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  1. /**
  2.   ******************************************************************************
  3.   * @file    stm32f1xx_hal_irda.c
  4.   * @author  MCD Application Team
  5.   * @brief   IRDA HAL module driver.
  6.   *          This file provides firmware functions to manage the following
  7.   *          functionalities of the IrDA SIR ENDEC block (IrDA):
  8.   *           + Initialization and de-initialization functions
  9.   *           + IO operation functions
  10.   *           + Peripheral Control functions
  11.   *           + Peripheral State and Errors functions
  12.   @verbatim
  13.   ==============================================================================
  14.                         ##### How to use this driver #####
  15.   ==============================================================================
  16.   [..]
  17.     The IRDA HAL driver can be used as follows:
  18.  
  19.     (#) Declare a IRDA_HandleTypeDef handle structure (eg. IRDA_HandleTypeDef hirda).
  20.     (#) Initialize the IRDA low level resources by implementing the HAL_IRDA_MspInit() API:
  21.         (##) Enable the USARTx interface clock.
  22.         (##) IRDA pins configuration:
  23.             (+++) Enable the clock for the IRDA GPIOs.
  24.             (+++) Configure IRDA pins as alternate function pull-up.
  25.         (##) NVIC configuration if you need to use interrupt process (HAL_IRDA_Transmit_IT()
  26.              and HAL_IRDA_Receive_IT() APIs):
  27.             (+++) Configure the USARTx interrupt priority.
  28.             (+++) Enable the NVIC USART IRQ handle.
  29.         (##) DMA Configuration if you need to use DMA process (HAL_IRDA_Transmit_DMA()
  30.              and HAL_IRDA_Receive_DMA() APIs):
  31.             (+++) Declare a DMA handle structure for the Tx/Rx channel.
  32.             (+++) Enable the DMAx interface clock.
  33.             (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
  34.             (+++) Configure the DMA Tx/Rx channel.
  35.             (+++) Associate the initialized DMA handle to the IRDA DMA Tx/Rx handle.
  36.             (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx channel.
  37.             (+++) Configure the IRDAx interrupt priority and enable the NVIC USART IRQ handle
  38.                   (used for last byte sending completion detection in DMA non circular mode)
  39.  
  40.     (#) Program the Baud Rate, Word Length, Parity, IrDA Mode, Prescaler
  41.         and Mode(Receiver/Transmitter) in the hirda Init structure.
  42.  
  43.     (#) Initialize the IRDA registers by calling the HAL_IRDA_Init() API:
  44.         (++) This API configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)
  45.              by calling the customized HAL_IRDA_MspInit() API.
  46.  
  47.          -@@- The specific IRDA interrupts (Transmission complete interrupt,
  48.              RXNE interrupt and Error Interrupts) will be managed using the macros
  49.              __HAL_IRDA_ENABLE_IT() and __HAL_IRDA_DISABLE_IT() inside the transmit and receive process.
  50.  
  51.     (#) Three operation modes are available within this driver :
  52.  
  53.     *** Polling mode IO operation ***
  54.     =================================
  55.     [..]
  56.       (+) Send an amount of data in blocking mode using HAL_IRDA_Transmit()
  57.       (+) Receive an amount of data in blocking mode using HAL_IRDA_Receive()
  58.  
  59.     *** Interrupt mode IO operation ***
  60.     ===================================
  61.     [..]
  62.       (+) Send an amount of data in non blocking mode using HAL_IRDA_Transmit_IT()
  63.       (+) At transmission end of transfer HAL_IRDA_TxCpltCallback is executed and user can
  64.            add his own code by customization of function pointer HAL_IRDA_TxCpltCallback
  65.       (+) Receive an amount of data in non blocking mode using HAL_IRDA_Receive_IT()
  66.       (+) At reception end of transfer HAL_IRDA_RxCpltCallback is executed and user can
  67.            add his own code by customization of function pointer HAL_IRDA_RxCpltCallback
  68.       (+) In case of transfer Error, HAL_IRDA_ErrorCallback() function is executed and user can
  69.            add his own code by customization of function pointer HAL_IRDA_ErrorCallback
  70.  
  71.     *** DMA mode IO operation ***
  72.     =============================
  73.     [..]
  74.       (+) Send an amount of data in non blocking mode (DMA) using HAL_IRDA_Transmit_DMA()
  75.       (+) At transmission end of half transfer HAL_IRDA_TxHalfCpltCallback is executed and user can
  76.             add his own code by customization of function pointer HAL_IRDA_TxHalfCpltCallback
  77.       (+) At transmission end of transfer HAL_IRDA_TxCpltCallback is executed and user can
  78.            add his own code by customization of function pointer HAL_IRDA_TxCpltCallback
  79.       (+) Receive an amount of data in non blocking mode (DMA) using HAL_IRDA_Receive_DMA()
  80.       (+) At reception end of half transfer HAL_IRDA_RxHalfCpltCallback is executed and user can
  81.             add his own code by customization of function pointer HAL_IRDA_RxHalfCpltCallback
  82.       (+) At reception end of transfer HAL_IRDA_RxCpltCallback is executed and user can
  83.            add his own code by customization of function pointer HAL_IRDA_RxCpltCallback
  84.       (+) In case of transfer Error, HAL_IRDA_ErrorCallback() function is executed and user can
  85.            add his own code by customization of function pointer HAL_IRDA_ErrorCallback
  86.       (+) Pause the DMA Transfer using HAL_IRDA_DMAPause()
  87.       (+) Resume the DMA Transfer using HAL_IRDA_DMAResume()
  88.       (+) Stop the DMA Transfer using HAL_IRDA_DMAStop()
  89.  
  90.     *** IRDA HAL driver macros list ***
  91.     ===================================
  92.     [..]
  93.       Below the list of most used macros in IRDA HAL driver.
  94.  
  95.        (+) __HAL_IRDA_ENABLE: Enable the IRDA peripheral
  96.        (+) __HAL_IRDA_DISABLE: Disable the IRDA peripheral
  97.        (+) __HAL_IRDA_GET_FLAG : Check whether the specified IRDA flag is set or not
  98.        (+) __HAL_IRDA_CLEAR_FLAG : Clear the specified IRDA pending flag
  99.        (+) __HAL_IRDA_ENABLE_IT: Enable the specified IRDA interrupt
  100.        (+) __HAL_IRDA_DISABLE_IT: Disable the specified IRDA interrupt
  101.        (+) __HAL_IRDA_GET_IT_SOURCE: Check whether the specified IRDA interrupt has occurred or not
  102.  
  103.     [..]
  104.      (@) You can refer to the IRDA HAL driver header file for more useful macros
  105.  
  106.     ##### Callback registration #####
  107.     ==================================
  108.  
  109.     [..]
  110.       The compilation define USE_HAL_IRDA_REGISTER_CALLBACKS when set to 1
  111.       allows the user to configure dynamically the driver callbacks.
  112.  
  113.     [..]
  114.       Use Function @ref HAL_IRDA_RegisterCallback() to register a user callback.
  115.       Function @ref HAL_IRDA_RegisterCallback() allows to register following callbacks:
  116.        (+) TxHalfCpltCallback        : Tx Half Complete Callback.
  117.        (+) TxCpltCallback            : Tx Complete Callback.
  118.        (+) RxHalfCpltCallback        : Rx Half Complete Callback.
  119.        (+) RxCpltCallback            : Rx Complete Callback.
  120.        (+) ErrorCallback             : Error Callback.
  121.        (+) AbortCpltCallback         : Abort Complete Callback.
  122.        (+) AbortTransmitCpltCallback : Abort Transmit Complete Callback.
  123.        (+) AbortReceiveCpltCallback  : Abort Receive Complete Callback.
  124.        (+) MspInitCallback           : IRDA MspInit.
  125.        (+) MspDeInitCallback         : IRDA MspDeInit.
  126.       This function takes as parameters the HAL peripheral handle, the Callback ID
  127.       and a pointer to the user callback function.
  128.  
  129.     [..]
  130.       Use function @ref HAL_IRDA_UnRegisterCallback() to reset a callback to the default
  131.       weak (surcharged) function.
  132.       @ref HAL_IRDA_UnRegisterCallback() takes as parameters the HAL peripheral handle,
  133.       and the Callback ID.
  134.       This function allows to reset following callbacks:
  135.        (+) TxHalfCpltCallback        : Tx Half Complete Callback.
  136.        (+) TxCpltCallback            : Tx Complete Callback.
  137.        (+) RxHalfCpltCallback        : Rx Half Complete Callback.
  138.        (+) RxCpltCallback            : Rx Complete Callback.
  139.        (+) ErrorCallback             : Error Callback.
  140.        (+) AbortCpltCallback         : Abort Complete Callback.
  141.        (+) AbortTransmitCpltCallback : Abort Transmit Complete Callback.
  142.        (+) AbortReceiveCpltCallback  : Abort Receive Complete Callback.
  143.        (+) MspInitCallback           : IRDA MspInit.
  144.        (+) MspDeInitCallback         : IRDA MspDeInit.
  145.  
  146.     [..]
  147.       By default, after the @ref HAL_IRDA_Init() and when the state is HAL_IRDA_STATE_RESET
  148.       all callbacks are set to the corresponding weak (surcharged) functions:
  149.       examples @ref HAL_IRDA_TxCpltCallback(), @ref HAL_IRDA_RxHalfCpltCallback().
  150.       Exception done for MspInit and MspDeInit functions that are respectively
  151.       reset to the legacy weak (surcharged) functions in the @ref HAL_IRDA_Init()
  152.       and @ref HAL_IRDA_DeInit() only when these callbacks are null (not registered beforehand).
  153.       If not, MspInit or MspDeInit are not null, the @ref HAL_IRDA_Init() and @ref HAL_IRDA_DeInit()
  154.       keep and use the user MspInit/MspDeInit callbacks (registered beforehand).
  155.  
  156.     [..]
  157.       Callbacks can be registered/unregistered in HAL_IRDA_STATE_READY state only.
  158.       Exception done MspInit/MspDeInit that can be registered/unregistered
  159.       in HAL_IRDA_STATE_READY or HAL_IRDA_STATE_RESET state, thus registered (user)
  160.       MspInit/DeInit callbacks can be used during the Init/DeInit.
  161.       In that case first register the MspInit/MspDeInit user callbacks
  162.       using @ref HAL_IRDA_RegisterCallback() before calling @ref HAL_IRDA_DeInit()
  163.       or @ref HAL_IRDA_Init() function.
  164.  
  165.     [..]
  166.       When The compilation define USE_HAL_IRDA_REGISTER_CALLBACKS is set to 0 or
  167.       not defined, the callback registration feature is not available
  168.       and weak (surcharged) callbacks are used.
  169.  
  170.   @endverbatim
  171.      [..]
  172.        (@) Additionnal remark: If the parity is enabled, then the MSB bit of the data written
  173.            in the data register is transmitted but is changed by the parity bit.
  174.            Depending on the frame length defined by the M bit (8-bits or 9-bits),
  175.            the possible IRDA frame formats are as listed in the following table:
  176.     +-------------------------------------------------------------+
  177.     |   M bit |  PCE bit  |            IRDA frame                 |
  178.     |---------------------|---------------------------------------|
  179.     |    0    |    0      |    | SB | 8 bit data | 1 STB |        |
  180.     |---------|-----------|---------------------------------------|
  181.     |    0    |    1      |    | SB | 7 bit data | PB | 1 STB |   |
  182.     |---------|-----------|---------------------------------------|
  183.     |    1    |    0      |    | SB | 9 bit data | 1 STB |        |
  184.     |---------|-----------|---------------------------------------|
  185.     |    1    |    1      |    | SB | 8 bit data | PB | 1 STB |   |
  186.     +-------------------------------------------------------------+
  187.   ******************************************************************************
  188.   * @attention
  189.   *
  190.   * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  191.   * All rights reserved.</center></h2>
  192.   *
  193.   * This software component is licensed by ST under BSD 3-Clause license,
  194.   * the "License"; You may not use this file except in compliance with the
  195.   * License. You may obtain a copy of the License at:
  196.   *                        opensource.org/licenses/BSD-3-Clause
  197.   *
  198.   ******************************************************************************
  199.   */
  200.  
  201. /* Includes ------------------------------------------------------------------*/
  202. #include "stm32f1xx_hal.h"
  203.  
  204. /** @addtogroup STM32F1xx_HAL_Driver
  205.   * @{
  206.   */
  207.  
  208. /** @defgroup IRDA IRDA
  209.   * @brief HAL IRDA module driver
  210.   * @{
  211.   */
  212.  
  213. #ifdef HAL_IRDA_MODULE_ENABLED
  214.  
  215. /* Private typedef -----------------------------------------------------------*/
  216. /* Private define ------------------------------------------------------------*/
  217. /* Private constants ---------------------------------------------------------*/
  218. /* Private macro -------------------------------------------------------------*/
  219. /* Private variables ---------------------------------------------------------*/
  220. /* Private function prototypes -----------------------------------------------*/
  221. /** @addtogroup IRDA_Private_Functions
  222.   * @{
  223.   */
  224. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  225. void IRDA_InitCallbacksToDefault(IRDA_HandleTypeDef *hirda);
  226. #endif /* USE_HAL_IRDA_REGISTER_CALLBACKS */
  227. static void IRDA_SetConfig(IRDA_HandleTypeDef *hirda);
  228. static HAL_StatusTypeDef IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda);
  229. static HAL_StatusTypeDef IRDA_EndTransmit_IT(IRDA_HandleTypeDef *hirda);
  230. static HAL_StatusTypeDef IRDA_Receive_IT(IRDA_HandleTypeDef *hirda);
  231. static void IRDA_DMATransmitCplt(DMA_HandleTypeDef *hdma);
  232. static void IRDA_DMATransmitHalfCplt(DMA_HandleTypeDef *hdma);
  233. static void IRDA_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
  234. static void IRDA_DMAReceiveHalfCplt(DMA_HandleTypeDef *hdma);
  235. static void IRDA_DMAError(DMA_HandleTypeDef *hdma);
  236. static void IRDA_DMAAbortOnError(DMA_HandleTypeDef *hdma);
  237. static void IRDA_DMATxAbortCallback(DMA_HandleTypeDef *hdma);
  238. static void IRDA_DMARxAbortCallback(DMA_HandleTypeDef *hdma);
  239. static void IRDA_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
  240. static void IRDA_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
  241. static HAL_StatusTypeDef IRDA_WaitOnFlagUntilTimeout(IRDA_HandleTypeDef *hirda, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout);
  242. static void IRDA_EndTxTransfer(IRDA_HandleTypeDef *hirda);
  243. static void IRDA_EndRxTransfer(IRDA_HandleTypeDef *hirda);
  244. /**
  245.   * @}
  246.   */
  247.  
  248. /* Exported functions --------------------------------------------------------*/
  249. /** @defgroup IRDA_Exported_Functions IrDA Exported Functions
  250.   * @{
  251.   */
  252.  
  253. /** @defgroup IRDA_Exported_Functions_Group1 IrDA Initialization and de-initialization functions
  254.   *  @brief    Initialization and Configuration functions
  255.   *
  256. @verbatim
  257.  
  258.   ==============================================================================
  259.             ##### Initialization and Configuration functions #####
  260.   ==============================================================================
  261.     [..]
  262.     This subsection provides a set of functions allowing to initialize the USARTx or the UARTy
  263.     in asynchronous IrDA mode.
  264.       (+) For the asynchronous mode only these parameters can be configured:
  265.         (++) BaudRate
  266.         (++) WordLength
  267.         (++) Parity: If the parity is enabled, then the MSB bit of the data written
  268.              in the data register is transmitted but is changed by the parity bit.
  269.              Depending on the frame length defined by the M bit (8-bits or 9-bits),
  270.              please refer to Reference manual for possible IRDA frame formats.
  271.         (++) Prescaler: A pulse of width less than two and greater than one PSC period(s) may or may
  272.              not be rejected. The receiver set up time should be managed by software. The IrDA physical layer
  273.              specification specifies a minimum of 10 ms delay between transmission and
  274.              reception (IrDA is a half duplex protocol).
  275.         (++) Mode: Receiver/transmitter modes
  276.         (++) IrDAMode: the IrDA can operate in the Normal mode or in the Low power mode.
  277.     [..]
  278.     The HAL_IRDA_Init() API follows IRDA configuration procedures (details for the procedures
  279.     are available in reference manual).
  280.  
  281. @endverbatim
  282.   * @{
  283.   */
  284.  
  285. /**
  286.   * @brief  Initializes the IRDA mode according to the specified
  287.   *         parameters in the IRDA_InitTypeDef and create the associated handle.
  288.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  289.   *                the configuration information for the specified IRDA module.
  290.   * @retval HAL status
  291.   */
  292. HAL_StatusTypeDef HAL_IRDA_Init(IRDA_HandleTypeDef *hirda)
  293. {
  294.   /* Check the IRDA handle allocation */
  295.   if (hirda == NULL)
  296.   {
  297.     return HAL_ERROR;
  298.   }
  299.  
  300.   /* Check the IRDA instance parameters */
  301.   assert_param(IS_IRDA_INSTANCE(hirda->Instance));
  302.   /* Check the IRDA mode parameter in the IRDA handle */
  303.   assert_param(IS_IRDA_POWERMODE(hirda->Init.IrDAMode));
  304.  
  305.   if (hirda->gState == HAL_IRDA_STATE_RESET)
  306.   {
  307.     /* Allocate lock resource and initialize it */
  308.     hirda->Lock = HAL_UNLOCKED;
  309.  
  310. #if USE_HAL_IRDA_REGISTER_CALLBACKS == 1
  311.     IRDA_InitCallbacksToDefault(hirda);
  312.  
  313.     if (hirda->MspInitCallback == NULL)
  314.     {
  315.       hirda->MspInitCallback = HAL_IRDA_MspInit;
  316.     }
  317.  
  318.     /* Init the low level hardware */
  319.     hirda->MspInitCallback(hirda);
  320. #else
  321.     /* Init the low level hardware : GPIO, CLOCK */
  322.     HAL_IRDA_MspInit(hirda);
  323. #endif /* USE_HAL_IRDA_REGISTER_CALLBACKS */
  324.   }
  325.  
  326.   hirda->gState = HAL_IRDA_STATE_BUSY;
  327.  
  328.   /* Disable the IRDA peripheral */
  329.   __HAL_IRDA_DISABLE(hirda);
  330.  
  331.   /* Set the IRDA communication parameters */
  332.   IRDA_SetConfig(hirda);
  333.  
  334.   /* In IrDA mode, the following bits must be kept cleared:
  335.   - LINEN, STOP and CLKEN bits in the USART_CR2 register,
  336.   - SCEN and HDSEL bits in the USART_CR3 register.*/
  337.   CLEAR_BIT(hirda->Instance->CR2, (USART_CR2_LINEN | USART_CR2_STOP | USART_CR2_CLKEN));
  338.   CLEAR_BIT(hirda->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL));
  339.  
  340.   /* Enable the IRDA peripheral */
  341.   __HAL_IRDA_ENABLE(hirda);
  342.  
  343.   /* Set the prescaler */
  344.   MODIFY_REG(hirda->Instance->GTPR, USART_GTPR_PSC, hirda->Init.Prescaler);
  345.  
  346.   /* Configure the IrDA mode */
  347.   MODIFY_REG(hirda->Instance->CR3, USART_CR3_IRLP, hirda->Init.IrDAMode);
  348.  
  349.   /* Enable the IrDA mode by setting the IREN bit in the CR3 register */
  350.   SET_BIT(hirda->Instance->CR3, USART_CR3_IREN);
  351.  
  352.   /* Initialize the IRDA state*/
  353.   hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  354.   hirda->gState = HAL_IRDA_STATE_READY;
  355.   hirda->RxState = HAL_IRDA_STATE_READY;
  356.  
  357.   return HAL_OK;
  358. }
  359.  
  360. /**
  361.   * @brief  DeInitializes the IRDA peripheral
  362.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  363.   *                the configuration information for the specified IRDA module.
  364.   * @retval HAL status
  365.   */
  366. HAL_StatusTypeDef HAL_IRDA_DeInit(IRDA_HandleTypeDef *hirda)
  367. {
  368.   /* Check the IRDA handle allocation */
  369.   if (hirda == NULL)
  370.   {
  371.     return HAL_ERROR;
  372.   }
  373.  
  374.   /* Check the parameters */
  375.   assert_param(IS_IRDA_INSTANCE(hirda->Instance));
  376.  
  377.   hirda->gState = HAL_IRDA_STATE_BUSY;
  378.  
  379.   /* Disable the Peripheral */
  380.   __HAL_IRDA_DISABLE(hirda);
  381.  
  382.   /* DeInit the low level hardware */
  383. #if USE_HAL_IRDA_REGISTER_CALLBACKS == 1
  384.   if (hirda->MspDeInitCallback == NULL)
  385.   {
  386.     hirda->MspDeInitCallback = HAL_IRDA_MspDeInit;
  387.   }
  388.   /* DeInit the low level hardware */
  389.   hirda->MspDeInitCallback(hirda);
  390. #else
  391.   HAL_IRDA_MspDeInit(hirda);
  392. #endif /* USE_HAL_IRDA_REGISTER_CALLBACKS */
  393.  
  394.   hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  395.  
  396.   hirda->gState = HAL_IRDA_STATE_RESET;
  397.   hirda->RxState = HAL_IRDA_STATE_RESET;
  398.  
  399.   /* Release Lock */
  400.   __HAL_UNLOCK(hirda);
  401.  
  402.   return HAL_OK;
  403. }
  404.  
  405. /**
  406.   * @brief  IRDA MSP Init.
  407.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  408.   *                the configuration information for the specified IRDA module.
  409.   * @retval None
  410.   */
  411. __weak void HAL_IRDA_MspInit(IRDA_HandleTypeDef *hirda)
  412. {
  413.   /* Prevent unused argument(s) compilation warning */
  414.   UNUSED(hirda);
  415.  
  416.   /* NOTE: This function should not be modified, when the callback is needed,
  417.            the HAL_IRDA_MspInit can be implemented in the user file
  418.    */
  419. }
  420.  
  421. /**
  422.   * @brief  IRDA MSP DeInit.
  423.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  424.   *                the configuration information for the specified IRDA module.
  425.   * @retval None
  426.   */
  427. __weak void HAL_IRDA_MspDeInit(IRDA_HandleTypeDef *hirda)
  428. {
  429.   /* Prevent unused argument(s) compilation warning */
  430.   UNUSED(hirda);
  431.  
  432.   /* NOTE: This function should not be modified, when the callback is needed,
  433.            the HAL_IRDA_MspDeInit can be implemented in the user file
  434.    */
  435. }
  436.  
  437. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  438. /**
  439.   * @brief  Register a User IRDA Callback
  440.   *         To be used instead of the weak predefined callback
  441.   * @param  hirda irda handle
  442.   * @param  CallbackID ID of the callback to be registered
  443.   *         This parameter can be one of the following values:
  444.   *           @arg @ref HAL_IRDA_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
  445.   *           @arg @ref HAL_IRDA_TX_COMPLETE_CB_ID Tx Complete Callback ID
  446.   *           @arg @ref HAL_IRDA_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
  447.   *           @arg @ref HAL_IRDA_RX_COMPLETE_CB_ID Rx Complete Callback ID
  448.   *           @arg @ref HAL_IRDA_ERROR_CB_ID Error Callback ID
  449.   *           @arg @ref HAL_IRDA_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
  450.   *           @arg @ref HAL_IRDA_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID
  451.   *           @arg @ref HAL_IRDA_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID
  452.   *           @arg @ref HAL_IRDA_MSPINIT_CB_ID MspInit Callback ID
  453.   *           @arg @ref HAL_IRDA_MSPDEINIT_CB_ID MspDeInit Callback ID
  454.   * @param  pCallback pointer to the Callback function
  455.   * @retval HAL status
  456.   */
  457. HAL_StatusTypeDef HAL_IRDA_RegisterCallback(IRDA_HandleTypeDef *hirda, HAL_IRDA_CallbackIDTypeDef CallbackID, pIRDA_CallbackTypeDef pCallback)
  458. {
  459.   HAL_StatusTypeDef status = HAL_OK;
  460.  
  461.   if (pCallback == NULL)
  462.   {
  463.     /* Update the error code */
  464.     hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;
  465.  
  466.     return HAL_ERROR;
  467.   }
  468.   /* Process locked */
  469.   __HAL_LOCK(hirda);
  470.  
  471.   if (hirda->gState == HAL_IRDA_STATE_READY)
  472.   {
  473.     switch (CallbackID)
  474.     {
  475.       case HAL_IRDA_TX_HALFCOMPLETE_CB_ID :
  476.         hirda->TxHalfCpltCallback = pCallback;
  477.         break;
  478.  
  479.       case HAL_IRDA_TX_COMPLETE_CB_ID :
  480.         hirda->TxCpltCallback = pCallback;
  481.         break;
  482.  
  483.       case HAL_IRDA_RX_HALFCOMPLETE_CB_ID :
  484.         hirda->RxHalfCpltCallback = pCallback;
  485.         break;
  486.  
  487.       case HAL_IRDA_RX_COMPLETE_CB_ID :
  488.         hirda->RxCpltCallback = pCallback;
  489.         break;
  490.  
  491.       case HAL_IRDA_ERROR_CB_ID :
  492.         hirda->ErrorCallback = pCallback;
  493.         break;
  494.  
  495.       case HAL_IRDA_ABORT_COMPLETE_CB_ID :
  496.         hirda->AbortCpltCallback = pCallback;
  497.         break;
  498.  
  499.       case HAL_IRDA_ABORT_TRANSMIT_COMPLETE_CB_ID :
  500.         hirda->AbortTransmitCpltCallback = pCallback;
  501.         break;
  502.  
  503.       case HAL_IRDA_ABORT_RECEIVE_COMPLETE_CB_ID :
  504.         hirda->AbortReceiveCpltCallback = pCallback;
  505.         break;
  506.  
  507.       case HAL_IRDA_MSPINIT_CB_ID :
  508.         hirda->MspInitCallback = pCallback;
  509.         break;
  510.  
  511.       case HAL_IRDA_MSPDEINIT_CB_ID :
  512.         hirda->MspDeInitCallback = pCallback;
  513.         break;
  514.  
  515.       default :
  516.         /* Update the error code */
  517.         hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;
  518.  
  519.         /* Return error status */
  520.         status =  HAL_ERROR;
  521.         break;
  522.     }
  523.   }
  524.   else if (hirda->gState == HAL_IRDA_STATE_RESET)
  525.   {
  526.     switch (CallbackID)
  527.     {
  528.       case HAL_IRDA_MSPINIT_CB_ID :
  529.         hirda->MspInitCallback = pCallback;
  530.         break;
  531.  
  532.       case HAL_IRDA_MSPDEINIT_CB_ID :
  533.         hirda->MspDeInitCallback = pCallback;
  534.         break;
  535.  
  536.       default :
  537.         /* Update the error code */
  538.         hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;
  539.  
  540.         /* Return error status */
  541.         status =  HAL_ERROR;
  542.         break;
  543.     }
  544.   }
  545.   else
  546.   {
  547.     /* Update the error code */
  548.     hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;
  549.  
  550.     /* Return error status */
  551.     status =  HAL_ERROR;
  552.   }
  553.  
  554.   /* Release Lock */
  555.   __HAL_UNLOCK(hirda);
  556.  
  557.   return status;
  558. }
  559.  
  560. /**
  561.   * @brief  Unregister an IRDA callback
  562.   *         IRDA callback is redirected to the weak predefined callback
  563.   * @param  hirda irda handle
  564.   * @param  CallbackID ID of the callback to be unregistered
  565.   *         This parameter can be one of the following values:
  566.   *           @arg @ref HAL_IRDA_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
  567.   *           @arg @ref HAL_IRDA_TX_COMPLETE_CB_ID Tx Complete Callback ID
  568.   *           @arg @ref HAL_IRDA_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
  569.   *           @arg @ref HAL_IRDA_RX_COMPLETE_CB_ID Rx Complete Callback ID
  570.   *           @arg @ref HAL_IRDA_ERROR_CB_ID Error Callback ID
  571.   *           @arg @ref HAL_IRDA_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
  572.   *           @arg @ref HAL_IRDA_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID
  573.   *           @arg @ref HAL_IRDA_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID
  574.   *           @arg @ref HAL_IRDA_MSPINIT_CB_ID MspInit Callback ID
  575.   *           @arg @ref HAL_IRDA_MSPDEINIT_CB_ID MspDeInit Callback ID
  576.   * @retval HAL status
  577.   */
  578. HAL_StatusTypeDef HAL_IRDA_UnRegisterCallback(IRDA_HandleTypeDef *hirda, HAL_IRDA_CallbackIDTypeDef CallbackID)
  579. {
  580.   HAL_StatusTypeDef status = HAL_OK;
  581.  
  582.   /* Process locked */
  583.   __HAL_LOCK(hirda);
  584.  
  585.   if (HAL_IRDA_STATE_READY == hirda->gState)
  586.   {
  587.     switch (CallbackID)
  588.     {
  589.       case HAL_IRDA_TX_HALFCOMPLETE_CB_ID :
  590.         hirda->TxHalfCpltCallback = HAL_IRDA_TxHalfCpltCallback;               /* Legacy weak  TxHalfCpltCallback       */
  591.         break;
  592.  
  593.       case HAL_IRDA_TX_COMPLETE_CB_ID :
  594.         hirda->TxCpltCallback = HAL_IRDA_TxCpltCallback;                       /* Legacy weak TxCpltCallback            */
  595.         break;
  596.  
  597.       case HAL_IRDA_RX_HALFCOMPLETE_CB_ID :
  598.         hirda->RxHalfCpltCallback = HAL_IRDA_RxHalfCpltCallback;               /* Legacy weak RxHalfCpltCallback        */
  599.         break;
  600.  
  601.       case HAL_IRDA_RX_COMPLETE_CB_ID :
  602.         hirda->RxCpltCallback = HAL_IRDA_RxCpltCallback;                       /* Legacy weak RxCpltCallback            */
  603.         break;
  604.  
  605.       case HAL_IRDA_ERROR_CB_ID :
  606.         hirda->ErrorCallback = HAL_IRDA_ErrorCallback;                         /* Legacy weak ErrorCallback             */
  607.         break;
  608.  
  609.       case HAL_IRDA_ABORT_COMPLETE_CB_ID :
  610.         hirda->AbortCpltCallback = HAL_IRDA_AbortCpltCallback;                 /* Legacy weak AbortCpltCallback         */
  611.         break;
  612.  
  613.       case HAL_IRDA_ABORT_TRANSMIT_COMPLETE_CB_ID :
  614.         hirda->AbortTransmitCpltCallback = HAL_IRDA_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */
  615.         break;
  616.  
  617.       case HAL_IRDA_ABORT_RECEIVE_COMPLETE_CB_ID :
  618.         hirda->AbortReceiveCpltCallback = HAL_IRDA_AbortReceiveCpltCallback;   /* Legacy weak AbortReceiveCpltCallback  */
  619.         break;
  620.  
  621.       case HAL_IRDA_MSPINIT_CB_ID :
  622.         hirda->MspInitCallback = HAL_IRDA_MspInit;                             /* Legacy weak MspInitCallback           */
  623.         break;
  624.  
  625.       case HAL_IRDA_MSPDEINIT_CB_ID :
  626.         hirda->MspDeInitCallback = HAL_IRDA_MspDeInit;                         /* Legacy weak MspDeInitCallback         */
  627.         break;
  628.  
  629.       default :
  630.         /* Update the error code */
  631.         hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;
  632.  
  633.         /* Return error status */
  634.         status =  HAL_ERROR;
  635.         break;
  636.     }
  637.   }
  638.   else if (HAL_IRDA_STATE_RESET == hirda->gState)
  639.   {
  640.     switch (CallbackID)
  641.     {
  642.       case HAL_IRDA_MSPINIT_CB_ID :
  643.         hirda->MspInitCallback = HAL_IRDA_MspInit;
  644.         break;
  645.  
  646.       case HAL_IRDA_MSPDEINIT_CB_ID :
  647.         hirda->MspDeInitCallback = HAL_IRDA_MspDeInit;
  648.         break;
  649.  
  650.       default :
  651.         /* Update the error code */
  652.         hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;
  653.  
  654.         /* Return error status */
  655.         status =  HAL_ERROR;
  656.         break;
  657.     }
  658.   }
  659.   else
  660.   {
  661.     /* Update the error code */
  662.     hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;
  663.  
  664.     /* Return error status */
  665.     status =  HAL_ERROR;
  666.   }
  667.  
  668.   /* Release Lock */
  669.   __HAL_UNLOCK(hirda);
  670.  
  671.   return status;
  672. }
  673. #endif /* USE_HAL_IRDA_REGISTER_CALLBACKS */
  674.  
  675. /**
  676.   * @}
  677.   */
  678.  
  679. /** @defgroup IRDA_Exported_Functions_Group2 IO operation functions
  680.   *  @brief   IRDA Transmit and Receive functions
  681.   *
  682. @verbatim
  683.   ==============================================================================
  684.                       ##### IO operation functions #####
  685.   ==============================================================================
  686.     [..]
  687.     This subsection provides a set of functions allowing to manage the IRDA data transfers.
  688.     IrDA is a half duplex communication protocol. If the Transmitter is busy, any data
  689.     on the IrDA receive line will be ignored by the IrDA decoder and if the Receiver
  690.     is busy, data on the TX from the USART to IrDA will not be encoded by IrDA.
  691.     While receiving data, transmission should be avoided as the data to be transmitted
  692.     could be corrupted.
  693.  
  694.     (#) There are two modes of transfer:
  695.        (++) Blocking mode: The communication is performed in polling mode.
  696.             The HAL status of all data processing is returned by the same function
  697.             after finishing transfer.
  698.        (++) Non-Blocking mode: The communication is performed using Interrupts
  699.            or DMA, these API's return the HAL status.
  700.            The end of the data processing will be indicated through the
  701.            dedicated IRDA IRQ when using Interrupt mode or the DMA IRQ when
  702.            using DMA mode.
  703.            The HAL_IRDA_TxCpltCallback(), HAL_IRDA_RxCpltCallback() user callbacks
  704.            will be executed respectively at the end of the Transmit or Receive process
  705.            The HAL_IRDA_ErrorCallback() user callback will be executed when a communication error is detected
  706.  
  707.     (#) Blocking mode APIs are :
  708.         (++) HAL_IRDA_Transmit()
  709.         (++) HAL_IRDA_Receive()
  710.  
  711.     (#) Non Blocking mode APIs with Interrupt are :
  712.         (++) HAL_IRDA_Transmit_IT()
  713.         (++) HAL_IRDA_Receive_IT()
  714.         (++) HAL_IRDA_IRQHandler()
  715.  
  716.     (#) Non Blocking mode functions with DMA are :
  717.         (++) HAL_IRDA_Transmit_DMA()
  718.         (++) HAL_IRDA_Receive_DMA()
  719.         (++) HAL_IRDA_DMAPause()
  720.         (++) HAL_IRDA_DMAResume()
  721.         (++) HAL_IRDA_DMAStop()
  722.  
  723.     (#) A set of Transfer Complete Callbacks are provided in Non Blocking mode:
  724.         (++) HAL_IRDA_TxHalfCpltCallback()
  725.         (++) HAL_IRDA_TxCpltCallback()
  726.         (++) HAL_IRDA_RxHalfCpltCallback()
  727.         (++) HAL_IRDA_RxCpltCallback()
  728.         (++) HAL_IRDA_ErrorCallback()
  729.  
  730.     (#) Non-Blocking mode transfers could be aborted using Abort API's :
  731.         (+) HAL_IRDA_Abort()
  732.         (+) HAL_IRDA_AbortTransmit()
  733.         (+) HAL_IRDA_AbortReceive()
  734.         (+) HAL_IRDA_Abort_IT()
  735.         (+) HAL_IRDA_AbortTransmit_IT()
  736.         (+) HAL_IRDA_AbortReceive_IT()
  737.  
  738.     (#) For Abort services based on interrupts (HAL_IRDA_Abortxxx_IT), a set of Abort Complete Callbacks are provided:
  739.         (+) HAL_IRDA_AbortCpltCallback()
  740.         (+) HAL_IRDA_AbortTransmitCpltCallback()
  741.         (+) HAL_IRDA_AbortReceiveCpltCallback()
  742.  
  743.     (#) In Non-Blocking mode transfers, possible errors are split into 2 categories.
  744.         Errors are handled as follows :
  745.         (+) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is
  746.             to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception .
  747.             Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type,
  748.             and HAL_IRDA_ErrorCallback() user callback is executed. Transfer is kept ongoing on IRDA side.
  749.             If user wants to abort it, Abort services should be called by user.
  750.         (+) Error is considered as Blocking : Transfer could not be completed properly and is aborted.
  751.             This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode.
  752.             Error code is set to allow user to identify error type, and HAL_IRDA_ErrorCallback() user callback is executed.
  753.  
  754. @endverbatim
  755.   * @{
  756.   */
  757.  
  758. /**
  759.   * @brief Sends an amount of data in blocking mode.
  760.   * @note  When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
  761.   *        the sent data is handled as a set of u16. In this case, Size must reflect the number
  762.   *        of u16 available through pData.
  763.   * @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
  764.   *              the configuration information for the specified IRDA module.
  765.   * @param pData Pointer to data buffer (u8 or u16 data elements).
  766.   * @param Size  Amount of data elements (u8 or u16) to be sent.
  767.   * @param Timeout Specify timeout value.
  768.   * @retval HAL status
  769.   */
  770. HAL_StatusTypeDef HAL_IRDA_Transmit(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)
  771. {
  772.   uint16_t *tmp;
  773.   uint32_t tickstart = 0U;
  774.  
  775.   /* Check that a Tx process is not already ongoing */
  776.   if (hirda->gState == HAL_IRDA_STATE_READY)
  777.   {
  778.     if ((pData == NULL) || (Size == 0U))
  779.     {
  780.       return  HAL_ERROR;
  781.     }
  782.  
  783.     /* Process Locked */
  784.     __HAL_LOCK(hirda);
  785.  
  786.     hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  787.     hirda->gState = HAL_IRDA_STATE_BUSY_TX;
  788.  
  789.     /* Init tickstart for timeout managment*/
  790.     tickstart = HAL_GetTick();
  791.  
  792.     hirda->TxXferSize = Size;
  793.     hirda->TxXferCount = Size;
  794.     while (hirda->TxXferCount > 0U)
  795.     {
  796.       hirda->TxXferCount--;
  797.       if (hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
  798.       {
  799.         if (IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
  800.         {
  801.           return HAL_TIMEOUT;
  802.         }
  803.         tmp = (uint16_t *) pData;
  804.         hirda->Instance->DR = (*tmp & (uint16_t)0x01FF);
  805.         if (hirda->Init.Parity == IRDA_PARITY_NONE)
  806.         {
  807.           pData += 2U;
  808.         }
  809.         else
  810.         {
  811.           pData += 1U;
  812.         }
  813.       }
  814.       else
  815.       {
  816.         if (IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
  817.         {
  818.           return HAL_TIMEOUT;
  819.         }
  820.         hirda->Instance->DR = (*pData++ & (uint8_t)0xFF);
  821.       }
  822.     }
  823.  
  824.     if (IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
  825.     {
  826.       return HAL_TIMEOUT;
  827.     }
  828.  
  829.     /* At end of Tx process, restore hirda->gState to Ready */
  830.     hirda->gState = HAL_IRDA_STATE_READY;
  831.  
  832.     /* Process Unlocked */
  833.     __HAL_UNLOCK(hirda);
  834.  
  835.     return HAL_OK;
  836.   }
  837.   else
  838.   {
  839.     return HAL_BUSY;
  840.   }
  841. }
  842.  
  843. /**
  844.   * @brief Receive an amount of data in blocking mode.
  845.   * @note  When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
  846.   *        the received data is handled as a set of u16. In this case, Size must reflect the number
  847.   *        of u16 available through pData.
  848.   * @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
  849.   *              the configuration information for the specified IRDA module.
  850.   * @param pData Pointer to data buffer (u8 or u16 data elements).
  851.   * @param Size  Amount of data elements (u8 or u16) to be received.
  852.   * @param Timeout Specify timeout value
  853.   * @retval HAL status
  854.   */
  855. HAL_StatusTypeDef HAL_IRDA_Receive(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)
  856. {
  857.   uint16_t *tmp;
  858.   uint32_t tickstart = 0U;
  859.  
  860.   /* Check that a Rx process is not already ongoing */
  861.   if (hirda->RxState == HAL_IRDA_STATE_READY)
  862.   {
  863.     if ((pData == NULL) || (Size == 0U))
  864.     {
  865.       return  HAL_ERROR;
  866.     }
  867.  
  868.     /* Process Locked */
  869.     __HAL_LOCK(hirda);
  870.  
  871.     hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  872.     hirda->RxState = HAL_IRDA_STATE_BUSY_RX;
  873.  
  874.     /* Init tickstart for timeout managment*/
  875.     tickstart = HAL_GetTick();
  876.  
  877.     hirda->RxXferSize = Size;
  878.     hirda->RxXferCount = Size;
  879.  
  880.     /* Check the remain data to be received */
  881.     while (hirda->RxXferCount > 0U)
  882.     {
  883.       hirda->RxXferCount--;
  884.  
  885.       if (hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
  886.       {
  887.         if (IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
  888.         {
  889.           return HAL_TIMEOUT;
  890.         }
  891.         tmp = (uint16_t *) pData ;
  892.         if (hirda->Init.Parity == IRDA_PARITY_NONE)
  893.         {
  894.           *tmp = (uint16_t)(hirda->Instance->DR & (uint16_t)0x01FF);
  895.           pData += 2U;
  896.         }
  897.         else
  898.         {
  899.           *tmp = (uint16_t)(hirda->Instance->DR & (uint16_t)0x00FF);
  900.           pData += 1U;
  901.         }
  902.       }
  903.       else
  904.       {
  905.         if (IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
  906.         {
  907.           return HAL_TIMEOUT;
  908.         }
  909.         if (hirda->Init.Parity == IRDA_PARITY_NONE)
  910.         {
  911.           *pData++ = (uint8_t)(hirda->Instance->DR & (uint8_t)0x00FF);
  912.         }
  913.         else
  914.         {
  915.           *pData++ = (uint8_t)(hirda->Instance->DR & (uint8_t)0x007F);
  916.         }
  917.       }
  918.     }
  919.  
  920.     /* At end of Rx process, restore hirda->RxState to Ready */
  921.     hirda->RxState = HAL_IRDA_STATE_READY;
  922.  
  923.     /* Process Unlocked */
  924.     __HAL_UNLOCK(hirda);
  925.  
  926.     return HAL_OK;
  927.   }
  928.   else
  929.   {
  930.     return HAL_BUSY;
  931.   }
  932. }
  933.  
  934. /**
  935.   * @brief Send an amount of data in non blocking mode.
  936.   * @note  When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
  937.   *        the sent data is handled as a set of u16. In this case, Size must reflect the number
  938.   *        of u16 available through pData.
  939.   * @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
  940.   *              the configuration information for the specified IRDA module.
  941.   * @param pData Pointer to data buffer (u8 or u16 data elements).
  942.   * @param Size  Amount of data elements (u8 or u16) to be sent.
  943.   * @retval HAL status
  944.   */
  945. HAL_StatusTypeDef HAL_IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
  946. {
  947.   /* Check that a Tx process is not already ongoing */
  948.   if (hirda->gState == HAL_IRDA_STATE_READY)
  949.   {
  950.     if ((pData == NULL) || (Size == 0U))
  951.     {
  952.       return HAL_ERROR;
  953.     }
  954.  
  955.     /* Process Locked */
  956.     __HAL_LOCK(hirda);
  957.  
  958.     hirda->pTxBuffPtr = pData;
  959.     hirda->TxXferSize = Size;
  960.     hirda->TxXferCount = Size;
  961.  
  962.     hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  963.     hirda->gState = HAL_IRDA_STATE_BUSY_TX;
  964.  
  965.     /* Process Unlocked */
  966.     __HAL_UNLOCK(hirda);
  967.  
  968.     /* Enable the IRDA Transmit Data Register Empty Interrupt */
  969.     SET_BIT(hirda->Instance->CR1, USART_CR1_TXEIE);
  970.  
  971.     return HAL_OK;
  972.   }
  973.   else
  974.   {
  975.     return HAL_BUSY;
  976.   }
  977. }
  978.  
  979. /**
  980.   * @brief Receive an amount of data in non blocking mode.
  981.   * @note  When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
  982.   *        the received data is handled as a set of u16. In this case, Size must reflect the number
  983.   *        of u16 available through pData.
  984.   * @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
  985.   *              the configuration information for the specified IRDA module.
  986.   * @param pData Pointer to data buffer (u8 or u16 data elements).
  987.   * @param Size  Amount of data elements (u8 or u16) to be received.
  988.   * @retval HAL status
  989.   */
  990. HAL_StatusTypeDef HAL_IRDA_Receive_IT(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
  991. {
  992.   /* Check that a Rx process is not already ongoing */
  993.   if (hirda->RxState == HAL_IRDA_STATE_READY)
  994.   {
  995.     if ((pData == NULL) || (Size == 0U))
  996.     {
  997.       return HAL_ERROR;
  998.     }
  999.  
  1000.     /* Process Locked */
  1001.     __HAL_LOCK(hirda);
  1002.  
  1003.     hirda->pRxBuffPtr = pData;
  1004.     hirda->RxXferSize = Size;
  1005.     hirda->RxXferCount = Size;
  1006.  
  1007.     hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  1008.     hirda->RxState = HAL_IRDA_STATE_BUSY_RX;
  1009.  
  1010.     /* Process Unlocked */
  1011.     __HAL_UNLOCK(hirda);
  1012.  
  1013.     /* Enable the IRDA Parity Error and Data Register Not Empty Interrupts */
  1014.     SET_BIT(hirda->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE);
  1015.  
  1016.     /* Enable the IRDA Error Interrupt: (Frame error, Noise error, Overrun error) */
  1017.     SET_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  1018.  
  1019.     return HAL_OK;
  1020.   }
  1021.   else
  1022.   {
  1023.     return HAL_BUSY;
  1024.   }
  1025. }
  1026.  
  1027. /**
  1028.   * @brief Send an amount of data in DMA mode.
  1029.   * @note  When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
  1030.   *        the sent data is handled as a set of u16. In this case, Size must reflect the number
  1031.   *        of u16 available through pData.
  1032.   * @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
  1033.   *              the configuration information for the specified IRDA module.
  1034.   * @param pData Pointer to data buffer (u8 or u16 data elements).
  1035.   * @param Size  Amount of data elements (u8 or u16) to be sent.
  1036.   * @retval HAL status
  1037.   */
  1038. HAL_StatusTypeDef HAL_IRDA_Transmit_DMA(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
  1039. {
  1040.   uint32_t *tmp;
  1041.  
  1042.   /* Check that a Tx process is not already ongoing */
  1043.   if (hirda->gState == HAL_IRDA_STATE_READY)
  1044.   {
  1045.     if ((pData == NULL) || (Size == 0U))
  1046.     {
  1047.       return HAL_ERROR;
  1048.     }
  1049.  
  1050.     /* Process Locked */
  1051.     __HAL_LOCK(hirda);
  1052.  
  1053.     hirda->pTxBuffPtr = pData;
  1054.     hirda->TxXferSize = Size;
  1055.     hirda->TxXferCount = Size;
  1056.  
  1057.     hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  1058.     hirda->gState = HAL_IRDA_STATE_BUSY_TX;
  1059.  
  1060.     /* Set the IRDA DMA transfer complete callback */
  1061.     hirda->hdmatx->XferCpltCallback = IRDA_DMATransmitCplt;
  1062.  
  1063.     /* Set the IRDA DMA half transfer complete callback */
  1064.     hirda->hdmatx->XferHalfCpltCallback = IRDA_DMATransmitHalfCplt;
  1065.  
  1066.     /* Set the DMA error callback */
  1067.     hirda->hdmatx->XferErrorCallback = IRDA_DMAError;
  1068.  
  1069.     /* Set the DMA abort callback */
  1070.     hirda->hdmatx->XferAbortCallback = NULL;
  1071.  
  1072.     /* Enable the IRDA transmit DMA channel */
  1073.     tmp = (uint32_t *)&pData;
  1074.     HAL_DMA_Start_IT(hirda->hdmatx, *(uint32_t *)tmp, (uint32_t)&hirda->Instance->DR, Size);
  1075.  
  1076.     /* Clear the TC flag in the SR register by writing 0 to it */
  1077.     __HAL_IRDA_CLEAR_FLAG(hirda, IRDA_FLAG_TC);
  1078.  
  1079.     /* Process Unlocked */
  1080.     __HAL_UNLOCK(hirda);
  1081.  
  1082.     /* Enable the DMA transfer for transmit request by setting the DMAT bit
  1083.     in the USART CR3 register */
  1084.     SET_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
  1085.  
  1086.     return HAL_OK;
  1087.   }
  1088.   else
  1089.   {
  1090.     return HAL_BUSY;
  1091.   }
  1092. }
  1093.  
  1094. /**
  1095.   * @brief Receives an amount of data in DMA mode.
  1096.   * @note  When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
  1097.   *        the received data is handled as a set of u16. In this case, Size must reflect the number
  1098.   *        of u16 available through pData.
  1099.   * @param hirda Pointer to a IRDA_HandleTypeDef structure that contains
  1100.   *              the configuration information for the specified IRDA module.
  1101.   * @param pData Pointer to data buffer (u8 or u16 data elements).
  1102.   * @param Size  Amount of data elements (u8 or u16) to be received.
  1103.   * @note   When the IRDA parity is enabled (PCE = 1) the data received contain the parity bit.
  1104.   * @retval HAL status
  1105.   */
  1106. HAL_StatusTypeDef HAL_IRDA_Receive_DMA(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size)
  1107. {
  1108.   uint32_t *tmp;
  1109.  
  1110.   /* Check that a Rx process is not already ongoing */
  1111.   if (hirda->RxState == HAL_IRDA_STATE_READY)
  1112.   {
  1113.     if ((pData == NULL) || (Size == 0U))
  1114.     {
  1115.       return HAL_ERROR;
  1116.     }
  1117.  
  1118.     /* Process Locked */
  1119.     __HAL_LOCK(hirda);
  1120.  
  1121.     hirda->pRxBuffPtr = pData;
  1122.     hirda->RxXferSize = Size;
  1123.  
  1124.     hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  1125.     hirda->RxState = HAL_IRDA_STATE_BUSY_RX;
  1126.  
  1127.     /* Set the IRDA DMA transfer complete callback */
  1128.     hirda->hdmarx->XferCpltCallback = IRDA_DMAReceiveCplt;
  1129.  
  1130.     /* Set the IRDA DMA half transfer complete callback */
  1131.     hirda->hdmarx->XferHalfCpltCallback = IRDA_DMAReceiveHalfCplt;
  1132.  
  1133.     /* Set the DMA error callback */
  1134.     hirda->hdmarx->XferErrorCallback = IRDA_DMAError;
  1135.  
  1136.     /* Set the DMA abort callback */
  1137.     hirda->hdmarx->XferAbortCallback = NULL;
  1138.  
  1139.     /* Enable the DMA channel */
  1140.     tmp = (uint32_t *)&pData;
  1141.     HAL_DMA_Start_IT(hirda->hdmarx, (uint32_t)&hirda->Instance->DR, *(uint32_t *)tmp, Size);
  1142.  
  1143.     /* Clear the Overrun flag just before enabling the DMA Rx request: can be mandatory for the second transfer */
  1144.     __HAL_IRDA_CLEAR_OREFLAG(hirda);
  1145.  
  1146.     /* Process Unlocked */
  1147.     __HAL_UNLOCK(hirda);
  1148.  
  1149.     /* Enable the IRDA Parity Error Interrupt */
  1150.     SET_BIT(hirda->Instance->CR1, USART_CR1_PEIE);
  1151.  
  1152.     /* Enable the IRDA Error Interrupt: (Frame error, Noise error, Overrun error) */
  1153.     SET_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  1154.  
  1155.     /* Enable the DMA transfer for the receiver request by setting the DMAR bit
  1156.     in the USART CR3 register */
  1157.     SET_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
  1158.  
  1159.     return HAL_OK;
  1160.   }
  1161.   else
  1162.   {
  1163.     return HAL_BUSY;
  1164.   }
  1165. }
  1166.  
  1167. /**
  1168.   * @brief Pauses the DMA Transfer.
  1169.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  1170.   *                the configuration information for the specified IRDA module.
  1171.   * @retval HAL status
  1172.   */
  1173. HAL_StatusTypeDef HAL_IRDA_DMAPause(IRDA_HandleTypeDef *hirda)
  1174. {
  1175.   uint32_t dmarequest = 0x00U;
  1176.  
  1177.   /* Process Locked */
  1178.   __HAL_LOCK(hirda);
  1179.  
  1180.   dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT);
  1181.   if ((hirda->gState == HAL_IRDA_STATE_BUSY_TX) && dmarequest)
  1182.   {
  1183.     /* Disable the IRDA DMA Tx request */
  1184.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
  1185.   }
  1186.  
  1187.   dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR);
  1188.   if ((hirda->RxState == HAL_IRDA_STATE_BUSY_RX) && dmarequest)
  1189.   {
  1190.     /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
  1191.     CLEAR_BIT(hirda->Instance->CR1, USART_CR1_PEIE);
  1192.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  1193.  
  1194.     /* Disable the IRDA DMA Rx request */
  1195.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
  1196.   }
  1197.  
  1198.   /* Process Unlocked */
  1199.   __HAL_UNLOCK(hirda);
  1200.  
  1201.   return HAL_OK;
  1202. }
  1203.  
  1204. /**
  1205.   * @brief Resumes the DMA Transfer.
  1206.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  1207.   *                the configuration information for the specified IRDA module.
  1208.   * @retval HAL status
  1209.   */
  1210. HAL_StatusTypeDef HAL_IRDA_DMAResume(IRDA_HandleTypeDef *hirda)
  1211. {
  1212.   /* Process Locked */
  1213.   __HAL_LOCK(hirda);
  1214.  
  1215.   if (hirda->gState == HAL_IRDA_STATE_BUSY_TX)
  1216.   {
  1217.     /* Enable the IRDA DMA Tx request */
  1218.     SET_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
  1219.   }
  1220.  
  1221.   if (hirda->RxState == HAL_IRDA_STATE_BUSY_RX)
  1222.   {
  1223.     /* Clear the Overrun flag before resuming the Rx transfer */
  1224.     __HAL_IRDA_CLEAR_OREFLAG(hirda);
  1225.  
  1226.     /* Reenable PE and ERR (Frame error, noise error, overrun error) interrupts */
  1227.     SET_BIT(hirda->Instance->CR1, USART_CR1_PEIE);
  1228.     SET_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  1229.  
  1230.     /* Enable the IRDA DMA Rx request */
  1231.     SET_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
  1232.   }
  1233.  
  1234.   /* Process Unlocked */
  1235.   __HAL_UNLOCK(hirda);
  1236.  
  1237.   return HAL_OK;
  1238. }
  1239.  
  1240. /**
  1241.   * @brief Stops the DMA Transfer.
  1242.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  1243.   *                the configuration information for the specified IRDA module.
  1244.   * @retval HAL status
  1245.   */
  1246. HAL_StatusTypeDef HAL_IRDA_DMAStop(IRDA_HandleTypeDef *hirda)
  1247. {
  1248.   uint32_t dmarequest = 0x00U;
  1249.   /* The Lock is not implemented on this API to allow the user application
  1250.      to call the HAL IRDA API under callbacks HAL_IRDA_TxCpltCallback() / HAL_IRDA_RxCpltCallback():
  1251.      when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated
  1252.      and the correspond call back is executed HAL_IRDA_TxCpltCallback() / HAL_IRDA_RxCpltCallback()
  1253.   */
  1254.  
  1255.   /* Stop IRDA DMA Tx request if ongoing */
  1256.   dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT);
  1257.   if ((hirda->gState == HAL_IRDA_STATE_BUSY_TX) && dmarequest)
  1258.   {
  1259.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
  1260.  
  1261.     /* Abort the IRDA DMA Tx channel */
  1262.     if (hirda->hdmatx != NULL)
  1263.     {
  1264.       HAL_DMA_Abort(hirda->hdmatx);
  1265.     }
  1266.     IRDA_EndTxTransfer(hirda);
  1267.   }
  1268.  
  1269.   /* Stop IRDA DMA Rx request if ongoing */
  1270.   dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR);
  1271.   if ((hirda->RxState == HAL_IRDA_STATE_BUSY_RX) && dmarequest)
  1272.   {
  1273.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
  1274.  
  1275.     /* Abort the IRDA DMA Rx channel */
  1276.     if (hirda->hdmarx != NULL)
  1277.     {
  1278.       HAL_DMA_Abort(hirda->hdmarx);
  1279.     }
  1280.     IRDA_EndRxTransfer(hirda);
  1281.   }
  1282.  
  1283.   return HAL_OK;
  1284. }
  1285.  
  1286. /**
  1287.   * @brief  Abort ongoing transfers (blocking mode).
  1288.   * @param  hirda IRDA handle.
  1289.   * @note   This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
  1290.   *         This procedure performs following operations :
  1291.   *           - Disable PPP Interrupts
  1292.   *           - Disable the DMA transfer in the peripheral register (if enabled)
  1293.   *           - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
  1294.   *           - Set handle State to READY
  1295.   * @note   This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
  1296.   * @retval HAL status
  1297. */
  1298. HAL_StatusTypeDef HAL_IRDA_Abort(IRDA_HandleTypeDef *hirda)
  1299. {
  1300.   /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  1301.   CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
  1302.   CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  1303.  
  1304.   /* Disable the IRDA DMA Tx request if enabled */
  1305.   if (HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT))
  1306.   {
  1307.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
  1308.  
  1309.     /* Abort the IRDA DMA Tx channel : use blocking DMA Abort API (no callback) */
  1310.     if (hirda->hdmatx != NULL)
  1311.     {
  1312.       /* Set the IRDA DMA Abort callback to Null.
  1313.          No call back execution at end of DMA abort procedure */
  1314.       hirda->hdmatx->XferAbortCallback = NULL;
  1315.  
  1316.       HAL_DMA_Abort(hirda->hdmatx);
  1317.     }
  1318.   }
  1319.  
  1320.   /* Disable the IRDA DMA Rx request if enabled */
  1321.   if (HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR))
  1322.   {
  1323.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
  1324.  
  1325.     /* Abort the IRDA DMA Rx channel : use blocking DMA Abort API (no callback) */
  1326.     if (hirda->hdmarx != NULL)
  1327.     {
  1328.       /* Set the IRDA DMA Abort callback to Null.
  1329.          No call back execution at end of DMA abort procedure */
  1330.       hirda->hdmarx->XferAbortCallback = NULL;
  1331.  
  1332.       HAL_DMA_Abort(hirda->hdmarx);
  1333.     }
  1334.   }
  1335.  
  1336.   /* Reset Tx and Rx transfer counters */
  1337.   hirda->TxXferCount = 0x00U;
  1338.   hirda->RxXferCount = 0x00U;
  1339.  
  1340.   /* Reset ErrorCode */
  1341.   hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  1342.  
  1343.   /* Restore hirda->RxState and hirda->gState to Ready */
  1344.   hirda->RxState = HAL_IRDA_STATE_READY;
  1345.   hirda->gState = HAL_IRDA_STATE_READY;
  1346.  
  1347.   return HAL_OK;
  1348. }
  1349.  
  1350. /**
  1351.   * @brief  Abort ongoing Transmit transfer (blocking mode).
  1352.   * @param  hirda IRDA handle.
  1353.   * @note   This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
  1354.   *         This procedure performs following operations :
  1355.   *           - Disable PPP Interrupts
  1356.   *           - Disable the DMA transfer in the peripheral register (if enabled)
  1357.   *           - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
  1358.   *           - Set handle State to READY
  1359.   * @note   This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
  1360.   * @retval HAL status
  1361. */
  1362. HAL_StatusTypeDef HAL_IRDA_AbortTransmit(IRDA_HandleTypeDef *hirda)
  1363. {
  1364.   /* Disable TXEIE and TCIE interrupts */
  1365.   CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
  1366.  
  1367.   /* Disable the IRDA DMA Tx request if enabled */
  1368.   if (HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT))
  1369.   {
  1370.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
  1371.  
  1372.     /* Abort the IRDA DMA Tx channel : use blocking DMA Abort API (no callback) */
  1373.     if (hirda->hdmatx != NULL)
  1374.     {
  1375.       /* Set the IRDA DMA Abort callback to Null.
  1376.          No call back execution at end of DMA abort procedure */
  1377.       hirda->hdmatx->XferAbortCallback = NULL;
  1378.  
  1379.       HAL_DMA_Abort(hirda->hdmatx);
  1380.     }
  1381.   }
  1382.  
  1383.   /* Reset Tx transfer counter */
  1384.   hirda->TxXferCount = 0x00U;
  1385.  
  1386.   /* Restore hirda->gState to Ready */
  1387.   hirda->gState = HAL_IRDA_STATE_READY;
  1388.  
  1389.   return HAL_OK;
  1390. }
  1391.  
  1392. /**
  1393.   * @brief  Abort ongoing Receive transfer (blocking mode).
  1394.   * @param  hirda IRDA handle.
  1395.   * @note   This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
  1396.   *         This procedure performs following operations :
  1397.   *           - Disable PPP Interrupts
  1398.   *           - Disable the DMA transfer in the peripheral register (if enabled)
  1399.   *           - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
  1400.   *           - Set handle State to READY
  1401.   * @note   This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
  1402.   * @retval HAL status
  1403. */
  1404. HAL_StatusTypeDef HAL_IRDA_AbortReceive(IRDA_HandleTypeDef *hirda)
  1405. {
  1406.   /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  1407.   CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
  1408.   CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  1409.  
  1410.   /* Disable the IRDA DMA Rx request if enabled */
  1411.   if (HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR))
  1412.   {
  1413.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
  1414.  
  1415.     /* Abort the IRDA DMA Rx channel : use blocking DMA Abort API (no callback) */
  1416.     if (hirda->hdmarx != NULL)
  1417.     {
  1418.       /* Set the IRDA DMA Abort callback to Null.
  1419.          No call back execution at end of DMA abort procedure */
  1420.       hirda->hdmarx->XferAbortCallback = NULL;
  1421.  
  1422.       HAL_DMA_Abort(hirda->hdmarx);
  1423.     }
  1424.   }
  1425.  
  1426.   /* Reset Rx transfer counter */
  1427.   hirda->RxXferCount = 0x00U;
  1428.  
  1429.   /* Restore hirda->RxState to Ready */
  1430.   hirda->RxState = HAL_IRDA_STATE_READY;
  1431.  
  1432.   return HAL_OK;
  1433. }
  1434.  
  1435. /**
  1436.   * @brief  Abort ongoing transfers (Interrupt mode).
  1437.   * @param  hirda IRDA handle.
  1438.   * @note   This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
  1439.   *         This procedure performs following operations :
  1440.   *           - Disable PPP Interrupts
  1441.   *           - Disable the DMA transfer in the peripheral register (if enabled)
  1442.   *           - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
  1443.   *           - Set handle State to READY
  1444.   *           - At abort completion, call user abort complete callback
  1445.   * @note   This procedure is executed in Interrupt mode, meaning that abort procedure could be
  1446.   *         considered as completed only when user abort complete callback is executed (not when exiting function).
  1447.   * @retval HAL status
  1448. */
  1449. HAL_StatusTypeDef HAL_IRDA_Abort_IT(IRDA_HandleTypeDef *hirda)
  1450. {
  1451.   uint32_t AbortCplt = 0x01U;
  1452.  
  1453.   /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  1454.   CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
  1455.   CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  1456.  
  1457.   /* If DMA Tx and/or DMA Rx Handles are associated to IRDA Handle, DMA Abort complete callbacks should be initialised
  1458.      before any call to DMA Abort functions */
  1459.   /* DMA Tx Handle is valid */
  1460.   if (hirda->hdmatx != NULL)
  1461.   {
  1462.     /* Set DMA Abort Complete callback if IRDA DMA Tx request if enabled.
  1463.        Otherwise, set it to NULL */
  1464.     if (HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT))
  1465.     {
  1466.       hirda->hdmatx->XferAbortCallback = IRDA_DMATxAbortCallback;
  1467.     }
  1468.     else
  1469.     {
  1470.       hirda->hdmatx->XferAbortCallback = NULL;
  1471.     }
  1472.   }
  1473.   /* DMA Rx Handle is valid */
  1474.   if (hirda->hdmarx != NULL)
  1475.   {
  1476.     /* Set DMA Abort Complete callback if IRDA DMA Rx request if enabled.
  1477.        Otherwise, set it to NULL */
  1478.     if (HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR))
  1479.     {
  1480.       hirda->hdmarx->XferAbortCallback = IRDA_DMARxAbortCallback;
  1481.     }
  1482.     else
  1483.     {
  1484.       hirda->hdmarx->XferAbortCallback = NULL;
  1485.     }
  1486.   }
  1487.  
  1488.   /* Disable the IRDA DMA Tx request if enabled */
  1489.   if (HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT))
  1490.   {
  1491.     /* Disable DMA Tx at IRDA level */
  1492.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
  1493.  
  1494.     /* Abort the IRDA DMA Tx channel : use non blocking DMA Abort API (callback) */
  1495.     if (hirda->hdmatx != NULL)
  1496.     {
  1497.       /* IRDA Tx DMA Abort callback has already been initialised :
  1498.          will lead to call HAL_IRDA_AbortCpltCallback() at end of DMA abort procedure */
  1499.  
  1500.       /* Abort DMA TX */
  1501.       if (HAL_DMA_Abort_IT(hirda->hdmatx) != HAL_OK)
  1502.       {
  1503.         hirda->hdmatx->XferAbortCallback = NULL;
  1504.       }
  1505.       else
  1506.       {
  1507.         AbortCplt = 0x00U;
  1508.       }
  1509.     }
  1510.   }
  1511.  
  1512.   /* Disable the IRDA DMA Rx request if enabled */
  1513.   if (HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR))
  1514.   {
  1515.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
  1516.  
  1517.     /* Abort the IRDA DMA Rx channel : use non blocking DMA Abort API (callback) */
  1518.     if (hirda->hdmarx != NULL)
  1519.     {
  1520.       /* IRDA Rx DMA Abort callback has already been initialised :
  1521.          will lead to call HAL_IRDA_AbortCpltCallback() at end of DMA abort procedure */
  1522.  
  1523.       /* Abort DMA RX */
  1524.       if (HAL_DMA_Abort_IT(hirda->hdmarx) != HAL_OK)
  1525.       {
  1526.         hirda->hdmarx->XferAbortCallback = NULL;
  1527.         AbortCplt = 0x01U;
  1528.       }
  1529.       else
  1530.       {
  1531.         AbortCplt = 0x00U;
  1532.       }
  1533.     }
  1534.   }
  1535.  
  1536.   /* if no DMA abort complete callback execution is required => call user Abort Complete callback */
  1537.   if (AbortCplt == 0x01U)
  1538.   {
  1539.     /* Reset Tx and Rx transfer counters */
  1540.     hirda->TxXferCount = 0x00U;
  1541.     hirda->RxXferCount = 0x00U;
  1542.  
  1543.     /* Reset ErrorCode */
  1544.     hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  1545.  
  1546.     /* Restore hirda->gState and hirda->RxState to Ready */
  1547.     hirda->gState  = HAL_IRDA_STATE_READY;
  1548.     hirda->RxState = HAL_IRDA_STATE_READY;
  1549.  
  1550.     /* As no DMA to be aborted, call directly user Abort complete callback */
  1551. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  1552.     /* Call registered Abort complete callback */
  1553.     hirda->AbortCpltCallback(hirda);
  1554. #else
  1555.     /* Call legacy weak Abort complete callback */
  1556.     HAL_IRDA_AbortCpltCallback(hirda);
  1557. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  1558.   }
  1559.  
  1560.   return HAL_OK;
  1561. }
  1562.  
  1563. /**
  1564.   * @brief  Abort ongoing Transmit transfer (Interrupt mode).
  1565.   * @param  hirda IRDA handle.
  1566.   * @note   This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
  1567.   *         This procedure performs following operations :
  1568.   *           - Disable IRDA Interrupts (Tx)
  1569.   *           - Disable the DMA transfer in the peripheral register (if enabled)
  1570.   *           - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
  1571.   *           - Set handle State to READY
  1572.   *           - At abort completion, call user abort complete callback
  1573.   * @note   This procedure is executed in Interrupt mode, meaning that abort procedure could be
  1574.   *         considered as completed only when user abort complete callback is executed (not when exiting function).
  1575.   * @retval HAL status
  1576. */
  1577. HAL_StatusTypeDef HAL_IRDA_AbortTransmit_IT(IRDA_HandleTypeDef *hirda)
  1578. {
  1579.   /* Disable TXEIE and TCIE interrupts */
  1580.   CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
  1581.  
  1582.   /* Disable the IRDA DMA Tx request if enabled */
  1583.   if (HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT))
  1584.   {
  1585.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
  1586.  
  1587.     /* Abort the IRDA DMA Tx channel : use non blocking DMA Abort API (callback) */
  1588.     if (hirda->hdmatx != NULL)
  1589.     {
  1590.       /* Set the IRDA DMA Abort callback :
  1591.          will lead to call HAL_IRDA_AbortCpltCallback() at end of DMA abort procedure */
  1592.       hirda->hdmatx->XferAbortCallback = IRDA_DMATxOnlyAbortCallback;
  1593.  
  1594.       /* Abort DMA TX */
  1595.       if (HAL_DMA_Abort_IT(hirda->hdmatx) != HAL_OK)
  1596.       {
  1597.         /* Call Directly hirda->hdmatx->XferAbortCallback function in case of error */
  1598.         hirda->hdmatx->XferAbortCallback(hirda->hdmatx);
  1599.       }
  1600.     }
  1601.     else
  1602.     {
  1603.       /* Reset Tx transfer counter */
  1604.       hirda->TxXferCount = 0x00U;
  1605.  
  1606.       /* Restore hirda->gState to Ready */
  1607.       hirda->gState = HAL_IRDA_STATE_READY;
  1608.  
  1609.       /* As no DMA to be aborted, call directly user Abort complete callback */
  1610. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  1611.       /* Call registered Abort Transmit Complete Callback */
  1612.       hirda->AbortTransmitCpltCallback(hirda);
  1613. #else
  1614.       /* Call legacy weak Abort Transmit Complete Callback */
  1615.       HAL_IRDA_AbortTransmitCpltCallback(hirda);
  1616. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  1617.     }
  1618.   }
  1619.   else
  1620.   {
  1621.     /* Reset Tx transfer counter */
  1622.     hirda->TxXferCount = 0x00U;
  1623.  
  1624.     /* Restore hirda->gState to Ready */
  1625.     hirda->gState = HAL_IRDA_STATE_READY;
  1626.  
  1627.     /* As no DMA to be aborted, call directly user Abort complete callback */
  1628. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  1629.     /* Call registered Abort Transmit Complete Callback */
  1630.     hirda->AbortTransmitCpltCallback(hirda);
  1631. #else
  1632.     /* Call legacy weak Abort Transmit Complete Callback */
  1633.     HAL_IRDA_AbortTransmitCpltCallback(hirda);
  1634. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  1635.   }
  1636.  
  1637.   return HAL_OK;
  1638. }
  1639.  
  1640. /**
  1641.   * @brief  Abort ongoing Receive transfer (Interrupt mode).
  1642.   * @param  hirda IRDA handle.
  1643.   * @note   This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
  1644.   *         This procedure performs following operations :
  1645.   *           - Disable PPP Interrupts
  1646.   *           - Disable the DMA transfer in the peripheral register (if enabled)
  1647.   *           - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
  1648.   *           - Set handle State to READY
  1649.   *           - At abort completion, call user abort complete callback
  1650.   * @note   This procedure is executed in Interrupt mode, meaning that abort procedure could be
  1651.   *         considered as completed only when user abort complete callback is executed (not when exiting function).
  1652.   * @retval HAL status
  1653. */
  1654. HAL_StatusTypeDef HAL_IRDA_AbortReceive_IT(IRDA_HandleTypeDef *hirda)
  1655. {
  1656.   /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  1657.   CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
  1658.   CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  1659.  
  1660.   /* Disable the IRDA DMA Rx request if enabled */
  1661.   if (HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR))
  1662.   {
  1663.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
  1664.  
  1665.     /* Abort the IRDA DMA Rx channel : use non blocking DMA Abort API (callback) */
  1666.     if (hirda->hdmarx != NULL)
  1667.     {
  1668.       /* Set the IRDA DMA Abort callback :
  1669.          will lead to call HAL_IRDA_AbortCpltCallback() at end of DMA abort procedure */
  1670.       hirda->hdmarx->XferAbortCallback = IRDA_DMARxOnlyAbortCallback;
  1671.  
  1672.       /* Abort DMA RX */
  1673.       if (HAL_DMA_Abort_IT(hirda->hdmarx) != HAL_OK)
  1674.       {
  1675.         /* Call Directly hirda->hdmarx->XferAbortCallback function in case of error */
  1676.         hirda->hdmarx->XferAbortCallback(hirda->hdmarx);
  1677.       }
  1678.     }
  1679.     else
  1680.     {
  1681.       /* Reset Rx transfer counter */
  1682.       hirda->RxXferCount = 0x00U;
  1683.  
  1684.       /* Restore hirda->RxState to Ready */
  1685.       hirda->RxState = HAL_IRDA_STATE_READY;
  1686.  
  1687.       /* As no DMA to be aborted, call directly user Abort complete callback */
  1688. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  1689.       /* Call registered Abort Receive Complete Callback */
  1690.       hirda->AbortReceiveCpltCallback(hirda);
  1691. #else
  1692.       /* Call legacy weak Abort Receive Complete Callback */
  1693.       HAL_IRDA_AbortReceiveCpltCallback(hirda);
  1694. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  1695.     }
  1696.   }
  1697.   else
  1698.   {
  1699.     /* Reset Rx transfer counter */
  1700.     hirda->RxXferCount = 0x00U;
  1701.  
  1702.     /* Restore hirda->RxState to Ready */
  1703.     hirda->RxState = HAL_IRDA_STATE_READY;
  1704.  
  1705.     /* As no DMA to be aborted, call directly user Abort complete callback */
  1706. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  1707.     /* Call registered Abort Receive Complete Callback */
  1708.     hirda->AbortReceiveCpltCallback(hirda);
  1709. #else
  1710.     /* Call legacy weak Abort Receive Complete Callback */
  1711.     HAL_IRDA_AbortReceiveCpltCallback(hirda);
  1712. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  1713.   }
  1714.  
  1715.   return HAL_OK;
  1716. }
  1717.  
  1718. /**
  1719.   * @brief  This function handles IRDA interrupt request.
  1720.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  1721.   *                the configuration information for the specified IRDA module.
  1722.   * @retval None
  1723.   */
  1724. void HAL_IRDA_IRQHandler(IRDA_HandleTypeDef *hirda)
  1725. {
  1726.   uint32_t isrflags   = READ_REG(hirda->Instance->SR);
  1727.   uint32_t cr1its     = READ_REG(hirda->Instance->CR1);
  1728.   uint32_t cr3its     = READ_REG(hirda->Instance->CR3);
  1729.   uint32_t errorflags = 0x00U;
  1730.   uint32_t dmarequest = 0x00U;
  1731.  
  1732.   /* If no error occurs */
  1733.   errorflags = (isrflags & (uint32_t)(USART_SR_PE | USART_SR_FE | USART_SR_ORE | USART_SR_NE));
  1734.   if (errorflags == RESET)
  1735.   {
  1736.     /* IRDA in mode Receiver -----------------------------------------------*/
  1737.     if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
  1738.     {
  1739.       IRDA_Receive_IT(hirda);
  1740.       return;
  1741.     }
  1742.   }
  1743.  
  1744.   /* If some errors occur */
  1745.   if ((errorflags != RESET) && (((cr3its & USART_CR3_EIE) != RESET) || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)))
  1746.   {
  1747.     /* IRDA parity error interrupt occurred -------------------------------*/
  1748.     if (((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET))
  1749.     {
  1750.       hirda->ErrorCode |= HAL_IRDA_ERROR_PE;
  1751.     }
  1752.  
  1753.     /* IRDA noise error interrupt occurred --------------------------------*/
  1754.     if (((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
  1755.     {
  1756.       hirda->ErrorCode |= HAL_IRDA_ERROR_NE;
  1757.     }
  1758.  
  1759.     /* IRDA frame error interrupt occurred --------------------------------*/
  1760.     if (((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
  1761.     {
  1762.       hirda->ErrorCode |= HAL_IRDA_ERROR_FE;
  1763.     }
  1764.  
  1765.     /* IRDA Over-Run interrupt occurred -----------------------------------*/
  1766.     if (((isrflags & USART_SR_ORE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
  1767.     {
  1768.       hirda->ErrorCode |= HAL_IRDA_ERROR_ORE;
  1769.     }
  1770.     /* Call IRDA Error Call back function if need be -----------------------*/
  1771.     if (hirda->ErrorCode != HAL_IRDA_ERROR_NONE)
  1772.     {
  1773.       /* IRDA in mode Receiver ---------------------------------------------*/
  1774.       if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
  1775.       {
  1776.         IRDA_Receive_IT(hirda);
  1777.       }
  1778.  
  1779.       /* If Overrun error occurs, or if any error occurs in DMA mode reception,
  1780.          consider error as blocking */
  1781.       dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR);
  1782.       if (((hirda->ErrorCode & HAL_IRDA_ERROR_ORE) != RESET) || dmarequest)
  1783.       {
  1784.         /* Blocking error : transfer is aborted
  1785.            Set the IRDA state ready to be able to start again the process,
  1786.            Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
  1787.         IRDA_EndRxTransfer(hirda);
  1788.  
  1789.         /* Disable the IRDA DMA Rx request if enabled */
  1790.         if (HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR))
  1791.         {
  1792.           CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
  1793.  
  1794.           /* Abort the IRDA DMA Rx channel */
  1795.           if (hirda->hdmarx != NULL)
  1796.           {
  1797.             /* Set the IRDA DMA Abort callback :
  1798.             will lead to call HAL_IRDA_ErrorCallback() at end of DMA abort procedure */
  1799.             hirda->hdmarx->XferAbortCallback = IRDA_DMAAbortOnError;
  1800.  
  1801.             /* Abort DMA RX */
  1802.             if (HAL_DMA_Abort_IT(hirda->hdmarx) != HAL_OK)
  1803.             {
  1804.               /* Call Directly XferAbortCallback function in case of error */
  1805.               hirda->hdmarx->XferAbortCallback(hirda->hdmarx);
  1806.             }
  1807.           }
  1808.           else
  1809.           {
  1810. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  1811.             /* Call registered user error callback */
  1812.             hirda->ErrorCallback(hirda);
  1813. #else
  1814.             /* Call legacy weak user error callback */
  1815.             HAL_IRDA_ErrorCallback(hirda);
  1816. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  1817.           }
  1818.         }
  1819.         else
  1820.         {
  1821. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  1822.           /* Call registered user error callback */
  1823.           hirda->ErrorCallback(hirda);
  1824. #else
  1825.           /* Call legacy weak user error callback */
  1826.           HAL_IRDA_ErrorCallback(hirda);
  1827. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  1828.         }
  1829.       }
  1830.       else
  1831.       {
  1832.         /* Non Blocking error : transfer could go on.
  1833.            Error is notified to user through user error callback */
  1834. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  1835.         /* Call registered user error callback */
  1836.         hirda->ErrorCallback(hirda);
  1837. #else
  1838.         /* Call legacy weak user error callback */
  1839.         HAL_IRDA_ErrorCallback(hirda);
  1840. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  1841.  
  1842.         hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  1843.       }
  1844.     }
  1845.     return;
  1846.   } /* End if some error occurs */
  1847.  
  1848.   /* IRDA in mode Transmitter ------------------------------------------------*/
  1849.   if (((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET))
  1850.   {
  1851.     IRDA_Transmit_IT(hirda);
  1852.     return;
  1853.   }
  1854.  
  1855.   /* IRDA in mode Transmitter end --------------------------------------------*/
  1856.   if (((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET))
  1857.   {
  1858.     IRDA_EndTransmit_IT(hirda);
  1859.     return;
  1860.   }
  1861. }
  1862.  
  1863. /**
  1864.   * @brief  Tx Transfer complete callback.
  1865.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  1866.   *                the configuration information for the specified IRDA module.
  1867.   * @retval None
  1868.   */
  1869. __weak void HAL_IRDA_TxCpltCallback(IRDA_HandleTypeDef *hirda)
  1870. {
  1871.   /* Prevent unused argument(s) compilation warning */
  1872.   UNUSED(hirda);
  1873.  
  1874.   /* NOTE : This function should not be modified, when the callback is needed,
  1875.             the HAL_IRDA_TxCpltCallback can be implemented in the user file.
  1876.    */
  1877. }
  1878.  
  1879. /**
  1880.   * @brief  Tx Half Transfer completed callback.
  1881.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  1882.   *                the configuration information for the specified USART module.
  1883.   * @retval None
  1884.   */
  1885. __weak void HAL_IRDA_TxHalfCpltCallback(IRDA_HandleTypeDef *hirda)
  1886. {
  1887.   /* Prevent unused argument(s) compilation warning */
  1888.   UNUSED(hirda);
  1889.  
  1890.   /* NOTE : This function should not be modified, when the callback is needed,
  1891.             the HAL_IRDA_TxHalfCpltCallback can be implemented in the user file.
  1892.    */
  1893. }
  1894.  
  1895. /**
  1896.   * @brief  Rx Transfer complete callback.
  1897.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  1898.   *                the configuration information for the specified IRDA module.
  1899.   * @retval None
  1900.   */
  1901. __weak void HAL_IRDA_RxCpltCallback(IRDA_HandleTypeDef *hirda)
  1902. {
  1903.   /* Prevent unused argument(s) compilation warning */
  1904.   UNUSED(hirda);
  1905.  
  1906.   /* NOTE : This function should not be modified, when the callback is needed,
  1907.             the HAL_IRDA_RxCpltCallback can be implemented in the user file.
  1908.    */
  1909. }
  1910.  
  1911. /**
  1912.   * @brief  Rx Half Transfer complete callback.
  1913.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  1914.   *                the configuration information for the specified IRDA module.
  1915.   * @retval None
  1916.   */
  1917. __weak void HAL_IRDA_RxHalfCpltCallback(IRDA_HandleTypeDef *hirda)
  1918. {
  1919.   /* Prevent unused argument(s) compilation warning */
  1920.   UNUSED(hirda);
  1921.  
  1922.   /* NOTE : This function should not be modified, when the callback is needed,
  1923.             the HAL_IRDA_RxHalfCpltCallback can be implemented in the user file.
  1924.    */
  1925. }
  1926.  
  1927. /**
  1928.   * @brief  IRDA error callback.
  1929.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  1930.   *                the configuration information for the specified IRDA module.
  1931.   * @retval None
  1932.   */
  1933. __weak void HAL_IRDA_ErrorCallback(IRDA_HandleTypeDef *hirda)
  1934. {
  1935.   /* Prevent unused argument(s) compilation warning */
  1936.   UNUSED(hirda);
  1937.  
  1938.   /* NOTE : This function should not be modified, when the callback is needed,
  1939.             the HAL_IRDA_ErrorCallback can be implemented in the user file.
  1940.    */
  1941. }
  1942.  
  1943. /**
  1944.   * @brief  IRDA Abort Complete callback.
  1945.   * @param  hirda Pointer to a IRDA_HandleTypeDef structure that contains
  1946.   *                the configuration information for the specified IRDA module.
  1947.   * @retval None
  1948.   */
  1949. __weak void HAL_IRDA_AbortCpltCallback(IRDA_HandleTypeDef *hirda)
  1950. {
  1951.   /* Prevent unused argument(s) compilation warning */
  1952.   UNUSED(hirda);
  1953.  
  1954.   /* NOTE : This function should not be modified, when the callback is needed,
  1955.             the HAL_IRDA_AbortCpltCallback can be implemented in the user file.
  1956.    */
  1957. }
  1958.  
  1959. /**
  1960.   * @brief  IRDA Abort Transmit Complete callback.
  1961.   * @param  hirda Pointer to a IRDA_HandleTypeDef structure that contains
  1962.   *                the configuration information for the specified IRDA module.
  1963.   * @retval None
  1964.   */
  1965. __weak void HAL_IRDA_AbortTransmitCpltCallback(IRDA_HandleTypeDef *hirda)
  1966. {
  1967.   /* Prevent unused argument(s) compilation warning */
  1968.   UNUSED(hirda);
  1969.  
  1970.   /* NOTE : This function should not be modified, when the callback is needed,
  1971.             the HAL_IRDA_AbortTransmitCpltCallback can be implemented in the user file.
  1972.    */
  1973. }
  1974.  
  1975. /**
  1976.   * @brief  IRDA Abort Receive Complete callback.
  1977.   * @param  hirda Pointer to a IRDA_HandleTypeDef structure that contains
  1978.   *                the configuration information for the specified IRDA module.
  1979.   * @retval None
  1980.   */
  1981. __weak void HAL_IRDA_AbortReceiveCpltCallback(IRDA_HandleTypeDef *hirda)
  1982. {
  1983.   /* Prevent unused argument(s) compilation warning */
  1984.   UNUSED(hirda);
  1985.  
  1986.   /* NOTE : This function should not be modified, when the callback is needed,
  1987.             the HAL_IRDA_AbortReceiveCpltCallback can be implemented in the user file.
  1988.    */
  1989. }
  1990.  
  1991. /**
  1992.   * @}
  1993.   */
  1994.  
  1995. /** @defgroup IRDA_Exported_Functions_Group3 Peripheral State and Errors functions
  1996.   *  @brief   IRDA State and Errors functions
  1997.   *
  1998. @verbatim
  1999.   ==============================================================================
  2000.                   ##### Peripheral State and Errors functions #####
  2001.   ==============================================================================
  2002.   [..]
  2003.     This subsection provides a set of functions allowing to return the State of IrDA
  2004.     communication process and also return Peripheral Errors occurred during communication process
  2005.      (+) HAL_IRDA_GetState() API can be helpful to check in run-time the state of the IrDA peripheral.
  2006.      (+) HAL_IRDA_GetError() check in run-time errors that could be occurred during communication.
  2007.  
  2008. @endverbatim
  2009.   * @{
  2010.   */
  2011.  
  2012. /**
  2013.   * @brief  Return the IRDA state.
  2014.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  2015.   *                the configuration information for the specified IRDA.
  2016.   * @retval HAL state
  2017.   */
  2018. HAL_IRDA_StateTypeDef HAL_IRDA_GetState(IRDA_HandleTypeDef *hirda)
  2019. {
  2020.   uint32_t temp1 = 0x00U, temp2 = 0x00U;
  2021.   temp1 = hirda->gState;
  2022.   temp2 = hirda->RxState;
  2023.  
  2024.   return (HAL_IRDA_StateTypeDef)(temp1 | temp2);
  2025. }
  2026.  
  2027. /**
  2028.   * @brief  Return the IRDA error code
  2029.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  2030.   *              the configuration information for the specified IRDA.
  2031.   * @retval IRDA Error Code
  2032.   */
  2033. uint32_t HAL_IRDA_GetError(IRDA_HandleTypeDef *hirda)
  2034. {
  2035.   return hirda->ErrorCode;
  2036. }
  2037.  
  2038. /**
  2039.   * @}
  2040.   */
  2041.  
  2042. /**
  2043.   * @}
  2044.   */
  2045.  
  2046. /** @defgroup IRDA_Private_Functions IRDA Private Functions
  2047.   * @{
  2048.   */
  2049.  
  2050. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2051. /**
  2052.   * @brief  Initialize the callbacks to their default values.
  2053.   * @param  hirda IRDA handle.
  2054.   * @retval none
  2055.   */
  2056. void IRDA_InitCallbacksToDefault(IRDA_HandleTypeDef *hirda)
  2057. {
  2058.   /* Init the IRDA Callback settings */
  2059.   hirda->TxHalfCpltCallback        = HAL_IRDA_TxHalfCpltCallback;        /* Legacy weak TxHalfCpltCallback        */
  2060.   hirda->TxCpltCallback            = HAL_IRDA_TxCpltCallback;            /* Legacy weak TxCpltCallback            */
  2061.   hirda->RxHalfCpltCallback        = HAL_IRDA_RxHalfCpltCallback;        /* Legacy weak RxHalfCpltCallback        */
  2062.   hirda->RxCpltCallback            = HAL_IRDA_RxCpltCallback;            /* Legacy weak RxCpltCallback            */
  2063.   hirda->ErrorCallback             = HAL_IRDA_ErrorCallback;             /* Legacy weak ErrorCallback             */
  2064.   hirda->AbortCpltCallback         = HAL_IRDA_AbortCpltCallback;         /* Legacy weak AbortCpltCallback         */
  2065.   hirda->AbortTransmitCpltCallback = HAL_IRDA_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */
  2066.   hirda->AbortReceiveCpltCallback  = HAL_IRDA_AbortReceiveCpltCallback;  /* Legacy weak AbortReceiveCpltCallback  */
  2067.  
  2068. }
  2069. #endif /* USE_HAL_IRDA_REGISTER_CALLBACKS */
  2070.  
  2071. /**
  2072.   * @brief  DMA IRDA transmit process complete callback.
  2073.   * @param  hdma  Pointer to a DMA_HandleTypeDef structure that contains
  2074.   *               the configuration information for the specified DMA.
  2075.   * @retval None
  2076.   */
  2077. static void IRDA_DMATransmitCplt(DMA_HandleTypeDef *hdma)
  2078. {
  2079.   IRDA_HandleTypeDef *hirda = (IRDA_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  2080.   /* DMA Normal mode */
  2081.   if ((hdma->Instance->CCR & DMA_CCR_CIRC) == 0U)
  2082.   {
  2083.     hirda->TxXferCount = 0U;
  2084.  
  2085.     /* Disable the DMA transfer for transmit request by resetting the DMAT bit
  2086.        in the IRDA CR3 register */
  2087.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAT);
  2088.  
  2089.     /* Enable the IRDA Transmit Complete Interrupt */
  2090.     SET_BIT(hirda->Instance->CR1, USART_CR1_TCIE);
  2091.   }
  2092.   /* DMA Circular mode */
  2093.   else
  2094.   {
  2095. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2096.     /* Call registered Tx complete callback */
  2097.     hirda->TxCpltCallback(hirda);
  2098. #else
  2099.     /* Call legacy weak Tx complete callback */
  2100.     HAL_IRDA_TxCpltCallback(hirda);
  2101. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  2102.   }
  2103. }
  2104.  
  2105. /**
  2106.   * @brief DMA IRDA receive process half complete callback
  2107.   * @param  hdma  Pointer to a DMA_HandleTypeDef structure that contains
  2108.   *               the configuration information for the specified DMA.
  2109.   * @retval None
  2110.   */
  2111. static void IRDA_DMATransmitHalfCplt(DMA_HandleTypeDef *hdma)
  2112. {
  2113.   IRDA_HandleTypeDef *hirda = (IRDA_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  2114.  
  2115. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2116.   /* Call registered Tx Half complete callback */
  2117.   hirda->TxHalfCpltCallback(hirda);
  2118. #else
  2119.   /* Call legacy weak Tx complete callback */
  2120.   HAL_IRDA_TxHalfCpltCallback(hirda);
  2121. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  2122. }
  2123.  
  2124. /**
  2125.   * @brief  DMA IRDA receive process complete callback.
  2126.   * @param  hdma  Pointer to a DMA_HandleTypeDef structure that contains
  2127.   *               the configuration information for the specified DMA.
  2128.   * @retval None
  2129.   */
  2130. static void IRDA_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
  2131. {
  2132.   IRDA_HandleTypeDef *hirda = (IRDA_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  2133.  
  2134.   /* DMA Normal mode */
  2135.   if ((hdma->Instance->CCR & DMA_CCR_CIRC) == 0U)
  2136.   {
  2137.     hirda->RxXferCount = 0U;
  2138.  
  2139.     /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
  2140.     CLEAR_BIT(hirda->Instance->CR1, USART_CR1_PEIE);
  2141.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  2142.  
  2143.     /* Disable the DMA transfer for the receiver request by resetting the DMAR bit
  2144.        in the IRDA CR3 register */
  2145.     CLEAR_BIT(hirda->Instance->CR3, USART_CR3_DMAR);
  2146.  
  2147.     /* At end of Rx process, restore hirda->RxState to Ready */
  2148.     hirda->RxState = HAL_IRDA_STATE_READY;
  2149.   }
  2150.  
  2151. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2152.   /* Call registered Rx complete callback */
  2153.   hirda->RxCpltCallback(hirda);
  2154. #else
  2155.   /* Call legacy weak Rx complete callback */
  2156.   HAL_IRDA_RxCpltCallback(hirda);
  2157. #endif /* USE_HAL_IRDA_REGISTER_CALLBACKS */
  2158. }
  2159.  
  2160. /**
  2161.   * @brief DMA IRDA receive process half complete callback.
  2162.   * @param  hdma  Pointer to a DMA_HandleTypeDef structure that contains
  2163.   *               the configuration information for the specified DMA.
  2164.   * @retval None
  2165.   */
  2166. static void IRDA_DMAReceiveHalfCplt(DMA_HandleTypeDef *hdma)
  2167. {
  2168.   IRDA_HandleTypeDef *hirda = (IRDA_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  2169.  
  2170. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2171.   /*Call registered Rx Half complete callback*/
  2172.   hirda->RxHalfCpltCallback(hirda);
  2173. #else
  2174.   /* Call legacy weak Rx Half complete callback */
  2175.   HAL_IRDA_RxHalfCpltCallback(hirda);
  2176. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  2177. }
  2178.  
  2179. /**
  2180.   * @brief  DMA IRDA communication error callback.
  2181.   * @param  hdma  Pointer to a DMA_HandleTypeDef structure that contains
  2182.   *               the configuration information for the specified DMA.
  2183.   * @retval None
  2184.   */
  2185. static void IRDA_DMAError(DMA_HandleTypeDef *hdma)
  2186. {
  2187.   uint32_t dmarequest = 0x00U;
  2188.   IRDA_HandleTypeDef *hirda = (IRDA_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  2189.  
  2190.   /* Stop IRDA DMA Tx request if ongoing */
  2191.   dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAT);
  2192.   if ((hirda->gState == HAL_IRDA_STATE_BUSY_TX) && dmarequest)
  2193.   {
  2194.     hirda->TxXferCount = 0U;
  2195.     IRDA_EndTxTransfer(hirda);
  2196.   }
  2197.  
  2198.   /* Stop IRDA DMA Rx request if ongoing */
  2199.   dmarequest = HAL_IS_BIT_SET(hirda->Instance->CR3, USART_CR3_DMAR);
  2200.   if ((hirda->RxState == HAL_IRDA_STATE_BUSY_RX) && dmarequest)
  2201.   {
  2202.     hirda->RxXferCount = 0U;
  2203.     IRDA_EndRxTransfer(hirda);
  2204.   }
  2205.  
  2206.   hirda->ErrorCode |= HAL_IRDA_ERROR_DMA;
  2207.  
  2208. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2209.   /* Call registered user error callback */
  2210.   hirda->ErrorCallback(hirda);
  2211. #else
  2212.   /* Call legacy weak user error callback */
  2213.   HAL_IRDA_ErrorCallback(hirda);
  2214. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  2215. }
  2216.  
  2217. /**
  2218.   * @brief  This function handles IRDA Communication Timeout.
  2219.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  2220.   *                the configuration information for the specified IRDA.
  2221.   * @param  Flag specifies the IRDA flag to check.
  2222.   * @param  Status The new Flag status (SET or RESET).
  2223.   * @param  Tickstart Tick start value
  2224.   * @param  Timeout Timeout duration
  2225.   * @retval HAL status
  2226.   */
  2227. static HAL_StatusTypeDef IRDA_WaitOnFlagUntilTimeout(IRDA_HandleTypeDef *hirda, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout)
  2228. {
  2229.   /* Wait until flag is set */
  2230.   while ((__HAL_IRDA_GET_FLAG(hirda, Flag) ? SET : RESET) == Status)
  2231.   {
  2232.     /* Check for the Timeout */
  2233.     if (Timeout != HAL_MAX_DELAY)
  2234.     {
  2235.       if ((Timeout == 0U) || ((HAL_GetTick() - Tickstart) > Timeout))
  2236.       {
  2237.         /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
  2238.         CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE));
  2239.         CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  2240.  
  2241.         hirda->gState  = HAL_IRDA_STATE_READY;
  2242.         hirda->RxState = HAL_IRDA_STATE_READY;
  2243.  
  2244.         /* Process Unlocked */
  2245.         __HAL_UNLOCK(hirda);
  2246.  
  2247.         return HAL_TIMEOUT;
  2248.       }
  2249.     }
  2250.   }
  2251.   return HAL_OK;
  2252. }
  2253.  
  2254. /**
  2255.   * @brief  End ongoing Tx transfer on IRDA peripheral (following error detection or Transmit completion).
  2256.   * @param  hirda IRDA handle.
  2257.   * @retval None
  2258.   */
  2259. static void IRDA_EndTxTransfer(IRDA_HandleTypeDef *hirda)
  2260. {
  2261.   /* Disable TXEIE and TCIE interrupts */
  2262.   CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
  2263.  
  2264.   /* At end of Tx process, restore hirda->gState to Ready */
  2265.   hirda->gState = HAL_IRDA_STATE_READY;
  2266. }
  2267.  
  2268. /**
  2269.   * @brief  End ongoing Rx transfer on IRDA peripheral (following error detection or Reception completion).
  2270.   * @param  hirda IRDA handle.
  2271.   * @retval None
  2272.   */
  2273. static void IRDA_EndRxTransfer(IRDA_HandleTypeDef *hirda)
  2274. {
  2275.   /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  2276.   CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
  2277.   CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  2278.  
  2279.   /* At end of Rx process, restore hirda->RxState to Ready */
  2280.   hirda->RxState = HAL_IRDA_STATE_READY;
  2281. }
  2282.  
  2283. /**
  2284.   * @brief  DMA IRDA communication abort callback, when initiated by HAL services on Error
  2285.   *         (To be called at end of DMA Abort procedure following error occurrence).
  2286.   * @param  hdma DMA handle.
  2287.   * @retval None
  2288.   */
  2289. static void IRDA_DMAAbortOnError(DMA_HandleTypeDef *hdma)
  2290. {
  2291.   IRDA_HandleTypeDef *hirda = (IRDA_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  2292.   hirda->RxXferCount = 0x00U;
  2293.   hirda->TxXferCount = 0x00U;
  2294.  
  2295. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2296.   /* Call registered user error callback */
  2297.   hirda->ErrorCallback(hirda);
  2298. #else
  2299.   /* Call legacy weak user error callback */
  2300.   HAL_IRDA_ErrorCallback(hirda);
  2301. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  2302. }
  2303.  
  2304. /**
  2305.   * @brief  DMA IRDA Tx communication abort callback, when initiated by user
  2306.   *         (To be called at end of DMA Tx Abort procedure following user abort request).
  2307.   * @note   When this callback is executed, User Abort complete call back is called only if no
  2308.   *         Abort still ongoing for Rx DMA Handle.
  2309.   * @param  hdma DMA handle.
  2310.   * @retval None
  2311.   */
  2312. static void IRDA_DMATxAbortCallback(DMA_HandleTypeDef *hdma)
  2313. {
  2314.   IRDA_HandleTypeDef *hirda = (IRDA_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  2315.  
  2316.   hirda->hdmatx->XferAbortCallback = NULL;
  2317.  
  2318.   /* Check if an Abort process is still ongoing */
  2319.   if (hirda->hdmarx != NULL)
  2320.   {
  2321.     if (hirda->hdmarx->XferAbortCallback != NULL)
  2322.     {
  2323.       return;
  2324.     }
  2325.   }
  2326.  
  2327.   /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
  2328.   hirda->TxXferCount = 0x00U;
  2329.   hirda->RxXferCount = 0x00U;
  2330.  
  2331.   /* Reset ErrorCode */
  2332.   hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  2333.  
  2334.   /* Restore hirda->gState and hirda->RxState to Ready */
  2335.   hirda->gState  = HAL_IRDA_STATE_READY;
  2336.   hirda->RxState = HAL_IRDA_STATE_READY;
  2337.  
  2338.   /* Call user Abort complete callback */
  2339. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2340.   /* Call registered Abort complete callback */
  2341.   hirda->AbortCpltCallback(hirda);
  2342. #else
  2343.   /* Call legacy weak Abort complete callback */
  2344.   HAL_IRDA_AbortCpltCallback(hirda);
  2345. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  2346. }
  2347.  
  2348. /**
  2349.   * @brief  DMA IRDA Rx communication abort callback, when initiated by user
  2350.   *         (To be called at end of DMA Rx Abort procedure following user abort request).
  2351.   * @note   When this callback is executed, User Abort complete call back is called only if no
  2352.   *         Abort still ongoing for Tx DMA Handle.
  2353.   * @param  hdma DMA handle.
  2354.   * @retval None
  2355.   */
  2356. static void IRDA_DMARxAbortCallback(DMA_HandleTypeDef *hdma)
  2357. {
  2358.   IRDA_HandleTypeDef *hirda = (IRDA_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  2359.  
  2360.   hirda->hdmarx->XferAbortCallback = NULL;
  2361.  
  2362.   /* Check if an Abort process is still ongoing */
  2363.   if (hirda->hdmatx != NULL)
  2364.   {
  2365.     if (hirda->hdmatx->XferAbortCallback != NULL)
  2366.     {
  2367.       return;
  2368.     }
  2369.   }
  2370.  
  2371.   /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
  2372.   hirda->TxXferCount = 0x00U;
  2373.   hirda->RxXferCount = 0x00U;
  2374.  
  2375.   /* Reset ErrorCode */
  2376.   hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
  2377.  
  2378.   /* Restore hirda->gState and hirda->RxState to Ready */
  2379.   hirda->gState  = HAL_IRDA_STATE_READY;
  2380.   hirda->RxState = HAL_IRDA_STATE_READY;
  2381.  
  2382.   /* Call user Abort complete callback */
  2383. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2384.   /* Call registered Abort complete callback */
  2385.   hirda->AbortCpltCallback(hirda);
  2386. #else
  2387.   /* Call legacy weak Abort complete callback */
  2388.   HAL_IRDA_AbortCpltCallback(hirda);
  2389. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  2390. }
  2391.  
  2392. /**
  2393.   * @brief  DMA IRDA Tx communication abort callback, when initiated by user by a call to
  2394.   *         HAL_IRDA_AbortTransmit_IT API (Abort only Tx transfer)
  2395.   *         (This callback is executed at end of DMA Tx Abort procedure following user abort request,
  2396.   *         and leads to user Tx Abort Complete callback execution).
  2397.   * @param  hdma DMA handle.
  2398.   * @retval None
  2399.   */
  2400. static void IRDA_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
  2401. {
  2402.   IRDA_HandleTypeDef *hirda = (IRDA_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  2403.  
  2404.   hirda->TxXferCount = 0x00U;
  2405.  
  2406.   /* Restore hirda->gState to Ready */
  2407.   hirda->gState = HAL_IRDA_STATE_READY;
  2408.  
  2409.   /* Call user Abort complete callback */
  2410. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2411.   /* Call registered Abort Transmit Complete Callback */
  2412.   hirda->AbortTransmitCpltCallback(hirda);
  2413. #else
  2414.   /* Call legacy weak Abort Transmit Complete Callback */
  2415.   HAL_IRDA_AbortTransmitCpltCallback(hirda);
  2416. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  2417. }
  2418.  
  2419. /**
  2420.   * @brief  DMA IRDA Rx communication abort callback, when initiated by user by a call to
  2421.   *         HAL_IRDA_AbortReceive_IT API (Abort only Rx transfer)
  2422.   *         (This callback is executed at end of DMA Rx Abort procedure following user abort request,
  2423.   *         and leads to user Rx Abort Complete callback execution).
  2424.   * @param  hdma DMA handle.
  2425.   * @retval None
  2426.   */
  2427. static void IRDA_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
  2428. {
  2429.   IRDA_HandleTypeDef *hirda = (IRDA_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  2430.  
  2431.   hirda->RxXferCount = 0x00U;
  2432.  
  2433.   /* Restore hirda->RxState to Ready */
  2434.   hirda->RxState = HAL_IRDA_STATE_READY;
  2435.  
  2436.   /* Call user Abort complete callback */
  2437. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2438.   /* Call registered Abort Receive Complete Callback */
  2439.   hirda->AbortReceiveCpltCallback(hirda);
  2440. #else
  2441.   /* Call legacy weak Abort Receive Complete Callback */
  2442.   HAL_IRDA_AbortReceiveCpltCallback(hirda);
  2443. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  2444. }
  2445.  
  2446. /**
  2447.  * @brief  Send an amount of data in non blocking mode.
  2448.  * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  2449.  *                the configuration information for the specified IRDA module.
  2450.  * @retval HAL status
  2451.  */
  2452. static HAL_StatusTypeDef IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda)
  2453. {
  2454.   uint16_t *tmp;
  2455.  
  2456.   /* Check that a Tx process is ongoing */
  2457.   if (hirda->gState == HAL_IRDA_STATE_BUSY_TX)
  2458.   {
  2459.     if (hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
  2460.     {
  2461.       tmp = (uint16_t *) hirda->pTxBuffPtr;
  2462.       hirda->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);
  2463.       if (hirda->Init.Parity == IRDA_PARITY_NONE)
  2464.       {
  2465.         hirda->pTxBuffPtr += 2U;
  2466.       }
  2467.       else
  2468.       {
  2469.         hirda->pTxBuffPtr += 1U;
  2470.       }
  2471.     }
  2472.     else
  2473.     {
  2474.       hirda->Instance->DR = (uint8_t)(*hirda->pTxBuffPtr++ & (uint8_t)0x00FF);
  2475.     }
  2476.  
  2477.     if (--hirda->TxXferCount == 0U)
  2478.     {
  2479.       /* Disable the IRDA Transmit Data Register Empty Interrupt */
  2480.       CLEAR_BIT(hirda->Instance->CR1, USART_CR1_TXEIE);
  2481.  
  2482.       /* Enable the IRDA Transmit Complete Interrupt */
  2483.       SET_BIT(hirda->Instance->CR1, USART_CR1_TCIE);
  2484.     }
  2485.  
  2486.     return HAL_OK;
  2487.   }
  2488.   else
  2489.   {
  2490.     return HAL_BUSY;
  2491.   }
  2492. }
  2493.  
  2494. /**
  2495.   * @brief  Wraps up transmission in non blocking mode.
  2496.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  2497.   *                the configuration information for the specified IRDA module.
  2498.   * @retval HAL status
  2499.   */
  2500. static HAL_StatusTypeDef IRDA_EndTransmit_IT(IRDA_HandleTypeDef *hirda)
  2501. {
  2502.   /* Disable the IRDA Transmit Complete Interrupt */
  2503.   CLEAR_BIT(hirda->Instance->CR1, USART_CR1_TCIE);
  2504.  
  2505.   /* Disable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */
  2506.   CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  2507.  
  2508.   /* Tx process is ended, restore hirda->gState to Ready */
  2509.   hirda->gState = HAL_IRDA_STATE_READY;
  2510.  
  2511. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2512.   /* Call registered Tx complete callback */
  2513.   hirda->TxCpltCallback(hirda);
  2514. #else
  2515.   /* Call legacy weak Tx complete callback */
  2516.   HAL_IRDA_TxCpltCallback(hirda);
  2517. #endif /* USE_HAL_IRDA_REGISTER_CALLBACK */
  2518.  
  2519.   return HAL_OK;
  2520. }
  2521.  
  2522. /**
  2523.   * @brief  Receives an amount of data in non blocking mode.
  2524.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  2525.   *                the configuration information for the specified IRDA module.
  2526.   * @retval HAL status
  2527.   */
  2528. static HAL_StatusTypeDef IRDA_Receive_IT(IRDA_HandleTypeDef *hirda)
  2529. {
  2530.   uint16_t *tmp;
  2531.   uint16_t  uhdata;
  2532.  
  2533.   /* Check that a Rx process is ongoing */
  2534.   if (hirda->RxState == HAL_IRDA_STATE_BUSY_RX)
  2535.   {
  2536.     uhdata = (uint16_t) READ_REG(hirda->Instance->DR);
  2537.     if (hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
  2538.     {
  2539.       tmp = (uint16_t *) hirda->pRxBuffPtr;
  2540.       if (hirda->Init.Parity == IRDA_PARITY_NONE)
  2541.       {
  2542.         *tmp = (uint16_t)(uhdata & (uint16_t)0x01FF);
  2543.         hirda->pRxBuffPtr += 2U;
  2544.       }
  2545.       else
  2546.       {
  2547.         *tmp = (uint16_t)(uhdata & (uint16_t)0x00FF);
  2548.         hirda->pRxBuffPtr += 1U;
  2549.       }
  2550.     }
  2551.     else
  2552.     {
  2553.       if (hirda->Init.Parity == IRDA_PARITY_NONE)
  2554.       {
  2555.         *hirda->pRxBuffPtr++ = (uint8_t)(uhdata & (uint8_t)0x00FF);
  2556.       }
  2557.       else
  2558.       {
  2559.         *hirda->pRxBuffPtr++ = (uint8_t)(uhdata & (uint8_t)0x007F);
  2560.       }
  2561.     }
  2562.  
  2563.     if (--hirda->RxXferCount == 0U)
  2564.     {
  2565.       /* Disable the IRDA Data Register not empty Interrupt */
  2566.       CLEAR_BIT(hirda->Instance->CR1, USART_CR1_RXNEIE);
  2567.  
  2568.       /* Disable the IRDA Parity Error Interrupt */
  2569.       CLEAR_BIT(hirda->Instance->CR1, USART_CR1_PEIE);
  2570.  
  2571.       /* Disable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */
  2572.       CLEAR_BIT(hirda->Instance->CR3, USART_CR3_EIE);
  2573.  
  2574.       /* Rx process is completed, restore hirda->RxState to Ready */
  2575.       hirda->RxState = HAL_IRDA_STATE_READY;
  2576.  
  2577. #if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)
  2578.       /* Call registered Rx complete callback */
  2579.       hirda->RxCpltCallback(hirda);
  2580. #else
  2581.       /* Call legacy weak Rx complete callback */
  2582.       HAL_IRDA_RxCpltCallback(hirda);
  2583. #endif /* USE_HAL_IRDA_REGISTER_CALLBACKS */
  2584.  
  2585.       return HAL_OK;
  2586.     }
  2587.     return HAL_OK;
  2588.   }
  2589.   else
  2590.   {
  2591.     return HAL_BUSY;
  2592.   }
  2593. }
  2594.  
  2595. /**
  2596.   * @brief  Configures the IRDA peripheral.
  2597.   * @param  hirda  Pointer to a IRDA_HandleTypeDef structure that contains
  2598.   *                the configuration information for the specified IRDA module.
  2599.   * @retval None
  2600.   */
  2601. static void IRDA_SetConfig(IRDA_HandleTypeDef *hirda)
  2602. {
  2603.   uint32_t pclk;
  2604.  
  2605.   /* Check the parameters */
  2606.   assert_param(IS_IRDA_INSTANCE(hirda->Instance));
  2607.   assert_param(IS_IRDA_BAUDRATE(hirda->Init.BaudRate));
  2608.   assert_param(IS_IRDA_WORD_LENGTH(hirda->Init.WordLength));
  2609.   assert_param(IS_IRDA_PARITY(hirda->Init.Parity));
  2610.   assert_param(IS_IRDA_MODE(hirda->Init.Mode));
  2611.   assert_param(IS_IRDA_POWERMODE(hirda->Init.IrDAMode));
  2612.  
  2613.   /*-------------------------- USART CR2 Configuration ------------------------*/
  2614.   /* Clear STOP[13:12] bits */
  2615.   CLEAR_BIT(hirda->Instance->CR2, USART_CR2_STOP);
  2616.  
  2617.   /*-------------------------- USART CR1 Configuration -----------------------*/
  2618.   /* Clear M, PCE, PS, TE and RE bits */
  2619.   CLEAR_BIT(hirda->Instance->CR1, (USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE));
  2620.  
  2621.   /* Configure the USART Word Length, Parity and mode:
  2622.      Set the M bits according to hirda->Init.WordLength value
  2623.      Set PCE and PS bits according to hirda->Init.Parity value
  2624.      Set TE and RE bits according to hirda->Init.Mode value */
  2625.   /* Write to USART CR1 */
  2626.   SET_BIT(hirda->Instance->CR1, (hirda->Init.WordLength | hirda->Init.Parity | hirda->Init.Mode));
  2627.  
  2628.   /*-------------------------- USART CR3 Configuration -----------------------*/
  2629.   /* Clear CTSE and RTSE bits */
  2630.   CLEAR_BIT(hirda->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE));
  2631.  
  2632.   /*-------------------------- USART BRR Configuration -----------------------*/
  2633.   if(hirda->Instance == USART1)
  2634.   {
  2635.     pclk = HAL_RCC_GetPCLK2Freq();
  2636.     SET_BIT(hirda->Instance->BRR, IRDA_BRR(pclk, hirda->Init.BaudRate));
  2637.   }
  2638.   else
  2639.   {
  2640.     pclk = HAL_RCC_GetPCLK1Freq();
  2641.     SET_BIT(hirda->Instance->BRR, IRDA_BRR(pclk, hirda->Init.BaudRate));
  2642.   }
  2643. }
  2644.  
  2645. /**
  2646.   * @}
  2647.   */
  2648.  
  2649. #endif /* HAL_IRDA_MODULE_ENABLED */
  2650. /**
  2651.   * @}
  2652.   */
  2653.  
  2654. /**
  2655.   * @}
  2656.   */
  2657.  
  2658. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  2659.