Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_irda.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_irda.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,1531 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_irda.c + * @author MCD Application Team + * @version V1.5.0 + * @date 06-May-2016 + * @brief IRDA HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of the IrDA SIR ENDEC block (IrDA): + * + Initialization and de-initialization methods + * + IO operation methods + * + Peripheral Control methods + * + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + [..] + The IRDA HAL driver can be used as follows: + + (#) Declare a IRDA_HandleTypeDef handle structure. + (#) Initialize the IRDA low level resources by implementing the HAL_IRDA_MspInit() API: + (##) Enable the USARTx interface clock. + (##) IRDA pins configuration: + (+++) Enable the clock for the IRDA GPIOs. + (+++) Configure these IRDA pins as alternate function pull-up. + (##) NVIC configuration if you need to use interrupt process (HAL_IRDA_Transmit_IT() + and HAL_IRDA_Receive_IT() APIs): + (+++) Configure the USARTx interrupt priority. + (+++) Enable the NVIC USART IRQ handle. + (##) DMA Configuration if you need to use DMA process (HAL_IRDA_Transmit_DMA() + and HAL_IRDA_Receive_DMA() APIs): + (+++) Declare a DMA handle structure for the Tx/Rx stream. + (+++) Enable the DMAx interface clock. + (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters. + (+++) Configure the DMA Tx/Rx Stream. + (+++) Associate the initialized DMA handle to the IRDA 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, Parity, IrDA Mode, Prescaler + and Mode(Receiver/Transmitter) in the hirda Init structure. + + (#) Initialize the IRDA registers by calling the HAL_IRDA_Init() API: + (++) This API configures also the low level Hardware GPIO, CLOCK, CORTEX...etc) + by calling the customized HAL_IRDA_MspInit() API. + -@@- The specific IRDA interrupts (Transmission complete interrupt, + RXNE interrupt and Error Interrupts) will be managed using the macros + __HAL_IRDA_ENABLE_IT() and __HAL_IRDA_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_IRDA_Transmit() + (+) Receive an amount of data in blocking mode using HAL_IRDA_Receive() + + *** Interrupt mode IO operation *** + =================================== + [..] + (+) Send an amount of data in non blocking mode using HAL_IRDA_Transmit_IT() + (+) At transmission end of transfer HAL_IRDA_TxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_IRDA_TxCpltCallback + (+) Receive an amount of data in non blocking mode using HAL_IRDA_Receive_IT() + (+) At reception end of transfer HAL_IRDA_RxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_IRDA_RxCpltCallback + (+) In case of transfer Error, HAL_IRDA_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_IRDA_ErrorCallback + + *** DMA mode IO operation *** + ============================= + [..] + (+) Send an amount of data in non blocking mode (DMA) using HAL_IRDA_Transmit_DMA() + (+) At transmission end of transfer HAL_IRDA_TxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_IRDA_TxCpltCallback + (+) Receive an amount of data in non blocking mode (DMA) using HAL_IRDA_Receive_DMA() + (+) At reception end of transfer HAL_IRDA_RxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_IRDA_RxCpltCallback + (+) In case of transfer Error, HAL_IRDA_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_IRDA_ErrorCallback + + *** IRDA HAL driver macros list *** + =================================== + [..] + Below the list of most used macros in IRDA HAL driver. + + (+) __HAL_IRDA_ENABLE: Enable the IRDA peripheral + (+) __HAL_IRDA_DISABLE: Disable the IRDA peripheral + (+) __HAL_IRDA_GET_FLAG : Checks whether the specified IRDA flag is set or not + (+) __HAL_IRDA_CLEAR_FLAG : Clears the specified IRDA pending flag + (+) __HAL_IRDA_ENABLE_IT: Enables the specified IRDA interrupt + (+) __HAL_IRDA_DISABLE_IT: Disables the specified IRDA interrupt + + (@) You can refer to the IRDA HAL driver header file for more useful macros + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f4xx_hal.h" + +/** @addtogroup STM32F4xx_HAL_Driver + * @{ + */ + +/** @defgroup IRDA IRDA + * @brief HAL IRDA module driver + * @{ + */ + +#ifdef HAL_IRDA_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @addtogroup IRDA_Private_Constants + * @{ + */ +/** + * @} + */ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/** @addtogroup IRDA_Private_Functions + * @{ + */ +static void IRDA_SetConfig (IRDA_HandleTypeDef *hirda); +static HAL_StatusTypeDef IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda); +static HAL_StatusTypeDef IRDA_EndTransmit_IT(IRDA_HandleTypeDef *hirda); +static HAL_StatusTypeDef IRDA_Receive_IT(IRDA_HandleTypeDef *hirda); +static void IRDA_DMATransmitCplt(DMA_HandleTypeDef *hdma); +static void IRDA_DMATransmitHalfCplt(DMA_HandleTypeDef *hdma); +static void IRDA_DMAReceiveCplt(DMA_HandleTypeDef *hdma); +static void IRDA_DMAReceiveHalfCplt(DMA_HandleTypeDef *hdma); +static void IRDA_DMAError(DMA_HandleTypeDef *hdma); +static void IRDA_DMAAbortOnError(DMA_HandleTypeDef *hdma); +static HAL_StatusTypeDef IRDA_WaitOnFlagUntilTimeout(IRDA_HandleTypeDef *hirda, uint32_t Flag, FlagStatus Status, uint32_t Tickstart,uint32_t Timeout); +static void IRDA_EndTxTransfer(IRDA_HandleTypeDef *hirda); +static void IRDA_EndRxTransfer(IRDA_HandleTypeDef *hirda); +/** + * @} + */ +/* Exported functions --------------------------------------------------------*/ +/** @defgroup IRDA_Exported_Functions IrDA Exported Functions + * @{ + */ + +/** @defgroup IRDA_Exported_Functions_Group1 IrDA Initialization and de-initialization functions + * @brief Initialization and Configuration functions + * +@verbatim + +=============================================================================== + ##### Initialization and Configuration functions ##### + =============================================================================== + [..] + This subsection provides a set of functions allowing to initialize the USARTx or the UARTy + in IrDA mode. + (+) For the asynchronous mode only these parameters can be configured: + (++) BaudRate + (++) WordLength + (++) 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 IRDA frame formats. + (++) Prescaler: A pulse of width less than two and greater than one PSC period(s) may or may + not be rejected. The receiver set up time should be managed by software. The IrDA physical layer + specification specifies a minimum of 10 ms delay between transmission and + reception (IrDA is a half duplex protocol). + (++) Mode: Receiver/transmitter modes + (++) IrDAMode: the IrDA can operate in the Normal mode or in the Low power mode. + [..] + The HAL_IRDA_Init() API follows IRDA configuration procedures (details for the procedures + are available in reference manual). + +@endverbatim + * @{ + */ + +/** + * @brief Initializes the IRDA mode according to the specified + * parameters in the IRDA_InitTypeDef and create the associated handle. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_IRDA_Init(IRDA_HandleTypeDef *hirda) +{ + /* Check the IRDA handle allocation */ + if(hirda == NULL) + { + return HAL_ERROR; + } + + /* Check the IRDA instance parameters */ + assert_param(IS_IRDA_INSTANCE(hirda->Instance)); + /* Check the IRDA mode parameter in the IRDA handle */ + assert_param(IS_IRDA_POWERMODE(hirda->Init.IrDAMode)); + + if(hirda->gState == HAL_IRDA_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hirda->Lock = HAL_UNLOCKED; + /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */ + HAL_IRDA_MspInit(hirda); + } + + hirda->gState = HAL_IRDA_STATE_BUSY; + + /* Disable the IRDA peripheral */ + __HAL_IRDA_DISABLE(hirda); + + /* Set the IRDA communication parameters */ + IRDA_SetConfig(hirda); + + /* In IrDA mode, the following bits must be kept cleared: + - LINEN, STOP and CLKEN bits in the USART_CR2 register, + - SCEN and HDSEL bits in the USART_CR3 register.*/ + CLEAR_BIT(hirda->Instance->CR3, USART_CR2_LINEN | USART_CR2_STOP | USART_CR2_CLKEN); + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_SCEN | USART_CR3_HDSEL); + + /* Enable the IRDA peripheral */ + __HAL_IRDA_ENABLE(hirda); + + /* Set the prescaler */ + MODIFY_REG(hirda->Instance->GTPR, USART_GTPR_PSC, hirda->Init.Prescaler); + + /* Configure the IrDA mode */ + MODIFY_REG(hirda->Instance->CR3, USART_CR3_IRLP, hirda->Init.IrDAMode); + + /* Enable the IrDA mode by setting the IREN bit in the CR3 register */ + SET_BIT(hirda->Instance->CR3, USART_CR3_IREN); + + /* Initialize the IRDA state*/ + hirda->ErrorCode = HAL_IRDA_ERROR_NONE; + hirda->gState= HAL_IRDA_STATE_READY; + hirda->RxState= HAL_IRDA_STATE_READY; + + return HAL_OK; +} + +/** + * @brief DeInitializes the IRDA peripheral + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_IRDA_DeInit(IRDA_HandleTypeDef *hirda) +{ + /* Check the IRDA handle allocation */ + if(hirda == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_IRDA_INSTANCE(hirda->Instance)); + + hirda->gState = HAL_IRDA_STATE_BUSY; + + /* Disable the Peripheral */ + __HAL_IRDA_DISABLE(hirda); + + /* DeInit the low level hardware */ + HAL_IRDA_MspDeInit(hirda); + + hirda->ErrorCode = HAL_IRDA_ERROR_NONE; + + hirda->gState = HAL_IRDA_STATE_RESET; + hirda->RxState = HAL_IRDA_STATE_RESET; + + /* Release Lock */ + __HAL_UNLOCK(hirda); + + return HAL_OK; +} + +/** + * @brief IRDA MSP Init. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval None + */ +__weak void HAL_IRDA_MspInit(IRDA_HandleTypeDef *hirda) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hirda); + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_IRDA_MspInit could be implemented in the user file + */ +} + +/** + * @brief IRDA MSP DeInit. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval None + */ +__weak void HAL_IRDA_MspDeInit(IRDA_HandleTypeDef *hirda) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hirda); + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_IRDA_MspDeInit could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup IRDA_Exported_Functions_Group2 IO operation functions + * @brief IRDA Transmit/Receive functions + * +@verbatim + =============================================================================== + ##### IO operation functions ##### + =============================================================================== + This subsection provides a set of functions allowing to manage the IRDA data transfers. + [..] + IrDA is a half duplex communication protocol. If the Transmitter is busy, any data + on the IrDA receive line will be ignored by the IrDA decoder and if the Receiver + is busy, data on the TX from the USART to IrDA will not be encoded by IrDA. + While receiving data, transmission should be avoided as the data to be transmitted + could be corrupted. + + (#) 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 APIs return the HAL status. + The end of the data processing will be indicated through the + dedicated IRDA IRQ when using Interrupt mode or the DMA IRQ when + using DMA mode. + The HAL_IRDA_TxCpltCallback(), HAL_IRDA_RxCpltCallback() user callbacks + will be executed respectively at the end of the transmit or Receive process + The HAL_IRDA_ErrorCallback() user callback will be executed when a communication error is detected + + (#) Blocking mode API's are : + (++) HAL_IRDA_Transmit() + (++) HAL_IRDA_Receive() + + (#) Non Blocking mode APIs with Interrupt are : + (++) HAL_IRDA_Transmit_IT() + (++) HAL_IRDA_Receive_IT() + (++) HAL_IRDA_IRQHandler() + + (#) Non Blocking mode functions with DMA are : + (++) HAL_IRDA_Transmit_DMA() + (++) HAL_IRDA_Receive_DMA() + + (#) A set of Transfer Complete Callbacks are provided in non Blocking mode: + (++) HAL_IRDA_TxCpltCallback() + (++) HAL_IRDA_RxCpltCallback() + (++) HAL_IRDA_ErrorCallback() + +@endverbatim + * @{ + */ + +/** + * @brief Sends an amount of data in blocking mode. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @param pData: Pointer to data buffer + * @param Size: Amount of data to be sent + * @param Timeout: Specify timeout value + * @retval HAL status + */ +HAL_StatusTypeDef HAL_IRDA_Transmit(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint16_t* tmp; + uint32_t tickstart = 0; + + /* Check that a Tx process is not already ongoing */ + if(hirda->gState == HAL_IRDA_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hirda); + + hirda->ErrorCode = HAL_IRDA_ERROR_NONE; + hirda->gState = HAL_IRDA_STATE_BUSY_TX; + + /* Init tickstart for timeout managment*/ + tickstart = HAL_GetTick(); + + hirda->TxXferSize = Size; + hirda->TxXferCount = Size; + while(hirda->TxXferCount > 0U) + { + hirda->TxXferCount--; + if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B) + { + if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + tmp = (uint16_t*) pData; + hirda->Instance->DR = (*tmp & (uint16_t)0x01FFU); + if(hirda->Init.Parity == IRDA_PARITY_NONE) + { + pData +=2U; + } + else + { + pData +=1U; + } + } + else + { + if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + hirda->Instance->DR = (*pData++ & (uint8_t)0xFFU); + } + } + + if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* At end of Tx process, restore hirda->gState to Ready */ + hirda->gState = HAL_IRDA_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hirda); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive an amount of data in blocking mode. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @param pData: Pointer to data buffer + * @param Size: Amount of data to be received + * @param Timeout: Specify timeout value + * @retval HAL status + */ +HAL_StatusTypeDef HAL_IRDA_Receive(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + uint16_t* tmp; + uint32_t tickstart = 0; + + /* Check that a Rx process is not already ongoing */ + if(hirda->RxState == HAL_IRDA_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hirda); + + hirda->ErrorCode = HAL_IRDA_ERROR_NONE; + hirda->RxState = HAL_IRDA_STATE_BUSY_RX; + + /* Init tickstart for timeout managment*/ + tickstart = HAL_GetTick(); + + hirda->RxXferSize = Size; + hirda->RxXferCount = Size; + /* Check the remain data to be received */ + while(hirda->RxXferCount > 0U) + { + hirda->RxXferCount--; + if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B) + { + if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + tmp = (uint16_t*) pData ; + if(hirda->Init.Parity == IRDA_PARITY_NONE) + { + *tmp = (uint16_t)(hirda->Instance->DR & (uint16_t)0x01FFU); + pData +=2U; + } + else + { + *tmp = (uint16_t)(hirda->Instance->DR & (uint16_t)0x00FFU); + pData +=1U; + } + } + else + { + if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + if(hirda->Init.Parity == IRDA_PARITY_NONE) + { + *pData++ = (uint8_t)(hirda->Instance->DR & (uint8_t)0x00FFU); + } + else + { + *pData++ = (uint8_t)(hirda->Instance->DR & (uint8_t)0x007FU); + } + } + } + + /* At end of Rx process, restore hirda->RxState to Ready */ + hirda->RxState = HAL_IRDA_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hirda); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Send an amount of data in non blocking mode. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @param pData: Pointer to data buffer + * @param Size: Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size) +{ + /* Check that a Tx process is not already ongoing */ + if(hirda->gState == HAL_IRDA_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + /* Process Locked */ + __HAL_LOCK(hirda); + + hirda->pTxBuffPtr = pData; + hirda->TxXferSize = Size; + hirda->TxXferCount = Size; + hirda->ErrorCode = HAL_IRDA_ERROR_NONE; + hirda->gState = HAL_IRDA_STATE_BUSY_TX; + + /* Process Unlocked */ + __HAL_UNLOCK(hirda); + + /* Enable the IRDA Transmit Data Register Empty Interrupt */ + SET_BIT(hirda->Instance->CR1, USART_CR1_TXEIE); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receives an amount of data in non blocking mode. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @param pData: Pointer to data buffer + * @param Size: Amount of data to be received + * @retval HAL status + */ +HAL_StatusTypeDef HAL_IRDA_Receive_IT(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size) +{ + /* Check that a Rx process is not already ongoing */ + if(hirda->RxState == HAL_IRDA_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hirda); + + hirda->pRxBuffPtr = pData; + hirda->RxXferSize = Size; + hirda->RxXferCount = Size; + hirda->ErrorCode = HAL_IRDA_ERROR_NONE; + hirda->RxState = HAL_IRDA_STATE_BUSY_RX; + + /* Process Unlocked */ + __HAL_UNLOCK(hirda); + + /* Enable the IRDA Data Register not empty Interrupt */ + SET_BIT(hirda->Instance->CR1, USART_CR1_RXNEIE); + + /* Enable the IRDA Parity Error Interrupt */ + SET_BIT(hirda->Instance->CR1, USART_CR1_PEIE); + + /* Enable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */ + SET_BIT(hirda->Instance->CR3, USART_CR3_EIE); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Sends an amount of data in non blocking mode. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @param pData: Pointer to data buffer + * @param Size: Amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_IRDA_Transmit_DMA(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size) +{ + uint32_t *tmp; + + /* Check that a Tx process is not already ongoing */ + if(hirda->gState == HAL_IRDA_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hirda); + + hirda->pTxBuffPtr = pData; + hirda->TxXferSize = Size; + hirda->TxXferCount = Size; + hirda->ErrorCode = HAL_IRDA_ERROR_NONE; + hirda->gState = HAL_IRDA_STATE_BUSY_TX; + + /* Set the IRDA DMA transfer complete callback */ + hirda->hdmatx->XferCpltCallback = IRDA_DMATransmitCplt; + + /* Set the IRDA DMA half transfer complete callback */ + hirda->hdmatx->XferHalfCpltCallback = IRDA_DMATransmitHalfCplt; + + /* Set the DMA error callback */ + hirda->hdmatx->XferErrorCallback = IRDA_DMAError; + + /* Set the DMA abort callback */ + hirda->hdmatx->XferAbortCallback = NULL; + + /* Enable the IRDA transmit DMA Stream */ + tmp = (uint32_t*)&pData; + HAL_DMA_Start_IT(hirda->hdmatx, *(uint32_t*)tmp, (uint32_t)&hirda->Instance->DR, Size); + + /* Clear the TC flag in the SR register by writing 0 to it */ + __HAL_IRDA_CLEAR_FLAG(hirda, IRDA_FLAG_TC); + + /* Process Unlocked */ + __HAL_UNLOCK(hirda); + + /* Enable the DMA transfer for transmit request by setting the DMAT bit + in the USART CR3 register */ + SET_BIT(hirda->Instance->CR3, USART_CR3_DMAT); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receives an amount of data in non blocking mode. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @param pData: Pointer to data buffer + * @param Size: Amount of data to be received + * @note When the IRDA parity is enabled (PCE = 1) the data received contain the parity bit. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_IRDA_Receive_DMA(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size) +{ + uint32_t *tmp; + + /* Check that a Rx process is not already ongoing */ + if(hirda->RxState == HAL_IRDA_STATE_READY) + { + if((pData == NULL) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hirda); + + hirda->pRxBuffPtr = pData; + hirda->RxXferSize = Size; + hirda->ErrorCode = HAL_IRDA_ERROR_NONE; + hirda->RxState = HAL_IRDA_STATE_BUSY_RX; + + /* Set the IRDA DMA transfer complete callback */ + hirda->hdmarx->XferCpltCallback = IRDA_DMAReceiveCplt; + + /* Set the IRDA DMA half transfer complete callback */ + hirda->hdmarx->XferHalfCpltCallback = IRDA_DMAReceiveHalfCplt; + + /* Set the DMA error callback */ + hirda->hdmarx->XferErrorCallback = IRDA_DMAError; + + /* Set the DMA abort callback */ + hirda->hdmarx->XferAbortCallback = NULL; + + /* Enable the DMA Stream */ + tmp = (uint32_t*)&pData; + HAL_DMA_Start_IT(hirda->hdmarx, (uint32_t)&hirda->Instance->DR, *(uint32_t*)tmp, Size); + + /* Process Unlocked */ + __HAL_UNLOCK(hirda); + + /* Enable the IRDA Parity Error Interrupt */ + SET_BIT(hirda->Instance->CR1, USART_CR1_PEIE); + + /* Enable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */ + SET_BIT(hirda->Instance->CR3, USART_CR3_EIE); + + /* Enable the DMA transfer for the receiver request by setting the DMAR bit + in the USART CR3 register */ + SET_BIT(hirda->Instance->CR3, USART_CR3_DMAR); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Pauses the DMA Transfer. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_IRDA_DMAPause(IRDA_HandleTypeDef *hirda) +{ + uint32_t dmarequest = 0x00U; + + /* Process Locked */ + __HAL_LOCK(hirda); + + dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT); + if((hirda->gState == HAL_IRDA_STATE_BUSY_TX) && dmarequest) + { + /* Disable the IRDA DMA Tx request */ + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAT); + } + + dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR); + if((hirda->RxState == HAL_IRDA_STATE_BUSY_RX) && dmarequest) + { + /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */ + CLEAR_BIT(hirda->Instance->CR1, USART_CR1_PEIE); + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE); + + /* Disable the IRDA DMA Rx request */ + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hirda); + + return HAL_OK; +} + +/** + * @brief Resumes the DMA Transfer. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_IRDA_DMAResume(IRDA_HandleTypeDef *hirda) +{ + /* Process Locked */ + __HAL_LOCK(hirda); + + if(hirda->gState == HAL_IRDA_STATE_BUSY_TX) + { + /* Enable the IRDA DMA Tx request */ + SET_BIT(hirda->Instance->CR3, USART_CR3_DMAT); + } + if(hirda->RxState == HAL_IRDA_STATE_BUSY_RX) + { + /* Clear the Overrun flag before resuming the Rx transfer */ + __HAL_IRDA_CLEAR_OREFLAG(hirda); + + /* Reenable PE and ERR (Frame error, noise error, overrun error) interrupts */ + SET_BIT(hirda->Instance->CR1, USART_CR1_PEIE); + SET_BIT(hirda->Instance->CR3, USART_CR3_EIE); + + /* Enable the IRDA DMA Rx request */ + SET_BIT(hirda->Instance->CR3, USART_CR3_DMAR); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hirda); + + return HAL_OK; +} + +/** + * @brief Stops the DMA Transfer. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_IRDA_DMAStop(IRDA_HandleTypeDef *hirda) +{ + uint32_t dmarequest = 0x00U; + /* The Lock is not implemented on this API to allow the user application + to call the HAL IRDA API under callbacks HAL_IRDA_TxCpltCallback() / HAL_IRDA_RxCpltCallback(): + when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated + and the correspond call back is executed HAL_IRDA_TxCpltCallback() / HAL_IRDA_RxCpltCallback() + */ + + /* Stop IRDA DMA Tx request if ongoing */ + dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT); + if((hirda->gState == HAL_IRDA_STATE_BUSY_TX) && dmarequest) + { + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAT); + + /* Abort the IRDA DMA Tx channel */ + if(hirda->hdmatx != NULL) + { + HAL_DMA_Abort(hirda->hdmatx); + } + IRDA_EndTxTransfer(hirda); + } + + /* Stop IRDA DMA Rx request if ongoing */ + dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR); + if((hirda->RxState == HAL_IRDA_STATE_BUSY_RX) && dmarequest) + { + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR); + + /* Abort the IRDA DMA Rx channel */ + if(hirda->hdmarx != NULL) + { + HAL_DMA_Abort(hirda->hdmarx); + } + IRDA_EndRxTransfer(hirda); + } + return HAL_OK; +} + +/** + * @brief This function handles IRDA interrupt request. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval None + */ +void HAL_IRDA_IRQHandler(IRDA_HandleTypeDef *hirda) +{ + uint32_t isrflags = READ_REG(hirda->Instance->SR); + uint32_t cr1its = READ_REG(hirda->Instance->CR1); + uint32_t cr3its = READ_REG(hirda->Instance->CR3); + uint32_t errorflags = 0x00U; + uint32_t dmarequest = 0x00U; + + /* If no error occurs */ + errorflags = (isrflags & (uint32_t)(USART_SR_PE | USART_SR_FE | USART_SR_ORE | USART_SR_NE)); + if(errorflags == RESET) + { + /* IRDA in mode Receiver -----------------------------------------------*/ + if(((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)) + { + IRDA_Receive_IT(hirda); + return; + } + } + + /* If some errors occur */ + if((errorflags != RESET) && ((cr3its & (USART_CR3_EIE | USART_CR1_PEIE)) != RESET)) + { + /* IRDA parity error interrupt occurred -------------------------------*/ + if(((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET)) + { + hirda->ErrorCode |= HAL_IRDA_ERROR_PE; + } + + /* IRDA noise error interrupt occurred --------------------------------*/ + if(((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)) + { + hirda->ErrorCode |= HAL_IRDA_ERROR_NE; + } + + /* IRDA frame error interrupt occurred --------------------------------*/ + if(((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)) + { + hirda->ErrorCode |= HAL_IRDA_ERROR_FE; + } + + /* IRDA Over-Run interrupt occurred -----------------------------------*/ + if(((isrflags & USART_SR_ORE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)) + { + hirda->ErrorCode |= HAL_IRDA_ERROR_ORE; + } + /* Call IRDA Error Call back function if need be -----------------------*/ + if(hirda->ErrorCode != HAL_IRDA_ERROR_NONE) + { + /* IRDA in mode Receiver ---------------------------------------------*/ + if(((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)) + { + IRDA_Receive_IT(hirda); + } + + dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR); + /* If Overrun error occurs, or if any error occurs in DMA mode reception, + consider error as blocking */ + if(((hirda->ErrorCode & HAL_IRDA_ERROR_ORE) != RESET) || dmarequest) + { + /* Blocking error : transfer is aborted + Set the IRDA state ready to be able to start again the process, + Disable Rx Interrupts, and disable Rx DMA request, if ongoing */ + IRDA_EndRxTransfer(hirda); + + /* Disable the IRDA DMA Rx request if enabled */ + if(HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR)) + { + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR); + + /* Abort the IRDA DMA Rx channel */ + if(hirda->hdmarx != NULL) + { + /* Set the IRDA DMA Abort callback : + will lead to call HAL_IRDA_ErrorCallback() at end of DMA abort procedure */ + hirda->hdmarx->XferAbortCallback = IRDA_DMAAbortOnError; + + if(HAL_DMA_Abort_IT(hirda->hdmarx) != HAL_OK) + { + /* Call Directly XferAbortCallback function in case of error */ + hirda->hdmarx->XferAbortCallback(hirda->hdmarx); + } + } + else + { + /* Call user error callback */ + HAL_IRDA_ErrorCallback(hirda); + } + } + else + { + /* Call user error callback */ + HAL_IRDA_ErrorCallback(hirda); + } + } + else + { + /* Non Blocking error : transfer could go on. + Error is notified to user through user error callback */ + HAL_IRDA_ErrorCallback(hirda); + hirda->ErrorCode = HAL_IRDA_ERROR_NONE; + } + } + return; + } /* End if some error occurs */ + + /* IRDA in mode Transmitter ------------------------------------------------*/ + if(((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET)) + { + IRDA_Transmit_IT(hirda); + return; + } + + /* IRDA in mode Transmitter end --------------------------------------------*/ + if(((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET)) + { + IRDA_EndTransmit_IT(hirda); + return; + } +} + +/** + * @brief End ongoing Tx transfer on IRDA peripheral (following error detection or Transmit completion). + * @param hirda: IRDA handle. + * @retval None + */ +static void IRDA_EndTxTransfer(IRDA_HandleTypeDef *hirda) +{ + /* Disable TXEIE and TCIE interrupts */ + CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE)); + + /* At end of Tx process, restore hirda->gState to Ready */ + hirda->gState = HAL_IRDA_STATE_READY; +} + +/** + * @brief End ongoing Rx transfer on IRDA peripheral (following error detection or Reception completion). + * @param hirda: IRDA handle. + * @retval None + */ +static void IRDA_EndRxTransfer(IRDA_HandleTypeDef *hirda) +{ + /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ + CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE); + + /* At end of Rx process, restore hirda->RxState to Ready */ + hirda->RxState = HAL_IRDA_STATE_READY; +} + +/** + * @brief DMA IRDA communication abort callback, when initiated by HAL services on Error + * (To be called at end of DMA Abort procedure following error occurrence). + * @param hdma DMA handle. + * @retval None + */ +static void IRDA_DMAAbortOnError(DMA_HandleTypeDef *hdma) +{ + IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + hirda->RxXferCount = 0x00U; + hirda->TxXferCount = 0x00U; + + HAL_IRDA_ErrorCallback(hirda); +} + +/** + * @brief Tx Transfer complete callbacks. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval None + */ +__weak void HAL_IRDA_TxCpltCallback(IRDA_HandleTypeDef *hirda) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hirda); + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_IRDA_TxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Tx Half Transfer completed callbacks. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified USART module. + * @retval None + */ +__weak void HAL_IRDA_TxHalfCpltCallback(IRDA_HandleTypeDef *hirda) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hirda); + /* NOTE: This function Should not be modified, when the callback is needed, + the HAL_IRDA_TxHalfCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Rx Transfer complete callbacks. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval None + */ +__weak void HAL_IRDA_RxCpltCallback(IRDA_HandleTypeDef *hirda) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hirda); + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_IRDA_RxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Rx Half Transfer complete callbacks. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval None + */ +__weak void HAL_IRDA_RxHalfCpltCallback(IRDA_HandleTypeDef *hirda) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hirda); + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_IRDA_RxHalfCpltCallback could be implemented in the user file + */ +} + +/** + * @brief IRDA error callbacks. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval None + */ +__weak void HAL_IRDA_ErrorCallback(IRDA_HandleTypeDef *hirda) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hirda); + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_IRDA_ErrorCallback could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup IRDA_Exported_Functions_Group3 Peripheral State and Errors functions + * @brief IRDA State and Errors functions + * +@verbatim + ============================================================================== + ##### Peripheral State and Errors functions ##### + ============================================================================== + [..] + This subsection provides a set of functions allowing to return the State of IrDA + communication process and also return Peripheral Errors occurred during communication process + (+) HAL_IRDA_GetState() API can be helpful to check in run-time the state of the IrDA peripheral. + (+) HAL_IRDA_GetError() check in run-time errors that could be occurred during communication. + +@endverbatim + * @{ + */ + +/** + * @brief Returns the IRDA state. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval HAL state + */ +HAL_IRDA_StateTypeDef HAL_IRDA_GetState(IRDA_HandleTypeDef *hirda) +{ + uint32_t temp1 = 0x00U, temp2 = 0x00U; + temp1 = hirda->gState; + temp2 = hirda->RxState; + + return (HAL_IRDA_StateTypeDef)(temp1 | temp2); +} + +/** + * @brief Return the IARDA error code + * @param hirda : pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA. + * @retval IRDA Error Code + */ +uint32_t HAL_IRDA_GetError(IRDA_HandleTypeDef *hirda) +{ + return hirda->ErrorCode; +} + +/** + * @} + */ + +/** + * @brief DMA IRDA transmit process complete callback. + * @param hdma : DMA handle + * @retval None + */ +static void IRDA_DMATransmitCplt(DMA_HandleTypeDef *hdma) +{ + IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + /* DMA Normal mode */ + if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U) + { + hirda->TxXferCount = 0U; + + /* Disable the DMA transfer for transmit request by setting the DMAT bit + in the IRDA CR3 register */ + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAT); + + /* Enable the IRDA Transmit Complete Interrupt */ + SET_BIT(hirda->Instance->CR1, USART_CR1_TCIE); + } + /* DMA Circular mode */ + else + { + HAL_IRDA_TxCpltCallback(hirda); + } +} + +/** + * @brief DMA IRDA 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 IRDA_DMATransmitHalfCplt(DMA_HandleTypeDef *hdma) +{ + IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + HAL_IRDA_TxHalfCpltCallback(hirda); +} + +/** + * @brief DMA IRDA receive process complete callback. + * @param hdma: DMA handle + * @retval None + */ +static void IRDA_DMAReceiveCplt(DMA_HandleTypeDef *hdma) +{ + IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + /* DMA Normal mode */ + if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U) + { + hirda->RxXferCount = 0U; + + /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */ + CLEAR_BIT(hirda->Instance->CR1, USART_CR1_PEIE); + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE); + + /* Disable the DMA transfer for the receiver request by setting the DMAR bit + in the IRDA CR3 register */ + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR); + + /* At end of Rx process, restore hirda->RxState to Ready */ + hirda->RxState = HAL_IRDA_STATE_READY; + } + + HAL_IRDA_RxCpltCallback(hirda); +} + +/** + * @brief DMA IRDA 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 IRDA_DMAReceiveHalfCplt(DMA_HandleTypeDef *hdma) +{ + IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + HAL_IRDA_RxHalfCpltCallback(hirda); +} + +/** + * @brief DMA IRDA communication error callback. + * @param hdma: DMA handle + * @retval None + */ +static void IRDA_DMAError(DMA_HandleTypeDef *hdma) +{ + uint32_t dmarequest = 0x00U; + IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Stop IRDA DMA Tx request if ongoing */ + dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT); + if((hirda->gState == HAL_IRDA_STATE_BUSY_TX) && dmarequest) + { + hirda->TxXferCount = 0U; + IRDA_EndTxTransfer(hirda); + } + + /* Stop IRDA DMA Rx request if ongoing */ + dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR); + if((hirda->RxState == HAL_IRDA_STATE_BUSY_RX) && dmarequest) + { + hirda->RxXferCount = 0U; + IRDA_EndRxTransfer(hirda); + } + + hirda->ErrorCode |= HAL_IRDA_ERROR_DMA; + + HAL_IRDA_ErrorCallback(hirda); +} + +/** + * @brief This function handles IRDA Communication Timeout. + * @param hirda pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @param Flag specifies the IRDA flag to check. + * @param Status The new Flag status (SET or RESET). + * @param Tickstart Tick start value + * @param Timeout Timeout duration + * @retval HAL status + */ +static HAL_StatusTypeDef IRDA_WaitOnFlagUntilTimeout(IRDA_HandleTypeDef *hirda, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout) +{ + /* Wait until flag is set */ + while((__HAL_IRDA_GET_FLAG(hirda, Flag) ? SET : RESET) == Status) + { + /* Check for the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U)||((HAL_GetTick() - Tickstart ) > Timeout)) + { + /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */ + CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE)); + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE); + + hirda->gState = HAL_IRDA_STATE_READY; + hirda->RxState = HAL_IRDA_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hirda); + + return HAL_TIMEOUT; + } + } + } + return HAL_OK; +} + + /** + * @brief Send an amount of data in non blocking mode. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval HAL status + */ +static HAL_StatusTypeDef IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda) +{ + uint16_t* tmp; + + /* Check that a Tx process is ongoing */ + if(hirda->gState == HAL_IRDA_STATE_BUSY_TX) + { + if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B) + { + tmp = (uint16_t*) hirda->pTxBuffPtr; + hirda->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FFU); + if(hirda->Init.Parity == IRDA_PARITY_NONE) + { + hirda->pTxBuffPtr += 2U; + } + else + { + hirda->pTxBuffPtr += 1U; + } + } + else + { + hirda->Instance->DR = (uint8_t)(*hirda->pTxBuffPtr++ & (uint8_t)0x00FFU); + } + + if(--hirda->TxXferCount == 0U) + { + /* Disable the IRDA Transmit Data Register Empty Interrupt */ + CLEAR_BIT(hirda->Instance->CR1, USART_CR1_TXEIE); + + /* Enable the IRDA Transmit Complete Interrupt */ + SET_BIT(hirda->Instance->CR1, USART_CR1_TCIE); + } + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Wraps up transmission in non blocking mode. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval HAL status + */ +static HAL_StatusTypeDef IRDA_EndTransmit_IT(IRDA_HandleTypeDef *hirda) +{ + /* Disable the IRDA Transmit Complete Interrupt */ + CLEAR_BIT(hirda->Instance->CR1, USART_CR1_TCIE); + + /* Disable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */ + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE); + + /* Tx process is ended, restore hirda->gState to Ready */ + hirda->gState = HAL_IRDA_STATE_READY; + + HAL_IRDA_TxCpltCallback(hirda); + + return HAL_OK; +} + +/** + * @brief Receives an amount of data in non blocking mode. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval HAL status + */ +static HAL_StatusTypeDef IRDA_Receive_IT(IRDA_HandleTypeDef *hirda) +{ + uint16_t* tmp; + uint16_t uhdata; + + /* Check that a Rx process is ongoing */ + if(hirda->RxState == HAL_IRDA_STATE_BUSY_RX) + { + uhdata = (uint16_t) READ_REG(hirda->Instance->DR); + if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B) + { + tmp = (uint16_t*) hirda->pRxBuffPtr; + if(hirda->Init.Parity == IRDA_PARITY_NONE) + { + *tmp = (uint16_t)(uhdata & (uint16_t)0x01FFU); + hirda->pRxBuffPtr += 2U; + } + else + { + *tmp = (uint16_t)(uhdata & (uint16_t)0x00FFU); + hirda->pRxBuffPtr += 1U; + } + } + else + { + if(hirda->Init.Parity == IRDA_PARITY_NONE) + { + *hirda->pRxBuffPtr++ = (uint8_t)(uhdata & (uint8_t)0x00FFU); + } + else + { + *hirda->pRxBuffPtr++ = (uint8_t)(uhdata & (uint8_t)0x007FU); + } + } + + if(--hirda->RxXferCount == 0U) + { + /* Disable the IRDA Data Register not empty Interrupt */ + CLEAR_BIT(hirda->Instance->CR1, USART_CR1_RXNEIE); + + /* Disable the IRDA Parity Error Interrupt */ + CLEAR_BIT(hirda->Instance->CR1, USART_CR1_PEIE); + + /* Disable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */ + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE); + + /* Rx process is completed, restore hirda->RxState to Ready */ + hirda->RxState = HAL_IRDA_STATE_READY; + + HAL_IRDA_RxCpltCallback(hirda); + + return HAL_OK; + } + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Configures the IRDA peripheral. + * @param hirda: pointer to a IRDA_HandleTypeDef structure that contains + * the configuration information for the specified IRDA module. + * @retval None + */ +static void IRDA_SetConfig(IRDA_HandleTypeDef *hirda) +{ + /* Check the parameters */ + assert_param(IS_IRDA_INSTANCE(hirda->Instance)); + assert_param(IS_IRDA_BAUDRATE(hirda->Init.BaudRate)); + assert_param(IS_IRDA_WORD_LENGTH(hirda->Init.WordLength)); + assert_param(IS_IRDA_PARITY(hirda->Init.Parity)); + assert_param(IS_IRDA_MODE(hirda->Init.Mode)); + + /*-------------------------- IRDA CR2 Configuration ------------------------*/ + /* Clear STOP[13:12] bits */ + CLEAR_BIT(hirda->Instance->CR2, USART_CR2_STOP); + + /*-------------------------- USART CR1 Configuration -----------------------*/ + /* Clear M, PCE, PS, TE and RE bits */ + CLEAR_BIT(hirda->Instance->CR1, USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE); + + /* Configure the USART Word Length, Parity and mode: + Set the M bits according to hirda->Init.WordLength value + Set PCE and PS bits according to hirda->Init.Parity value + Set TE and RE bits according to hirda->Init.Mode value */ + /* Write to USART CR1 */ + SET_BIT(hirda->Instance->CR1, (uint32_t)hirda->Init.WordLength | hirda->Init.Parity | hirda->Init.Mode); + + /*-------------------------- USART CR3 Configuration -----------------------*/ + /* Clear CTSE and RTSE bits */ + CLEAR_BIT(hirda->Instance->CR3, USART_CR3_RTSE | USART_CR3_CTSE); + + /*-------------------------- USART BRR Configuration -----------------------*/ + if((hirda->Instance == USART1) || (hirda->Instance == USART6)) + { + SET_BIT(hirda->Instance->BRR, IRDA_BRR(HAL_RCC_GetPCLK2Freq(), hirda->Init.BaudRate)); + } + else + { + SET_BIT(hirda->Instance->BRR, IRDA_BRR(HAL_RCC_GetPCLK1Freq(), hirda->Init.BaudRate)); + } +} + +/** + * @} + */ + +#endif /* HAL_IRDA_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/