In this tutorial we will learn how to working ADC in PIC16F877A. PIC16F77A  Microcontroller has 8 channel ADC module. I am use this project analog channel 0.
you can watch the video or read the written tutorial below. 

 

ADC module receive analog voltage. The analog voltage can be (0-5)V. ADC module it convert 10 bit digital value corresponding  analog signal. PIC ADC module has software selectable high and low voltage reference input and some combination of VDD , VSS , RA2 & RA3.

 

Mikro C Pro For Pic provide a ADC library with comfortable working with the ADC module.

 

Circuit Diagram

 

 

Project code

unsigned int adc_result;
void main() {
     ADCON1 = 0X80;
     TRISA0_bit = 1;                                   // RA0 is analog input
     Adc_Init();                                             // Adc module initialize
     TRISB = 0X00;                                      // PORTB is output
     PORTB = 0X00;                                   // clear PORTB
     while(1){
              adc_result = adc_read(0) ;         // adc read channel 0
              PORTB = adc_result;                
              delay_ms(100);
              }

}

 

 

Download free source code

 

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