Eric Lewiston
Hal Drivers for L4
Dependents: BSP OneHopeOnePrayer FINAL_AUDIO_RECORD AudioDemo
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STM32L4xx_HAL_Driver
by 
Senior Design: Sound Monitor
Diff: Src/stm32l4xx_hal_uart.c
- Revision:
- 0:80ee8f3b695e
diff -r 000000000000 -r 80ee8f3b695e Src/stm32l4xx_hal_uart.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Src/stm32l4xx_hal_uart.c Mon Nov 02 19:37:23 2015 +0000
@@ -0,0 +1,2093 @@
+/**
+ ******************************************************************************
+ * @file stm32l4xx_hal_uart.c
+ * @author MCD Application Team
+ * @version V1.1.0
+ * @date 16-September-2015
+ * @brief UART HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the Universal Asynchronous Receiver Transmitter Peripheral (UART).
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral Control functions
+ *
+ *
+ @verbatim
+ ===============================================================================
+ ##### How to use this driver #####
+ ===============================================================================
+ [..]
+ The UART HAL driver can be used as follows:
+
+ (#) Declare a UART_HandleTypeDef handle structure (eg. UART_HandleTypeDef huart).
+ (#) Initialize the UART low level resources by implementing the HAL_UART_MspInit() API:
+ (++) Enable the USARTx interface clock.
+ (++) UART pins configuration:
+ (+++) Enable the clock for the UART GPIOs.
+ (+++) Configure these UART pins as alternate function pull-up.
+ (++) NVIC configuration if you need to use interrupt process (HAL_UART_Transmit_IT()
+ and HAL_UART_Receive_IT() APIs):
+ (+++) Configure the USARTx interrupt priority.
+ (+++) Enable the NVIC USART IRQ handle.
+ (++) UART interrupts handling:
+ -@@- The specific UART interrupts (Transmission complete interrupt,
+ RXNE interrupt and Error Interrupts) are managed using the macros
+ __HAL_UART_ENABLE_IT() and __HAL_UART_DISABLE_IT() inside the transmit and receive processes.
+ (++) DMA Configuration if you need to use DMA process (HAL_UART_Transmit_DMA()
+ and HAL_UART_Receive_DMA() APIs):
+ (+++) Declare a DMA handle structure for the Tx/Rx channel.
+ (+++) Enable the DMAx interface clock.
+ (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
+ (+++) Configure the DMA Tx/Rx channel.
+ (+++) Associate the initialized DMA handle to the UART DMA Tx/Rx handle.
+ (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx channel.
+
+ (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware
+ flow control and Mode (Receiver/Transmitter) in the huart handle Init structure.
+
+ (#) If required, program UART advanced features (TX/RX pins swap, auto Baud rate detection,...)
+ in the huart handle AdvancedInit structure.
+
+ (#) For the UART asynchronous mode, initialize the UART registers by calling
+ the HAL_UART_Init() API.
+
+ (#) For the UART Half duplex mode, initialize the UART registers by calling
+ the HAL_HalfDuplex_Init() API.
+
+ (#) For the UART LIN (Local Interconnection Network) mode, initialize the UART registers
+ by calling the HAL_LIN_Init() API.
+
+ (#) For the UART Multiprocessor mode, initialize the UART registers
+ by calling the HAL_MultiProcessor_Init() API.
+
+ (#) For the UART RS485 Driver Enabled mode, initialize the UART registers
+ by calling the HAL_RS485Ex_Init() API.
+
+ [..]
+ (@) These API's (HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init(), HAL_MultiProcessor_Init(),
+ also configure the low level Hardware GPIO, CLOCK, CORTEX...etc) by
+ calling the customized HAL_UART_MspInit() API.
+
+ @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 "stm32l4xx_hal.h"
+
+/** @addtogroup STM32L4xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup UART UART
+ * @brief HAL UART module driver
+ * @{
+ */
+
+#ifdef HAL_UART_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @defgroup UART_Private_Constants UART Private Constants
+ * @{
+ */
+#define UART_CR1_FIELDS ((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | \
+ USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8)) /*!< UART or USART CR1 fields of parameters set by UART_SetConfig API */
+
+#define UART_LPUART_BRR_MIN ((uint32_t)0x00000300) /* LPUART BRR minimum authorized value */
+#define UART_LPUART_BRR_MAX ((uint32_t)0x000FFFFF) /* LPUART BRR maximum authorized value */
+/**
+ * @}
+ */
+
+/* Private macros ------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/** @addtogroup UART_Private_Functions
+ * @{
+ */
+static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
+static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
+static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
+static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
+static void UART_DMAError(DMA_HandleTypeDef *hdma);
+static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart);
+static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart);
+static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart);
+/**
+ * @}
+ */
+
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup UART_Exported_Functions UART Exported Functions
+ * @{
+ */
+
+/** @defgroup UART_Exported_Functions_Group1 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 USARTx or the UARTy
+ in asynchronous mode.
+ (+) For the asynchronous mode the parameters below 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 M1 and M0 bits (7-bit,
+ 8-bit or 9-bit), the possible UART frame formats are as listed in the following table:
+
+ (+++) Table 1. UART frame format.
+ (+++) +-----------------------------------------------------------------------+
+ (+++) | M1 bit | M0 bit | PCE bit | UART frame |
+ (+++) |---------|---------|-----------|---------------------------------------|
+ (+++) | 0 | 0 | 0 | | SB | 8 bit data | STB | |
+ (+++) |---------|---------|-----------|---------------------------------------|
+ (+++) | 0 | 0 | 1 | | SB | 7 bit data | PB | STB | |
+ (+++) |---------|---------|-----------|---------------------------------------|
+ (+++) | 0 | 1 | 0 | | SB | 9 bit data | STB | |
+ (+++) |---------|---------|-----------|---------------------------------------|
+ (+++) | 0 | 1 | 1 | | SB | 8 bit data | PB | STB | |
+ (+++) |---------|---------|-----------|---------------------------------------|
+ (+++) | 1 | 0 | 0 | | SB | 7 bit data | STB | |
+ (+++) |---------|---------|-----------|---------------------------------------|
+ (+++) | 1 | 0 | 1 | | SB | 6 bit data | PB | STB | |
+ (+++) +-----------------------------------------------------------------------+
+ (++) Hardware flow control
+ (++) Receiver/transmitter modes
+ (++) Over Sampling Method
+ (++) One-Bit Sampling Method
+ (+) For the asynchronous mode, the following advanced features can be configured as well:
+ (++) TX and/or RX pin level inversion
+ (++) data logical level inversion
+ (++) RX and TX pins swap
+ (++) RX overrun detection disabling
+ (++) DMA disabling on RX error
+ (++) MSB first on communication line
+ (++) auto Baud rate detection
+ [..]
+ The HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init()and HAL_MultiProcessor_Init()API
+ follow respectively the UART asynchronous, UART Half duplex, UART LIN mode
+ and UART multiprocessor mode configuration procedures (details for the procedures
+ are available in reference manual).
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initialize the UART mode according to the specified
+ * parameters in the UART_InitTypeDef and initialize the associated handle.
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
+{
+ /* Check the UART handle allocation */
+ if(huart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ if(huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
+ {
+ /* Check the parameters */
+ assert_param(IS_UART_HWFLOW_INSTANCE(huart->Instance));
+ }
+ else
+ {
+ /* Check the parameters */
+ assert_param(IS_UART_INSTANCE(huart->Instance));
+ }
+
+ if(huart->State == HAL_UART_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ huart->Lock = HAL_UNLOCKED;
+
+ /* Init the low level hardware : GPIO, CLOCK */
+ HAL_UART_MspInit(huart);
+ }
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Disable the Peripheral */
+ __HAL_UART_DISABLE(huart);
+
+ /* Set the UART Communication parameters */
+ if (UART_SetConfig(huart) == HAL_ERROR)
+ {
+ return HAL_ERROR;
+ }
+
+ if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
+ {
+ UART_AdvFeatureConfig(huart);
+ }
+
+ /* In asynchronous mode, the following bits must be kept cleared:
+ - LINEN and CLKEN bits in the USART_CR2 register,
+ - SCEN, HDSEL and IREN bits in the USART_CR3 register.*/
+ huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
+ huart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
+
+ /* Enable the Peripheral */
+ __HAL_UART_ENABLE(huart);
+
+ /* TEACK and/or REACK to check before moving huart->State to Ready */
+ return (UART_CheckIdleState(huart));
+}
+
+/**
+ * @brief Initialize the half-duplex mode according to the specified
+ * parameters in the UART_InitTypeDef and creates the associated handle.
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
+{
+ /* Check the UART handle allocation */
+ if(huart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check UART instance */
+ assert_param(IS_UART_HALFDUPLEX_INSTANCE(huart->Instance));
+
+ if(huart->State == HAL_UART_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ huart->Lock = HAL_UNLOCKED;
+
+ /* Init the low level hardware : GPIO, CLOCK */
+ HAL_UART_MspInit(huart);
+ }
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Disable the Peripheral */
+ __HAL_UART_DISABLE(huart);
+
+ /* Set the UART Communication parameters */
+ if (UART_SetConfig(huart) == HAL_ERROR)
+ {
+ return HAL_ERROR;
+ }
+
+ if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
+ {
+ UART_AdvFeatureConfig(huart);
+ }
+
+ /* In half-duplex mode, the following bits must be kept cleared:
+ - LINEN and CLKEN bits in the USART_CR2 register,
+ - SCEN and IREN bits in the USART_CR3 register.*/
+ huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
+ huart->Instance->CR3 &= ~(USART_CR3_IREN | USART_CR3_SCEN);
+
+ /* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
+ huart->Instance->CR3 |= USART_CR3_HDSEL;
+
+ /* Enable the Peripheral */
+ __HAL_UART_ENABLE(huart);
+
+ /* TEACK and/or REACK to check before moving huart->State to Ready */
+ return (UART_CheckIdleState(huart));
+}
+
+
+/**
+ * @brief Initialize the LIN mode according to the specified
+ * parameters in the UART_InitTypeDef and creates the associated handle .
+ * @param huart: UART handle.
+ * @param BreakDetectLength: specifies the LIN break detection length.
+ * This parameter can be one of the following values:
+ * @arg UART_LINBREAKDETECTLENGTH_10B: 10-bit break detection
+ * @arg UART_LINBREAKDETECTLENGTH_11B: 11-bit break detection
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength)
+{
+ /* Check the UART handle allocation */
+ if(huart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the LIN UART instance */
+ assert_param(IS_UART_LIN_INSTANCE(huart->Instance));
+ /* Check the Break detection length parameter */
+ assert_param(IS_UART_LIN_BREAK_DETECT_LENGTH(BreakDetectLength));
+
+ /* LIN mode limited to 16-bit oversampling only */
+ if(huart->Init.OverSampling == UART_OVERSAMPLING_8)
+ {
+ return HAL_ERROR;
+ }
+ /* LIN mode limited to 8-bit data length */
+ if(huart->Init.WordLength != UART_WORDLENGTH_8B)
+ {
+ return HAL_ERROR;
+ }
+
+ if(huart->State == HAL_UART_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ huart->Lock = HAL_UNLOCKED;
+
+ /* Init the low level hardware : GPIO, CLOCK */
+ HAL_UART_MspInit(huart);
+ }
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Disable the Peripheral */
+ __HAL_UART_DISABLE(huart);
+
+ /* Set the UART Communication parameters */
+ if (UART_SetConfig(huart) == HAL_ERROR)
+ {
+ return HAL_ERROR;
+ }
+
+ if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
+ {
+ UART_AdvFeatureConfig(huart);
+ }
+
+ /* In LIN mode, the following bits must be kept cleared:
+ - LINEN and CLKEN bits in the USART_CR2 register,
+ - SCEN and IREN bits in the USART_CR3 register.*/
+ huart->Instance->CR2 &= ~(USART_CR2_CLKEN);
+ huart->Instance->CR3 &= ~(USART_CR3_HDSEL | USART_CR3_IREN | USART_CR3_SCEN);
+
+ /* Enable the LIN mode by setting the LINEN bit in the CR2 register */
+ huart->Instance->CR2 |= USART_CR2_LINEN;
+
+ /* Set the USART LIN Break detection length. */
+ MODIFY_REG(huart->Instance->CR2, USART_CR2_LBDL, BreakDetectLength);
+
+ /* Enable the Peripheral */
+ __HAL_UART_ENABLE(huart);
+
+ /* TEACK and/or REACK to check before moving huart->State to Ready */
+ return (UART_CheckIdleState(huart));
+}
+
+
+
+/**
+ * @brief Initialize the multiprocessor mode according to the specified
+ * parameters in the UART_InitTypeDef and initialize the associated handle.
+ * @param huart: UART handle.
+ * @param Address: UART node address (4-, 6-, 7- or 8-bit long).
+ * @param WakeUpMethod: specifies the UART wakeup method.
+ * This parameter can be one of the following values:
+ * @arg UART_WAKEUPMETHOD_IDLELINE: WakeUp by an idle line detection
+ * @arg UART_WAKEUPMETHOD_ADDRESSMARK: WakeUp by an address mark
+ * @note If the user resorts to idle line detection wake up, the Address parameter
+ * is useless and ignored by the initialization function.
+ * @note If the user resorts to address mark wake up, the address length detection
+ * is configured by default to 4 bits only. For the UART to be able to
+ * manage 6-, 7- or 8-bit long addresses detection, the API
+ * HAL_MultiProcessorEx_AddressLength_Set() must be called after
+ * HAL_MultiProcessor_Init().
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
+{
+ /* Check the UART handle allocation */
+ if(huart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the wake up method parameter */
+ assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod));
+
+ if(huart->State == HAL_UART_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ huart->Lock = HAL_UNLOCKED;
+
+ /* Init the low level hardware : GPIO, CLOCK */
+ HAL_UART_MspInit(huart);
+ }
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Disable the Peripheral */
+ __HAL_UART_DISABLE(huart);
+
+ /* Set the UART Communication parameters */
+ if (UART_SetConfig(huart) == HAL_ERROR)
+ {
+ return HAL_ERROR;
+ }
+
+ if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
+ {
+ UART_AdvFeatureConfig(huart);
+ }
+
+ /* In multiprocessor mode, the following bits must be kept cleared:
+ - LINEN and CLKEN bits in the USART_CR2 register,
+ - SCEN, HDSEL and IREN bits in the USART_CR3 register. */
+ huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
+ huart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
+
+ if (WakeUpMethod == UART_WAKEUPMETHOD_ADDRESSMARK)
+ {
+ /* If address mark wake up method is chosen, set the USART address node */
+ MODIFY_REG(huart->Instance->CR2, USART_CR2_ADD, ((uint32_t)Address << UART_CR2_ADDRESS_LSB_POS));
+ }
+
+ /* Set the wake up method by setting the WAKE bit in the CR1 register */
+ MODIFY_REG(huart->Instance->CR1, USART_CR1_WAKE, WakeUpMethod);
+
+ /* Enable the Peripheral */
+ __HAL_UART_ENABLE(huart);
+
+ /* TEACK and/or REACK to check before moving huart->State to Ready */
+ return (UART_CheckIdleState(huart));
+}
+
+
+
+
+/**
+ * @brief DeInitialize the UART peripheral.
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_DeInit(UART_HandleTypeDef *huart)
+{
+ /* Check the UART handle allocation */
+ if(huart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_UART_INSTANCE(huart->Instance));
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Disable the Peripheral */
+ __HAL_UART_DISABLE(huart);
+
+ huart->Instance->CR1 = 0x0;
+ huart->Instance->CR2 = 0x0;
+ huart->Instance->CR3 = 0x0;
+
+ /* DeInit the low level hardware */
+ HAL_UART_MspDeInit(huart);
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ huart->State = HAL_UART_STATE_RESET;
+
+ /* Process Unlock */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Initialize the UART MSP.
+ * @param huart: UART handle.
+ * @retval None
+ */
+ __weak void HAL_UART_MspInit(UART_HandleTypeDef *huart)
+{
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_UART_MspInit can be implemented in the user file
+ */
+}
+
+/**
+ * @brief DeInitialize the UART MSP.
+ * @param huart: UART handle.
+ * @retval None
+ */
+ __weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
+{
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_UART_MspDeInit can be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup UART_Exported_Functions_Group2 IO operation functions
+ * @brief UART Transmit/Receive functions
+ *
+@verbatim
+ ===============================================================================
+ ##### IO operation functions #####
+ ===============================================================================
+ This subsection provides a set of functions allowing to manage the UART asynchronous
+ and Half duplex data transfers.
+
+ (#) There are two mode 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 UART IRQ when using Interrupt mode or the DMA IRQ when
+ using DMA mode.
+ The HAL_UART_TxCpltCallback(), HAL_UART_RxCpltCallback() user callbacks
+ will be executed respectively at the end of the transmit or Receive process
+ The HAL_UART_ErrorCallback()user callback will be executed when a communication error is detected
+
+ (#) Blocking mode API's are :
+ (+) HAL_UART_Transmit()
+ (+) HAL_UART_Receive()
+
+ (#) Non-Blocking mode API's with Interrupt are :
+ (+) HAL_UART_Transmit_IT()
+ (+) HAL_UART_Receive_IT()
+ (+) HAL_UART_IRQHandler()
+
+ (#) No-Blocking mode API's with DMA are :
+ (+) HAL_UART_Transmit_DMA()
+ (+) HAL_UART_Receive_DMA()
+ (+) HAL_UART_DMAPause()
+ (+) HAL_UART_DMAResume()
+ (+) HAL_UART_DMAStop()
+
+ (#) A set of Transfer Complete Callbacks are provided in No_Blocking mode:
+ (+) HAL_UART_TxHalfCpltCallback()
+ (+) HAL_UART_TxCpltCallback()
+ (+) HAL_UART_RxHalfCpltCallback()
+ (+) HAL_UART_RxCpltCallback()
+ (+) HAL_UART_ErrorCallback()
+
+
+ -@- In the Half duplex communication, it is forbidden to run the transmit
+ and receive process in parallel, the UART state HAL_UART_STATE_BUSY_TX_RX can't be useful.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Send an amount of data in blocking mode.
+ * @param huart: UART handle.
+ * @param pData: Pointer to data buffer.
+ * @param Size: Amount of data to be sent.
+ * @param Timeout: Timeout duration.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint16_t* tmp;
+
+ if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_RX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a non-blocking receive process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+
+ huart->TxXferSize = Size;
+ huart->TxXferCount = Size;
+ while(huart->TxXferCount > 0)
+ {
+ huart->TxXferCount--;
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ tmp = (uint16_t*) pData;
+ huart->Instance->TDR = (*tmp & (uint16_t)0x01FF);
+ pData += 2;
+ }
+ else
+ {
+ huart->Instance->TDR = (*pData++ & (uint8_t)0xFF);
+ }
+ }
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ /* Check if a non-blocking receive Process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_READY;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive an amount of data in blocking mode.
+ * @param huart: UART handle.
+ * @param pData: pointer to data buffer.
+ * @param Size: amount of data to be received.
+ * @param Timeout: Timeout duration.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint16_t* tmp;
+ uint16_t uhMask;
+
+ if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_TX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a non-blocking transmit process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+
+ huart->RxXferSize = Size;
+ huart->RxXferCount = Size;
+
+ /* Computation of UART mask to apply to RDR register */
+ UART_MASK_COMPUTATION(huart);
+ uhMask = huart->Mask;
+
+ /* as long as data have to be received */
+ while(huart->RxXferCount > 0)
+ {
+ huart->RxXferCount--;
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ tmp = (uint16_t*) pData ;
+ *tmp = (uint16_t)(huart->Instance->RDR & uhMask);
+ pData +=2;
+ }
+ else
+ {
+ *pData++ = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask);
+ }
+ }
+
+ /* Check if a non-blocking transmit Process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_READY;
+ }
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Send an amount of data in interrupt mode.
+ * @param huart: UART handle.
+ * @param pData: pointer to data buffer.
+ * @param Size: amount of data to be sent.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
+{
+ if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_RX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->pTxBuffPtr = pData;
+ huart->TxXferSize = Size;
+ huart->TxXferCount = Size;
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a receive process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ /* Enable the UART Transmit Data Register Empty Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive an amount of data in interrupt mode.
+ * @param huart: UART handle.
+ * @param pData: pointer to data buffer.
+ * @param Size: amount of data to be received.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
+{
+ if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_TX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->pRxBuffPtr = pData;
+ huart->RxXferSize = Size;
+ huart->RxXferCount = Size;
+
+ /* Computation of UART mask to apply to RDR register */
+ UART_MASK_COMPUTATION(huart);
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a transmit process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+
+ /* Enable the UART Parity Error Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_PE);
+
+ /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ /* Enable the UART Data Register not empty Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Send an amount of data in DMA mode.
+ * @param huart: UART handle.
+ * @param pData: pointer to data buffer.
+ * @param Size: amount of data to be sent.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
+{
+ uint32_t *tmp;
+
+ if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_RX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->pTxBuffPtr = pData;
+ huart->TxXferSize = Size;
+ huart->TxXferCount = Size;
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a receive process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+
+ /* Set the UART DMA transfer complete callback */
+ huart->hdmatx->XferCpltCallback = UART_DMATransmitCplt;
+
+ /* Set the UART DMA Half transfer complete callback */
+ huart->hdmatx->XferHalfCpltCallback = UART_DMATxHalfCplt;
+
+ /* Set the DMA error callback */
+ huart->hdmatx->XferErrorCallback = UART_DMAError;
+
+ /* Enable the UART transmit DMA channel */
+ tmp = (uint32_t*)&pData;
+ HAL_DMA_Start_IT(huart->hdmatx, *(uint32_t*)tmp, (uint32_t)&huart->Instance->TDR, Size);
+
+ /* Clear the TC flag in the ICR register */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
+
+ /* Enable the DMA transfer for transmit request by setting the DMAT bit
+ in the UART CR3 register */
+ huart->Instance->CR3 |= USART_CR3_DMAT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive an amount of data in DMA mode.
+ * @param huart: UART handle.
+ * @param pData: pointer to data buffer.
+ * @param Size: amount of data to be received.
+ * @note When the UART parity is enabled (PCE = 1), the received data contain
+ * the parity bit (MSB position).
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
+{
+ uint32_t *tmp;
+
+ if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_TX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->pRxBuffPtr = pData;
+ huart->RxXferSize = Size;
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a transmit process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+
+ /* Set the UART DMA transfer complete callback */
+ huart->hdmarx->XferCpltCallback = UART_DMAReceiveCplt;
+
+ /* Set the UART DMA Half transfer complete callback */
+ huart->hdmarx->XferHalfCpltCallback = UART_DMARxHalfCplt;
+
+ /* Set the DMA error callback */
+ huart->hdmarx->XferErrorCallback = UART_DMAError;
+
+ /* Enable the DMA channel */
+ tmp = (uint32_t*)&pData;
+ HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->RDR, *(uint32_t*)tmp, Size);
+
+ /* Enable the DMA transfer for the receiver request by setting the DMAR bit
+ in the UART CR3 register */
+ huart->Instance->CR3 |= USART_CR3_DMAR;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Pause the DMA Transfer.
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart)
+{
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ if(huart->State == HAL_UART_STATE_BUSY_TX)
+ {
+ /* Disable the UART DMA Tx request */
+ huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
+ }
+ else if(huart->State == HAL_UART_STATE_BUSY_RX)
+ {
+ /* Disable the UART DMA Rx request */
+ huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR);
+ }
+ else if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ /* Disable the UART DMA Tx request */
+ huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
+ /* Disable the UART DMA Rx request */
+ huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Resume the DMA Transfer.
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart)
+{
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ if(huart->State == HAL_UART_STATE_BUSY_TX)
+ {
+ /* Enable the UART DMA Tx request */
+ huart->Instance->CR3 |= USART_CR3_DMAT;
+ }
+ else if(huart->State == HAL_UART_STATE_BUSY_RX)
+ {
+ /* Clear the Overrun flag before resuming the Rx transfer */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
+
+ /* Enable the UART DMA Rx request */
+ huart->Instance->CR3 |= USART_CR3_DMAR;
+ }
+ else if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ /* Clear the Overrun flag before resuming the Rx transfer */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
+
+ /* Enable the UART DMA Rx request before the DMA Tx request */
+ huart->Instance->CR3 |= USART_CR3_DMAR;
+
+ /* Enable the UART DMA Tx request */
+ huart->Instance->CR3 |= USART_CR3_DMAT;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Stop the DMA Transfer.
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart)
+{
+ /* The Lock is not implemented on this API to allow the user application
+ to call the HAL UART API under callbacks HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback() /
+ HAL_UART_TxHalfCpltCallback / HAL_UART_RxHalfCpltCallback:
+ indeed, when HAL_DMA_Abort() API is called, the DMA TX/RX Transfer or Half Transfer complete
+ interrupt is generated if the DMA transfer interruption occurs at the middle or at the end of
+ the stream and the corresponding call back is executed. */
+
+ /* Disable the UART Tx/Rx DMA requests */
+ huart->Instance->CR3 &= ~USART_CR3_DMAT;
+ huart->Instance->CR3 &= ~USART_CR3_DMAR;
+
+ /* Abort the UART DMA tx channel */
+ if(huart->hdmatx != NULL)
+ {
+ HAL_DMA_Abort(huart->hdmatx);
+ }
+ /* Abort the UART DMA rx channel */
+ if(huart->hdmarx != NULL)
+ {
+ HAL_DMA_Abort(huart->hdmarx);
+ }
+
+ huart->State = HAL_UART_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle UART interrupt request.
+ * @param huart: UART handle.
+ * @retval None
+ */
+void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
+{
+ /* UART parity error interrupt occurred -------------------------------------*/
+ if((__HAL_UART_GET_IT(huart, UART_IT_PE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_PE) != RESET))
+ {
+ __HAL_UART_CLEAR_IT(huart, UART_CLEAR_PEF);
+
+ huart->ErrorCode |= HAL_UART_ERROR_PE;
+ /* Set the UART state ready to be able to start again the process */
+ huart->State = HAL_UART_STATE_READY;
+ }
+
+ /* UART frame error interrupt occurred --------------------------------------*/
+ if((__HAL_UART_GET_IT(huart, UART_IT_FE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET))
+ {
+ __HAL_UART_CLEAR_IT(huart, UART_CLEAR_FEF);
+
+ huart->ErrorCode |= HAL_UART_ERROR_FE;
+ /* Set the UART state ready to be able to start again the process */
+ huart->State = HAL_UART_STATE_READY;
+ }
+
+ /* UART noise error interrupt occurred --------------------------------------*/
+ if((__HAL_UART_GET_IT(huart, UART_IT_NE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET))
+ {
+ __HAL_UART_CLEAR_IT(huart, UART_CLEAR_NEF);
+
+ huart->ErrorCode |= HAL_UART_ERROR_NE;
+ /* Set the UART state ready to be able to start again the process */
+ huart->State = HAL_UART_STATE_READY;
+ }
+
+ /* UART Over-Run interrupt occurred -----------------------------------------*/
+ if((__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET))
+ {
+ __HAL_UART_CLEAR_IT(huart, UART_CLEAR_OREF);
+
+ huart->ErrorCode |= HAL_UART_ERROR_ORE;
+ /* Set the UART state ready to be able to start again the process */
+ huart->State = HAL_UART_STATE_READY;
+ }
+
+ /* Call UART Error Call back function if need be --------------------------*/
+ if(huart->ErrorCode != HAL_UART_ERROR_NONE)
+ {
+ HAL_UART_ErrorCallback(huart);
+ }
+
+ /* UART wakeup from Stop mode interrupt occurred -------------------------------------*/
+ if((__HAL_UART_GET_IT(huart, UART_IT_WUF) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_WUF) != RESET))
+ {
+ __HAL_UART_CLEAR_IT(huart, UART_CLEAR_WUF);
+ /* Set the UART state ready to be able to start again the process */
+ huart->State = HAL_UART_STATE_READY;
+ HAL_UARTEx_WakeupCallback(huart);
+ }
+
+ /* UART in mode Receiver ---------------------------------------------------*/
+ if((__HAL_UART_GET_IT(huart, UART_IT_RXNE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET))
+ {
+ UART_Receive_IT(huart);
+ /* Clear RXNE interrupt flag */
+ __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
+ }
+
+
+ /* UART in mode Transmitter ------------------------------------------------*/
+ if((__HAL_UART_GET_IT(huart, UART_IT_TXE) != RESET) &&(__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TXE) != RESET))
+ {
+ UART_Transmit_IT(huart);
+ }
+
+ /* UART in mode Transmitter (transmission end) -----------------------------*/
+ if((__HAL_UART_GET_IT(huart, UART_IT_TC) != RESET) &&(__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET))
+ {
+ UART_EndTransmit_IT(huart);
+ }
+
+}
+
+/**
+ * @brief Tx Transfer completed callback.
+ * @param huart: UART handle.
+ * @retval None
+ */
+ __weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
+{
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_UART_TxCpltCallback can be implemented in the user file.
+ */
+}
+
+/**
+ * @brief Tx Half Transfer completed callback.
+ * @param huart: UART handle.
+ * @retval None
+ */
+ __weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart)
+{
+ /* NOTE: This function should not be modified, when the callback is needed,
+ the HAL_UART_TxHalfCpltCallback can be implemented in the user file.
+ */
+}
+
+/**
+ * @brief Rx Transfer completed callback.
+ * @param huart: UART handle.
+ * @retval None
+ */
+__weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
+{
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_UART_RxCpltCallback can be implemented in the user file.
+ */
+}
+
+/**
+ * @brief Rx Half Transfer completed callback.
+ * @param huart: UART handle.
+ * @retval None
+ */
+__weak void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart)
+{
+ /* NOTE: This function should not be modified, when the callback is needed,
+ the HAL_UART_RxHalfCpltCallback can be implemented in the user file.
+ */
+}
+
+/**
+ * @brief UART error callback.
+ * @param huart: UART handle.
+ * @retval None
+ */
+ __weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
+{
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_UART_ErrorCallback can be implemented in the user file.
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup UART_Exported_Functions_Group3 Peripheral Control functions
+ * @brief UART control functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral Control functions #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to control the UART.
+ (+) HAL_MultiProcessor_EnableMuteMode() API enables mute mode
+ (+) HAL_MultiProcessor_DisableMuteMode() API disables mute mode
+ (+) HAL_MultiProcessor_EnterMuteMode() API enters mute mode
+ (+) HAL_MultiProcessor_EnableMuteMode() API enables mute mode
+ (+) UART_SetConfig() API configures the UART peripheral
+ (+) UART_AdvFeatureConfig() API optionally configures the UART advanced features
+ (+) UART_CheckIdleState() API ensures that TEACK and/or REACK are set after initialization
+ (+) UART_Wakeup_AddressConfig() API configures the wake-up from stop mode parameters
+ (+) HAL_HalfDuplex_EnableTransmitter() API disables receiver and enables transmitter
+ (+) HAL_HalfDuplex_EnableReceiver() API disables transmitter and enables receiver
+ (+) HAL_LIN_SendBreak() API transmits the break characters
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Enable UART in mute mode (does not mean UART enters mute mode;
+ * to enter mute mode, HAL_MultiProcessor_EnterMuteMode() API must be called).
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_MultiProcessor_EnableMuteMode(UART_HandleTypeDef *huart)
+{
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Enable USART mute mode by setting the MME bit in the CR1 register */
+ huart->Instance->CR1 |= USART_CR1_MME;
+
+ huart->State = HAL_UART_STATE_READY;
+
+ return (UART_CheckIdleState(huart));
+}
+
+/**
+ * @brief Disable UART mute mode (does not mean the UART actually exits mute mode
+ * as it may not have been in mute mode at this very moment).
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_MultiProcessor_DisableMuteMode(UART_HandleTypeDef *huart)
+{
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Disable USART mute mode by clearing the MME bit in the CR1 register */
+ huart->Instance->CR1 &= ~(USART_CR1_MME);
+
+ huart->State = HAL_UART_STATE_READY;
+
+ return (UART_CheckIdleState(huart));
+}
+
+/**
+ * @brief Enter UART mute mode (means UART actually enters mute mode).
+ * @note To exit from mute mode, HAL_MultiProcessor_DisableMuteMode() API must be called.
+ * @param huart: UART handle.
+ * @retval None
+ */
+void HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart)
+{
+ __HAL_UART_SEND_REQ(huart, UART_MUTE_MODE_REQUEST);
+}
+
+/**
+ * @brief Enable the UART transmitter and disable the UART receiver.
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart)
+{
+ /* Process Locked */
+ __HAL_LOCK(huart);
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Clear TE and RE bits */
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
+ /* Enable the USART's transmit interface by setting the TE bit in the USART CR1 register */
+ SET_BIT(huart->Instance->CR1, USART_CR1_TE);
+
+ huart->State= HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Enable the UART receiver and disable the UART transmitter.
+ * @param huart: UART handle.
+ * @retval HAL status.
+ */
+HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart)
+{
+ /* Process Locked */
+ __HAL_LOCK(huart);
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Clear TE and RE bits */
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
+ /* Enable the USART's receive interface by setting the RE bit in the USART CR1 register */
+ SET_BIT(huart->Instance->CR1, USART_CR1_RE);
+
+ huart->State = HAL_UART_STATE_READY;
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+
+/**
+ * @brief Transmit break characters.
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_LIN_SendBreak(UART_HandleTypeDef *huart)
+{
+ /* Check the parameters */
+ assert_param(IS_UART_INSTANCE(huart->Instance));
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Send break characters */
+ huart->Instance->RQR |= UART_SENDBREAK_REQUEST;
+
+ huart->State = HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+
+/**
+ * @}
+ */
+
+/** @defgroup UART_Exported_Functions_Group4 Peripheral State and Error functions
+ * @brief UART Peripheral State functions
+ *
+@verbatim
+ ==============================================================================
+ ##### Peripheral State and Error functions #####
+ ==============================================================================
+ [..]
+ This subsection provides functions allowing to :
+ (+) Return the UART handle state.
+ (+) Return the UART handle error code
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Return the UART handle state.
+ * @param huart : pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART.
+ * @retval HAL state
+ */
+HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart)
+{
+ return huart->State;
+}
+
+/**
+* @brief Return the UART handle error code.
+* @param huart : pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART.
+* @retval UART Error Code
+*/
+uint32_t HAL_UART_GetError(UART_HandleTypeDef *huart)
+{
+ return huart->ErrorCode;
+}
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup UART_Private_Functions UART Private Functions
+ * @{
+ */
+
+/**
+ * @brief Configure the UART peripheral.
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef UART_SetConfig(UART_HandleTypeDef *huart)
+{
+ uint32_t tmpreg = 0x00000000;
+ UART_ClockSourceTypeDef clocksource = UART_CLOCKSOURCE_UNDEFINED;
+ uint16_t brrtemp = 0x0000;
+ uint16_t usartdiv = 0x0000;
+ HAL_StatusTypeDef ret = HAL_OK;
+
+ /* Check the parameters */
+ assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
+ assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
+ if(UART_INSTANCE_LOWPOWER(huart))
+ {
+ assert_param(IS_LPUART_STOPBITS(huart->Init.StopBits));
+ }
+ else
+ {
+ assert_param(IS_UART_STOPBITS(huart->Init.StopBits));
+ assert_param(IS_UART_ONE_BIT_SAMPLE(huart->Init.OneBitSampling));
+ }
+
+ assert_param(IS_UART_PARITY(huart->Init.Parity));
+ assert_param(IS_UART_MODE(huart->Init.Mode));
+ assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl));
+ assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
+
+
+ /*-------------------------- USART CR1 Configuration -----------------------*/
+ /* Clear M, PCE, PS, TE, RE and OVER8 bits and configure
+ * the UART Word Length, Parity, Mode and oversampling:
+ * set the M bits according to huart->Init.WordLength value
+ * set PCE and PS bits according to huart->Init.Parity value
+ * set TE and RE bits according to huart->Init.Mode value
+ * set OVER8 bit according to huart->Init.OverSampling value */
+ tmpreg = (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode | huart->Init.OverSampling ;
+ MODIFY_REG(huart->Instance->CR1, UART_CR1_FIELDS, tmpreg);
+
+ /*-------------------------- USART CR2 Configuration -----------------------*/
+ /* Configure the UART Stop Bits: Set STOP[13:12] bits according
+ * to huart->Init.StopBits value */
+ MODIFY_REG(huart->Instance->CR2, USART_CR2_STOP, huart->Init.StopBits);
+
+ /*-------------------------- USART CR3 Configuration -----------------------*/
+ /* Configure
+ * - UART HardWare Flow Control: set CTSE and RTSE bits according
+ * to huart->Init.HwFlowCtl value
+ * - one-bit sampling method versus three samples' majority rule according
+ * to huart->Init.OneBitSampling (not applicable to LPUART) */
+ tmpreg = (uint32_t)huart->Init.HwFlowCtl;
+ if (!(UART_INSTANCE_LOWPOWER(huart)))
+ {
+ tmpreg |= huart->Init.OneBitSampling;
+ }
+ MODIFY_REG(huart->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE | USART_CR3_ONEBIT), tmpreg);
+
+ /*-------------------------- USART BRR Configuration -----------------------*/
+ UART_GETCLOCKSOURCE(huart, clocksource);
+
+ /* Check LPUART instance */
+ if(UART_INSTANCE_LOWPOWER(huart))
+ {
+ /* Retrieve frequency clock */
+ tmpreg = 0;
+
+ switch (clocksource)
+ {
+ case UART_CLOCKSOURCE_PCLK1:
+ tmpreg = HAL_RCC_GetPCLK1Freq();
+ break;
+ case UART_CLOCKSOURCE_HSI:
+ tmpreg = (uint32_t) HSI_VALUE;
+ break;
+ case UART_CLOCKSOURCE_SYSCLK:
+ tmpreg = HAL_RCC_GetSysClockFreq();
+ break;
+ case UART_CLOCKSOURCE_LSE:
+ tmpreg = (uint32_t) LSE_VALUE;
+ break;
+ case UART_CLOCKSOURCE_UNDEFINED:
+ default:
+ ret = HAL_ERROR;
+ break;
+ }
+
+ /* if proper clock source reported */
+ if (tmpreg != 0)
+ {
+ /* ensure that Frequency clock is in the range [3 * baudrate, 4096 * baudrate] */
+ if ( (tmpreg < (3 * huart->Init.BaudRate) ) ||
+ (tmpreg > (4096 * huart->Init.BaudRate) ))
+ {
+ ret = HAL_ERROR;
+ }
+ else
+ {
+ switch (clocksource)
+ {
+ case UART_CLOCKSOURCE_PCLK1:
+ tmpreg = (uint32_t)(UART_DIV_LPUART(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_HSI:
+ tmpreg = (uint32_t)(UART_DIV_LPUART(HSI_VALUE, huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_SYSCLK:
+ tmpreg = (uint32_t)(UART_DIV_LPUART(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_LSE:
+ tmpreg = (uint32_t)(UART_DIV_LPUART(LSE_VALUE, huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_UNDEFINED:
+ default:
+ ret = HAL_ERROR;
+ break;
+ }
+
+ if ((tmpreg >= UART_LPUART_BRR_MIN) && (tmpreg <= UART_LPUART_BRR_MAX))
+ {
+ huart->Instance->BRR = tmpreg;
+ }
+ else
+ {
+ ret = HAL_ERROR;
+ }
+ } /* if ( (tmpreg < (3 * huart->Init.BaudRate) ) || (tmpreg > (4096 * huart->Init.BaudRate) )) */
+ } /* if (tmpreg != 0) */
+ }
+ /* Check UART Over Sampling to set Baud Rate Register */
+ else if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
+ {
+ switch (clocksource)
+ {
+ case UART_CLOCKSOURCE_PCLK1:
+ usartdiv = (uint16_t)(UART_DIV_SAMPLING8(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_PCLK2:
+ usartdiv = (uint16_t)(UART_DIV_SAMPLING8(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_HSI:
+ usartdiv = (uint16_t)(UART_DIV_SAMPLING8(HSI_VALUE, huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_SYSCLK:
+ usartdiv = (uint16_t)(UART_DIV_SAMPLING8(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_LSE:
+ usartdiv = (uint16_t)(UART_DIV_SAMPLING8(LSE_VALUE, huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_UNDEFINED:
+ default:
+ ret = HAL_ERROR;
+ break;
+ }
+
+ brrtemp = usartdiv & 0xFFF0;
+ brrtemp |= (uint16_t)((usartdiv & (uint16_t)0x000F) >> 1U);
+ huart->Instance->BRR = brrtemp;
+ }
+ else
+ {
+ switch (clocksource)
+ {
+ case UART_CLOCKSOURCE_PCLK1:
+ huart->Instance->BRR = (uint16_t)(UART_DIV_SAMPLING16(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_PCLK2:
+ huart->Instance->BRR = (uint16_t)(UART_DIV_SAMPLING16(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_HSI:
+ huart->Instance->BRR = (uint16_t)(UART_DIV_SAMPLING16(HSI_VALUE, huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_SYSCLK:
+ huart->Instance->BRR = (uint16_t)(UART_DIV_SAMPLING16(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_LSE:
+ huart->Instance->BRR = (uint16_t)(UART_DIV_SAMPLING16(LSE_VALUE, huart->Init.BaudRate));
+ break;
+ case UART_CLOCKSOURCE_UNDEFINED:
+ default:
+ ret = HAL_ERROR;
+ break;
+ }
+ }
+
+ return ret;
+
+}
+
+/**
+ * @brief Configure the UART peripheral advanced features.
+ * @param huart: UART handle.
+ * @retval None
+ */
+void UART_AdvFeatureConfig(UART_HandleTypeDef *huart)
+{
+ /* Check whether the set of advanced features to configure is properly set */
+ assert_param(IS_UART_ADVFEATURE_INIT(huart->AdvancedInit.AdvFeatureInit));
+
+ /* if required, configure TX pin active level inversion */
+ if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_TXINVERT_INIT))
+ {
+ assert_param(IS_UART_ADVFEATURE_TXINV(huart->AdvancedInit.TxPinLevelInvert));
+ MODIFY_REG(huart->Instance->CR2, USART_CR2_TXINV, huart->AdvancedInit.TxPinLevelInvert);
+ }
+
+ /* if required, configure RX pin active level inversion */
+ if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXINVERT_INIT))
+ {
+ assert_param(IS_UART_ADVFEATURE_RXINV(huart->AdvancedInit.RxPinLevelInvert));
+ MODIFY_REG(huart->Instance->CR2, USART_CR2_RXINV, huart->AdvancedInit.RxPinLevelInvert);
+ }
+
+ /* if required, configure data inversion */
+ if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DATAINVERT_INIT))
+ {
+ assert_param(IS_UART_ADVFEATURE_DATAINV(huart->AdvancedInit.DataInvert));
+ MODIFY_REG(huart->Instance->CR2, USART_CR2_DATAINV, huart->AdvancedInit.DataInvert);
+ }
+
+ /* if required, configure RX/TX pins swap */
+ if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_SWAP_INIT))
+ {
+ assert_param(IS_UART_ADVFEATURE_SWAP(huart->AdvancedInit.Swap));
+ MODIFY_REG(huart->Instance->CR2, USART_CR2_SWAP, huart->AdvancedInit.Swap);
+ }
+
+ /* if required, configure RX overrun detection disabling */
+ if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXOVERRUNDISABLE_INIT))
+ {
+ assert_param(IS_UART_OVERRUN(huart->AdvancedInit.OverrunDisable));
+ MODIFY_REG(huart->Instance->CR3, USART_CR3_OVRDIS, huart->AdvancedInit.OverrunDisable);
+ }
+
+ /* if required, configure DMA disabling on reception error */
+ if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DMADISABLEONERROR_INIT))
+ {
+ assert_param(IS_UART_ADVFEATURE_DMAONRXERROR(huart->AdvancedInit.DMADisableonRxError));
+ MODIFY_REG(huart->Instance->CR3, USART_CR3_DDRE, huart->AdvancedInit.DMADisableonRxError);
+ }
+
+ /* if required, configure auto Baud rate detection scheme */
+ if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_AUTOBAUDRATE_INIT))
+ {
+ assert_param(IS_USART_AUTOBAUDRATE_DETECTION_INSTANCE(huart->Instance));
+ assert_param(IS_UART_ADVFEATURE_AUTOBAUDRATE(huart->AdvancedInit.AutoBaudRateEnable));
+ MODIFY_REG(huart->Instance->CR2, USART_CR2_ABREN, huart->AdvancedInit.AutoBaudRateEnable);
+ /* set auto Baudrate detection parameters if detection is enabled */
+ if(huart->AdvancedInit.AutoBaudRateEnable == UART_ADVFEATURE_AUTOBAUDRATE_ENABLE)
+ {
+ assert_param(IS_UART_ADVFEATURE_AUTOBAUDRATEMODE(huart->AdvancedInit.AutoBaudRateMode));
+ MODIFY_REG(huart->Instance->CR2, USART_CR2_ABRMODE, huart->AdvancedInit.AutoBaudRateMode);
+ }
+ }
+
+ /* if required, configure MSB first on communication line */
+ if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_MSBFIRST_INIT))
+ {
+ assert_param(IS_UART_ADVFEATURE_MSBFIRST(huart->AdvancedInit.MSBFirst));
+ MODIFY_REG(huart->Instance->CR2, USART_CR2_MSBFIRST, huart->AdvancedInit.MSBFirst);
+ }
+}
+
+/**
+ * @brief Check the UART Idle State.
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef UART_CheckIdleState(UART_HandleTypeDef *huart)
+{
+ /* Initialize the UART ErrorCode */
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+
+ /* Check if the Transmitter is enabled */
+ if((huart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
+ {
+ /* Wait until TEACK flag is set */
+ if(UART_WaitOnFlagUntilTimeout(huart, USART_ISR_TEACK, RESET, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
+ {
+ /* Timeout occurred */
+ return HAL_TIMEOUT;
+ }
+ }
+ /* Check if the Receiver is enabled */
+ if((huart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
+ {
+ /* Wait until REACK flag is set */
+ if(UART_WaitOnFlagUntilTimeout(huart, USART_ISR_REACK, RESET, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
+ {
+ /* Timeout occurred */
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Initialize the UART State */
+ huart->State= HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DMA UART transmit process complete callback.
+ * @param hdma: DMA handle.
+ * @retval None
+ */
+static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* DMA Normal mode */
+ if ( HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC) )
+ {
+ huart->TxXferCount = 0;
+
+ /* Disable the DMA transfer for transmit request by resetting the DMAT bit
+ in the UART CR3 register */
+ huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAT);
+
+ /* Enable the UART Transmit Complete Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
+ }
+ /* DMA Circular mode */
+ else
+ {
+ HAL_UART_TxCpltCallback(huart);
+ }
+
+}
+
+/**
+ * @brief DMA UART transmit process half complete callback.
+ * @param hdma : DMA handle.
+ * @retval None
+ */
+static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ HAL_UART_TxHalfCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART receive process complete callback.
+ * @param hdma: DMA handle.
+ * @retval None
+ */
+static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* DMA Normal mode */
+ if ( HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC) )
+ {
+ huart->RxXferCount = 0;
+
+ /* Disable the DMA transfer for the receiver request by resetting the DMAR bit
+ in the UART CR3 register */
+ huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAR);
+
+ /* Check if a transmit Process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_READY;
+ }
+ }
+
+ HAL_UART_RxCpltCallback(huart);
+}
+
+/**
+ * @brief Handle UART Communication Timeout.
+ * @param huart: UART handle.
+ * @param Flag: specifies the UART flag to check.
+ * @param Status: the Flag status (SET or RESET).
+ * @param Timeout: Timeout duration.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
+{
+ uint32_t tickstart = HAL_GetTick();
+
+ /* Wait until flag is set */
+ if(Status == RESET)
+ {
+ while(__HAL_UART_GET_FLAG(huart, Flag) == RESET)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
+ {
+ /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
+
+ huart->State= HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ else
+ {
+ while(__HAL_UART_GET_FLAG(huart, Flag) != RESET)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
+ {
+ /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
+
+ huart->State= HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief DMA UART receive process half complete callback.
+ * @param hdma : DMA handle.
+ * @retval None
+ */
+static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ HAL_UART_RxHalfCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART communication error callback.
+ * @param hdma: DMA handle.
+ * @retval None
+ */
+static void UART_DMAError(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ huart->RxXferCount = 0;
+ huart->TxXferCount = 0;
+ huart->State= HAL_UART_STATE_READY;
+ huart->ErrorCode |= HAL_UART_ERROR_DMA;
+ HAL_UART_ErrorCallback(huart);
+}
+
+/**
+ * @brief Send an amount of data in interrupt mode.
+ * @note Function is called under interruption only, once
+ * interruptions have been enabled by HAL_UART_Transmit_IT().
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
+{
+ uint16_t* tmp;
+
+ if ((huart->State == HAL_UART_STATE_BUSY_TX) || (huart->State == HAL_UART_STATE_BUSY_TX_RX))
+ {
+
+ if(huart->TxXferCount == 0)
+ {
+ /* Disable the UART Transmit Data Register Empty Interrupt */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
+
+ /* Enable the UART Transmit Complete Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
+
+ return HAL_OK;
+ }
+ else
+ {
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ tmp = (uint16_t*) huart->pTxBuffPtr;
+ huart->Instance->TDR = (*tmp & (uint16_t)0x01FF);
+ huart->pTxBuffPtr += 2;
+ }
+ else
+ {
+ huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0xFF);
+ }
+
+ huart->TxXferCount--;
+
+ return HAL_OK;
+ }
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+
+/**
+ * @brief Wrap up transmission in non-blocking mode.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart)
+{
+ /* Disable the UART Transmit Complete Interrupt */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
+
+ /* Check if a receive process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+ else
+ {
+ /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
+
+ huart->State = HAL_UART_STATE_READY;
+ }
+
+ HAL_UART_TxCpltCallback(huart);
+
+ return HAL_OK;
+}
+
+
+/**
+ * @brief Receive an amount of data in interrupt mode.
+ * @note Function is called under interruption only, once
+ * interruptions have been enabled by HAL_UART_Receive_IT()
+ * @param huart: UART handle.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
+{
+ uint16_t* tmp;
+ uint16_t uhMask = huart->Mask;
+
+ if((huart->State == HAL_UART_STATE_BUSY_RX) || (huart->State == HAL_UART_STATE_BUSY_TX_RX))
+ {
+
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ tmp = (uint16_t*) huart->pRxBuffPtr ;
+ *tmp = (uint16_t)(huart->Instance->RDR & uhMask);
+ huart->pRxBuffPtr +=2;
+ }
+ else
+ {
+ *huart->pRxBuffPtr++ = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask);
+ }
+
+ if(--huart->RxXferCount == 0)
+ {
+ __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
+
+ /* Check if a transmit Process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+ else
+ {
+ /* Disable the UART Parity Error Interrupt */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
+
+ /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
+
+ huart->State = HAL_UART_STATE_READY;
+ }
+
+ HAL_UART_RxCpltCallback(huart);
+
+ return HAL_OK;
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @}
+ */
+
+#endif /* HAL_UART_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+