.:: HI-TECH C Compiler ADC Example ::.
A library for HI-TECH C compiler for reading from ADC ports
Library for HI-TECH C Compiler for analog to digital (ADC) readings
1: static volatile unsigned char ADRES @ 0x1E;
2: static volatile unsigned char ADCON0 @ 0x1F;
3: static bank1 unsigned char ADCON1 @ 0x9F;
4: static volatile unsigned char ADCON2 @ 0x9B;
5:
6: void ADCInit() { ADCON2=0b10001010; }
7:
8: unsigned int ADCRead(unsigned char ch)
9: {
10: if(ch>13) return 0; //Invalid Channel
11: ADCON0=0x00;
12: ADCON0=(ch<<2); //Select ADC Channel
13: ADON=1; //switch on the adc module
14: ADCON0bits.GO_DONE=1; //Start conversion
15: while(ADCON0bits.GO_DONE); //wait for the conversion to finish
16: ADON=0; //switch off adc
17: return ADRES;
18: }