how to change the channel ADC? F28069

hi i am new to this MCU, I try to learn about it.

I have a simple question, I'm using an example of controlSUITE:

"adc_tempsensorconv" and by default it only uses the channel A5.

I would like to know how to configure a new channel and how to select correctly, thank you.

#include "DSP28x_Project.h" // DSP28x Headerfile

#define CONV_WAIT 1L //Micro-seconds to wait for ADC conversion. Longer than necessary.
extern void DSP28x_usDelay(Uint32 Count);

int16 value_adc;
int16 adc_sample[1024];
float adc_vol[1024];

void main() {
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2806x_SysCtrl.c file.
InitSysCtrl();

// Step 2. Initalize GPIO:
// Enable XCLOCKOUT to allow monitoring of oscillator 1
EALLOW;
GpioCtrlRegs.GPAMUX2.bit.GPIO18 = 3; //enable XCLOCKOUT through GPIO mux
SysCtrlRegs.XCLK.bit.XCLKOUTDIV = 2; //XCLOCKOUT = SYSCLK

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

// Initialize 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 F2806x_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 F2806x_DefaultIsr.c.
// This function is found in F2806x_PieVect.c.
InitPieVectTable();

// Step 4. Initialize all the Device Peripherals:
// This function is found in F2806x_InitPeripherals.c
// InitPeripherals(); // Not required for this example

// Configure the ADC:
// Initialize the ADC
InitAdc();
AdcOffsetSelfCal();

EALLOW;
AdcRegs.ADCCTL2.bit.ADCNONOVERLAP = 1; //Enable non-overlap mode
// AdcRegs.ADCCTL1.bit.TEMPCONV = 1; //Connect channel A5 internally to the temperature sensor

AdcRegs.ADCSOC0CTL.bit.CHSEL = 5; //Set SOC0 channel select to ADCINA5
AdcRegs.ADCSOC0CTL.bit.ACQPS = 25; //Set SOC0 acquisition period to 26 ADCCLK
// delay sample de 577.78ns

AdcRegs.INTSEL1N2.bit.INT1SEL = 0; //Connect ADCINT1 to EOC0
AdcRegs.INTSEL1N2.bit.INT1E = 1; //Enable ADCINT1

// Set the flash OTP wait-states to minimum. This is important
// for the performance of the temperature conversion function.
FlashRegs.FOTPWAIT.bit.OTPWAIT = 1;
int ii = 0;
//Main program loop - continually sample temperature
while (1) {

for (ii = 0; ii < 1024; ii++) {

//Force start of conversion on SOC0
AdcRegs.ADCSOCFRC1.all = 0x01;

//Wait for end of conversion.
while (AdcRegs.ADCINTFLG.bit.ADCINT1 == 0) {
} //Wait for ADCINT1
AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; //Clear ADCINT1

//Get temp sensor sample result from SOC0
adc_sample[ii] = AdcResult.ADCRESULT0;
// DSP28x_usDelay(1000L);
}

for (ii = 0; ii < 1024; ii++)

adc_vol[ii]=adc_sample[ii]*3.3/4095;

asm("nop");

}
}