TMS320F28379D: ADC例程的引脚配置问题

您好！

在目录C2000Ware_3_04_00_00\device_support\f2837xd\examples\cpu1\adc_soc_epwm\cpu01的代码中：似乎没有对特定的GPIO口复用为ADC的引脚？？？

void main(void)
{
//
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2837xD_SysCtrl.c file.
//
    InitSysCtrl();

//
// Step 2. Initialize GPIO:
// This example function is found in the F2837xD_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
//
    InitGpio(); // Skipped for this example

//
// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
//
    DINT;

//
// Initialize the PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the F2837xD_PieCtrl.c file.
//
    InitPieCtrl();

//
// Disable CPU interrupts and clear all CPU interrupt flags:
//
    IER = 0x0000;
    IFR = 0x0000;

//
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example.  This is useful for debug purposes.
// The shell ISR routines are found in F2837xD_DefaultIsr.c.
// This function is found in F2837xD_PieVect.c.
//
    InitPieVectTable();

//
// Map ISR functions
//
    EALLOW;
    PieVectTable.ADCA1_INT = &adca1_isr; //function for ADCA interrupt 1
    EDIS;

//
// Configure the ADC and power it up
//
    ConfigureADC();

//
// Configure the ePWM
//
    ConfigureEPWM();

//
// Setup the ADC for ePWM triggered conversions on channel 0
//
    SetupADCEpwm(0);

//
// Enable global Interrupts and higher priority real-time debug events:
//
    IER |= M_INT1; //Enable group 1 interrupts
    EINT;  // Enable Global interrupt INTM
    ERTM;  // Enable Global realtime interrupt DBGM

//
// Initialize results buffer
//
    for(resultsIndex = 0; resultsIndex < RESULTS_BUFFER_SIZE; resultsIndex++)
    {
        AdcaResults[resultsIndex] = 0;
    }
    resultsIndex = 0;
    bufferFull = 0;

//
// enable PIE interrupt
//
    PieCtrlRegs.PIEIER1.bit.INTx1 = 1;

//
// sync ePWM
//
    EALLOW;
    CpuSysRegs.PCLKCR0.bit.TBCLKSYNC = 1;

//
//take conversions indefinitely in loop
//
    do
    {
        //
        //start ePWM
        //
        EPwm1Regs.ETSEL.bit.SOCAEN = 1;  //enable SOCA
        EPwm1Regs.TBCTL.bit.CTRMODE = 0; //unfreeze, and enter up count mode

        //
        //wait while ePWM causes ADC conversions, which then cause interrupts,
        //which fill the results buffer, eventually setting the bufferFull
        //flag
        //
        while(!bufferFull);
        bufferFull = 0; //clear the buffer full flag

        //
        //stop ePWM
        //
        EPwm1Regs.ETSEL.bit.SOCAEN = 0;  //disable SOCA
        EPwm1Regs.TBCTL.bit.CTRMODE = 3; //freeze counter

        //
        //at this point, AdcaResults[] contains a sequence of conversions
        //from the selected channel
        //

        //
        //software breakpoint, hit run again to get updated conversions
        //
        asm("   ESTOP0");
    }while(1);
}

非常感谢！