F280049C ADC触发DMA的问题

Hello, Susan

貌似这个例子也是enable了ADC中断的。

下面是我在程序中的配置， 我发现只要我关闭了ACDA的中断，不管在哪，

都无法触发DMA了。

EALLOW;
PieCtrlRegs.PIECTRL.bit.ENPIE = 1;     // Enable the PIE block
PieCtrlRegs.PIEIER7.bit.INTx1 = 1;       // Enable DMA_CH1 interrupt
//PieCtrlRegs.PIEIER1.bit.INTx1 = 1;     // Enable ADCA1 interrupt
EDIS;

IER |= M_INT1 | M_INT7;
EINT;
ERTM;

void ConfigureADC(void)
{
// ADC
SetVREF(ADC_ADCA, ADC_EXTERNAL, ADC_VREF2P5);
EALLOW;
AdcaRegs.ADCCTL2.bit.PRESCALE = 6;       // divided by four
AdcaRegs.ADCCTL1.bit.INTPULSEPOS = 1; // EOC interrupt pulse
AdcaRegs.ADCCTL1.bit.ADCPWDNZ = 1;     // Powered up
DELAY_US(1000); // Wait for initialization

AdcaRegs.ADCSOC0CTL.bit.CHSEL = 2;       // SOC0 will convert pin A2
AdcaRegs.ADCSOC0CTL.bit.ACQPS = 19;     // sample window is 20 SYSCLK cycles
AdcaRegs.ADCSOC0CTL.bit.TRIGSEL = 9;    // trigger on ePWM3 SOCA
AdcaRegs.ADCINTSEL1N2.bit.INT1SEL = 0;  // EOC0 will set INT1 flag
AdcaRegs.ADCINTSEL1N2.bit.INT1E = 1;       // enable INT1 flag
AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; // make sure INT1 flag is cleared
EDIS;

}

void DMAInit(void)
{

// Initialize DMA
DMAInitialize();

// DMA set up for ADC

DMACH1AddrConfig(adc_buff, &AdcaResultRegs.ADCRESULT0);

// Enable the DMA channel 1 interrupt
DMACH1TransferConfig(3, 0, 1); // 1 T

// Set up MODE Register:
DMACH1ModeConfig(
DMA_ADCAINT1, 
PERINT_ENABLE,             // Peripheral interrupt enable
ONESHOT_DISABLE,        // One burst transfer per trigger
CONT_ENABLE,                // Channel re-initializes when TRANSFER_COUNT is zero and waits for the next event trigger
SYNC_DISABLE,
SYNC_SRC,
OVRFLOW_DISABLE,       // Disable the overflow interrupt
SIXTEEN_BIT,                    // Data size in transfer
CHINT_END,                      // Generate interrupt to CPU at end of transfer
CHINT_ENABLE                // Enables the DMA channel's CPU interrupt.
);