#define POT 5 // 10k potentiometer on AN5 input
#define AINPUTS 0xffdf // Analog inputs for POT
// initilaize the ADC for single conversion, select input pins
void initADC( int amask)
{
AD1PCFG = amask; // select analog input pins
AD1CON1 = 0x00E0; // auto convert after end of sampling
AD1CSSL = 0; // no scanning required
AD1CON2 = 0; // use MUXA, AVss/AVdd used as Vref+/-
AD1CON3 = 0x1F3F; // max sample thime = 31Tad
AD1CON1SET = 0x8000; // turn on the ADC
} //initADC
int readADC( int ch)
{
AD1CHSbits.CH0SA = ch; // select analog input channel
AD1CON1bits.SAMP = 1; // start sampling
while (!AD1CON1bits.DONE); // wait to complete conversion
return ADC1BUF0; // read the conversion result
} // readADC
main()
{
DDPCONbits.JTAGEN=0;
TRISB=0x0020;
initADC( AINPUTS);
int a;
a=readADC( POT);
TRISE=0x0000; //PORTE pins are output,and connected to