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Diffstat (limited to 'stmhal/hal/f7/src/stm32f7xx_hal_uart.c')
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diff --git a/stmhal/hal/f7/src/stm32f7xx_hal_uart.c b/stmhal/hal/f7/src/stm32f7xx_hal_uart.c deleted file mode 100644 index 060659414..000000000 --- a/stmhal/hal/f7/src/stm32f7xx_hal_uart.c +++ /dev/null @@ -1,2184 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f7xx_hal_uart.c - * @author MCD Application Team - * @version V1.1.2 - * @date 23-September-2016 - * @brief UART HAL module driver. - * This file provides firmware functions to manage the following - * functionalities of the Universal Asynchronous Receiver Transmitter (UART) peripheral: - * + Initialization and de-initialization functions - * + IO operation functions - * + Peripheral Control functions - * + Peripheral State and Errors functions - * - @verbatim - ============================================================================== - ##### How to use this driver ##### - ============================================================================== - [..] - The UART HAL driver can be used as follows: - - (#) Declare a UART_HandleTypeDef handle structure. - - (#) 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. - (##) 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 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 UART 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 Init 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 LIN mode, initialize the UART registers by calling the HAL_LIN_Init() API. - - (#) For the Multi-Processor mode, initialize the UART registers by calling - the HAL_MultiProcessor_Init() API. - - [..] - (@) The specific UART interrupts (Transmission complete interrupt, - RXNE interrupt and Error Interrupts) will be managed using the macros - __HAL_UART_ENABLE_IT() and __HAL_UART_DISABLE_IT() inside the transmit - and receive process. - - [..] - (@) These APIs (HAL_UART_Init() and HAL_HalfDuplex_Init()) configure also the - low level Hardware GPIO, CLOCK, CORTEX...etc) by calling the customized - HAL_UART_MspInit() API. - - [..] - Three operation modes are available within this driver : - - *** Polling mode IO operation *** - ================================= - [..] - (+) Send an amount of data in blocking mode using HAL_UART_Transmit() - (+) Receive an amount of data in blocking mode using HAL_UART_Receive() - - *** Interrupt mode IO operation *** - =================================== - [..] - (+) Send an amount of data in non blocking mode using HAL_UART_Transmit_IT() - (+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_UART_TxCpltCallback - (+) Receive an amount of data in non blocking mode using HAL_UART_Receive_IT() - (+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_UART_RxCpltCallback - (+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can - add his own code by customization of function pointer HAL_UART_ErrorCallback - - *** DMA mode IO operation *** - ============================== - [..] - (+) Send an amount of data in non blocking mode (DMA) using HAL_UART_Transmit_DMA() - (+) At transmission end of half transfer HAL_UART_TxHalfCpltCallback is executed and user can - add his own code by customization of function pointer HAL_UART_TxHalfCpltCallback - (+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_UART_TxCpltCallback - (+) Receive an amount of data in non blocking mode (DMA) using HAL_UART_Receive_DMA() - (+) At reception end of half transfer HAL_UART_RxHalfCpltCallback is executed and user can - add his own code by customization of function pointer HAL_UART_RxHalfCpltCallback - (+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_UART_RxCpltCallback - (+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can - add his own code by customization of function pointer HAL_UART_ErrorCallback - (+) Pause the DMA Transfer using HAL_UART_DMAPause() - (+) Resume the DMA Transfer using HAL_UART_DMAResume() - (+) Stop the DMA Transfer using HAL_UART_DMAStop() - - *** UART HAL driver macros list *** - ============================================= - [..] - Below the list of most used macros in UART HAL driver. - - (+) __HAL_UART_ENABLE: Enable the UART peripheral - (+) __HAL_UART_DISABLE: Disable the UART peripheral - (+) __HAL_UART_GET_FLAG : Check whether the specified UART flag is set or not - (+) __HAL_UART_CLEAR_IT : Clears the specified UART ISR flag - (+) __HAL_UART_ENABLE_IT: Enable the specified UART interrupt - (+) __HAL_UART_DISABLE_IT: Disable the specified UART interrupt - (+) __HAL_UART_GET_IT_SOURCE: Check whether the specified UART interrupt has occurred or not - - [..] - (@) You can refer to the UART 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 "stm32f7xx_hal.h" - -/** @addtogroup STM32F7xx_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)) -/** - * @} - */ -/* Private macro -------------------------------------------------------------*/ -/* Private variables ---------------------------------------------------------*/ -/* Private function prototypes -----------------------------------------------*/ -/** @addtogroup UART_Private_Functions - * @{ - */ -static void UART_EndTxTransfer(UART_HandleTypeDef *huart); -static void UART_EndRxTransfer(UART_HandleTypeDef *huart); -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 void UART_DMAAbortOnError(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 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 UART frame formats. - (++) Hardware flow control - (++) Receiver/transmitter modes - (++) Over Sampling Method - [..] - The HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init() and HAL_MultiProcessor_Init() APIs - follow respectively the UART asynchronous, UART Half duplex, LIN and Multi-Processor - configuration procedures (details for the procedures are available in reference manual (RM0329)). - -@endverbatim - * @{ - */ - -/** - * @brief Initializes the UART 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_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->gState == 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->gState = 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.*/ - CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN)); - CLEAR_BIT(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->gState and huart->RxState to Ready */ - return (UART_CheckIdleState(huart)); -} - -/** - * @brief Initializes 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; - } - - if(huart->gState == 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->gState = 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.*/ - CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN)); - CLEAR_BIT(huart->Instance->CR3, (USART_CR3_IREN | USART_CR3_SCEN)); - - /* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */ - SET_BIT(huart->Instance->CR3, USART_CR3_HDSEL); - - /* Enable the Peripheral */ - __HAL_UART_ENABLE(huart); - - /* TEACK and/or REACK to check before moving huart->gState and huart->RxState 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 @ref UART_LINBREAKDETECTLENGTH_10B 10-bit break detection - * @arg @ref 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 parameters */ - assert_param(IS_UART_INSTANCE(huart->Instance)); - assert_param(IS_UART_LIN_BREAK_DETECT_LENGTH(BreakDetectLength)); - assert_param(IS_LIN_WORD_LENGTH(huart->Init.WordLength)); - - if(huart->gState == 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->gState = 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.*/ - CLEAR_BIT(huart->Instance->CR2, USART_CR2_CLKEN); - CLEAR_BIT(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 */ - SET_BIT(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->gState and huart->RxState 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 @ref UART_WAKEUPMETHOD_IDLELINE WakeUp by an idle line detection - * @arg @ref 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 - * @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->gState == 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->gState = 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. */ - CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN)); - CLEAR_BIT(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->gState and huart->RxState to Ready */ - return (UART_CheckIdleState(huart)); -} - - -/** - * @brief Initialize the RS485 Driver enable feature according to the specified - * parameters in the UART_InitTypeDef and creates the associated handle. - * @param huart: UART handle. - * @param Polarity: select the driver enable polarity. - * This parameter can be one of the following values: - * @arg @ref UART_DE_POLARITY_HIGH DE signal is active high - * @arg @ref UART_DE_POLARITY_LOW DE signal is active low - * @param AssertionTime: Driver Enable assertion time: - * 5-bit value defining the time between the activation of the DE (Driver Enable) - * signal and the beginning of the start bit. It is expressed in sample time - * units (1/8 or 1/16 bit time, depending on the oversampling rate) - * @param DeassertionTime: Driver Enable deassertion time: - * 5-bit value defining the time between the end of the last stop bit, in a - * transmitted message, and the de-activation of the DE (Driver Enable) signal. - * It is expressed in sample time units (1/8 or 1/16 bit time, depending on the - * oversampling rate). - * @retval HAL status - */ -HAL_StatusTypeDef HAL_RS485Ex_Init(UART_HandleTypeDef *huart, uint32_t Polarity, uint32_t AssertionTime, uint32_t DeassertionTime) -{ - uint32_t temp = 0x0; - - /* Check the UART handle allocation */ - if(huart == NULL) - { - return HAL_ERROR; - } - /* Check the Driver Enable UART instance */ - assert_param(IS_UART_DRIVER_ENABLE_INSTANCE(huart->Instance)); - - /* Check the Driver Enable polarity */ - assert_param(IS_UART_DE_POLARITY(Polarity)); - - /* Check the Driver Enable assertion time */ - assert_param(IS_UART_ASSERTIONTIME(AssertionTime)); - - /* Check the Driver Enable deassertion time */ - assert_param(IS_UART_DEASSERTIONTIME(DeassertionTime)); - - if(huart->gState == HAL_UART_STATE_RESET) - { - /* Allocate lock resource and initialize it */ - huart->Lock = HAL_UNLOCKED; - - /* Init the low level hardware : GPIO, CLOCK, CORTEX */ - HAL_UART_MspInit(huart); - } - - huart->gState = 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); - } - - /* Enable the Driver Enable mode by setting the DEM bit in the CR3 register */ - SET_BIT(huart->Instance->CR3, USART_CR3_DEM); - - /* Set the Driver Enable polarity */ - MODIFY_REG(huart->Instance->CR3, USART_CR3_DEP, Polarity); - - /* Set the Driver Enable assertion and deassertion times */ - temp = (AssertionTime << UART_CR1_DEAT_ADDRESS_LSB_POS); - temp |= (DeassertionTime << UART_CR1_DEDT_ADDRESS_LSB_POS); - MODIFY_REG(huart->Instance->CR1, (USART_CR1_DEDT|USART_CR1_DEAT), temp); - - /* Enable the Peripheral */ - __HAL_UART_ENABLE(huart); - - /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */ - return (UART_CheckIdleState(huart)); -} - -/** - * @brief DeInitializes 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->gState = HAL_UART_STATE_BUSY; - - /* Disable the Peripheral */ - __HAL_UART_DISABLE(huart); - - huart->Instance->CR1 = 0x0U; - huart->Instance->CR2 = 0x0U; - huart->Instance->CR3 = 0x0U; - - /* DeInit the low level hardware */ - HAL_UART_MspDeInit(huart); - - huart->ErrorCode = HAL_UART_ERROR_NONE; - huart->gState = HAL_UART_STATE_RESET; - huart->RxState = HAL_UART_STATE_RESET; - - /* Process Unlock */ - __HAL_UNLOCK(huart); - - return HAL_OK; -} - -/** - * @brief UART MSP Init - * @param huart: uart handle - * @retval None - */ -__weak void HAL_UART_MspInit(UART_HandleTypeDef *huart) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(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 UART MSP DeInit - * @param huart: uart handle - * @retval None - */ -__weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(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. - (+) Non-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() - (+) UART_Transmit_IT() - (+) UART_Receive_IT() - - (#) Non-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 Non_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; - uint32_t tickstart = 0U; - - /* Check that a Tx process is not already ongoing */ - if(huart->gState == HAL_UART_STATE_READY) - { - if((pData == NULL ) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(huart); - - huart->ErrorCode = HAL_UART_ERROR_NONE; - huart->gState = HAL_UART_STATE_BUSY_TX; - - /* Init tickstart for timeout managment*/ - tickstart = HAL_GetTick(); - - huart->TxXferSize = Size; - huart->TxXferCount = Size; - while(huart->TxXferCount > 0U) - { - huart->TxXferCount--; - if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, tickstart, 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)0x01FFU); - pData += 2; - } - else - { - huart->Instance->TDR = (*pData++ & (uint8_t)0xFFU); - } - } - if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - - /* At end of Tx process, restore huart->gState to Ready */ - huart->gState = 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; - uint32_t tickstart = 0U; - - /* Check that a Rx process is not already ongoing */ - if(huart->RxState == HAL_UART_STATE_READY) - { - if((pData == NULL ) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(huart); - - huart->ErrorCode = HAL_UART_ERROR_NONE; - huart->RxState = HAL_UART_STATE_BUSY_RX; - - /* Init tickstart for timeout managment*/ - tickstart = HAL_GetTick(); - - 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 > 0U) - { - huart->RxXferCount--; - if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, 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 +=2U; - } - else - { - *pData++ = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask); - } - } - - /* At end of Rx process, restore huart->RxState to Ready */ - huart->RxState = 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) -{ - /* Check that a Tx process is not already ongoing */ - if(huart->gState == HAL_UART_STATE_READY) - { - if((pData == NULL ) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(huart); - - huart->pTxBuffPtr = pData; - huart->TxXferSize = Size; - huart->TxXferCount = Size; - - huart->ErrorCode = HAL_UART_ERROR_NONE; - huart->gState = HAL_UART_STATE_BUSY_TX; - - /* Process Unlocked */ - __HAL_UNLOCK(huart); - - /* Enable the UART Transmit Data Register Empty Interrupt */ - SET_BIT(huart->Instance->CR1, USART_CR1_TXEIE); - - 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) -{ - /* Check that a Rx process is not already ongoing */ - if(huart->RxState == HAL_UART_STATE_READY) - { - if((pData == NULL ) || (Size == 0U)) - { - 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; - huart->RxState = HAL_UART_STATE_BUSY_RX; - - /* Process Unlocked */ - __HAL_UNLOCK(huart); - - /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */ - SET_BIT(huart->Instance->CR3, USART_CR3_EIE); - - /* Enable the UART Parity Error and Data Register not empty Interrupts */ - SET_BIT(huart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE); - - 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; - - /* Check that a Tx process is not already ongoing */ - if(huart->gState == HAL_UART_STATE_READY) - { - if((pData == NULL ) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(huart); - - huart->pTxBuffPtr = pData; - huart->TxXferSize = Size; - huart->TxXferCount = Size; - - huart->ErrorCode = HAL_UART_ERROR_NONE; - huart->gState = 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; - - /* Set the DMA abort callback */ - huart->hdmatx->XferAbortCallback = NULL; - - /* 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 SR register by writing 0 to it */ - __HAL_UART_CLEAR_IT(huart, UART_FLAG_TC); - - /* Process Unlocked */ - __HAL_UNLOCK(huart); - - /* Enable the DMA transfer for transmit request by setting the DMAT bit - in the UART CR3 register */ - SET_BIT(huart->Instance->CR3, USART_CR3_DMAT); - - 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; - - /* Check that a Rx process is not already ongoing */ - if(huart->RxState == HAL_UART_STATE_READY) - { - if((pData == NULL ) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(huart); - - huart->pRxBuffPtr = pData; - huart->RxXferSize = Size; - - huart->ErrorCode = HAL_UART_ERROR_NONE; - huart->RxState = 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; - - /* Set the DMA abort callback */ - huart->hdmarx->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - tmp = (uint32_t*)&pData; - HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->RDR, *(uint32_t*)tmp, Size); - - /* Process Unlocked */ - __HAL_UNLOCK(huart); - - /* Enable the UART Parity Error Interrupt */ - SET_BIT(huart->Instance->CR1, USART_CR1_PEIE); - - /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */ - SET_BIT(huart->Instance->CR3, USART_CR3_EIE); - - /* Enable the DMA transfer for the receiver request by setting the DMAR bit - in the UART CR3 register */ - SET_BIT(huart->Instance->CR3, USART_CR3_DMAR); - - 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->gState == HAL_UART_STATE_BUSY_TX) && - (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))) - { - /* Disable the UART DMA Tx request */ - CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); - } - if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && - (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))) - { - /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */ - CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE); - CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); - - /* Disable the UART DMA Rx request */ - CLEAR_BIT(huart->Instance->CR3, 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->gState == HAL_UART_STATE_BUSY_TX) - { - /* Enable the UART DMA Tx request */ - SET_BIT(huart->Instance->CR3, USART_CR3_DMAT); - } - if(huart->RxState == HAL_UART_STATE_BUSY_RX) - { - /* Clear the Overrun flag before resuming the Rx transfer*/ - __HAL_UART_CLEAR_IT(huart, UART_CLEAR_OREF); - - /* Reenable PE and ERR (Frame error, noise error, overrun error) interrupts */ - SET_BIT(huart->Instance->CR1, USART_CR1_PEIE); - SET_BIT(huart->Instance->CR3, USART_CR3_EIE); - - /* Enable the UART DMA Rx request */ - SET_BIT(huart->Instance->CR3, USART_CR3_DMAR); - } - - /* If the UART peripheral is still not enabled, enable it */ - if ((huart->Instance->CR1 & USART_CR1_UE) == 0U) - { - /* Enable UART peripheral */ - __HAL_UART_ENABLE(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. */ - - /* Stop UART DMA Tx request if ongoing */ - if ((huart->gState == HAL_UART_STATE_BUSY_TX) && - (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))) - { - CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); - - /* Abort the UART DMA Tx channel */ - if(huart->hdmatx != NULL) - { - HAL_DMA_Abort(huart->hdmatx); - } - - UART_EndTxTransfer(huart); - } - - /* Stop UART DMA Rx request if ongoing */ - if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && - (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))) - { - CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); - - /* Abort the UART DMA Rx channel */ - if(huart->hdmarx != NULL) - { - HAL_DMA_Abort(huart->hdmarx); - } - - UART_EndRxTransfer(huart); - } - - return HAL_OK; -} - -/** - * @brief This function handles UART interrupt request. - * @param huart: uart handle - * @retval None - */ -void HAL_UART_IRQHandler(UART_HandleTypeDef *huart) -{ - uint32_t isrflags = READ_REG(huart->Instance->ISR); - uint32_t cr1its = READ_REG(huart->Instance->CR1); - uint32_t cr3its = READ_REG(huart->Instance->CR3); - uint32_t errorflags; - - /* If no error occurs */ - errorflags = (isrflags & (uint32_t)(USART_ISR_PE | USART_ISR_FE | USART_ISR_ORE | USART_ISR_NE)); - if (errorflags == RESET) - { - /* UART in mode Receiver ---------------------------------------------------*/ - if(((isrflags & USART_ISR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)) - { - UART_Receive_IT(huart); - return; - } - } - - /* If some errors occur */ - if( (errorflags != RESET) - && ( ((cr3its & USART_CR3_EIE) != RESET) - || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)) ) - { - - /* UART parity error interrupt occurred -------------------------------------*/ - if(((isrflags & USART_ISR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET)) - { - __HAL_UART_CLEAR_IT(huart, UART_CLEAR_PEF); - - huart->ErrorCode |= HAL_UART_ERROR_PE; - } - - /* UART frame error interrupt occurred --------------------------------------*/ - if(((isrflags & USART_ISR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)) - { - __HAL_UART_CLEAR_IT(huart, UART_CLEAR_FEF); - - huart->ErrorCode |= HAL_UART_ERROR_FE; - } - - /* UART noise error interrupt occurred --------------------------------------*/ - if(((isrflags & USART_ISR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)) - { - __HAL_UART_CLEAR_IT(huart, UART_CLEAR_NEF); - - huart->ErrorCode |= HAL_UART_ERROR_NE; - } - - /* UART Over-Run interrupt occurred -----------------------------------------*/ - if(((isrflags & USART_ISR_ORE) != RESET) && - (((cr1its & USART_CR1_RXNEIE) != RESET) || ((cr3its & USART_CR3_EIE) != RESET))) - { - __HAL_UART_CLEAR_IT(huart, UART_CLEAR_OREF); - - huart->ErrorCode |= HAL_UART_ERROR_ORE; - } - - /* Call UART Error Call back function if need be --------------------------*/ - if(huart->ErrorCode != HAL_UART_ERROR_NONE) - { - /* UART in mode Receiver ---------------------------------------------------*/ - if(((isrflags & USART_ISR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)) - { - UART_Receive_IT(huart); - } - - /* If Overrun error occurs, or if any error occurs in DMA mode reception, - consider error as blocking */ - if (((huart->ErrorCode & HAL_UART_ERROR_ORE) != RESET) || - (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))) - { - /* Blocking error : transfer is aborted - Set the UART state ready to be able to start again the process, - Disable Rx Interrupts, and disable Rx DMA request, if ongoing */ - UART_EndRxTransfer(huart); - - /* Disable the UART DMA Rx request if enabled */ - if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) - { - CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); - - /* Abort the UART DMA Rx channel */ - if(huart->hdmarx != NULL) - { - /* Set the UART DMA Abort callback : - will lead to call HAL_UART_ErrorCallback() at end of DMA abort procedure */ - huart->hdmarx->XferAbortCallback = UART_DMAAbortOnError; - - /* Abort DMA RX */ - if(HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK) - { - /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */ - huart->hdmarx->XferAbortCallback(huart->hdmarx); - } - } - else - { - /* Call user error callback */ - HAL_UART_ErrorCallback(huart); - } - } - else - { - /* Call user error callback */ - HAL_UART_ErrorCallback(huart); - } - } - else - { - /* Non Blocking error : transfer could go on. - Error is notified to user through user error callback */ - HAL_UART_ErrorCallback(huart); - huart->ErrorCode = HAL_UART_ERROR_NONE; - } - } - return; - - } /* End if some error occurs */ - - /* UART in mode Transmitter ------------------------------------------------*/ - if(((isrflags & USART_ISR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET)) - { - UART_Transmit_IT(huart); - return; - } - - /* UART in mode Transmitter (transmission end) -----------------------------*/ - if(((isrflags & USART_ISR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET)) - { - UART_EndTransmit_IT(huart); - return; - } - -} - -/** - * @brief This function handles UART Communication Timeout. - * @param huart UART handle - * @param Flag specifies the UART flag to check. - * @param Status The new Flag status (SET or RESET). - * @param Tickstart Tick start value - * @param Timeout Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout) -{ - /* Wait until flag is set */ - while((__HAL_UART_GET_FLAG(huart, Flag) ? SET : RESET) == Status) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0U)||((HAL_GetTick()-Tickstart) >= Timeout)) - { - /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */ - CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE)); - CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); - - huart->gState = HAL_UART_STATE_READY; - huart->RxState = HAL_UART_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(huart); - return HAL_TIMEOUT; - } - } - } - 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((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U) - { - huart->TxXferCount = 0U; - - /* Disable the DMA transfer for transmit request by setting the DMAT bit - in the UART CR3 register */ - CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); - - /* Enable the UART Transmit Complete Interrupt */ - SET_BIT(huart->Instance->CR1, USART_CR1_TCIE); - } - /* 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((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U) - { - huart->RxXferCount = 0U; - - /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */ - CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE); - CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); - - /* Disable the DMA transfer for the receiver request by setting the DMAR bit - in the UART CR3 register */ - CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); - - /* At end of Rx process, restore huart->RxState to Ready */ - huart->RxState = HAL_UART_STATE_READY; - } - HAL_UART_RxCpltCallback(huart); -} - -/** - * @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 = 0U; - huart->TxXferCount = 0U; - /* Stop UART DMA Tx request if ongoing */ - if ( (huart->gState == HAL_UART_STATE_BUSY_TX) - &&(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) ) - { - UART_EndTxTransfer(huart); - } - - /* Stop UART DMA Rx request if ongoing */ - if ( (huart->RxState == HAL_UART_STATE_BUSY_RX) - &&(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) ) - { - UART_EndRxTransfer(huart); - } - SET_BIT(huart->ErrorCode, HAL_UART_ERROR_DMA); - HAL_UART_ErrorCallback(huart); -} - -/** - * @brief DMA UART communication abort callback, when call 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 UART_DMAAbortOnError(DMA_HandleTypeDef *hdma) -{ - UART_HandleTypeDef* huart = (UART_HandleTypeDef*)(hdma->Parent); - huart->RxXferCount = 0U; - huart->TxXferCount = 0U; - - HAL_UART_ErrorCallback(huart); -} - -/** - * @brief Tx Transfer completed callbacks - * @param huart: uart handle - * @retval None - */ - __weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(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 callbacks. - * @param huart: UART handle - * @retval None - */ - __weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(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 callbacks - * @param huart: uart handle - * @retval None - */ -__weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(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 callbacks. - * @param huart: UART handle - * @retval None - */ -__weak void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(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 callbacks - * @param huart: uart handle - * @retval None - */ - __weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(huart); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_UART_ErrorCallback can be implemented in the user file - */ -} - -/** - * @brief Send an amount of data in interrupt mode - * Function 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; - - /* Check that a Tx process is ongoing */ - if (huart->gState == HAL_UART_STATE_BUSY_TX) - { - - if(huart->TxXferCount == 0U) - { - /* Disable the UART Transmit Data Register Empty Interrupt */ - CLEAR_BIT(huart->Instance->CR1, USART_CR1_TXEIE); - - /* Enable the UART Transmit Complete Interrupt */ - SET_BIT(huart->Instance->CR1, USART_CR1_TCIE); - - 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)0x01FFU); - huart->pTxBuffPtr += 2U; - } - else - { - huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0xFFU); - } - - 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 */ - CLEAR_BIT(huart->Instance->CR1, USART_CR1_TCIE); - - /* Tx process is ended, restore huart->gState to Ready */ - huart->gState = HAL_UART_STATE_READY; - - HAL_UART_TxCpltCallback(huart); - - return HAL_OK; -} - -/** - * @brief Receive an amount of data in interrupt mode - * Function 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; - - /* Check that a Rx process is ongoing */ - if(huart->RxState == HAL_UART_STATE_BUSY_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) - { - /* Disable the UART Parity Error Interrupt and RXNE interrupt*/ - CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); - - /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */ - CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); - - /* Rx process is completed, restore huart->RxState to Ready */ - huart->RxState = HAL_UART_STATE_READY; - - HAL_UART_RxCpltCallback(huart); - - return HAL_OK; - } - - return HAL_OK; - } - else - { - /* Clear RXNE interrupt flag */ - __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST); - - return HAL_BUSY; - } -} - -/** - * @brief End ongoing Tx transfer on UART peripheral (following error detection or Transmit completion). - * @param huart: UART handle. - * @retval None - */ -static void UART_EndTxTransfer(UART_HandleTypeDef *huart) -{ - /* Disable TXEIE and TCIE interrupts */ - CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE)); - - /* At end of Tx process, restore huart->gState to Ready */ - huart->gState = HAL_UART_STATE_READY; -} - - -/** - * @brief End ongoing Rx transfer on UART peripheral (following error detection or Reception completion). - * @param huart: UART handle. - * @retval None - */ -static void UART_EndRxTransfer(UART_HandleTypeDef *huart) -{ - /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ - CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); - CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); - - /* At end of Rx process, restore huart->RxState to Ready */ - huart->RxState = HAL_UART_STATE_READY; -} - -/** - * @} - */ - -/** @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_UART_GetState() API is helpful to check in run-time the state of the UART peripheral. - (+) 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 - (+) 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 - (+) HAL_MultiProcessorEx_AddressLength_Set() API optionally sets the UART node address - detection length to more than 4 bits for multiprocessor address mark wake up. -@endverbatim - * @{ - */ - -/** - * @brief Enable UART in mute mode (doesn't 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->gState = HAL_UART_STATE_BUSY; - - /* Enable USART mute mode by setting the MME bit in the CR1 register */ - SET_BIT(huart->Instance->CR1, USART_CR1_MME); - - huart->gState = HAL_UART_STATE_READY; - - return (UART_CheckIdleState(huart)); -} - -/** - * @brief Disable UART mute mode (doesn't mean it actually wakes up the software, - * 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->gState = HAL_UART_STATE_BUSY; - - /* Disable USART mute mode by clearing the MME bit in the CR1 register */ - CLEAR_BIT(huart->Instance->CR1, USART_CR1_MME); - - huart->gState = HAL_UART_STATE_READY; - - return (UART_CheckIdleState(huart)); -} - -/** - * @brief Enter UART mute mode (means UART actually enters mute mode). - * To exit from mute mode, HAL_MultiProcessor_DisableMuteMode() API must be called. - * @param huart: uart handle - * @retval HAL status - */ -void HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart) -{ - __HAL_UART_SEND_REQ(huart, UART_MUTE_MODE_REQUEST); -} - - - -/** - * @brief return the UART state - * @param huart: uart handle - * @retval HAL state - */ -HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart) -{ - uint32_t temp1= 0x00U, temp2 = 0x00U; - temp1 = huart->gState; - temp2 = huart->RxState; - - return (HAL_UART_StateTypeDef)(temp1 | temp2); -} - -/** -* @brief Return the UART 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; -} - -/** - * @brief Configure the UART peripheral - * @param huart: uart handle - * @retval None - */ -HAL_StatusTypeDef UART_SetConfig(UART_HandleTypeDef *huart) -{ - uint32_t tmpreg = 0x00000000U; - UART_ClockSourceTypeDef clocksource = UART_CLOCKSOURCE_UNDEFINED; - uint16_t brrtemp = 0x0000U; - uint16_t usartdiv = 0x0000U; - 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)); - assert_param(IS_UART_STOPBITS(huart->Init.StopBits)); - 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_ONE_BIT_SAMPLE(huart->Init.OneBitSampling)); - - - /*-------------------------- 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 */ - tmpreg = (uint32_t)huart->Init.HwFlowCtl | 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 UART Over Sampling to set Baud Rate Register */ - 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 & 0xFFF0U; - brrtemp |= (uint16_t)((usartdiv & (uint16_t)0x000FU) >> 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_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) -{ - uint32_t tickstart = 0U; - - /* Initialize the UART ErrorCode */ - huart->ErrorCode = HAL_UART_ERROR_NONE; - - /* Init tickstart for timeout managment*/ - tickstart = HAL_GetTick(); - - /* 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, tickstart, 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, tickstart, HAL_UART_TIMEOUT_VALUE) != HAL_OK) - { - /* Timeout Occurred */ - return HAL_TIMEOUT; - } - } - - /* Initialize the UART State */ - huart->gState= HAL_UART_STATE_READY; - huart->RxState= HAL_UART_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(huart); - - return HAL_OK; -} - -/** - * @brief Enables the UART transmitter and disables the UART receiver. - * @param huart: UART handle - * @retval HAL status - * @retval None - */ -HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart) -{ - /* Process Locked */ - __HAL_LOCK(huart); - huart->gState = 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->gState= HAL_UART_STATE_READY; - /* Process Unlocked */ - __HAL_UNLOCK(huart); - - return HAL_OK; -} - -/** - * @brief Enables the UART receiver and disables the UART transmitter. - * @param huart: UART handle - * @retval HAL status - */ -HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart) -{ - /* Process Locked */ - __HAL_LOCK(huart); - huart->gState = 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->gState = HAL_UART_STATE_READY; - /* Process Unlocked */ - __HAL_UNLOCK(huart); - - return HAL_OK; -} - - -/** - * @brief Transmits 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->gState = HAL_UART_STATE_BUSY; - - /* Send break characters */ - SET_BIT(huart->Instance->RQR, UART_SENDBREAK_REQUEST); - - huart->gState = HAL_UART_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(huart); - - return HAL_OK; -} - -/** - * @brief By default in multiprocessor mode, when the wake up method is set - * to address mark, the UART handles only 4-bit long addresses detection; - * this API allows to enable longer addresses detection (6-, 7- or 8-bit - * long). - * @note Addresses detection lengths are: 6-bit address detection in 7-bit data mode, - * 7-bit address detection in 8-bit data mode, 8-bit address detection in 9-bit data mode. - * @param huart: UART handle. - * @param AddressLength: this parameter can be one of the following values: - * @arg @ref UART_ADDRESS_DETECT_4B 4-bit long address - * @arg @ref UART_ADDRESS_DETECT_7B 6-, 7- or 8-bit long address - * @retval HAL status - */ -HAL_StatusTypeDef HAL_MultiProcessorEx_AddressLength_Set(UART_HandleTypeDef *huart, uint32_t AddressLength) -{ - /* Check the UART handle allocation */ - if(huart == NULL) - { - return HAL_ERROR; - } - - /* Check the address length parameter */ - assert_param(IS_UART_ADDRESSLENGTH_DETECT(AddressLength)); - - huart->gState = HAL_UART_STATE_BUSY; - - /* Disable the Peripheral */ - __HAL_UART_DISABLE(huart); - - /* Set the address length */ - MODIFY_REG(huart->Instance->CR2, USART_CR2_ADDM7, AddressLength); - - /* Enable the Peripheral */ - __HAL_UART_ENABLE(huart); - - /* TEACK and/or REACK to check before moving huart->gState to Ready */ - return (UART_CheckIdleState(huart)); -} - -/** - * @} - */ - -/** - * @} - */ - -#endif /* HAL_UART_MODULE_ENABLED */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |