Hi,Sam,
SPI_PDD_WriteMasterPushTxFIFOReg(SPI0_BASE_PTR, (uint32_t)(*((uint16_t *)DeviceDataPrv->OutDataPtr) | DeviceDataPrv->TxCommand)); /* Put a character with command to the transmit register */
The above code is the code to write the pSPI_PUSHR register based on PE in ISR:
PE_ISR(SMasterLdd1_Interrupt)
{
/* {Default RTOS Adapter} ISR parameter is passed through the global variable */
SMasterLdd1_TDeviceDataPtr DeviceDataPrv = INT_SPI0__DEFAULT_RTOS_ISRPARAM;
uint32_t StatReg = SPI_PDD_GetInterruptFlags(SPI0_BASE_PTR); /* Read status register */
uint16_t Data; /* Temporary variable for data */
if ((StatReg & SPI_PDD_RX_FIFO_OVERFLOW_INT) != 0U) { /* Is any error flag set? */
SPI_PDD_ClearInterruptFlags(SPI0_BASE_PTR,SPI_PDD_RX_FIFO_OVERFLOW_INT); /* Clear error flags */
}
if ((StatReg & SPI_PDD_RX_FIFO_DRAIN_INT_DMA) != 0U) { /* Is any char in HW buffer? */
Data = (uint16_t)SPI_PDD_ReadPopRxFIFOReg(SPI0_BASE_PTR); /* Read character from receiver */
SPI_PDD_ClearInterruptFlags(SPI0_BASE_PTR,SPI_PDD_RX_FIFO_DRAIN_INT_DMA); /* Clear Rx FIFO drain flags */
if (DeviceDataPrv->InpDataNumReq != 0x00U) { /* Is the receive block operation pending? */
*((uint16_t *)DeviceDataPrv->InpDataPtr) = Data; /* Put a character to the receive buffer */
DeviceDataPrv->InpDataPtr += sizeof(uint16_t); /* Increment pointer to the receive buffer */
DeviceDataPrv->InpRecvDataNum++; /* Increment received char. counter */
if (DeviceDataPrv->InpRecvDataNum == DeviceDataPrv->InpDataNumReq) { /* Is the requested number of characters received? */
DeviceDataPrv->InpDataNumReq = 0x00U; /* If yes then clear number of requested characters to be received. */
SMasterLdd1_OnBlockReceived(DeviceDataPrv->UserData);
}
}
}
if ((StatReg & SPI_PDD_TX_FIFO_FILL_INT_DMA) != 0U) { /* Is HW buffer empty? */
if (DeviceDataPrv->OutSentDataNum < DeviceDataPrv->OutDataNumReq) { /* Is number of sent characters less than the number of requested incoming characters? */
DeviceDataPrv->OutSentDataNum++; /* Increment the counter of sent characters. */
SPI_PDD_WriteMasterPushTxFIFOReg(SPI0_BASE_PTR, (uint32_t)(*((uint16_t *)DeviceDataPrv->OutDataPtr) | DeviceDataPrv->TxCommand)); /* Put a character with command to the transmit register */
DeviceDataPrv->OutDataPtr += sizeof(uint16_t); /* Increment pointer to the transmitt buffer */
if (DeviceDataPrv->OutSentDataNum == DeviceDataPrv->OutDataNumReq) {
DeviceDataPrv->OutDataNumReq = 0x00U; /* Clear the counter of characters to be send by SendBlock() */
SMasterLdd1_OnBlockSent(DeviceDataPrv->UserData);
}
} else {
SPI_PDD_DisableDmasInterrupts(SPI0_BASE_PTR, SPI_PDD_TX_FIFO_FILL_INT_DMA); /* Disable TX interrupt */
}
SPI_PDD_ClearInterruptFlags(SPI0_BASE_PTR,SPI_PDD_TX_FIFO_FILL_INT_DMA); /* Clear Tx FIFO fill flags */
}
}
