/**
* @brief Receive an amount of data in non-blocking mode.
* Function is called under interruption only, once
* interruptions have been enabled by HAL_IRDA_Receive_IT().
* @param hirda: Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @retval HAL status
*/
static HAL_StatusTypeDef IRDA_Receive_IT(IRDA_HandleTypeDef *hirda)
{
uint16_t* tmp;
uint16_t uhMask = hirda->Mask;
/* Check that a Rx process is ongoing */
if (hirda->RxState == HAL_IRDA_STATE_BUSY_RX)
{
if ((hirda->Init.WordLength == IRDA_WORDLENGTH_9B) && (hirda->Init.Parity == IRDA_PARITY_NONE))
{
tmp = (uint16_t*) hirda->pRxBuffPtr ;
*tmp = (uint16_t)(hirda->Instance->RDR & uhMask);
hirda->pRxBuffPtr +=2;
}
else
{
*hirda->pRxBuffPtr++ = (uint8_t)(hirda->Instance->RDR & (uint8_t)uhMask);
}
if(--hirda->RxXferCount == 0)
{
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_RXNE);
/* Disable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_ERR);
/* Disable the IRDA Parity Error Interrupt */
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_PE);
/* Rx process is completed, restore hirda->RxState to Ready */
hirda->RxState = HAL_IRDA_STATE_READY;
HAL_IRDA_RxCpltCallback(hirda);
return HAL_OK;
}
return HAL_OK;
}
else
{
/* Clear RXNE interrupt flag */
__HAL_IRDA_SEND_REQ(hirda, IRDA_RXDATA_FLUSH_REQUEST);
return HAL_BUSY;
}
}
/**
* @brief This function handles IRDA interrupt request.
* @param hirda: IRDA handle
* @retval None
*/
void HAL_IRDA_IRQHandler(IRDA_HandleTypeDef *hirda)
{
/* IRDA parity error interrupt occurred -------------------------------------*/
if((__HAL_IRDA_GET_IT(hirda, IRDA_IT_PE) != RESET) && (__HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_PE) != RESET))
{
__HAL_IRDA_CLEAR_PEFLAG(hirda);
hirda->ErrorCode |= HAL_IRDA_ERROR_PE;
/* Set the IRDA state ready to be able to start again the process */
hirda->State = HAL_IRDA_STATE_READY;
}
/* IRDA frame error interrupt occured --------------------------------------*/
if((__HAL_IRDA_GET_IT(hirda, IRDA_IT_FE) != RESET) && (__HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_ERR) != RESET))
{
__HAL_IRDA_CLEAR_FEFLAG(hirda);
hirda->ErrorCode |= HAL_IRDA_ERROR_FE;
/* Set the IRDA state ready to be able to start again the process */
hirda->State = HAL_IRDA_STATE_READY;
}
/* IRDA noise error interrupt occured --------------------------------------*/
if((__HAL_IRDA_GET_IT(hirda, IRDA_IT_NE) != RESET) && (__HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_ERR) != RESET))
{
__HAL_IRDA_CLEAR_NEFLAG(hirda);
hirda->ErrorCode |= HAL_IRDA_ERROR_NE;
/* Set the IRDA state ready to be able to start again the process */
hirda->State = HAL_IRDA_STATE_READY;
}
/* IRDA Over-Run interrupt occured -----------------------------------------*/
if((__HAL_IRDA_GET_IT(hirda, IRDA_IT_ORE) != RESET) && (__HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_ERR) != RESET))
{
__HAL_IRDA_CLEAR_OREFLAG(hirda);
hirda->ErrorCode |= HAL_IRDA_ERROR_ORE;
/* Set the IRDA state ready to be able to start again the process */
hirda->State = HAL_IRDA_STATE_READY;
}
/* Call IRDA Error Call back function if need be --------------------------*/
if(hirda->ErrorCode != HAL_IRDA_ERROR_NONE)
{
HAL_IRDA_ErrorCallback(hirda);
}
/* IRDA in mode Receiver ---------------------------------------------------*/
if((__HAL_IRDA_GET_IT(hirda, IRDA_IT_RXNE) != RESET) && (__HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_RXNE) != RESET))
{
IRDA_Receive_IT(hirda);
/* Clear RXNE interrupt flag */
__HAL_IRDA_SEND_REQ(hirda, IRDA_RXDATA_FLUSH_REQUEST);
}
/* IRDA in mode Transmitter ------------------------------------------------*/
if((__HAL_IRDA_GET_IT(hirda, IRDA_IT_TXE) != RESET) &&(__HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_TXE) != RESET))
{
IRDA_Transmit_IT(hirda);
}
/* IRDA in mode Transmitter (transmission end) -----------------------------*/
if((__HAL_IRDA_GET_IT(hirda, IRDA_IT_TC) != RESET) &&(__HAL_IRDA_GET_IT_SOURCE(hirda, IRDA_IT_TC) != RESET))
{
IRDA_EndTransmit_IT(hirda);
}
}
