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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_usart.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_usart.c | 1796 |
1 files changed, 0 insertions, 1796 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_usart.c b/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_usart.c deleted file mode 100644 index 6a93cec953..0000000000 --- a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_usart.c +++ /dev/null @@ -1,1796 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f7xx_hal_usart.c - * @author MCD Application Team - * @version V1.0.1 - * @date 25-June-2015 - * @brief USART HAL module driver. - * This file provides firmware functions to manage the following - * functionalities of the Universal Synchronous/Asynchronous Receiver Transmitter - * Peripheral (USART). - * + Initialization and de-initialization functions - * + IO operation functions - * + Peripheral Control functions - * - @verbatim - =============================================================================== - ##### How to use this driver ##### - =============================================================================== - [..] - The USART HAL driver can be used as follows: - - (#) Declare a USART_HandleTypeDef handle structure. - (#) Initialize the USART low level resources by implement the HAL_USART_MspInit ()API: - (##) Enable the USARTx interface clock. - (##) USART pins configuration: - (+++) Enable the clock for the USART GPIOs. - (+++) Configure these USART pins as alternate function pull-up. - (##) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(), - HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs): - (+++) Configure the USARTx interrupt priority. - (+++) Enable the NVIC USART IRQ handle. - (+++) The specific USART interrupts (Transmission complete interrupt, - RXNE interrupt and Error Interrupts) will be managed using the macros - __HAL_USART_ENABLE_IT() and __HAL_USART_DISABLE_IT() inside the transmit and receive process. - (##) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA() - HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs): - (+++) Declare a DMA handle structure for the Tx/Rx stream. - (+++) Enable the DMAx interface clock. - (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters. - (+++) Configure the DMA Tx/Rx Stream. - (+++) Associate the initialized DMA handle to the USART DMA Tx/Rx handle. - (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx Stream. - - (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware - flow control and Mode(Receiver/Transmitter) in the husart Init structure. - - (#) Initialize the USART registers by calling the HAL_USART_Init() API: - (++) These API's configures also the low level Hardware (GPIO, CLOCK, CORTEX...etc) - by calling the customed HAL_USART_MspInit(&husart) 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 "stm32f7xx_hal.h" - -/** @addtogroup STM32F7xx_HAL_Driver - * @{ - */ - -/** @defgroup USART USART - * @brief HAL USART Synchronous module driver - * @{ - */ - -#ifdef HAL_USART_MODULE_ENABLED - -/* Private typedef -----------------------------------------------------------*/ -/* Private define ------------------------------------------------------------*/ -/** @addtogroup USART_Private_Constants - * @{ - */ -#define DUMMY_DATA ((uint16_t) 0xFFFF) -#define TEACK_REACK_TIMEOUT ((uint32_t) 1000) -#define USART_TXDMA_TIMEOUTVALUE 22000 -#define USART_TIMEOUT_VALUE 22000 -#define USART_CR1_FIELDS ((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | \ - USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8)) -#define USART_CR2_FIELDS ((uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | \ - USART_CR2_CLKEN | USART_CR2_LBCL | USART_CR2_STOP)) -/** - * @} - */ -/* Private macro -------------------------------------------------------------*/ -/* Private variables ---------------------------------------------------------*/ -/* Private function prototypes -----------------------------------------------*/ -/* Private functions ---------------------------------------------------------*/ -/** @addtogroup USART_Private_Functions - * @{ - */ -static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma); -static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma); -static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma); -static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma); -static void USART_DMAError(DMA_HandleTypeDef *hdma); -static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Timeout); -static HAL_StatusTypeDef USART_SetConfig(USART_HandleTypeDef *husart); -static HAL_StatusTypeDef USART_CheckIdleState(USART_HandleTypeDef *husart); -static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart); -static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart); -static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart); -static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart); -/** - * @} - */ - -/* Exported functions --------------------------------------------------------*/ - -/** @defgroup USART_Exported_Functions USART Exported Functions - * @{ - */ - -/** @defgroup USART_Exported_Functions_Group1 USART Initialization and de-initialization functions - * @brief Initialization and Configuration functions - * -@verbatim - =============================================================================== - ##### Initialization and Configuration functions ##### - =============================================================================== - [..] - This subsection provides a set of functions allowing to initialize the USART - in asynchronous and in synchronous modes. - (+) For the asynchronous mode only these parameters can be configured: - (++) Baud Rate - (++) Word Length - (++) Stop Bit - (++) Parity: If the parity is enabled, then the MSB bit of the data written - in the data register is transmitted but is changed by the parity bit. - Depending on the frame length defined by the M1 and M0 bits (7-bit, - 8-bit or 9-bit), the possible USART frame formats are as listed in the - following table: - - (+++) +---------------------------------------------------------------+ - (+++) | M1M0 bits | PCE bit | USART frame | - (+++) |-----------------------|---------------------------------------| - (+++) | 10 | 0 | | SB | 7-bit data | STB | | - (+++) |-----------|-----------|---------------------------------------| - (+++) | 10 | 1 | | SB | 6-bit data | PB | STB | | - (+++) +---------------------------------------------------------------+ - - (++) USART polarity - (++) USART phase - (++) USART LastBit - (++) Receiver/transmitter modes - - [..] - The HAL_USART_Init() function follows the USART synchronous configuration - procedure (details for the procedure are available in reference manual). - -@endverbatim - * @{ - */ - -/** - * @brief Initializes the USART mode according to the specified - * parameters in the USART_InitTypeDef and create the associated handle. - * @param husart: USART handle - * @retval HAL status - */ -HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart) -{ - /* Check the USART handle allocation */ - if(husart == NULL) - { - return HAL_ERROR; - } - - /* Check the parameters */ - assert_param(IS_USART_INSTANCE(husart->Instance)); - - if(husart->State == HAL_USART_STATE_RESET) - { - /* Allocate lock resource and initialize it */ - husart->Lock = HAL_UNLOCKED; - /* Init the low level hardware : GPIO, CLOCK */ - HAL_USART_MspInit(husart); - } - - husart->State = HAL_USART_STATE_BUSY; - - /* Disable the Peripheral */ - __HAL_USART_DISABLE(husart); - - /* Set the Usart Communication parameters */ - if (USART_SetConfig(husart) == HAL_ERROR) - { - return HAL_ERROR; - } - - /* In Synchronous mode, the following bits must be kept cleared: - - LINEN bit in the USART_CR2 register - - HDSEL, SCEN and IREN bits in the USART_CR3 register.*/ - husart->Instance->CR2 &= ~USART_CR2_LINEN; - husart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN); - - /* Enable the Peripheral */ - __HAL_USART_ENABLE(husart); - - /* TEACK and/or REACK to check before moving husart->State to Ready */ - return (USART_CheckIdleState(husart)); -} - -/** - * @brief DeInitializes the USART peripheral - * @param husart: USART handle - * @retval HAL status - */ -HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart) -{ - /* Check the USART handle allocation */ - if(husart == NULL) - { - return HAL_ERROR; - } - - /* Check the parameters */ - assert_param(IS_USART_INSTANCE(husart->Instance)); - - husart->State = HAL_USART_STATE_BUSY; - - husart->Instance->CR1 = 0x0; - husart->Instance->CR2 = 0x0; - husart->Instance->CR3 = 0x0; - - /* DeInit the low level hardware */ - HAL_USART_MspDeInit(husart); - - husart->ErrorCode = HAL_USART_ERROR_NONE; - husart->State = HAL_USART_STATE_RESET; - - /* Process Unlock */ - __HAL_UNLOCK(husart); - - return HAL_OK; -} - -/** - * @brief USART MSP Init - * @param husart: USART handle - * @retval None - */ - __weak void HAL_USART_MspInit(USART_HandleTypeDef *husart) -{ - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_USART_MspInit can be implemented in the user file - */ -} - -/** - * @brief USART MSP DeInit - * @param husart: USART handle - * @retval None - */ - __weak void HAL_USART_MspDeInit(USART_HandleTypeDef *husart) -{ - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_USART_MspDeInit can be implemented in the user file - */ -} - -/** - * @} - */ - -/** @defgroup USART_Exported_Functions_Group2 IO operation functions - * @brief USART Transmit and Receive functions - * -@verbatim - =============================================================================== - ##### IO operation functions ##### - =============================================================================== - This subsection provides a set of functions allowing to manage the USART synchronous - data transfers. - - [..] The USART supports master mode only: it cannot receive or send data related to an input - clock (SCLK is always an output). - - (#) There are two 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 USART IRQ when using Interrupt mode or the DMA IRQ when - using DMA mode. - The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback() user callbacks - will be executed respectively at the end of the transmit or Receive process - The HAL_USART_ErrorCallback()user callback will be executed when a communication error is detected - - (#) Blocking mode API's are : - (++) HAL_USART_Transmit()in simplex mode - (++) HAL_USART_Receive() in full duplex receive only - (++) HAL_USART_TransmitReceive() in full duplex mode - - (#) Non-Blocking mode API's with Interrupt are : - (++) HAL_USART_Transmit_IT()in simplex mode - (++) HAL_USART_Receive_IT() in full duplex receive only - (++) HAL_USART_TransmitReceive_IT()in full duplex mode - (++) HAL_USART_IRQHandler() - - (#) No-Blocking mode functions with DMA are : - (++) HAL_USART_Transmit_DMA()in simplex mode - (++) HAL_USART_Receive_DMA() in full duplex receive only - (++) HAL_USART_TransmitReceive_DMA() in full duplex mode - (++) HAL_USART_DMAPause() - (++) HAL_USART_DMAResume() - (++) HAL_USART_DMAStop() - - (#) A set of Transfer Complete Callbacks are provided in No_Blocking mode: - (++) HAL_USART_TxCpltCallback() - (++) HAL_USART_RxCpltCallback() - (++) HAL_USART_TxHalfCpltCallback() - (++) HAL_USART_RxHalfCpltCallback() - (++) HAL_USART_ErrorCallback() - (++) HAL_USART_TxRxCpltCallback() - -@endverbatim - * @{ - */ - -/** - * @brief Simplex Send an amount of data in blocking mode - * @param husart: USART handle - * @param pTxData: pointer to data buffer - * @param Size: amount of data to be sent - * @param Timeout : Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout) -{ - uint16_t* tmp; - - if(husart->State == HAL_USART_STATE_READY) - { - if((pTxData == NULL) || (Size == 0)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(husart); - - husart->ErrorCode = HAL_USART_ERROR_NONE; - husart->State = HAL_USART_STATE_BUSY_TX; - - husart->TxXferSize = Size; - husart->TxXferCount = Size; - - /* Check the remaining data to be sent */ - while(husart->TxXferCount > 0) - { - husart->TxXferCount--; - if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) - { - tmp = (uint16_t*) pTxData; - husart->Instance->TDR = (*tmp & (uint16_t)0x01FF); - pTxData += 2; - } - else - { - husart->Instance->TDR = (*pTxData++ & (uint8_t)0xFF); - } - } - - if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - - husart->State = HAL_USART_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Receive an amount of data in blocking mode - * @note To receive synchronous data, dummy data are simultaneously transmitted - * @param husart: USART handle - * @param pRxData: pointer to data buffer - * @param Size: amount of data to be received - * @param Timeout : Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout) -{ - uint16_t* tmp; - uint16_t uhMask; - - if(husart->State == HAL_USART_STATE_READY) - { - if((pRxData == NULL) || (Size == 0)) - { - return HAL_ERROR; - } - /* Process Locked */ - __HAL_LOCK(husart); - - husart->ErrorCode = HAL_USART_ERROR_NONE; - husart->State = HAL_USART_STATE_BUSY_RX; - - husart->RxXferSize = Size; - husart->RxXferCount = Size; - - /* Computation of USART mask to apply to RDR register */ - __HAL_USART_MASK_COMPUTATION(husart); - uhMask = husart->Mask; - - /* as long as data have to be received */ - while(husart->RxXferCount > 0) - { - husart->RxXferCount--; - - /* Wait until TC flag is set to send dummy byte in order to generate the - * clock for the slave to send data. - * Whatever the frame length (7, 8 or 9-bit long), the same dummy value - * can be written for all the cases. */ - if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - husart->Instance->TDR = (DUMMY_DATA & (uint16_t)0x0FF); - - /* Wait for RXNE Flag */ - if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - - if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) - { - tmp = (uint16_t*) pRxData ; - *tmp = (uint16_t)(husart->Instance->RDR & uhMask); - pRxData +=2; - } - else - { - *pRxData++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask); - } - } - - husart->State = HAL_USART_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Full-Duplex Send and Receive an amount of data in blocking mode - * @param husart: USART handle - * @param pTxData: pointer to TX data buffer - * @param pRxData: pointer to RX data buffer - * @param Size: amount of data to be sent (same amount to be received) - * @param Timeout : Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout) -{ - uint16_t* tmp; - uint16_t uhMask; - - if(husart->State == HAL_USART_STATE_READY) - { - if((pTxData == NULL) || (pRxData == NULL) || (Size == 0)) - { - return HAL_ERROR; - } - /* Process Locked */ - __HAL_LOCK(husart); - - husart->ErrorCode = HAL_USART_ERROR_NONE; - husart->State = HAL_USART_STATE_BUSY_RX; - - husart->RxXferSize = Size; - husart->TxXferSize = Size; - husart->TxXferCount = Size; - husart->RxXferCount = Size; - - /* Computation of USART mask to apply to RDR register */ - __HAL_USART_MASK_COMPUTATION(husart); - uhMask = husart->Mask; - - /* Check the remain data to be sent */ - while(husart->TxXferCount > 0) - { - husart->TxXferCount--; - husart->RxXferCount--; - - /* Wait until TC flag is set to send data */ - if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) - { - tmp = (uint16_t*) pTxData; - husart->Instance->TDR = (*tmp & uhMask); - pTxData += 2; - } - else - { - husart->Instance->TDR = (*pTxData++ & (uint8_t)uhMask); - } - - /* Wait for RXNE Flag */ - if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - - if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) - { - tmp = (uint16_t*) pRxData ; - *tmp = (uint16_t)(husart->Instance->RDR & uhMask); - pRxData +=2; - } - else - { - *pRxData++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask); - } - } - - husart->State = HAL_USART_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Send an amount of data in interrupt mode - * @param husart: USART handle - * @param pTxData: pointer to data buffer - * @param Size: amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size) -{ - if(husart->State == HAL_USART_STATE_READY) - { - if((pTxData == NULL ) || (Size == 0)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(husart); - - husart->pTxBuffPtr = pTxData; - husart->TxXferSize = Size; - husart->TxXferCount = Size; - - husart->ErrorCode = HAL_USART_ERROR_NONE; - husart->State = HAL_USART_STATE_BUSY_TX; - - /* The USART Error Interrupts: (Frame error, noise error, overrun error) - are not managed by the USART Transmit Process to avoid the overrun interrupt - when the usart mode is configured for transmit and receive "USART_MODE_TX_RX" - to benefit for the frame error and noise interrupts the usart mode should be - configured only for transmit "USART_MODE_TX" */ - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - /* Enable the USART Transmit Data Register Empty Interrupt */ - __HAL_USART_ENABLE_IT(husart, USART_IT_TXE); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Receive an amount of data in blocking mode - * To receive synchronous data, dummy data are simultaneously transmitted - * @param husart: USART handle - * @param pRxData: pointer to data buffer - * @param Size: amount of data to be received - * @retval HAL status - */ -HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size) -{ - if(husart->State == HAL_USART_STATE_READY) - { - if((pRxData == NULL ) || (Size == 0)) - { - return HAL_ERROR; - } - /* Process Locked */ - __HAL_LOCK(husart); - - husart->pRxBuffPtr = pRxData; - husart->RxXferSize = Size; - husart->RxXferCount = Size; - - __HAL_USART_MASK_COMPUTATION(husart); - - husart->ErrorCode = HAL_USART_ERROR_NONE; - husart->State = HAL_USART_STATE_BUSY_RX; - - /* Enable the USART Parity Error Interrupt */ - __HAL_USART_ENABLE_IT(husart, USART_IT_PE); - - /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ - __HAL_USART_ENABLE_IT(husart, USART_IT_ERR); - - /* Enable the USART Data Register not empty Interrupt */ - __HAL_USART_ENABLE_IT(husart, USART_IT_RXNE); - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - - /* Send dummy byte in order to generate the clock for the Slave to send the next data */ - if(husart->Init.WordLength == USART_WORDLENGTH_9B) - { - husart->Instance->TDR = (DUMMY_DATA & (uint16_t)0x01FF); - } - else - { - husart->Instance->TDR = (DUMMY_DATA & (uint16_t)0x00FF); - } - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Full-Duplex Send and Receive an amount of data in interrupt mode - * @param husart: USART handle - * @param pTxData: pointer to TX data buffer - * @param pRxData: pointer to RX data buffer - * @param Size: amount of data to be sent (same amount to be received) - * @retval HAL status - */ -HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size) -{ - - if(husart->State == HAL_USART_STATE_READY) - { - if((pTxData == NULL) || (pRxData == NULL) || (Size == 0)) - { - return HAL_ERROR; - } - /* Process Locked */ - __HAL_LOCK(husart); - - husart->pRxBuffPtr = pRxData; - husart->RxXferSize = Size; - husart->RxXferCount = Size; - husart->pTxBuffPtr = pTxData; - husart->TxXferSize = Size; - husart->TxXferCount = Size; - - /* Computation of USART mask to apply to RDR register */ - __HAL_USART_MASK_COMPUTATION(husart); - - husart->ErrorCode = HAL_USART_ERROR_NONE; - husart->State = HAL_USART_STATE_BUSY_TX_RX; - - /* Enable the USART Data Register not empty Interrupt */ - __HAL_USART_ENABLE_IT(husart, USART_IT_RXNE); - - /* Enable the USART Parity Error Interrupt */ - __HAL_USART_ENABLE_IT(husart, USART_IT_PE); - - /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ - __HAL_USART_ENABLE_IT(husart, USART_IT_ERR); - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - /* Enable the USART Transmit Data Register Empty Interrupt */ - __HAL_USART_ENABLE_IT(husart, USART_IT_TXE); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } - -} - -/** - * @brief Send an amount of data in DMA mode - * @param husart: USART handle - * @param pTxData: pointer to data buffer - * @param Size: amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size) -{ - uint32_t *tmp; - - if(husart->State == HAL_USART_STATE_READY) - { - if((pTxData == NULL ) || (Size == 0)) - { - return HAL_ERROR; - } - /* Process Locked */ - __HAL_LOCK(husart); - - husart->pTxBuffPtr = pTxData; - husart->TxXferSize = Size; - husart->TxXferCount = Size; - - husart->ErrorCode = HAL_USART_ERROR_NONE; - husart->State = HAL_USART_STATE_BUSY_TX; - - /* Set the USART DMA transfer complete callback */ - husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt; - - /* Set the USART DMA Half transfer complete callback */ - husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt; - - /* Set the DMA error callback */ - husart->hdmatx->XferErrorCallback = USART_DMAError; - - /* Enable the USART transmit DMA channel */ - tmp = (uint32_t*)&pTxData; - HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->TDR, Size); - - - /* Clear the TC flag in the SR register by writing 0 to it */ - __HAL_USART_CLEAR_IT(husart, USART_FLAG_TC); - - /* Enable the DMA transfer for transmit request by setting the DMAT bit - in the USART CR3 register */ - husart->Instance->CR3 |= USART_CR3_DMAT; - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Receive an amount of data in DMA mode - * @param husart: USART handle - * @param pRxData: pointer to data buffer - * @param Size: amount of data to be received - * @note When the USART parity is enabled (PCE = 1), the received data contain - * the parity bit (MSB position) - * @retval HAL status - * @note The USART DMA transmit stream must be configured in order to generate the clock for the slave. - */ -HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size) -{ - uint32_t *tmp; - - if(husart->State == HAL_USART_STATE_READY) - { - if((pRxData == NULL ) || (Size == 0)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(husart); - - husart->pRxBuffPtr = pRxData; - husart->RxXferSize = Size; - husart->pTxBuffPtr = pRxData; - husart->TxXferSize = Size; - - husart->ErrorCode = HAL_USART_ERROR_NONE; - husart->State = HAL_USART_STATE_BUSY_RX; - - /* Set the USART DMA Rx transfer complete callback */ - husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt; - - /* Set the USART DMA Half transfer complete callback */ - husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt; - - /* Set the USART DMA Rx transfer error callback */ - husart->hdmarx->XferErrorCallback = USART_DMAError; - - /* Enable the USART receive DMA channel */ - tmp = (uint32_t*)&pRxData; - HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->RDR, *(uint32_t*)tmp, Size); - - /* Enable the USART transmit DMA channel: the transmit stream is used in order - to generate in the non-blocking mode the clock to the slave device, - this mode isn't a simplex receive mode but a full-duplex receive mode */ - tmp = (uint32_t*)&pRxData; - HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->TDR, Size); - - /* Enable the DMA transfer for the receiver request by setting the DMAR bit - in the USART CR3 register */ - husart->Instance->CR3 |= USART_CR3_DMAR; - - /* Enable the DMA transfer for transmit request by setting the DMAT bit - in the USART CR3 register */ - husart->Instance->CR3 |= USART_CR3_DMAT; - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Full-Duplex Transmit Receive an amount of data in non blocking mode - * @param husart: USART handle - * @param pTxData: pointer to TX data buffer - * @param pRxData: pointer to RX data buffer - * @param Size: amount of data to be received/sent - * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size) -{ - uint32_t *tmp; - - if(husart->State == HAL_USART_STATE_READY) - { - if((pTxData == NULL) || (pRxData == NULL) || (Size == 0)) - { - return HAL_ERROR; - } - /* Process Locked */ - __HAL_LOCK(husart); - - husart->pRxBuffPtr = pRxData; - husart->RxXferSize = Size; - husart->pTxBuffPtr = pTxData; - husart->TxXferSize = Size; - - husart->ErrorCode = HAL_USART_ERROR_NONE; - husart->State = HAL_USART_STATE_BUSY_TX_RX; - - /* Set the USART DMA Rx transfer complete callback */ - husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt; - - /* Set the USART DMA Half transfer complete callback */ - husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt; - - /* Set the USART DMA Tx transfer complete callback */ - husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt; - - /* Set the USART DMA Half transfer complete callback */ - husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt; - - /* Set the USART DMA Tx transfer error callback */ - husart->hdmatx->XferErrorCallback = USART_DMAError; - - /* Set the USART DMA Rx transfer error callback */ - husart->hdmarx->XferErrorCallback = USART_DMAError; - - /* Enable the USART receive DMA channel */ - tmp = (uint32_t*)&pRxData; - HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->RDR, *(uint32_t*)tmp, Size); - - /* Enable the USART transmit DMA channel */ - tmp = (uint32_t*)&pTxData; - HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->TDR, Size); - - /* Clear the TC flag in the SR register by writing 0 to it */ - __HAL_USART_CLEAR_IT(husart, USART_FLAG_TC); - - /* Enable the DMA transfer for the receiver request by setting the DMAR bit - in the USART CR3 register */ - husart->Instance->CR3 |= USART_CR3_DMAR; - - /* Enable the DMA transfer for transmit request by setting the DMAT bit - in the USART CR3 register */ - husart->Instance->CR3 |= USART_CR3_DMAT; - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Pauses the DMA Transfer. - * @param husart: USART handle - * @retval None - */ -HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart) -{ - /* Process Locked */ - __HAL_LOCK(husart); - - if(husart->State == HAL_USART_STATE_BUSY_TX) - { - /* Disable the USART DMA Tx request */ - husart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT); - } - else if(husart->State == HAL_USART_STATE_BUSY_RX) - { - /* Disable the USART DMA Rx request */ - husart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR); - } - else if(husart->State == HAL_USART_STATE_BUSY_TX_RX) - { - /* Disable the USART DMA Tx request */ - husart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT); - /* Disable the USART DMA Rx request */ - husart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR); - } - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - return HAL_OK; -} - -/** - * @brief Resumes the DMA Transfer. - * @param husart: USART handle - * @retval None - */ -HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart) -{ - /* Process Locked */ - __HAL_LOCK(husart); - - if(husart->State == HAL_USART_STATE_BUSY_TX) - { - /* Enable the USART DMA Tx request */ - husart->Instance->CR3 |= USART_CR3_DMAT; - } - else if(husart->State == HAL_USART_STATE_BUSY_RX) - { - /* Clear the Overrun flag before resuming the Rx transfer*/ - __HAL_USART_CLEAR_IT(husart, USART_CLEAR_OREF); - - /* Enable the USART DMA Rx request */ - husart->Instance->CR3 |= USART_CR3_DMAR; - } - else if(husart->State == HAL_USART_STATE_BUSY_TX_RX) - { - /* Clear the Overrun flag before resuming the Rx transfer*/ - __HAL_USART_CLEAR_IT(husart, USART_CLEAR_OREF); - - /* Enable the USART DMA Rx request before the DMA Tx request */ - husart->Instance->CR3 |= USART_CR3_DMAR; - - /* Enable the USART DMA Tx request */ - husart->Instance->CR3 |= USART_CR3_DMAT; - } - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - return HAL_OK; -} - -/** - * @brief Stops the DMA Transfer. - * @param husart: USART handle - * @retval None - */ -HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart) -{ - /* The Lock is not implemented on this API to allow the user application - to call the HAL USART API under callbacks HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback() / - HAL_USART_TxHalfCpltCallback / HAL_USART_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 USART Tx/Rx DMA requests */ - husart->Instance->CR3 &= ~USART_CR3_DMAT; - husart->Instance->CR3 &= ~USART_CR3_DMAR; - - /* Abort the USART DMA tx Stream */ - if(husart->hdmatx != NULL) - { - HAL_DMA_Abort(husart->hdmatx); - } - /* Abort the USART DMA rx Stream */ - if(husart->hdmarx != NULL) - { - HAL_DMA_Abort(husart->hdmarx); - } - - husart->State = HAL_USART_STATE_READY; - - return HAL_OK; -} - -/** - * @brief This function handles USART interrupt request. - * @param husart: USART handle - * @retval None - */ -void HAL_USART_IRQHandler(USART_HandleTypeDef *husart) -{ - - /* USART parity error interrupt occurred ------------------------------------*/ - if((__HAL_USART_GET_IT(husart, USART_IT_PE) != RESET) && (__HAL_USART_GET_IT_SOURCE(husart, USART_IT_PE) != RESET)) - { - __HAL_USART_CLEAR_IT(husart, USART_CLEAR_PEF); - husart->ErrorCode |= HAL_USART_ERROR_PE; - /* Set the USART state ready to be able to start again the process */ - husart->State = HAL_USART_STATE_READY; - } - - /* USART frame error interrupt occurred -------------------------------------*/ - if((__HAL_USART_GET_IT(husart, USART_IT_FE) != RESET) && (__HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR) != RESET)) - { - __HAL_USART_CLEAR_IT(husart, USART_CLEAR_FEF); - husart->ErrorCode |= HAL_USART_ERROR_FE; - /* Set the USART state ready to be able to start again the process */ - husart->State = HAL_USART_STATE_READY; - } - - /* USART noise error interrupt occurred -------------------------------------*/ - if((__HAL_USART_GET_IT(husart, USART_IT_NE) != RESET) && (__HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR) != RESET)) - { - __HAL_USART_CLEAR_IT(husart, USART_CLEAR_NEF); - husart->ErrorCode |= HAL_USART_ERROR_NE; - /* Set the USART state ready to be able to start again the process */ - husart->State = HAL_USART_STATE_READY; - } - - /* USART Over-Run interrupt occurred ----------------------------------------*/ - if((__HAL_USART_GET_IT(husart, USART_IT_ORE) != RESET) && (__HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR) != RESET)) - { - __HAL_USART_CLEAR_IT(husart, USART_CLEAR_OREF); - husart->ErrorCode |= HAL_USART_ERROR_ORE; - /* Set the USART state ready to be able to start again the process */ - husart->State = HAL_USART_STATE_READY; - } - - /* Call USART Error Call back function if need be --------------------------*/ - if(husart->ErrorCode != HAL_USART_ERROR_NONE) - { - HAL_USART_ErrorCallback(husart); - } - - /* USART in mode Receiver --------------------------------------------------*/ - if((__HAL_USART_GET_IT(husart, USART_IT_RXNE) != RESET) && (__HAL_USART_GET_IT_SOURCE(husart, USART_IT_RXNE) != RESET)) - { - if(husart->State == HAL_USART_STATE_BUSY_RX) - { - USART_Receive_IT(husart); - } - else - { - USART_TransmitReceive_IT(husart); - } - } - - /* USART in mode Transmitter -----------------------------------------------*/ - if((__HAL_USART_GET_IT(husart, USART_IT_TXE) != RESET) &&(__HAL_USART_GET_IT_SOURCE(husart, USART_IT_TXE) != RESET)) - { - if(husart->State == HAL_USART_STATE_BUSY_TX) - { - USART_Transmit_IT(husart); - } - else - { - USART_TransmitReceive_IT(husart); - } - } - - /* USART in mode Transmitter (transmission end) -----------------------------*/ - if((__HAL_USART_GET_IT(husart, USART_IT_TC) != RESET) &&(__HAL_USART_GET_IT_SOURCE(husart, USART_IT_TC) != RESET)) - { - USART_EndTransmit_IT(husart); - } - -} - -/** - * @brief Tx Transfer completed callbacks - * @param husart: USART handle - * @retval None - */ -__weak void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart) -{ - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_USART_TxCpltCallback can be implemented in the user file - */ -} - -/** - * @brief Tx Half Transfer completed callbacks. - * @param husart: USART handle - * @retval None - */ - __weak void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart) -{ - /* NOTE: This function should not be modified, when the callback is needed, - the HAL_USART_TxHalfCpltCallback can be implemented in the user file - */ -} - -/** - * @brief Rx Transfer completed callbacks. - * @param husart: USART handle - * @retval None - */ -__weak void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart) -{ - /* NOTE: This function should not be modified, when the callback is needed, - the HAL_USART_RxCpltCallback can be implemented in the user file - */ -} - -/** - * @brief Rx Half Transfer completed callbacks - * @param husart: usart handle - * @retval None - */ -__weak void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart) -{ - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_USART_RxHalfCpltCallback can be implemented in the user file - */ -} - -/** - * @brief Tx/Rx Transfers completed callback for the non-blocking process - * @param husart: USART handle - * @retval None - */ -__weak void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart) -{ - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_USART_TxRxCpltCallback can be implemented in the user file - */ -} - -/** - * @brief USART error callbacks - * @param husart: USART handle - * @retval None - */ -__weak void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart) -{ - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_USART_ErrorCallback can be implemented in the user file - */ -} - -/** - * @} - */ - -/** @defgroup USART_Exported_Functions_Group3 Peripheral State and Errors functions - * @brief USART State and Errors functions - * -@verbatim - ============================================================================== - ##### Peripheral State and Errors functions ##### - ============================================================================== - [..] - This subsection provides a set of functions allowing to return the State of - USART communication - process, return Peripheral Errors occurred during communication process - (+) HAL_USART_GetState() API can be helpful to check in run-time the state - of the USART peripheral. - (+) HAL_USART_GetError() check in run-time errors that could be occurred during - communication. -@endverbatim - * @{ - */ - -/** - * @brief return the USART state - * @param husart: USART handle - * @retval HAL state - */ -HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart) -{ - return husart->State; -} - -/** - * @brief Return the USART error code - * @param husart : pointer to a USART_HandleTypeDef structure that contains - * the configuration information for the specified USART. - * @retval USART Error Code - */ -uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart) -{ - return husart->ErrorCode; -} - -/** - * @} - */ - - -/** - * @brief Simplex Send an amount of data in non-blocking mode. - * @note Function called under interruption only, once - * interruptions have been enabled by HAL_USART_Transmit_IT(). - * @param husart: USART handle - * @retval HAL status - * @note The USART errors are not managed to avoid the overrun error. - */ -static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart) -{ - uint16_t* tmp; - - if(husart->State == HAL_USART_STATE_BUSY_TX) - { - - if(husart->TxXferCount == 0) - { - /* Disable the USART Transmit Complete Interrupt */ - __HAL_USART_DISABLE_IT(husart, USART_IT_TXE); - - /* Enable the USART Transmit Complete Interrupt */ - __HAL_USART_ENABLE_IT(husart, USART_IT_TC); - - return HAL_OK; - } - else - { - if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) - { - tmp = (uint16_t*) husart->pTxBuffPtr; - husart->Instance->TDR = (*tmp & (uint16_t)0x01FF); - husart->pTxBuffPtr += 2; - } - else - { - husart->Instance->TDR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0xFF); - } - - husart->TxXferCount--; - - return HAL_OK; - } - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Wraps up transmission in non-blocking mode. - * @param husart: pointer to a USART_HandleTypeDef structure that contains - * the configuration information for the specified USART module. - * @retval HAL status - */ -static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart) -{ - /* Disable the USART Transmit Complete Interrupt */ - __HAL_USART_DISABLE_IT(husart, USART_IT_TC); - - /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ - __HAL_USART_DISABLE_IT(husart, USART_IT_ERR); - - husart->State = HAL_USART_STATE_READY; - - HAL_USART_TxCpltCallback(husart); - - return HAL_OK; -} - -/** - * @brief Simplex Receive an amount of data in non-blocking mode. - * Function called under interruption only, once - * interruptions have been enabled by HAL_USART_Receive_IT() - * @param husart: USART handle - * @retval HAL status - */ -static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart) -{ - uint16_t* tmp; - uint16_t uhMask = husart->Mask; - - if(husart->State == HAL_USART_STATE_BUSY_RX) - { - - if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) - { - tmp = (uint16_t*) husart->pRxBuffPtr; - *tmp = (uint16_t)(husart->Instance->RDR & uhMask); - husart->pRxBuffPtr += 2; - } - else - { - *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask); - } - /* Send dummy byte in order to generate the clock for the Slave to Send the next data */ - husart->Instance->TDR = (DUMMY_DATA & (uint16_t)0x00FF); - - if(--husart->RxXferCount == 0) - { - __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE); - - /* Disable the USART Parity Error Interrupt */ - __HAL_USART_DISABLE_IT(husart, USART_IT_PE); - - /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ - __HAL_USART_DISABLE_IT(husart, USART_IT_ERR); - - husart->State = HAL_USART_STATE_READY; - - HAL_USART_RxCpltCallback(husart); - - return HAL_OK; - } - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking). - * Function called under interruption only, once - * interruptions have been enabled by HAL_USART_TransmitReceive_IT() - * @param husart: USART handle - * @retval HAL status - */ -static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart) -{ - uint16_t* tmp; - uint16_t uhMask = husart->Mask; - - if(husart->State == HAL_USART_STATE_BUSY_TX_RX) - { - if(husart->TxXferCount != 0x00) - { - if(__HAL_USART_GET_FLAG(husart, USART_FLAG_TXE) != RESET) - { - if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) - { - tmp = (uint16_t*) husart->pTxBuffPtr; - husart->Instance->TDR = (uint16_t)(*tmp & uhMask); - husart->pTxBuffPtr += 2; - } - else - { - husart->Instance->TDR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)uhMask); - } - husart->TxXferCount--; - - /* Check the latest data transmitted */ - if(husart->TxXferCount == 0) - { - __HAL_USART_DISABLE_IT(husart, USART_IT_TXE); - } - } - } - - if(husart->RxXferCount != 0x00) - { - if(__HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE) != RESET) - { - if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) - { - tmp = (uint16_t*) husart->pRxBuffPtr; - *tmp = (uint16_t)(husart->Instance->RDR & uhMask); - husart->pRxBuffPtr += 2; - } - else - { - *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask); - } - husart->RxXferCount--; - } - } - - /* Check the latest data received */ - if(husart->RxXferCount == 0) - { - __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE); - - /* Disable the USART Parity Error Interrupt */ - __HAL_USART_DISABLE_IT(husart, USART_IT_PE); - - /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ - __HAL_USART_DISABLE_IT(husart, USART_IT_ERR); - - husart->State = HAL_USART_STATE_READY; - - HAL_USART_TxRxCpltCallback(husart); - - return HAL_OK; - } - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief This function handles USART Communication Timeout. - * @param husart: USART handle - * @param Flag: specifies the USART flag to check. - * @param Status: The new Flag status (SET or RESET). - * @param Timeout: Timeout duration - * @retval HAL status - */ -static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Timeout) -{ - uint32_t tickstart = HAL_GetTick(); - - /* Wait until flag is set */ - if(Status == RESET) - { - while(__HAL_USART_GET_FLAG(husart, 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_USART_DISABLE_IT(husart, USART_IT_TXE); - __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE); - __HAL_USART_DISABLE_IT(husart, USART_IT_PE); - __HAL_USART_DISABLE_IT(husart, USART_IT_ERR); - - husart->State= HAL_USART_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - return HAL_TIMEOUT; - } - } - } - } - else - { - while(__HAL_USART_GET_FLAG(husart, 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_USART_DISABLE_IT(husart, USART_IT_TXE); - __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE); - __HAL_USART_DISABLE_IT(husart, USART_IT_PE); - __HAL_USART_DISABLE_IT(husart, USART_IT_ERR); - - husart->State= HAL_USART_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - return HAL_TIMEOUT; - } - } - } - } - return HAL_OK; -} - - -/** - * @brief DMA USART transmit process complete callback - * @param hdma: DMA handle - * @retval None - */ -static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma) -{ - USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; - - /* DMA Normal mode */ - if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0) - { - husart->TxXferCount = 0; - - if(husart->State == HAL_USART_STATE_BUSY_TX) - { - /* Disable the DMA transfer for transmit request by resetting the DMAT bit - in the USART CR3 register */ - husart->Instance->CR3 &= ~(USART_CR3_DMAT); - - /* Enable the USART Transmit Complete Interrupt */ - __HAL_USART_ENABLE_IT(husart, USART_IT_TC); - } - } - /* DMA Circular mode */ - else - { - if(husart->State == HAL_USART_STATE_BUSY_TX) - { - HAL_USART_TxCpltCallback(husart); - } - } -} - - -/** - * @brief DMA USART transmit process half complete callback - * @param hdma : DMA handle - * @retval None - */ -static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma) -{ - USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; - - HAL_USART_TxHalfCpltCallback(husart); -} - -/** - * @brief DMA USART receive process complete callback - * @param hdma: DMA handle - * @retval None - */ -static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma) -{ - USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; - - /* DMA Normal mode */ - if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0) - { - husart->RxXferCount = 0; - - /* Disable the DMA RX transfer for the receiver request by resetting the DMAR bit - in USART CR3 register */ - husart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAR); - /* similarly, disable the DMA TX transfer that was started to provide the - clock to the slave device */ - husart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAT); - - if(husart->State == HAL_USART_STATE_BUSY_RX) - { - HAL_USART_RxCpltCallback(husart); - } - /* The USART state is HAL_USART_STATE_BUSY_TX_RX */ - else - { - HAL_USART_TxRxCpltCallback(husart); - } - husart->State= HAL_USART_STATE_READY; - } - /* DMA circular mode */ - else - { - if(husart->State == HAL_USART_STATE_BUSY_RX) - { - HAL_USART_RxCpltCallback(husart); - } - /* The USART state is HAL_USART_STATE_BUSY_TX_RX */ - else - { - HAL_USART_TxRxCpltCallback(husart); - } - } -} - -/** - * @brief DMA USART receive process half complete callback - * @param hdma : DMA handle - * @retval None - */ -static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma) -{ - USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; - - HAL_USART_RxHalfCpltCallback(husart); -} - -/** - * @brief DMA USART communication error callback - * @param hdma: DMA handle - * @retval None - */ -static void USART_DMAError(DMA_HandleTypeDef *hdma) -{ - USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; - - husart->RxXferCount = 0; - husart->TxXferCount = 0; - husart->ErrorCode |= HAL_USART_ERROR_DMA; - husart->State= HAL_USART_STATE_READY; - - HAL_USART_ErrorCallback(husart); -} - -/** - * @brief Configure the USART peripheral - * @param husart: USART handle - * @retval None - */ -static HAL_StatusTypeDef USART_SetConfig(USART_HandleTypeDef *husart) -{ - uint32_t tmpreg = 0x0; - USART_ClockSourceTypeDef clocksource = USART_CLOCKSOURCE_UNDEFINED; - HAL_StatusTypeDef ret = HAL_OK; - uint16_t brrtemp = 0x0000; - uint16_t usartdiv = 0x0000; - - /* Check the parameters */ - assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity)); - assert_param(IS_USART_PHASE(husart->Init.CLKPhase)); - assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit)); - assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate)); - assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength)); - assert_param(IS_USART_STOPBITS(husart->Init.StopBits)); - assert_param(IS_USART_PARITY(husart->Init.Parity)); - assert_param(IS_USART_MODE(husart->Init.Mode)); - assert_param(IS_USART_OVERSAMPLING(husart->Init.OverSampling)); - - - /*-------------------------- USART CR1 Configuration -----------------------*/ - /* Clear M, PCE, PS, TE and RE bits and configure - * the USART Word Length, Parity, Mode and OverSampling: - * set the M bits according to husart->Init.WordLength value - * set PCE and PS bits according to husart->Init.Parity value - * set TE and RE bits according to husart->Init.Mode value - * force OVER8 to 1 to allow to reach the maximum speed (Fclock/8) */ - tmpreg = (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode | USART_CR1_OVER8; - MODIFY_REG(husart->Instance->CR1, USART_CR1_FIELDS, tmpreg); - - /*---------------------------- USART CR2 Configuration ---------------------*/ - /* Clear and configure the USART Clock, CPOL, CPHA, LBCL and STOP bits: - * set CPOL bit according to husart->Init.CLKPolarity value - * set CPHA bit according to husart->Init.CLKPhase value - * set LBCL bit according to husart->Init.CLKLastBit value - * set STOP[13:12] bits according to husart->Init.StopBits value */ - tmpreg = (uint32_t)(USART_CLOCK_ENABLE); - tmpreg |= ((uint32_t)husart->Init.CLKPolarity | (uint32_t)husart->Init.CLKPhase); - tmpreg |= ((uint32_t)husart->Init.CLKLastBit | (uint32_t)husart->Init.StopBits); - MODIFY_REG(husart->Instance->CR2, USART_CR2_FIELDS, tmpreg); - - /*-------------------------- USART CR3 Configuration -----------------------*/ - /* no CR3 register configuration */ - - /*-------------------------- USART BRR Configuration -----------------------*/ - /* BRR is filled-up according to OVER8 bit setting which is forced to 1 */ - USART_GETCLOCKSOURCE(husart, clocksource); - switch (clocksource) - { - case USART_CLOCKSOURCE_PCLK1: - usartdiv = (uint16_t)((2*HAL_RCC_GetPCLK1Freq()) / husart->Init.BaudRate); - break; - case USART_CLOCKSOURCE_PCLK2: - usartdiv = (uint16_t)((2*HAL_RCC_GetPCLK2Freq()) / husart->Init.BaudRate); - break; - case USART_CLOCKSOURCE_HSI: - usartdiv = (uint16_t)((2*HSI_VALUE) / husart->Init.BaudRate); - break; - case USART_CLOCKSOURCE_SYSCLK: - usartdiv = (uint16_t)((2*HAL_RCC_GetSysClockFreq()) / husart->Init.BaudRate); - break; - case USART_CLOCKSOURCE_LSE: - usartdiv = (uint16_t)((2*LSE_VALUE) / husart->Init.BaudRate); - break; - case USART_CLOCKSOURCE_UNDEFINED: - default: - ret = HAL_ERROR; - break; - } - - brrtemp = usartdiv & 0xFFF0; - brrtemp |= (uint16_t)((usartdiv & (uint16_t)0x000F) >> 1U); - husart->Instance->BRR = brrtemp; - - return ret; -} - -/** - * @brief Check the USART Idle State - * @param husart: USART handle - * @retval HAL status - */ -static HAL_StatusTypeDef USART_CheckIdleState(USART_HandleTypeDef *husart) -{ - /* Initialize the USART ErrorCode */ - husart->ErrorCode = HAL_USART_ERROR_NONE; - - /* Check if the Transmitter is enabled */ - if((husart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE) - { - /* Wait until TEACK flag is set */ - if(USART_WaitOnFlagUntilTimeout(husart, USART_ISR_TEACK, RESET, TEACK_REACK_TIMEOUT) != HAL_OK) - { - husart->State= HAL_USART_STATE_TIMEOUT; - return HAL_TIMEOUT; - } - } - /* Check if the Receiver is enabled */ - if((husart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE) - { - /* Wait until REACK flag is set */ - if(USART_WaitOnFlagUntilTimeout(husart, USART_ISR_REACK, RESET, TEACK_REACK_TIMEOUT) != HAL_OK) - { - husart->State= HAL_USART_STATE_TIMEOUT; - return HAL_TIMEOUT; - } - } - - /* Initialize the USART state*/ - husart->State= HAL_USART_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(husart); - - return HAL_OK; -} - -/** - * @} - */ - -#endif /* HAL_USART_MODULE_ENABLED */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |