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/**

  ******************************************************************************

  * @file    stm32f0xx_hal_irda.c

  * @author  MCD Application Team

  * @brief   IRDA HAL module driver.

  *          This file provides firmware functions to manage the following

  *          functionalities of the IrDA (Infrared Data Association) Peripheral

  *          (IRDA)

  *           + Initialization and de-initialization functions

  *           + IO operation functions

  *           + Peripheral State and Errors functions

  *           + Peripheral Control functions

  *

  @verbatim

  ==============================================================================

                        ##### How to use this driver #####

  ==============================================================================

  [..]

    The IRDA HAL driver can be used as follows:

    (#) Declare a IRDA_HandleTypeDef handle structure (eg. IRDA_HandleTypeDef hirda).

    (#) Initialize the IRDA low level resources by implementing the HAL_IRDA_MspInit() API

        in setting the associated USART or UART in IRDA mode:

        (++) Enable the USARTx/UARTx interface clock.

        (++) USARTx/UARTx pins configuration:

            (+++) Enable the clock for the USARTx/UARTx GPIOs.

            (+++) Configure these USARTx/UARTx pins (TX as alternate function pull-up, RX as alternate function Input).

        (++) NVIC configuration if you need to use interrupt process (HAL_IRDA_Transmit_IT()

             and HAL_IRDA_Receive_IT() APIs):

            (+++) Configure the USARTx/UARTx interrupt priority.

            (+++) Enable the NVIC USARTx/UARTx IRQ handle.

            (+++) The specific IRDA interrupts (Transmission complete interrupt,

                  RXNE interrupt and Error Interrupts) will be managed using the macros

                  __HAL_IRDA_ENABLE_IT() and __HAL_IRDA_DISABLE_IT() inside the transmit and receive process.

        (++) DMA Configuration if you need to use DMA process (HAL_IRDA_Transmit_DMA()

             and HAL_IRDA_Receive_DMA() APIs):

            (+++) Declare a DMA handle structure for the Tx/Rx channel.

            (+++) Enable the DMAx interface clock.

            (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.

            (+++) Configure the DMA Tx/Rx channel.

            (+++) Associate the initialized DMA handle to the IRDA DMA Tx/Rx handle.

            (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx channel.

    (#) Program the Baud Rate, Word Length and Parity and Mode(Receiver/Transmitter),

        the normal or low power mode and the clock prescaler in the hirda handle Init structure.

    (#) Initialize the IRDA registers by calling the HAL_IRDA_Init() API:

        (++) This API configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)

             by calling the customized HAL_IRDA_MspInit() API.

         -@@- The specific IRDA interrupts (Transmission complete interrupt,

             RXNE interrupt and Error Interrupts) will be managed using the macros

             __HAL_IRDA_ENABLE_IT() and __HAL_IRDA_DISABLE_IT() inside the transmit and receive process.

    (#) Three operation modes are available within this driver :

     *** Polling mode IO operation ***

     =================================

     [..]

       (+) Send an amount of data in blocking mode using HAL_IRDA_Transmit()

       (+) Receive an amount of data in blocking mode using HAL_IRDA_Receive()

     *** Interrupt mode IO operation ***

     ===================================

     [..]

       (+) Send an amount of data in non-blocking mode using HAL_IRDA_Transmit_IT()

       (+) At transmission end of transfer HAL_IRDA_TxCpltCallback() is executed and user can

            add his own code by customization of function pointer HAL_IRDA_TxCpltCallback()

       (+) Receive an amount of data in non-blocking mode using HAL_IRDA_Receive_IT()

       (+) At reception end of transfer HAL_IRDA_RxCpltCallback() is executed and user can

            add his own code by customization of function pointer HAL_IRDA_RxCpltCallback()

       (+) In case of transfer Error, HAL_IRDA_ErrorCallback() function is executed and user can

            add his own code by customization of function pointer HAL_IRDA_ErrorCallback()

     *** DMA mode IO operation ***

     ==============================

     [..]

       (+) Send an amount of data in non-blocking mode (DMA) using HAL_IRDA_Transmit_DMA()

       (+) At transmission half of transfer HAL_IRDA_TxHalfCpltCallback() is executed and user can

            add his own code by customization of function pointer HAL_IRDA_TxHalfCpltCallback()

       (+) At transmission end of transfer HAL_IRDA_TxCpltCallback() is executed and user can

            add his own code by customization of function pointer HAL_IRDA_TxCpltCallback()

       (+) Receive an amount of data in non-blocking mode (DMA) using HAL_IRDA_Receive_DMA()

       (+) At reception half of transfer HAL_IRDA_RxHalfCpltCallback() is executed and user can

            add his own code by customization of function pointer HAL_IRDA_RxHalfCpltCallback()

       (+) At reception end of transfer HAL_IRDA_RxCpltCallback() is executed and user can

            add his own code by customization of function pointer HAL_IRDA_RxCpltCallback()

       (+) In case of transfer Error, HAL_IRDA_ErrorCallback() function is executed and user can

            add his own code by customization of function pointer HAL_IRDA_ErrorCallback()

     *** IRDA HAL driver macros list ***

     ====================================

     [..]

       Below the list of most used macros in IRDA HAL driver.

       (+) __HAL_IRDA_ENABLE: Enable the IRDA peripheral

       (+) __HAL_IRDA_DISABLE: Disable the IRDA peripheral

       (+) __HAL_IRDA_GET_FLAG : Check whether the specified IRDA flag is set or not

       (+) __HAL_IRDA_CLEAR_FLAG : Clear the specified IRDA pending flag

       (+) __HAL_IRDA_ENABLE_IT: Enable the specified IRDA interrupt

       (+) __HAL_IRDA_DISABLE_IT: Disable the specified IRDA interrupt

       (+) __HAL_IRDA_GET_IT_SOURCE: Check whether or not the specified IRDA interrupt is enabled

     [..]

       (@) You can refer to the IRDA HAL driver header file for more useful macros

    ##### Callback registration #####

    ==================================

    [..]

    The compilation define USE_HAL_IRDA_REGISTER_CALLBACKS when set to 1

    allows the user to configure dynamically the driver callbacks.

    [..]

    Use Function @ref HAL_IRDA_RegisterCallback() to register a user callback.

    Function @ref HAL_IRDA_RegisterCallback() allows to register following callbacks:

    (+) TxHalfCpltCallback        : Tx Half Complete Callback.

    (+) TxCpltCallback            : Tx Complete Callback.

    (+) RxHalfCpltCallback        : Rx Half Complete Callback.

    (+) RxCpltCallback            : Rx Complete Callback.

    (+) ErrorCallback             : Error Callback.

    (+) AbortCpltCallback         : Abort Complete Callback.

    (+) AbortTransmitCpltCallback : Abort Transmit Complete Callback.

    (+) AbortReceiveCpltCallback  : Abort Receive Complete Callback.

    (+) MspInitCallback           : IRDA MspInit.

    (+) MspDeInitCallback         : IRDA MspDeInit.

    This function takes as parameters the HAL peripheral handle, the Callback ID

    and a pointer to the user callback function.

    [..]

    Use function @ref HAL_IRDA_UnRegisterCallback() to reset a callback to the default

    weak (surcharged) function.

    @ref HAL_IRDA_UnRegisterCallback() takes as parameters the HAL peripheral handle,

    and the Callback ID.

    This function allows to reset following callbacks:

    (+) TxHalfCpltCallback        : Tx Half Complete Callback.

    (+) TxCpltCallback            : Tx Complete Callback.

    (+) RxHalfCpltCallback        : Rx Half Complete Callback.

    (+) RxCpltCallback            : Rx Complete Callback.

    (+) ErrorCallback             : Error Callback.

    (+) AbortCpltCallback         : Abort Complete Callback.

    (+) AbortTransmitCpltCallback : Abort Transmit Complete Callback.

    (+) AbortReceiveCpltCallback  : Abort Receive Complete Callback.

    (+) MspInitCallback           : IRDA MspInit.

    (+) MspDeInitCallback         : IRDA MspDeInit.

    [..]

    By default, after the @ref HAL_IRDA_Init() and when the state is HAL_IRDA_STATE_RESET

    all callbacks are set to the corresponding weak (surcharged) functions:

    examples @ref HAL_IRDA_TxCpltCallback(), @ref HAL_IRDA_RxHalfCpltCallback().

    Exception done for MspInit and MspDeInit functions that are respectively

    reset to the legacy weak (surcharged) functions in the @ref HAL_IRDA_Init()

    and @ref HAL_IRDA_DeInit() only when these callbacks are null (not registered beforehand).

    If not, MspInit or MspDeInit are not null, the @ref HAL_IRDA_Init() and @ref HAL_IRDA_DeInit()

    keep and use the user MspInit/MspDeInit callbacks (registered beforehand).

    [..]

    Callbacks can be registered/unregistered in HAL_IRDA_STATE_READY state only.

    Exception done MspInit/MspDeInit that can be registered/unregistered

    in HAL_IRDA_STATE_READY or HAL_IRDA_STATE_RESET state, thus registered (user)

    MspInit/DeInit callbacks can be used during the Init/DeInit.

    In that case first register the MspInit/MspDeInit user callbacks

    using @ref HAL_IRDA_RegisterCallback() before calling @ref HAL_IRDA_DeInit()

    or @ref HAL_IRDA_Init() function.

    [..]

    When The compilation define USE_HAL_IRDA_REGISTER_CALLBACKS is set to 0 or

    not defined, the callback registration feature is not available

    and weak (surcharged) callbacks are used.

  @endverbatim

  ******************************************************************************

  * @attention

  *

  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.

  * All rights reserved.</center></h2>

  *

  * This software component is licensed by ST under BSD 3-Clause license,

  * the "License"; You may not use this file except in compliance with the

  * License. You may obtain a copy of the License at:

  *                        opensource.org/licenses/BSD-3-Clause

  *

  ******************************************************************************

  */

/* Includes ------------------------------------------------------------------*/

#include "stm32f0xx_hal.h"

#if defined(USART_IRDA_SUPPORT)

/** @addtogroup STM32F0xx_HAL_Driver

  * @{

  */

/** @defgroup IRDA IRDA

  * @brief HAL IRDA module driver

  * @{

  */

#ifdef HAL_IRDA_MODULE_ENABLED

/* Private typedef -----------------------------------------------------------*/

/* Private define ------------------------------------------------------------*/

/** @defgroup IRDA_Private_Constants IRDA Private Constants

  * @{

  */

#define IRDA_TEACK_REACK_TIMEOUT            1000U                                   /*!< IRDA TX or RX enable acknowledge time-out value  */

#define IRDA_CR1_FIELDS  ((uint32_t)(USART_CR1_M | USART_CR1_PCE \

                                     | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE))  /*!< UART or USART CR1 fields of parameters set by IRDA_SetConfig API */

#define USART_BRR_MIN    0x10U        /*!< USART BRR minimum authorized value */

#define USART_BRR_MAX    0x0000FFFFU  /*!< USART BRR maximum authorized value */

/**

  * @}

  */

/* Private macros ------------------------------------------------------------*/

/** @defgroup IRDA_Private_Macros IRDA Private Macros

  * @{

  */

/** @brief  BRR division operation to set BRR register in 16-bit oversampling mode.

  * @param  __PCLK__ IRDA clock source.

  * @param  __BAUD__ Baud rate set by the user.

  * @retval Division result

  */

#define IRDA_DIV_SAMPLING16(__PCLK__, __BAUD__)  (((__PCLK__) + ((__BAUD__)/2U)) / (__BAUD__))

/**

  * @}

  */

/* Private variables ---------------------------------------------------------*/

/* Private function prototypes -----------------------------------------------*/

/** @addtogroup IRDA_Private_Functions

  * @{

  */

#if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)

void IRDA_InitCallbacksToDefault(IRDA_HandleTypeDef *hirda);

#endif /* USE_HAL_IRDA_REGISTER_CALLBACKS */

static HAL_StatusTypeDef IRDA_SetConfig(IRDA_HandleTypeDef *hirda);

static HAL_StatusTypeDef IRDA_CheckIdleState(IRDA_HandleTypeDef *hirda);

static HAL_StatusTypeDef IRDA_WaitOnFlagUntilTimeout(IRDA_HandleTypeDef *hirda, uint32_t Flag, FlagStatus Status,

                                                     uint32_t Tickstart, uint32_t Timeout);

static void IRDA_EndTxTransfer(IRDA_HandleTypeDef *hirda);

static void IRDA_EndRxTransfer(IRDA_HandleTypeDef *hirda);

static void IRDA_DMATransmitCplt(DMA_HandleTypeDef *hdma);

static void IRDA_DMATransmitHalfCplt(DMA_HandleTypeDef *hdma);

static void IRDA_DMAReceiveCplt(DMA_HandleTypeDef *hdma);

static void IRDA_DMAReceiveHalfCplt(DMA_HandleTypeDef *hdma);

static void IRDA_DMAError(DMA_HandleTypeDef *hdma);

static void IRDA_DMAAbortOnError(DMA_HandleTypeDef *hdma);

static void IRDA_DMATxAbortCallback(DMA_HandleTypeDef *hdma);

static void IRDA_DMARxAbortCallback(DMA_HandleTypeDef *hdma);

static void IRDA_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma);

static void IRDA_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma);

static void IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda);

static void IRDA_EndTransmit_IT(IRDA_HandleTypeDef *hirda);

static void IRDA_Receive_IT(IRDA_HandleTypeDef *hirda);

/**

  * @}

  */

/* Exported functions --------------------------------------------------------*/

/** @defgroup IRDA_Exported_Functions IRDA Exported Functions

  * @{

  */

/** @defgroup IRDA_Exported_Functions_Group1 Initialization and de-initialization functions

  *  @brief    Initialization and Configuration functions

  *

@verbatim

  ==============================================================================

              ##### Initialization and Configuration functions #####

  ==============================================================================

  [..]

  This subsection provides a set of functions allowing to initialize the USARTx

  in asynchronous IRDA mode.

  (+) For the asynchronous mode only these parameters can be configured:

      (++) Baud Rate

      (++) Word Length

      (++) Parity: If the parity is enabled, then the MSB bit of the data written

           in the data register is transmitted but is changed by the parity bit.

      (++) Power mode

      (++) Prescaler setting

      (++) Receiver/transmitter modes

  [..]

  The HAL_IRDA_Init() API follows the USART asynchronous configuration procedures

  (details for the procedures are available in reference manual).

@endverbatim

  Depending on the frame length defined either by the M bit (8-bits or 9-bits)

  or by the M1 and M0 bits (7-bit, 8-bit or 9-bit), the possible IRDA frame

  formats are listed in the following table.

    Table 1. IRDA frame format.

    +-----------------------------------------------------------------------+

    |       M bit       |  PCE bit  |             IRDA frame                |

    |-------------------|-----------|---------------------------------------|

    |         0         |     0     |    | SB |    8-bit data   | STB |     |

    |-------------------|-----------|---------------------------------------|

    |         0         |     1     |    | SB | 7-bit data | PB | STB |     |

    |-------------------|-----------|---------------------------------------|

    |         1         |     0     |    | SB |    9-bit data   | STB |     |

    |-------------------|-----------|---------------------------------------|

    |         1         |     1     |    | SB | 8-bit data | PB | STB |     |

    +-----------------------------------------------------------------------+

    |  M1 bit |  M0 bit |  PCE bit  |             IRDA frame                |

    |---------|---------|-----------|---------------------------------------|

    |    0    |    0    |    0      |    | SB |    8 bit data   | STB |     |

    |---------|---------|-----------|---------------------------------------|

    |    0    |    0    |    1      |    | SB | 7 bit data | PB | STB |     |

    |---------|---------|-----------|---------------------------------------|

    |    0    |    1    |    0      |    | SB |    9 bit data   | STB |     |

    |---------|---------|-----------|---------------------------------------|

    |    0    |    1    |    1      |    | SB | 8 bit data | PB | STB |     |

    |---------|---------|-----------|---------------------------------------|

    |    1    |    0    |    0      |    | SB |    7 bit data   | STB |     |

    |---------|---------|-----------|---------------------------------------|

    |    1    |    0    |    1      |    | SB | 6 bit data | PB | STB |     |

    +-----------------------------------------------------------------------+

  * @{

  */

/**

  * @brief Initialize the IRDA mode according to the specified

  *        parameters in the IRDA_InitTypeDef and initialize the associated handle.

  * @param hirda Pointer to a IRDA_HandleTypeDef structure that contains

  *               the configuration information for the specified IRDA module.

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_IRDA_Init(IRDA_HandleTypeDef *hirda)

{

  /* Check the IRDA handle allocation */

  if (hirda == NULL)

  {

    return HAL_ERROR;

  }

  /* Check the USART/UART associated to the IRDA handle */

  assert_param(IS_IRDA_INSTANCE(hirda->Instance));

  if (hirda->gState == HAL_IRDA_STATE_RESET)

  {

    /* Allocate lock resource and initialize it */

    hirda->Lock = HAL_UNLOCKED;

#if USE_HAL_IRDA_REGISTER_CALLBACKS == 1

    IRDA_InitCallbacksToDefault(hirda);

    if (hirda->MspInitCallback == NULL)

    {

      hirda->MspInitCallback = HAL_IRDA_MspInit;

    }

    /* Init the low level hardware */

    hirda->MspInitCallback(hirda);

#else

    /* Init the low level hardware : GPIO, CLOCK */

    HAL_IRDA_MspInit(hirda);

#endif /* USE_HAL_IRDA_REGISTER_CALLBACKS */

  }

  hirda->gState = HAL_IRDA_STATE_BUSY;

  /* Disable the Peripheral to update the configuration registers */

  __HAL_IRDA_DISABLE(hirda);

  /* Set the IRDA Communication parameters */

  if (IRDA_SetConfig(hirda) == HAL_ERROR)

  {

    return HAL_ERROR;

  }

  /* In IRDA mode, the following bits must be kept cleared:

  - LINEN, STOP and CLKEN bits in the USART_CR2 register,

  - SCEN and HDSEL bits in the USART_CR3 register.*/

  CLEAR_BIT(hirda->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN | USART_CR2_STOP));

  CLEAR_BIT(hirda->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL));

  /* set the UART/USART in IRDA mode */

  hirda->Instance->CR3 |= USART_CR3_IREN;

  /* Enable the Peripheral */

  __HAL_IRDA_ENABLE(hirda);

  /* TEACK and/or REACK to check before moving hirda->gState and hirda->RxState to Ready */

  return (IRDA_CheckIdleState(hirda));

}

/**

  * @brief DeInitialize the IRDA peripheral.

  * @param hirda Pointer to a IRDA_HandleTypeDef structure that contains

  *               the configuration information for the specified IRDA module.

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_IRDA_DeInit(IRDA_HandleTypeDef *hirda)

{

  /* Check the IRDA handle allocation */

  if (hirda == NULL)

  {

    return HAL_ERROR;

  }

  /* Check the USART/UART associated to the IRDA handle */

  assert_param(IS_IRDA_INSTANCE(hirda->Instance));

  hirda->gState = HAL_IRDA_STATE_BUSY;

  /* DeInit the low level hardware */

#if USE_HAL_IRDA_REGISTER_CALLBACKS == 1

  if (hirda->MspDeInitCallback == NULL)

  {

    hirda->MspDeInitCallback = HAL_IRDA_MspDeInit;

  }

  /* DeInit the low level hardware */

  hirda->MspDeInitCallback(hirda);

#else

  HAL_IRDA_MspDeInit(hirda);

#endif /* USE_HAL_IRDA_REGISTER_CALLBACKS */

  /* Disable the Peripheral */

  __HAL_IRDA_DISABLE(hirda);

  hirda->ErrorCode = HAL_IRDA_ERROR_NONE;

  hirda->gState    = HAL_IRDA_STATE_RESET;

  hirda->RxState   = HAL_IRDA_STATE_RESET;

  /* Process Unlock */

  __HAL_UNLOCK(hirda);

  return HAL_OK;

}

/**

  * @brief Initialize the IRDA MSP.

  * @param hirda Pointer to a IRDA_HandleTypeDef structure that contains

  *               the configuration information for the specified IRDA module.

  * @retval None

  */

__weak void HAL_IRDA_MspInit(IRDA_HandleTypeDef *hirda)

{

  /* Prevent unused argument(s) compilation warning */

  UNUSED(hirda);

  /* NOTE: This function should not be modified, when the callback is needed,

           the HAL_IRDA_MspInit can be implemented in the user file

   */

}

/**

  * @brief DeInitialize the IRDA MSP.

  * @param hirda Pointer to a IRDA_HandleTypeDef structure that contains

  *               the configuration information for the specified IRDA module.

  * @retval None

  */

__weak void HAL_IRDA_MspDeInit(IRDA_HandleTypeDef *hirda)

{

  /* Prevent unused argument(s) compilation warning */

  UNUSED(hirda);

  /* NOTE: This function should not be modified, when the callback is needed,

           the HAL_IRDA_MspDeInit can be implemented in the user file

   */

}

#if (USE_HAL_IRDA_REGISTER_CALLBACKS == 1)

/**

  * @brief  Register a User IRDA Callback

  *         To be used instead of the weak predefined callback

  * @param  hirda irda handle

  * @param  CallbackID ID of the callback to be registered

  *         This parameter can be one of the following values:

  *           @arg @ref HAL_IRDA_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID

  *           @arg @ref HAL_IRDA_TX_COMPLETE_CB_ID Tx Complete Callback ID

  *           @arg @ref HAL_IRDA_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID

  *           @arg @ref HAL_IRDA_RX_COMPLETE_CB_ID Rx Complete Callback ID

  *           @arg @ref HAL_IRDA_ERROR_CB_ID Error Callback ID

  *           @arg @ref HAL_IRDA_ABORT_COMPLETE_CB_ID Abort Complete Callback ID

  *           @arg @ref HAL_IRDA_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID

  *           @arg @ref HAL_IRDA_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID

  *           @arg @ref HAL_IRDA_MSPINIT_CB_ID MspInit Callback ID

  *           @arg @ref HAL_IRDA_MSPDEINIT_CB_ID MspDeInit Callback ID

  * @param  pCallback pointer to the Callback function

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_IRDA_RegisterCallback(IRDA_HandleTypeDef *hirda, HAL_IRDA_CallbackIDTypeDef CallbackID,

                                            pIRDA_CallbackTypeDef pCallback)

{

  HAL_StatusTypeDef status = HAL_OK;

  if (pCallback == NULL)

  {

    /* Update the error code */

    hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;

    return HAL_ERROR;

  }

  /* Process locked */

  __HAL_LOCK(hirda);

  if (hirda->gState == HAL_IRDA_STATE_READY)

  {

    switch (CallbackID)

    {

      case HAL_IRDA_TX_HALFCOMPLETE_CB_ID :

        hirda->TxHalfCpltCallback = pCallback;

        break;

      case HAL_IRDA_TX_COMPLETE_CB_ID :

        hirda->TxCpltCallback = pCallback;

        break;

      case HAL_IRDA_RX_HALFCOMPLETE_CB_ID :

        hirda->RxHalfCpltCallback = pCallback;

        break;

      case HAL_IRDA_RX_COMPLETE_CB_ID :

        hirda->RxCpltCallback = pCallback;

        break;

      case HAL_IRDA_ERROR_CB_ID :

        hirda->ErrorCallback = pCallback;

        break;

      case HAL_IRDA_ABORT_COMPLETE_CB_ID :

        hirda->AbortCpltCallback = pCallback;

        break;

      case HAL_IRDA_ABORT_TRANSMIT_COMPLETE_CB_ID :

        hirda->AbortTransmitCpltCallback = pCallback;

        break;

      case HAL_IRDA_ABORT_RECEIVE_COMPLETE_CB_ID :

        hirda->AbortReceiveCpltCallback = pCallback;

        break;

      case HAL_IRDA_MSPINIT_CB_ID :

        hirda->MspInitCallback = pCallback;

        break;

      case HAL_IRDA_MSPDEINIT_CB_ID :

        hirda->MspDeInitCallback = pCallback;

        break;

      default :

        /* Update the error code */

        hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;

        /* Return error status */

        status =  HAL_ERROR;

        break;

    }

  }

  else if (hirda->gState == HAL_IRDA_STATE_RESET)

  {

    switch (CallbackID)

    {

      case HAL_IRDA_MSPINIT_CB_ID :

        hirda->MspInitCallback = pCallback;

        break;

      case HAL_IRDA_MSPDEINIT_CB_ID :

        hirda->MspDeInitCallback = pCallback;

        break;

      default :

        /* Update the error code */

        hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;

        /* Return error status */

        status =  HAL_ERROR;

        break;

    }

  }

  else

  {

    /* Update the error code */

    hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;

    /* Return error status */

    status =  HAL_ERROR;

  }

  /* Release Lock */

  __HAL_UNLOCK(hirda);

  return status;

}

/**

  * @brief  Unregister an IRDA callback

  *         IRDA callback is redirected to the weak predefined callback

  * @param  hirda irda handle

  * @param  CallbackID ID of the callback to be unregistered

  *         This parameter can be one of the following values:

  *           @arg @ref HAL_IRDA_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID

  *           @arg @ref HAL_IRDA_TX_COMPLETE_CB_ID Tx Complete Callback ID

  *           @arg @ref HAL_IRDA_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID

  *           @arg @ref HAL_IRDA_RX_COMPLETE_CB_ID Rx Complete Callback ID

  *           @arg @ref HAL_IRDA_ERROR_CB_ID Error Callback ID

  *           @arg @ref HAL_IRDA_ABORT_COMPLETE_CB_ID Abort Complete Callback ID

  *           @arg @ref HAL_IRDA_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID

  *           @arg @ref HAL_IRDA_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID

  *           @arg @ref HAL_IRDA_MSPINIT_CB_ID MspInit Callback ID

  *           @arg @ref HAL_IRDA_MSPDEINIT_CB_ID MspDeInit Callback ID

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_IRDA_UnRegisterCallback(IRDA_HandleTypeDef *hirda, HAL_IRDA_CallbackIDTypeDef CallbackID)

{

  HAL_StatusTypeDef status = HAL_OK;

  /* Process locked */

  __HAL_LOCK(hirda);

  if (HAL_IRDA_STATE_READY == hirda->gState)

  {

    switch (CallbackID)

    {

      case HAL_IRDA_TX_HALFCOMPLETE_CB_ID :

        hirda->TxHalfCpltCallback = HAL_IRDA_TxHalfCpltCallback;               /* Legacy weak  TxHalfCpltCallback       */

        break;

      case HAL_IRDA_TX_COMPLETE_CB_ID :

        hirda->TxCpltCallback = HAL_IRDA_TxCpltCallback;                       /* Legacy weak TxCpltCallback            */

        break;

      case HAL_IRDA_RX_HALFCOMPLETE_CB_ID :

        hirda->RxHalfCpltCallback = HAL_IRDA_RxHalfCpltCallback;               /* Legacy weak RxHalfCpltCallback        */

        break;

      case HAL_IRDA_RX_COMPLETE_CB_ID :

        hirda->RxCpltCallback = HAL_IRDA_RxCpltCallback;                       /* Legacy weak RxCpltCallback            */

        break;

      case HAL_IRDA_ERROR_CB_ID :

        hirda->ErrorCallback = HAL_IRDA_ErrorCallback;                         /* Legacy weak ErrorCallback             */

        break;

      case HAL_IRDA_ABORT_COMPLETE_CB_ID :

        hirda->AbortCpltCallback = HAL_IRDA_AbortCpltCallback;                 /* Legacy weak AbortCpltCallback         */

        break;

      case HAL_IRDA_ABORT_TRANSMIT_COMPLETE_CB_ID :

        hirda->AbortTransmitCpltCallback = HAL_IRDA_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */

        break;

      case HAL_IRDA_ABORT_RECEIVE_COMPLETE_CB_ID :

        hirda->AbortReceiveCpltCallback = HAL_IRDA_AbortReceiveCpltCallback;   /* Legacy weak AbortReceiveCpltCallback  */

        break;

      case HAL_IRDA_MSPINIT_CB_ID :

        hirda->MspInitCallback = HAL_IRDA_MspInit;                             /* Legacy weak MspInitCallback           */

        break;

      case HAL_IRDA_MSPDEINIT_CB_ID :

        hirda->MspDeInitCallback = HAL_IRDA_MspDeInit;                         /* Legacy weak MspDeInitCallback         */

        break;

      default :

        /* Update the error code */

        hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;

        /* Return error status */

        status =  HAL_ERROR;

        break;

    }

  }

  else if (HAL_IRDA_STATE_RESET == hirda->gState)

  {

    switch (CallbackID)

    {

      case HAL_IRDA_MSPINIT_CB_ID :

        hirda->MspInitCallback = HAL_IRDA_MspInit;

        break;

      case HAL_IRDA_MSPDEINIT_CB_ID :

        hirda->MspDeInitCallback = HAL_IRDA_MspDeInit;

        break;

      default :

        /* Update the error code */

        hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;

        /* Return error status */

        status =  HAL_ERROR;

        break;

    }

  }

  else

  {

    /* Update the error code */

    hirda->ErrorCode |= HAL_IRDA_ERROR_INVALID_CALLBACK;

    /* Return error status */

    status =  HAL_ERROR;

  }

  /* Release Lock */

  __HAL_UNLOCK(hirda);

  return status;

}

#endif /* USE_HAL_IRDA_REGISTER_CALLBACKS */

/**

  * @}

  */

/** @defgroup IRDA_Exported_Functions_Group2 IO operation functions

  *  @brief   IRDA Transmit and Receive functions

  *

@verbatim

 ===============================================================================

                         ##### IO operation functions #####

 ===============================================================================

  [..]

    This subsection provides a set of functions allowing to manage the IRDA data transfers.

  [..]

    IrDA is a half duplex communication protocol. If the Transmitter is busy, any data

    on the IrDA receive line will be ignored by the IrDA decoder and if the Receiver

    is busy, data on the TX from the USART to IrDA will not be encoded by IrDA.

    While receiving data, transmission should be avoided as the data to be transmitted

    could be corrupted.

  [..]

    (#) There are two modes of transfer:

        (++) Blocking mode: the communication is performed in polling mode.

             The HAL status of all data processing is returned by the same function

             after finishing transfer.

        (++) Non-Blocking mode: the communication is performed using Interrupts

             or DMA, these API's return the HAL status.

             The end of the data processing will be indicated through the

             dedicated IRDA IRQ when using Interrupt mode or the DMA IRQ when

             using DMA mode.

             The HAL_IRDA_TxCpltCallback(), HAL_IRDA_RxCpltCallback() user callbacks

             will be executed respectively at the end of the Transmit or Receive process

             The HAL_IRDA_ErrorCallback() user callback will be executed when a communication error is detected

    (#) Blocking mode APIs are :

        (++) HAL_IRDA_Transmit()

        (++) HAL_IRDA_Receive()

    (#) Non Blocking mode APIs with Interrupt are :

        (++) HAL_IRDA_Transmit_IT()

        (++) HAL_IRDA_Receive_IT()

        (++) HAL_IRDA_IRQHandler()

    (#) Non Blocking mode functions with DMA are :

        (++) HAL_IRDA_Transmit_DMA()

        (++) HAL_IRDA_Receive_DMA()

        (++) HAL_IRDA_DMAPause()

        (++) HAL_IRDA_DMAResume()

        (++) HAL_IRDA_DMAStop()

    (#) A set of Transfer Complete Callbacks are provided in Non Blocking mode:

        (++) HAL_IRDA_TxHalfCpltCallback()

        (++) HAL_IRDA_TxCpltCallback()

        (++) HAL_IRDA_RxHalfCpltCallback()

        (++) HAL_IRDA_RxCpltCallback()

        (++) HAL_IRDA_ErrorCallback()

    (#) Non-Blocking mode transfers could be aborted using Abort API's :

        (++) HAL_IRDA_Abort()

        (++) HAL_IRDA_AbortTransmit()

        (++) HAL_IRDA_AbortReceive()

        (++) HAL_IRDA_Abort_IT()

        (++) HAL_IRDA_AbortTransmit_IT()

        (++) HAL_IRDA_AbortReceive_IT()

    (#) For Abort services based on interrupts (HAL_IRDA_Abortxxx_IT), a set of Abort Complete Callbacks are provided:

        (++) HAL_IRDA_AbortCpltCallback()

        (++) HAL_IRDA_AbortTransmitCpltCallback()

        (++) HAL_IRDA_AbortReceiveCpltCallback()

    (#) In Non-Blocking mode transfers, possible errors are split into 2 categories.

        Errors are handled as follows :

        (++) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is

             to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception .

             Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type,

             and HAL_IRDA_ErrorCallback() user callback is executed. Transfer is kept ongoing on IRDA side.

             If user wants to abort it, Abort services should be called by user.

        (++) Error is considered as Blocking : Transfer could not be completed properly and is aborted.

             This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode.

             Error code is set to allow user to identify error type, and HAL_IRDA_ErrorCallback() user callback is executed.

@endverbatim

  * @{

  */

/**

  * @brief Send an amount of data in blocking mode.

  * @note  When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),

  *        the sent data is handled as a set of u16. In this case, Size must reflect the number

  *        of u16 available through pData.

  * @param hirda Pointer to a IRDA_HandleTypeDef structure that contains

  *               the configuration information for the specified IRDA module.

  * @param pData Pointer to data buffer (u8 or u16 data elements).

  * @param Size Amount of data elements (u8 or u16) to be sent.

  * @param Timeout Specify timeout value.

  * @retval HAL status

  */

/**

  * @note   When IRDA parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),

  *         address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)

  *         (as sent data will be handled using u16 pointer cast). Depending on compilation chain,

  *         use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.

  */

HAL_StatusTypeDef HAL_IRDA_Transmit(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)

{

  uint8_t  *pdata8bits;

  uint16_t *pdata16bits;

  uint32_t tickstart;

  /* Check that a Tx process is not already ongoing */

  if (hirda->gState == HAL_IRDA_STATE_READY)

  {

    if ((pData == NULL) || (Size == 0U))

    {

      return  HAL_ERROR;

    }

    /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter

       should be aligned on a u16 frontier, as data to be filled into TDR will be

       handled through a u16 cast. */

    if ((hirda->Init.WordLength == IRDA_WORDLENGTH_9B) && (hirda->Init.Parity == IRDA_PARITY_NONE))

    {

      if ((((uint32_t)pData) & 1U) != 0U)

      {

        return  HAL_ERROR;

      }

    }

    /* Process Locked */

    __HAL_LOCK(hirda);

    hirda->ErrorCode = HAL_IRDA_ERROR_NONE;

    hirda->gState = HAL_IRDA_STATE_BUSY_TX;

    /* Init tickstart for timeout managment*/

    tickstart = HAL_GetTick();

    hirda->TxXferSize = Size;

    hirda->TxXferCount = Size;

    /* In case of 9bits/No Parity transfer, pData needs to be handled as a uint16_t pointer */

    if ((hirda->Init.WordLength == IRDA_WORDLENGTH_9B) && (hirda->Init.Parity == IRDA_PARITY_NONE))

    {

      pdata8bits  = NULL;

      pdata16bits = (uint16_t *) pData; /* Derogation R.11.3 */

    }

    else

    {

      pdata8bits  = pData;

      pdata16bits = NULL;

    }

    while (hirda->TxXferCount > 0U)

    {

      hirda->TxXferCount--;

      if (IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)

      {

        return HAL_TIMEOUT;

      }

      if (pdata8bits == NULL)

      {

        hirda->Instance->TDR = (uint16_t)(*pdata16bits & 0x01FFU);

        pdata16bits++;

      }

      else

      {

        hirda->Instance->TDR = (uint8_t)(*pdata8bits & 0xFFU);

        pdata8bits++;

      }

    }

    if (IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)

    {

      return HAL_TIMEOUT;

    }

    /* At end of Tx process, restore hirda->gState to Ready */

    hirda->gState = HAL_IRDA_STATE_READY;

    /* Process Unlocked */

    __HAL_UNLOCK(hirda);

    return HAL_OK;

  }

  else

  {

    return HAL_BUSY;

  }

}

/**

  * @brief Receive an amount of data in blocking mode.

  * @note  When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),

  *        the received data is handled as a set of u16. In this case, Size must reflect the number

  *        of u16 available through pData.

  * @param  hirda Pointer to a IRDA_HandleTypeDef structure that contains

  *                the configuration information for the specified IRDA module.

  * @param pData Pointer to data buffer (u8 or u16 data elements).

  * @param Size Amount of data elements (u8 or u16) to be received.

  * @param Timeout Specify timeout value.

  * @retval HAL status

  */

/**

  * @note   When IRDA parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),

  *         address of user data buffer for storing data to be received, should be aligned on a half word frontier (16 bits)

  *         (as received data will be handled using u16 pointer cast). Depending on compilation chain,

  *         use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.

  */

HAL_StatusTypeDef HAL_IRDA_Receive(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)

{

  uint8_t  *pdata8bits;

  uint16_t *pdata16bits;

  uint16_t uhMask;

  uint32_t tickstart;

  /* Check that a Rx process is not already ongoing */

  if (hirda->RxState == HAL_IRDA_STATE_READY)

  {

    if ((pData == NULL) || (Size == 0U))

    {

      return  HAL_ERROR;