/**
* @brief Receive an amount of data in blocking mode
* @param hirda: IRDA handle
* @param pData: pointer to data buffer
* @param Size: amount of data to be received
* @param Timeout: Duration of the timeout
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Receive(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp;
uint16_t uhMask;
if ((hirda->State == HAL_IRDA_STATE_READY) || (hirda->State == HAL_IRDA_STATE_BUSY_TX))
{
if((pData == NULL) || (Size == 0U))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
if(hirda->State == HAL_IRDA_STATE_BUSY_TX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
hirda->RxXferSize = Size;
hirda->RxXferCount = Size;
/* Computation of the mask to apply to the RDR register
of the UART associated to the IRDA */
IRDA_MASK_COMPUTATION(hirda);
uhMask = hirda->Mask;
/* Check data remaining to be received */
while(hirda->RxXferCount > 0U)
{
hirda->RxXferCount--;
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if ((hirda->Init.WordLength == IRDA_WORDLENGTH_9B) && (hirda->Init.Parity == IRDA_PARITY_NONE))
{
tmp = (uint16_t*) pData ;
*tmp = (uint16_t)(hirda->Instance->RDR & uhMask);
pData +=2U;
}
else
{
*pData++ = (uint8_t)(hirda->Instance->RDR & (uint8_t)uhMask);
}
}
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX;
}
else
{
hirda->State = HAL_IRDA_STATE_READY;
}
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receive an amount of data in blocking mode.
* @param hirda: Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @param pData: Pointer to data buffer.
* @param Size: Amount of data to be received.
* @param Timeout: Specify timeout value.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Receive(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp;
uint16_t uhMask;
uint32_t tickstart = 0;
/* Check that a Rx process is not already ongoing */
if(hirda->RxState == HAL_IRDA_STATE_READY)
{
if((pData == NULL) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->RxState = HAL_IRDA_STATE_BUSY_RX;
/* Init tickstart for timeout managment*/
tickstart = HAL_GetTick();
hirda->RxXferSize = Size;
hirda->RxXferCount = Size;
/* Computation of the mask to apply to the RDR register
of the UART associated to the IRDA */
IRDA_MASK_COMPUTATION(hirda);
uhMask = hirda->Mask;
/* Check data remaining to be received */
while(hirda->RxXferCount > 0)
{
hirda->RxXferCount--;
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if ((hirda->Init.WordLength == IRDA_WORDLENGTH_9B) && (hirda->Init.Parity == IRDA_PARITY_NONE))
{
tmp = (uint16_t*) pData ;
*tmp = (uint16_t)(hirda->Instance->RDR & uhMask);
pData +=2;
}
else
{
*pData++ = (uint8_t)(hirda->Instance->RDR & (uint8_t)uhMask);
}
}
/* At end of Rx process, restore hirda->RxState to Ready */
hirda->RxState = HAL_IRDA_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
