/**
* @brief Check the IRDA Idle State
* @param hirda: IRDA handle
* @retval HAL status
*/
static HAL_StatusTypeDef IRDA_CheckIdleState(IRDA_HandleTypeDef *hirda)
{
/* Initialize the IRDA ErrorCode */
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
/* Check if the Transmitter is enabled */
if((hirda->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
{
/* Wait until TEACK flag is set */
if(IRDA_WaitOnFlagUntilTimeout(hirda, USART_ISR_TEACK, RESET, TEACK_REACK_TIMEOUT) != HAL_OK)
{
hirda->State= HAL_IRDA_STATE_TIMEOUT;
return HAL_TIMEOUT;
}
}
/* Check if the Receiver is enabled */
if((hirda->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, USART_ISR_REACK, RESET, TEACK_REACK_TIMEOUT) != HAL_OK)
{
hirda->State= HAL_IRDA_STATE_TIMEOUT;
return HAL_TIMEOUT;
}
}
/* Process Unlocked */
__HAL_UNLOCK(hirda);
/* Initialize the IRDA state*/
hirda->State= HAL_IRDA_STATE_READY;
return HAL_OK;
}
/**
* @brief DMA IRDA Tx transfer completed callback
* @param hdma: DMA handle
* @retval None
*/
static void IRDA_DMATransmitCplt(DMA_HandleTypeDef *hdma)
{
IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
hirda->TxXferCount = 0;
/* Disable the DMA transfer for transmit request by setting the DMAT bit
in the IRDA CR3 register */
hirda->Instance->CR3 &= (uint16_t)~((uint16_t)USART_CR3_DMAT);
/* Wait for IRDA TC Flag */
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, IRDA_TXDMA_TIMEOUTVALUE) != HAL_OK)
{
/* Timeout Occured */
HAL_IRDA_ErrorCallback(hirda);
}
else
{
/* No Timeout */
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_READY;
}
HAL_IRDA_TxCpltCallback(hirda);
}
}
/**
* @brief DMA IRDA transmit process complete callback.
* @param hdma : DMA handle
* @retval None
*/
static void IRDA_DMATransmitCplt(DMA_HandleTypeDef *hdma)
{
IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
hirda->TxXferCount = 0;
/* Wait for IRDA TC Flag */
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, IRDA_TIMEOUT_VALUE) != HAL_OK)
{
/* Timeout Occured */
hirda->State = HAL_IRDA_STATE_TIMEOUT;
HAL_IRDA_ErrorCallback(hirda);
}
else
{
/* No Timeout */
/* Check if a receive process is ongoing or not */
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_READY;
}
HAL_IRDA_TxCpltCallback(hirda);
}
}
/**
* @brief Receive an amount of data in non blocking mode.
* Function called under interruption only, once
* interruptions have been enabled by HAL_IRDA_Transmit_IT()
* @param hirda: IRDA handle
* @retval HAL status
*/
static HAL_StatusTypeDef IRDA_Transmit_IT(IRDA_HandleTypeDef *hirda)
{
uint16_t* tmp;
if((hirda->State == HAL_IRDA_STATE_BUSY_TX) || (hirda->State == HAL_IRDA_STATE_BUSY_TX_RX))
{
if(hirda->TxXferCount == 0)
{
/* Disable the IRDA Transmit Data Register Empty Interrupt */
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_TXE);
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
else
{
/* Disable the IRDA Error Interrupt: (Frame error, noise error, overrun error) */
__HAL_IRDA_DISABLE_IT(hirda, IRDA_IT_ERR);
hirda->State = HAL_IRDA_STATE_READY;
}
/* Wait on TC flag to be able to start a second transfer */
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_IT_TC, RESET, IRDA_TIMEOUT_VALUE) != HAL_OK)
{
return HAL_TIMEOUT;
}
HAL_IRDA_TxCpltCallback(hirda);
return HAL_OK;
}
else
{
if ((hirda->Init.WordLength == IRDA_WORDLENGTH_9B) && (hirda->Init.Parity == IRDA_PARITY_NONE))
{
tmp = (uint16_t*) hirda->pTxBuffPtr;
hirda->Instance->TDR = (*tmp & (uint16_t)0x01FF);
hirda->pTxBuffPtr += 2;
}
else
{
hirda->Instance->TDR = (uint8_t)(*hirda->pTxBuffPtr++ & (uint8_t)0xFF);
}
hirda->TxXferCount--;
return HAL_OK;
}
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Check the IRDA Idle State.
* @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_CheckIdleState(IRDA_HandleTypeDef *hirda)
{
uint32_t tickstart = 0;
/* Initialize the IRDA ErrorCode */
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
/* Init tickstart for timeout managment*/
tickstart = HAL_GetTick();
/* Check if the Transmitter is enabled */
if((hirda->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
{
/* Wait until TEACK flag is set */
if(IRDA_WaitOnFlagUntilTimeout(hirda, USART_ISR_TEACK, RESET, tickstart, IRDA_TEACK_REACK_TIMEOUT) != HAL_OK)
{
/* Timeout occurred */
return HAL_TIMEOUT;
}
}
/* Check if the Receiver is enabled */
if((hirda->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, USART_ISR_REACK, RESET, tickstart, IRDA_TEACK_REACK_TIMEOUT) != HAL_OK)
{
/* Timeout occurred */
return HAL_TIMEOUT;
}
}
/* Initialize the IRDA state*/
hirda->gState= HAL_IRDA_STATE_READY;
hirda->RxState= HAL_IRDA_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
/**
* @brief DMA IRDA transmit process complete callback.
* @param hdma : DMA handle
* @retval None
*/
static void IRDA_DMATransmitCplt(DMA_HandleTypeDef *hdma)
{
IRDA_HandleTypeDef* hirda = ( IRDA_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
/* DMA Normal mode */
if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
{
hirda->TxXferCount = 0;
/* Disable the DMA transfer for transmit request by setting the DMAT bit
in the IRDA CR3 register */
hirda->Instance->CR3 &= (uint16_t)~((uint16_t)USART_CR3_DMAT);
/* Wait for IRDA TC Flag */
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, IRDA_TIMEOUT_VALUE) != HAL_OK)
{
/* Timeout occurred */
hirda->State = HAL_IRDA_STATE_TIMEOUT;
HAL_IRDA_ErrorCallback(hirda);
}
else
{
/* No Timeout */
/* Check if a receive process is ongoing or not */
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_READY;
}
HAL_IRDA_TxCpltCallback(hirda);
}
}
/* DMA Circular mode */
else
{
HAL_IRDA_TxCpltCallback(hirda);
}
}
/**
* @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 Send an amount of data in blocking mode
* @param hirda: IRDA handle
* @param pData: pointer to data buffer
* @param Size: amount of data to be sent
* @param Timeout: Duration of the timeout
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Transmit(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp;
if ((hirda->State == HAL_IRDA_STATE_READY) || (hirda->State == HAL_IRDA_STATE_BUSY_RX))
{
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_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_BUSY_TX;
}
hirda->TxXferSize = Size;
hirda->TxXferCount = Size;
while(hirda->TxXferCount > 0U)
{
hirda->TxXferCount--;
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if ((hirda->Init.WordLength == IRDA_WORDLENGTH_9B) && (hirda->Init.Parity == IRDA_PARITY_NONE))
{
tmp = (uint16_t*) pData;
hirda->Instance->TDR = (*tmp & (uint16_t)0x01FFU);
pData +=2;
}
else
{
hirda->Instance->TDR = (*pData++ & (uint8_t)0xFFU);
}
}
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
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 = 0;
uint32_t tmp_state = 0;
tmp_state = hirda->State;
if((tmp_state == HAL_IRDA_STATE_READY) || (tmp_state == HAL_IRDA_STATE_BUSY_TX))
{
if((pData == NULL) || (Size == 0))
{
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;
/* Check the remain data to be received */
while(hirda->RxXferCount > 0)
{
if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
tmp = (uint16_t*) pData ;
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
*tmp = (uint16_t)(hirda->Instance->DR & IRDA_DR_MASK_U16_9DATABITS);
pData +=2;
}
else
{
*tmp = (uint16_t)(hirda->Instance->DR & IRDA_DR_MASK_U16_8DATABITS);
pData +=1;
}
}
else
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
*pData++ = (uint8_t)(hirda->Instance->DR & IRDA_DR_MASK_U8_8DATABITS);
}
else
{
*pData++ = (uint8_t)(hirda->Instance->DR & IRDA_DR_MASK_U8_7DATABITS);
}
}
hirda->RxXferCount--;
}
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 Sends an amount of data in blocking mode.
* @param hirda: Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @param pData: Pointer to data buffer
* @param Size: Amount of data to be sent
* @param Timeout: Specify timeout value
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Transmit(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp = 0;
uint32_t tmp1 = 0;
tmp1 = hirda->State;
if((tmp1 == HAL_IRDA_STATE_READY) || (tmp1 == HAL_IRDA_STATE_BUSY_RX))
{
if((pData == HAL_NULL) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
if(hirda->State == HAL_IRDA_STATE_BUSY_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_TX_RX;
}
else
{
hirda->State = HAL_IRDA_STATE_BUSY_TX;
}
hirda->TxXferSize = Size;
hirda->TxXferCount = Size;
while(hirda->TxXferCount > 0)
{
if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
tmp = (uint16_t*) pData;
WRITE_REG(hirda->Instance->DR,(*tmp & IRDA_DR_MASK_U16_9DATABITS));
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
pData +=2;
}
else
{
pData +=1;
}
}
else
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
WRITE_REG(hirda->Instance->DR, (*pData++ & IRDA_DR_MASK_U8_8DATABITS));
}
hirda->TxXferCount--;
}
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if(hirda->State == HAL_IRDA_STATE_BUSY_TX_RX)
{
hirda->State = HAL_IRDA_STATE_BUSY_RX;
}
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;
/* Check that a Rx process is not already ongoing */
if(hirda->RxState == HAL_IRDA_STATE_READY)
{
if((pData == NULL) || (Size == 0U))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->RxState = HAL_IRDA_STATE_BUSY_RX;
hirda->RxXferSize = Size;
hirda->RxXferCount = Size;
/* Check the remain data to be received */
while(hirda->RxXferCount > 0U)
{
hirda->RxXferCount--;
if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
tmp = (uint16_t*) pData ;
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
*tmp = (uint16_t)(hirda->Instance->DR & (uint16_t)0x01FFU);
pData +=2U;
}
else
{
*tmp = (uint16_t)(hirda->Instance->DR & (uint16_t)0x00FFU);
pData +=1U;
}
}
else
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_RXNE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
*pData++ = (uint8_t)(hirda->Instance->DR & (uint8_t)0x00FFU);
}
else
{
*pData++ = (uint8_t)(hirda->Instance->DR & (uint8_t)0x007FU);
}
}
}
/* At end of Rx process, restore hirda->RxState to Ready */
hirda->RxState = HAL_IRDA_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Sends an amount of data in blocking mode.
* @param hirda: pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @param pData: Pointer to data buffer
* @param Size: Amount of data to be sent
* @param Timeout: Specify timeout value
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Transmit(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp;
/* Check that a Tx process is not already ongoing */
if(hirda->gState == HAL_IRDA_STATE_READY)
{
if((pData == NULL) || (Size == 0U))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hirda);
hirda->ErrorCode = HAL_IRDA_ERROR_NONE;
hirda->gState = HAL_IRDA_STATE_BUSY_TX;
hirda->TxXferSize = Size;
hirda->TxXferCount = Size;
while(hirda->TxXferCount > 0U)
{
hirda->TxXferCount--;
if(hirda->Init.WordLength == IRDA_WORDLENGTH_9B)
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
tmp = (uint16_t*) pData;
hirda->Instance->DR = (*tmp & (uint16_t)0x01FFU);
if(hirda->Init.Parity == IRDA_PARITY_NONE)
{
pData +=2U;
}
else
{
pData +=1U;
}
}
else
{
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TXE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
hirda->Instance->DR = (*pData++ & (uint8_t)0xFFU);
}
}
if(IRDA_WaitOnFlagUntilTimeout(hirda, IRDA_FLAG_TC, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
/* At end of Tx process, restore hirda->gState to Ready */
hirda->gState = HAL_IRDA_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hirda);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receive an amount of data in blocking mode.
* @param hirda: Pointer to a IRDA_HandleTypeDef structure that contains
* the configuration information for the specified IRDA module.
* @param pData: Pointer to data buffer.
* @param Size: Amount of data to be received.
* @param Timeout: Specify timeout value.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IRDA_Receive(IRDA_HandleTypeDef *hirda, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp;
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;
}
}