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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_usart.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_usart.c | 1857 |
1 files changed, 1857 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_usart.c b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_usart.c new file mode 100644 index 0000000000..0a09265198 --- /dev/null +++ b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_usart.c @@ -0,0 +1,1857 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_usart.c + * @author MCD Application Team + * @version V1.4.0 + * @date 14-August-2015 + * @brief USART HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of the Universal Synchronous Asynchronous Receiver Transmitter (USART) peripheral: + * + Initialization and de-initialization functions + * + IO operation functions + * + Peripheral Control functions + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + [..] + The USART HAL driver can be used as follows: + + (#) Declare a USART_HandleTypeDef handle structure. + (#) Initialize the USART low level resources by implementing the HAL_USART_MspInit () API: + (##) Enable the USARTx interface clock. + (##) USART pins configuration: + (+++) Enable the clock for the USART GPIOs. + (+++) Configure these USART pins as alternate function pull-up. + (##) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(), + HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs): + (+++) Configure the USARTx interrupt priority. + (+++) Enable the NVIC USART IRQ handle. + (##) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA() + HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs): + (+++) Declare a DMA handle structure for the Tx/Rx stream. + (+++) Enable the DMAx interface clock. + (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters. + (+++) Configure the DMA Tx/Rx Stream. + (+++) Associate the initialized DMA handle to the USART DMA Tx/Rx handle. + (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx Stream. + + (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware + flow control and Mode(Receiver/Transmitter) in the husart Init structure. + + (#) Initialize the USART registers by calling the HAL_USART_Init() API: + (++) These APIs configures also the low level Hardware GPIO, CLOCK, CORTEX...etc) + by calling the customized HAL_USART_MspInit(&husart) API. + + -@@- The specific USART interrupts (Transmission complete interrupt, + RXNE interrupt and Error Interrupts) will be managed using the macros + __HAL_USART_ENABLE_IT() and __HAL_USART_DISABLE_IT() inside the transmit and receive process. + + (#) Three operation modes are available within this driver : + + *** Polling mode IO operation *** + ================================= + [..] + (+) Send an amount of data in blocking mode using HAL_USART_Transmit() + (+) Receive an amount of data in blocking mode using HAL_USART_Receive() + + *** Interrupt mode IO operation *** + =================================== + [..] + (+) Send an amount of data in non blocking mode using HAL_USART_Transmit_IT() + (+) At transmission end of transfer HAL_USART_TxHalfCpltCallback is executed and user can + add his own code by customization of function pointer HAL_USART_TxCpltCallback + (+) Receive an amount of data in non blocking mode using HAL_USART_Receive_IT() + (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_UART_RxCpltCallback + (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_USART_ErrorCallback + + *** DMA mode IO operation *** + ============================== + [..] + (+) Send an amount of data in non blocking mode (DMA) using HAL_USART_Transmit_DMA() + (+) At transmission end of half transfer HAL_USART_TxHalfCpltCallback is executed and user can + add his own code by customization of function pointer HAL_USART_TxHalfCpltCallback + (+) At transmission end of transfer HAL_USART_TxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_USART_TxCpltCallback + (+) Receive an amount of data in non blocking mode (DMA) using HAL_USART_Receive_DMA() + (+) At reception end of half transfer HAL_USART_RxHalfCpltCallback is executed and user can + add his own code by customization of function pointer HAL_USART_RxHalfCpltCallback + (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_USART_RxCpltCallback + (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_USART_ErrorCallback + (+) Pause the DMA Transfer using HAL_USART_DMAPause() + (+) Resume the DMA Transfer using HAL_USART_DMAResume() + (+) Stop the DMA Transfer using HAL_USART_DMAStop() + + *** USART HAL driver macros list *** + ============================================= + [..] + Below the list of most used macros in USART HAL driver. + + (+) __HAL_USART_ENABLE: Enable the USART peripheral + (+) __HAL_USART_DISABLE: Disable the USART peripheral + (+) __HAL_USART_GET_FLAG : Check whether the specified USART flag is set or not + (+) __HAL_USART_CLEAR_FLAG : Clear the specified USART pending flag + (+) __HAL_USART_ENABLE_IT: Enable the specified USART interrupt + (+) __HAL_USART_DISABLE_IT: Disable the specified USART interrupt + + [..] + (@) You can refer to the USART HAL driver header file for more useful macros + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f4xx_hal.h" + +/** @addtogroup STM32F4xx_HAL_Driver + * @{ + */ + +/** @defgroup USART USART + * @brief HAL USART Synchronous module driver + * @{ + */ +#ifdef HAL_USART_MODULE_ENABLED +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @addtogroup USART_Private_Constants + * @{ + */ +#define DUMMY_DATA 0xFFFF +#define USART_TIMEOUT_VALUE 22000 +/** + * @} + */ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ +/** @addtogroup USART_Private_Functions + * @{ + */ +static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart); +static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart); +static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart); +static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart); +static void USART_SetConfig (USART_HandleTypeDef *husart); +static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma); +static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma); +static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma); +static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma); +static void USART_DMAError(DMA_HandleTypeDef *hdma); +static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Timeout); +/** + * @} + */ + +/* Exported functions --------------------------------------------------------*/ +/** @defgroup USART_Exported_Functions USART Exported Functions + * @{ + */ + +/** @defgroup USART_Exported_Functions_Group1 USART Initialization and de-initialization functions + * @brief Initialization and Configuration functions + * +@verbatim + ============================================================================== + ##### Initialization and Configuration functions ##### + ============================================================================== + [..] + This subsection provides a set of functions allowing to initialize the USART + in asynchronous and in synchronous modes. + (+) For the asynchronous mode only these parameters can be configured: + (++) Baud Rate + (++) Word Length + (++) Stop Bit + (++) Parity: If the parity is enabled, then the MSB bit of the data written + in the data register is transmitted but is changed by the parity bit. + Depending on the frame length defined by the M bit (8-bits or 9-bits), + please refer to Reference manual for possible USART frame formats. + (++) USART polarity + (++) USART phase + (++) USART LastBit + (++) Receiver/transmitter modes + + [..] + The HAL_USART_Init() function follows the USART synchronous configuration + procedure (details for the procedure are available in reference manual (RM0329)). + +@endverbatim + * @{ + */ + +/** + * @brief Initializes the USART mode according to the specified + * parameters in the USART_InitTypeDef and create the associated handle. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart) +{ + /* Check the USART handle allocation */ + if(husart == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_USART_INSTANCE(husart->Instance)); + + if(husart->State == HAL_USART_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + husart->Lock = HAL_UNLOCKED; + /* Init the low level hardware */ + HAL_USART_MspInit(husart); + } + + husart->State = HAL_USART_STATE_BUSY; + + /* Set the USART Communication parameters */ + USART_SetConfig(husart); + + /* In USART mode, the following bits must be kept cleared: + - LINEN bit in the USART_CR2 register + - HDSEL, SCEN and IREN bits in the USART_CR3 register */ + husart->Instance->CR2 &= ~USART_CR2_LINEN; + husart->Instance->CR3 &= ~(USART_CR3_IREN | USART_CR3_SCEN | USART_CR3_HDSEL); + + /* Enable the Peripheral */ + __HAL_USART_ENABLE(husart); + + /* Initialize the USART state */ + husart->ErrorCode = HAL_USART_ERROR_NONE; + husart->State= HAL_USART_STATE_READY; + + return HAL_OK; +} + +/** + * @brief DeInitializes the USART peripheral. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart) +{ + /* Check the USART handle allocation */ + if(husart == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_USART_INSTANCE(husart->Instance)); + + husart->State = HAL_USART_STATE_BUSY; + + /* Disable the Peripheral */ + __HAL_USART_DISABLE(husart); + + /* DeInit the low level hardware */ + HAL_USART_MspDeInit(husart); + + husart->ErrorCode = HAL_USART_ERROR_NONE; + husart->State = HAL_USART_STATE_RESET; + + /* Release Lock */ + __HAL_UNLOCK(husart); + + return HAL_OK; +} + +/** + * @brief USART MSP Init. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval None + */ + __weak void HAL_USART_MspInit(USART_HandleTypeDef *husart) +{ + /* NOTE: This function Should not be modified, when the callback is needed, + the HAL_USART_MspInit could be implemented in the user file + */ +} + +/** + * @brief USART MSP DeInit. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval None + */ + __weak void HAL_USART_MspDeInit(USART_HandleTypeDef *husart) +{ + /* NOTE: This function Should not be modified, when the callback is needed, + the HAL_USART_MspDeInit could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup USART_Exported_Functions_Group2 IO operation functions + * @brief USART Transmit and Receive functions + * +@verbatim + ============================================================================== + ##### IO operation functions ##### + ============================================================================== + [..] + This subsection provides a set of functions allowing to manage the USART synchronous + data transfers. + + [..] + The USART supports master mode only: it cannot receive or send data related to an input + clock (SCLK is always an output). + + (#) There are two modes of transfer: + (++) Blocking mode: The communication is performed in polling mode. + The HAL status of all data processing is returned by the same function + after finishing transfer. + (++) No-Blocking mode: The communication is performed using Interrupts + or DMA, These API's return the HAL status. + The end of the data processing will be indicated through the + dedicated USART IRQ when using Interrupt mode or the DMA IRQ when + using DMA mode. + The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback() + user callbacks + will be executed respectively at the end of the transmit or Receive process + The HAL_USART_ErrorCallback() user callback will be executed when a communication + error is detected + + (#) Blocking mode APIs are : + (++) HAL_USART_Transmit() in simplex mode + (++) HAL_USART_Receive() in full duplex receive only + (++) HAL_USART_TransmitReceive() in full duplex mode + + (#) Non Blocking mode APIs with Interrupt are : + (++) HAL_USART_Transmit_IT()in simplex mode + (++) HAL_USART_Receive_IT() in full duplex receive only + (++) HAL_USART_TransmitReceive_IT() in full duplex mode + (++) HAL_USART_IRQHandler() + + (#) Non Blocking mode functions with DMA are : + (++) HAL_USART_Transmit_DMA()in simplex mode + (++) HAL_USART_Receive_DMA() in full duplex receive only + (++) HAL_USART_TransmitReceie_DMA() in full duplex mode + (++) HAL_USART_DMAPause() + (++) HAL_USART_DMAResume() + (++) HAL_USART_DMAStop() + + (#) A set of Transfer Complete Callbacks are provided in non Blocking mode: + (++) HAL_USART_TxHalfCpltCallback() + (++) HAL_USART_TxCpltCallback() + (++) HAL_USART_RxHalfCpltCallback() + (++) HAL_USART_RxCpltCallback() + (++) HAL_USART_ErrorCallback() + (++) HAL_USART_TxRxCpltCallback() + +@endverbatim + * @{ + */ + +/** + * @brief Simplex Send an amount of data in blocking mode. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @param pTxData: Pointer to data buffer + * @param Size: Amount of data to be sent + * @param Timeout: Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout) +{ + uint16_t* tmp; + + 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; + while(husart->TxXferCount > 0) + { + husart->TxXferCount--; + if(husart->Init.WordLength == USART_WORDLENGTH_9B) + { + /* Wait for TC flag in order to write data in DR */ + if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + tmp = (uint16_t*) pTxData; + husart->Instance->DR = (*tmp & (uint16_t)0x01FF); + if(husart->Init.Parity == USART_PARITY_NONE) + { + pTxData += 2; + } + else + { + pTxData += 1; + } + } + else + { + if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + husart->Instance->DR = (*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 Full-Duplex Receive an amount of data in blocking mode. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @param pRxData: Pointer to data buffer + * @param Size: Amount of data to be received + * @param Timeout: Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout) +{ + uint16_t* tmp; + + 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; + /* Check the remain data to be received */ + while(husart->RxXferCount > 0) + { + husart->RxXferCount--; + if(husart->Init.WordLength == USART_WORDLENGTH_9B) + { + /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */ + if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + /* Send dummy byte in order to generate clock */ + husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF); + + /* Wait for RXNE Flag */ + if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + tmp = (uint16_t*) pRxData ; + if(husart->Init.Parity == USART_PARITY_NONE) + { + *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); + pRxData +=2; + } + else + { + *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF); + pRxData +=1; + } + } + else + { + /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */ + if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Send Dummy Byte in order to generate clock */ + husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x00FF); + + /* Wait until RXNE flag is set to receive the byte */ + if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + if(husart->Init.Parity == USART_PARITY_NONE) + { + /* Receive data */ + *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF); + } + else + { + /* Receive data */ + *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F); + } + + } + } + + husart->State = HAL_USART_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(husart); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Full-Duplex Send receive an amount of data in full-duplex mode (blocking mode). + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @param pTxData: Pointer to data transmitted buffer + * @param pRxData: Pointer to data received buffer + * @param Size: Amount of data to be sent + * @param Timeout: Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout) +{ + uint16_t* tmp; + + 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; + + /* Check the remain data to be received */ + while(husart->TxXferCount > 0) + { + husart->TxXferCount--; + husart->RxXferCount--; + if(husart->Init.WordLength == USART_WORDLENGTH_9B) + { + /* Wait for TC flag in order to write data in DR */ + if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + tmp = (uint16_t*) pTxData; + husart->Instance->DR = (*tmp & (uint16_t)0x01FF); + if(husart->Init.Parity == USART_PARITY_NONE) + { + pTxData += 2; + } + else + { + pTxData += 1; + } + + /* Wait for RXNE Flag */ + if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + tmp = (uint16_t*) pRxData ; + if(husart->Init.Parity == USART_PARITY_NONE) + { + *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); + pRxData += 2; + } + else + { + *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF); + pRxData += 1; + } + } + else + { + /* Wait for TC flag in order to write data in DR */ + if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + husart->Instance->DR = (*pTxData++ & (uint8_t)0x00FF); + + /* Wait for RXNE Flag */ + if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + if(husart->Init.Parity == USART_PARITY_NONE) + { + /* Receive data */ + *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF); + } + else + { + /* Receive data */ + *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F); + } + } + } + + husart->State = HAL_USART_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(husart); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Simplex Send an amount of data in non-blocking mode. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @param pTxData: Pointer to data buffer + * @param Size: Amount of data to be sent + * @retval HAL status + * @note The USART errors are not managed to avoid the overrun error. + */ +HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size) +{ + if(husart->State == HAL_USART_STATE_READY) + { + if((pTxData == NULL) || (Size == 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" + The __HAL_USART_ENABLE_IT(husart, USART_IT_ERR) can be used to enable the Frame error, + Noise error interrupt */ + + /* Process Unlocked */ + __HAL_UNLOCK(husart); + + /* Enable the USART Transmit Data Register Empty Interrupt */ + __HAL_USART_ENABLE_IT(husart, USART_IT_TXE); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Simplex Receive an amount of data in non-blocking mode. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @param pRxData: Pointer to data buffer + * @param Size: Amount of data to be received + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size) +{ + if(husart->State == HAL_USART_STATE_READY) + { + if((pRxData == NULL) || (Size == 0)) + { + return HAL_ERROR; + } + /* Process Locked */ + __HAL_LOCK(husart); + + husart->pRxBuffPtr = pRxData; + husart->RxXferSize = Size; + husart->RxXferCount = Size; + + husart->ErrorCode = HAL_USART_ERROR_NONE; + husart->State = HAL_USART_STATE_BUSY_RX; + + /* Process Unlocked */ + __HAL_UNLOCK(husart); + + /* Enable the USART 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); + + /* Send dummy byte in order to generate the clock for the slave to send data */ + husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking). + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @param pTxData: Pointer to data transmitted buffer + * @param pRxData: Pointer to data received buffer + * @param Size: Amount of data to be received + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size) +{ + if(husart->State == HAL_USART_STATE_READY) + { + if((pTxData == NULL) || (pRxData == NULL) || (Size == 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; + + husart->ErrorCode = HAL_USART_ERROR_NONE; + husart->State = HAL_USART_STATE_BUSY_TX_RX; + + /* Process Unlocked */ + __HAL_UNLOCK(husart); + + /* Enable the USART Data Register not empty Interrupt */ + __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); + + /* Enable the USART Transmit Data Register Empty Interrupt */ + __HAL_USART_ENABLE_IT(husart, USART_IT_TXE); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Simplex Send an amount of data in non-blocking mode. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @param pTxData: Pointer to data buffer + * @param Size: Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size) +{ + uint32_t *tmp; + + if(husart->State == HAL_USART_STATE_READY) + { + if((pTxData == NULL) || (Size == 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 Stream */ + tmp = (uint32_t*)&pTxData; + HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size); + + /* Clear the TC flag in the SR register by writing 0 to it */ + __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC); + + /* 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 Receive an amount of data in non-blocking mode. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @param pRxData: Pointer to data buffer + * @param Size: Amount of data to be received + * @retval HAL status + * @note The USART DMA transmit stream must be configured in order to generate the clock for the slave. + * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit. + */ +HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size) +{ + uint32_t *tmp; + + if(husart->State == HAL_USART_STATE_READY) + { + if((pRxData == NULL) || (Size == 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 Stream */ + tmp = (uint32_t*)&pRxData; + HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size); + + /* Enable the USART transmit DMA Stream: the transmit stream is used in order + to generate in the non-blocking mode the clock to the slave device, + this mode isn't a simplex receive mode but a full-duplex receive one */ + HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size); + + /* Clear the Overrun flag just before enabling the DMA Rx request: mandatory for the second transfer + when using the USART in circular mode */ + __HAL_USART_CLEAR_OREFLAG(husart); + + /* 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: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @param pTxData: Pointer to data transmitted buffer + * @param pRxData: Pointer to data received buffer + * @param Size: Amount of data to be received + * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size) +{ + uint32_t *tmp; + + if(husart->State == HAL_USART_STATE_READY) + { + if((pTxData == NULL) || (pRxData == NULL) || (Size == 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 Stream */ + tmp = (uint32_t*)&pRxData; + HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size); + + /* Enable the USART transmit DMA Stream */ + tmp = (uint32_t*)&pTxData; + HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size); + + /* Clear the TC flag in the SR register by writing 0 to it */ + __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC); + + /* Clear the Overrun flag: mandatory for the second transfer in circular mode */ + __HAL_USART_CLEAR_OREFLAG(husart); + + /* 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: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart) +{ + /* Process Locked */ + __HAL_LOCK(husart); + + /* Disable the USART DMA Tx request */ + husart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT); + + /* Process Unlocked */ + __HAL_UNLOCK(husart); + + return HAL_OK; +} + +/** + * @brief Resumes the DMA Transfer. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart) +{ + /* Process Locked */ + __HAL_LOCK(husart); + + /* Enable the USART DMA Tx request */ + husart->Instance->CR3 |= USART_CR3_DMAT; + + /* Process Unlocked */ + __HAL_UNLOCK(husart); + + return HAL_OK; +} + +/** + * @brief Stops the DMA Transfer. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart) +{ + /* The Lock is not implemented on this API to allow the user application + to call the HAL USART API under callbacks HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback(): + when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated + and the correspond call back is executed HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback() + */ + + /* 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); + } + + /* Disable the USART Tx/Rx DMA requests */ + husart->Instance->CR3 &= ~USART_CR3_DMAT; + husart->Instance->CR3 &= ~USART_CR3_DMAR; + + husart->State = HAL_USART_STATE_READY; + + return HAL_OK; +} + +/** + * @brief This function handles USART interrupt request. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval None + */ +void HAL_USART_IRQHandler(USART_HandleTypeDef *husart) +{ + uint32_t tmp1 = 0, tmp2 = 0; + + tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_PE); + tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_PE); + /* USART parity error interrupt occurred -----------------------------------*/ + if((tmp1 != RESET) && (tmp2 != RESET)) + { + __HAL_USART_CLEAR_PEFLAG(husart); + husart->ErrorCode |= HAL_USART_ERROR_PE; + } + + tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_FE); + tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR); + /* USART frame error interrupt occurred ------------------------------------*/ + if((tmp1 != RESET) && (tmp2 != RESET)) + { + __HAL_USART_CLEAR_FEFLAG(husart); + husart->ErrorCode |= HAL_USART_ERROR_FE; + } + + tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_NE); + tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR); + /* USART noise error interrupt occurred ------------------------------------*/ + if((tmp1 != RESET) && (tmp2 != RESET)) + { + __HAL_USART_CLEAR_NEFLAG(husart); + husart->ErrorCode |= HAL_USART_ERROR_NE; + } + + tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_ORE); + tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR); + /* USART Over-Run interrupt occurred ---------------------------------------*/ + if((tmp1 != RESET) && (tmp2 != RESET)) + { + __HAL_USART_CLEAR_OREFLAG(husart); + husart->ErrorCode |= HAL_USART_ERROR_ORE; + } + + if(husart->ErrorCode != HAL_USART_ERROR_NONE) + { + /* Set the USART state ready to be able to start again the process */ + husart->State = HAL_USART_STATE_READY; + + HAL_USART_ErrorCallback(husart); + } + + tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE); + tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_RXNE); + /* USART in mode Receiver --------------------------------------------------*/ + if((tmp1 != RESET) && (tmp2 != RESET)) + { + if(husart->State == HAL_USART_STATE_BUSY_RX) + { + USART_Receive_IT(husart); + } + else + { + USART_TransmitReceive_IT(husart); + } + } + + tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_TXE); + tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_TXE); + /* USART in mode Transmitter -----------------------------------------------*/ + if((tmp1 != RESET) && (tmp2 != RESET)) + { + if(husart->State == HAL_USART_STATE_BUSY_TX) + { + USART_Transmit_IT(husart); + } + else + { + USART_TransmitReceive_IT(husart); + } + } + + tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_TC); + tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_TC); + /* USART in mode Transmitter (transmission end) ----------------------------*/ + if((tmp1 != RESET) && (tmp2 != RESET)) + { + USART_EndTransmit_IT(husart); + } +} + +/** + * @brief Tx Transfer completed callbacks. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval None + */ + __weak void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart) +{ + /* NOTE: This function Should not be modified, when the callback is needed, + the HAL_USART_TxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Tx Half Transfer completed callbacks. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval None + */ + __weak void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart) +{ + /* NOTE: This function Should not be modified, when the callback is needed, + the HAL_USART_TxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Rx Transfer completed callbacks. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval None + */ +__weak void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart) +{ + /* NOTE: This function Should not be modified, when the callback is needed, + the HAL_USART_TxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Rx Half Transfer completed callbacks. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval None + */ +__weak void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart) +{ + /* NOTE: This function Should not be modified, when the callback is needed, + the HAL_USART_TxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Tx/Rx Transfers completed callback for the non-blocking process. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval None + */ +__weak void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart) +{ + /* NOTE: This function Should not be modified, when the callback is needed, + the HAL_USART_TxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief USART error callbacks. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval None + */ + __weak void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart) +{ + /* NOTE: This function Should not be modified, when the callback is needed, + the HAL_USART_ErrorCallback could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup USART_Exported_Functions_Group3 Peripheral State and Errors functions + * @brief USART State and Errors functions + * +@verbatim + ============================================================================== + ##### Peripheral State and Errors functions ##### + ============================================================================== + [..] + This subsection provides a set of functions allowing to return the State of + USART communication + process, return Peripheral Errors occurred during communication process + (+) HAL_USART_GetState() API can be helpful to check in run-time the state + of the USART peripheral. + (+) HAL_USART_GetError() check in run-time errors that could be occurred during + communication. +@endverbatim + * @{ + */ + +/** + * @brief Returns the USART state. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval HAL state + */ +HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart) +{ + return husart->State; +} + +/** + * @brief Return the USART error code + * @param husart : pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART. + * @retval USART Error Code + */ +uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart) +{ + return husart->ErrorCode; +} + +/** + * @} + */ + + +/** + * @brief DMA USART transmit process complete callback. + * @param hdma: DMA handle + * @retval None + */ +static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma) +{ + USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + /* DMA Normal mode */ + if((hdma->Instance->CR & DMA_SxCR_CIRC) == 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 */ + CLEAR_BIT(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: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma) +{ + USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; + + HAL_USART_TxHalfCpltCallback(husart); +} + +/** + * @brief DMA USART receive process complete callback. + * @param hdma: DMA handle + * @retval None + */ +static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma) +{ + USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + /* DMA Normal mode */ + if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0) + { + husart->RxXferCount = 0; + if(husart->State == HAL_USART_STATE_BUSY_RX) + { + /* Disable the DMA transfer for the Transmit/receiver requests by setting the DMAT/DMAR bit + in the USART CR3 register */ + husart->Instance->CR3 &= ~(USART_CR3_DMAR); + + husart->State= HAL_USART_STATE_READY; + HAL_USART_RxCpltCallback(husart); + } + /* The USART state is HAL_USART_STATE_BUSY_TX_RX */ + else + { + /* Disable the DMA transfer for the Transmit/receiver requests by setting the DMAT/DMAR bit + in the USART CR3 register */ + husart->Instance->CR3 &= ~(USART_CR3_DMAR); + husart->Instance->CR3 &= ~(USART_CR3_DMAT); + + husart->State= HAL_USART_STATE_READY; + HAL_USART_TxRxCpltCallback(husart); + } + } + /* DMA circular mode */ + else + { + if(husart->State == HAL_USART_STATE_BUSY_RX) + { + HAL_USART_RxCpltCallback(husart); + } + /* The USART state is HAL_USART_STATE_BUSY_TX_RX */ + else + { + HAL_USART_TxRxCpltCallback(husart); + } + } +} + +/** + * @brief DMA USART receive process half complete callback + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma) +{ + USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; + + HAL_USART_RxHalfCpltCallback(husart); +} + +/** + * @brief DMA USART communication error callback. + * @param hdma: DMA handle + * @retval None + */ +static void USART_DMAError(DMA_HandleTypeDef *hdma) +{ + 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 This function handles USART Communication Timeout. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @param Flag: specifies the USART flag to check. + * @param Status: The new Flag status (SET or RESET). + * @param 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 = 0; + + /* Get tick */ + 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 Simplex Send an amount of data in non-blocking mode. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval HAL status + * @note The USART errors are not managed to avoid the overrun error. + */ +static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart) +{ + uint16_t* tmp; + + if(husart->State == HAL_USART_STATE_BUSY_TX) + { + if(husart->Init.WordLength == USART_WORDLENGTH_9B) + { + tmp = (uint16_t*) husart->pTxBuffPtr; + husart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF); + if(husart->Init.Parity == USART_PARITY_NONE) + { + husart->pTxBuffPtr += 2; + } + else + { + husart->pTxBuffPtr += 1; + } + } + else + { + husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF); + } + + if(--husart->TxXferCount == 0) + { + /* Disable the USART Transmit data register empty 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 + { + 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. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval HAL status + */ +static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart) +{ + uint16_t* tmp; + if(husart->State == HAL_USART_STATE_BUSY_RX) + { + if(husart->Init.WordLength == USART_WORDLENGTH_9B) + { + tmp = (uint16_t*) husart->pRxBuffPtr; + if(husart->Init.Parity == USART_PARITY_NONE) + { + *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); + husart->pRxBuffPtr += 2; + } + else + { + *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF); + husart->pRxBuffPtr += 1; + } + if(--husart->RxXferCount != 0x00) + { + /* Send dummy byte in order to generate the clock for the slave to send the next data */ + husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF); + } + } + else + { + if(husart->Init.Parity == USART_PARITY_NONE) + { + *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF); + } + else + { + *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F); + } + + if(--husart->RxXferCount != 0x00) + { + /* Send dummy byte in order to generate the clock for the slave to send the next data */ + husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x00FF); + } + } + + if(husart->RxXferCount == 0) + { + /* Disable the USART RXNE Interrupt */ + __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). + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval HAL status + */ +static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart) +{ + uint16_t* tmp; + + if(husart->State == HAL_USART_STATE_BUSY_TX_RX) + { + if(husart->TxXferCount != 0x00) + { + if(__HAL_USART_GET_FLAG(husart, USART_FLAG_TXE) != RESET) + { + if(husart->Init.WordLength == USART_WORDLENGTH_9B) + { + tmp = (uint16_t*) husart->pTxBuffPtr; + husart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF); + if(husart->Init.Parity == USART_PARITY_NONE) + { + husart->pTxBuffPtr += 2; + } + else + { + husart->pTxBuffPtr += 1; + } + } + else + { + husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF); + } + 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) + { + tmp = (uint16_t*) husart->pRxBuffPtr; + if(husart->Init.Parity == USART_PARITY_NONE) + { + *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); + husart->pRxBuffPtr += 2; + } + else + { + *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF); + husart->pRxBuffPtr += 1; + } + } + else + { + if(husart->Init.Parity == USART_PARITY_NONE) + { + *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF); + } + else + { + *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F); + } + } + 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 Configures the USART peripheral. + * @param husart: pointer to a USART_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval None + */ +static void USART_SetConfig(USART_HandleTypeDef *husart) +{ + uint32_t tmpreg = 0x00; + + /* Check the parameters */ + assert_param(IS_USART_INSTANCE(husart->Instance)); + assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity)); + assert_param(IS_USART_PHASE(husart->Init.CLKPhase)); + assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit)); + assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate)); + assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength)); + assert_param(IS_USART_STOPBITS(husart->Init.StopBits)); + assert_param(IS_USART_PARITY(husart->Init.Parity)); + assert_param(IS_USART_MODE(husart->Init.Mode)); + + /* The LBCL, CPOL and CPHA bits have to be selected when both the transmitter and the + receiver are disabled (TE=RE=0) to ensure that the clock pulses function correctly. */ + husart->Instance->CR1 &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE)); + + /*---------------------------- USART CR2 Configuration ---------------------*/ + tmpreg = husart->Instance->CR2; + /* Clear CLKEN, CPOL, CPHA and LBCL bits */ + tmpreg &= (uint32_t)~((uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_CLKEN | USART_CR2_LBCL | USART_CR2_STOP)); + /* Configure the USART Clock, CPOL, CPHA and LastBit -----------------------*/ + /* Set CPOL bit according to husart->Init.CLKPolarity value */ + /* Set CPHA bit according to husart->Init.CLKPhase value */ + /* Set LBCL bit according to husart->Init.CLKLastBit value */ + /* Set Stop Bits: Set STOP[13:12] bits according to husart->Init.StopBits value */ + tmpreg |= (uint32_t)(USART_CLOCK_ENABLE| husart->Init.CLKPolarity | + husart->Init.CLKPhase| husart->Init.CLKLastBit | husart->Init.StopBits); + /* Write to USART CR2 */ + husart->Instance->CR2 = (uint32_t)tmpreg; + + /*-------------------------- USART CR1 Configuration -----------------------*/ + tmpreg = husart->Instance->CR1; + + /* Clear M, PCE, PS, TE, RE and OVER8 bits */ + tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | \ + USART_CR1_RE | USART_CR1_OVER8)); + + /* Configure the USART Word Length, Parity and mode: + Set the M bits according to husart->Init.WordLength value + Set PCE and PS bits according to husart->Init.Parity value + Set TE and RE bits according to husart->Init.Mode value + Force OVER8 bit to 1 in order to reach the max USART frequencies */ + tmpreg |= (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode | USART_CR1_OVER8; + + /* Write to USART CR1 */ + husart->Instance->CR1 = (uint32_t)tmpreg; + + /*-------------------------- USART CR3 Configuration -----------------------*/ + /* Clear CTSE and RTSE bits */ + husart->Instance->CR3 &= (uint32_t)~((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE)); + + /*-------------------------- USART BRR Configuration -----------------------*/ + if((husart->Instance == USART1) || (husart->Instance == USART6)) + { + husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK2Freq(), husart->Init.BaudRate); + } + else + { + husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK1Freq(), husart->Init.BaudRate); + } +} + +/** + * @} + */ + +#endif /* HAL_USART_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |