problem with ADC in PIC18LF4620

mbyes · Joined: 14 Aug 2006 Posts: 4

Hi friends.
Below source is me coding.
At every read_adc(), value incorrect.

This source is definitely correct?

Thank you.

#include <18F4620.h>
#device adc=10
#fuses H4, NOWDT, NOPROTECT, NOBROWNOUT, PUT, NOLVP
#use delay(clock=40000000)

void main()
{
int16 value;

set_tris_A(0x03);

setup_adc_ports(AN0_TO_AN1 | VSS_VDD);
setup_adc(ADC_CLOCK_DIV_64 | ADC_TAD_MUL_4);

output_bit(pin_a2,1);
output_bit(pin_a3,1);
output_bit(pin_a5,1);

while(1){
set_adc_channel(4);
delay_us(10);
value = read_adc();
delay_us(10);
}
}

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

vi_ni_ta · Joined: 11 Dec 2006 Posts: 7

why do people use int16 and int32 for ADC conversion instead of just int.
my adc part is compiling but the function is not done when i simulate it because i use just int.
if i use int16 i am unable to print it.
kindly help me ASAP pls

davekelly · Joined: 04 Oct 2006 Posts: 53 Location: Berkshire, England

vi_ni_ta · Joined: 11 Dec 2006 Posts: 7

Thanks dave. I figured tat out rightaway as soon as i posted my query. but there still is one big bug. i've coded it right. my complier says no error. but when i simulate it my ADC conversion does not do a good job. will pass on the code and hopefully in a short while post a solution too..