTSE bits */
+ CLEAR_BIT(husart->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE));
+
+ /*-------------------------- USART BRR Configuration -----------------------*/
+ if((husart->Instance == USART1) || (husart->Instance == USART6))
+ {
+ husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK2Freq(), husart->Init.BaudRate);
+ }
+ else
+ {
+ husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK1Freq(), husart->Init.BaudRate);
+ }
+}
+
+/**
+ * @}
+ */
+
+#endif /* HAL_USART_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
