/*********************************************************************//**
* @brief Check if corresponding channel does have an active interrupt
* request or not
* @param[in] type type of status, should be:
* - GPDMA_STAT_INT: GPDMA Interrupt Status
* - GPDMA_STAT_INTTC: GPDMA Interrupt Terminal Count Request Status
* - GPDMA_STAT_INTERR: GPDMA Interrupt Error Status
* - GPDMA_STAT_RAWINTTC: GPDMA Raw Interrupt Terminal Count Status
* - GPDMA_STAT_RAWINTERR: GPDMA Raw Error Interrupt Status
* - GPDMA_STAT_ENABLED_CH:GPDMA Enabled Channel Status
* @param[in] channel GPDMA channel, should be in range from 0 to 7
* @return IntStatus status of DMA channel interrupt after masking
* Should be:
* - SET: the corresponding channel has no active interrupt request
* - RESET: the corresponding channel does have an active interrupt request
**********************************************************************/
IntStatus GPDMA_IntGetStatus(GPDMA_Status_Type type, uint8_t channel)
{
CHECK_PARAM(PARAM_GPDMA_STAT(type));
CHECK_PARAM(PARAM_GPDMA_CHANNEL(channel));
switch (type)
{
case GPDMA_STAT_INT: //check status of DMA channel interrupts
if (LPC_GPDMA->DMACIntStat & (GPDMA_DMACIntStat_Ch(channel)))
return SET;
return RESET;
case GPDMA_STAT_INTTC: // check terminal count interrupt request status for DMA
if (LPC_GPDMA->DMACIntTCStat & GPDMA_DMACIntTCStat_Ch(channel))
return SET;
return RESET;
case GPDMA_STAT_INTERR: //check interrupt status for DMA channels
if (LPC_GPDMA->DMACIntErrStat & GPDMA_DMACIntTCClear_Ch(channel))
return SET;
return RESET;
case GPDMA_STAT_RAWINTTC: //check status of the terminal count interrupt for DMA channels
if (LPC_GPDMA->DMACRawIntErrStat & GPDMA_DMACRawIntTCStat_Ch(channel))
return SET;
return RESET;
case GPDMA_STAT_RAWINTERR: //check status of the error interrupt for DMA channels
if (LPC_GPDMA->DMACRawIntTCStat & GPDMA_DMACRawIntErrStat_Ch(channel))
return SET;
return RESET;
default: //check enable status for DMA channels
if (LPC_GPDMA->DMACEnbldChns & GPDMA_DMACEnbldChns_Ch(channel))
return SET;
return RESET;
}
}
/*********************************************************************//**
* @brief Standard GPDMA interrupt handler, this function will check
* all interrupt status of GPDMA channels, then execute the call
* back function id they're already installed
* @param[in] None
* @return None
**********************************************************************/
void GPDMA_IntHandler(void)
{
uint32_t tmp;
// Scan interrupt pending
for (tmp = 0; tmp <= 7; tmp++) {
if (LPC_GPDMA->DMACIntStat & GPDMA_DMACIntStat_Ch(tmp)) {
// Check counter terminal status
if (LPC_GPDMA->DMACIntTCStat & GPDMA_DMACIntTCStat_Ch(tmp)) {
// Clear terminate counter Interrupt pending
LPC_GPDMA->DMACIntTCClear = GPDMA_DMACIntTCClear_Ch(tmp);
// Execute call-back function if it is already installed
if(_apfnGPDMACbs[tmp] != NULL) {
_apfnGPDMACbs[tmp](GPDMA_STAT_INTTC);
}
}
// Check error terminal status
if (LPC_GPDMA->DMACIntErrStat & GPDMA_DMACIntErrStat_Ch(tmp)) {
// Clear error counter Interrupt pending
LPC_GPDMA->DMACIntErrClr = GPDMA_DMACIntErrClr_Ch(tmp);
// Execute call-back function if it is already installed
if(_apfnGPDMACbs[tmp] != NULL) {
_apfnGPDMACbs[tmp](GPDMA_STAT_INTERR);
}
}
}
}
}
