PIC16F877A ADC on Starter Borad Revision as of 18:53, 2 May 2016 by Explorer (Talk | contribs) (diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

In this tutorial we will see how to read the ADC values on PIC16f877A starter board.
Starter board comes with on board POT connected to ADC0, same POT value will be read and transmitted on UART at 9600 baudrate.

PIC16F877A ADC pins

PIC16F877A has inbuilt 8channel 10-bit ADC. Below tables shows the ADC pin mapping.

Adc Channel	Pic16f877a Pin
0	PA.0
1	PA.1
2	PA.2
3	PA.3
4	PA.5
2	PE.0
3	PE.1
4	PE.2

Code

	#include "adc.h"
	#include "uart.h"
	int main()
	{
	int adcValue;
	ADC_Init(); /* Initialize the ADC module */
	UART_Init(9600); /* Initialize UART at 9600 baud rate */
	while(1)
	{
	adcValue = ADC_GetAdcValue(0); // Read the ADC value of channel zero
	UART_Printf("ADC0 Value:%4d \n\r",adcValue); // Send the value on UART
	}
	return (0);
	}

view raw pic16f877a_ADC.c hosted with ❤ by GitHub

Demo