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pwm on 16F877A, how to change the duty cycle

 
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PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Sun Mar 12, 2006 1:26 am     Reply with quote
One way to simplify it is to just cut out the options and the RS-232 stuff:
Code:

#include <16F877.h>
#device adc=8
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=10000000)

void main()
{
int8 value;
   
setup_ccp1(CCP_PWM);

setup_timer_2(T2_DIV_BY_4, 127, 1);

setup_port_a(ALL_ANALOG);
setup_adc(ADC_CLOCK_INTERNAL);
set_adc_channel(0);

while(1)
  {
   value = read_adc();

   set_pwm1_duty(value);
  }

}
hongtao



Joined: 09 Mar 2006
Posts: 4
Location: Shanghai China

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PostPosted: Wed Mar 15, 2006 5:26 am     Reply with quote
Hi

PCM programmer, thanks. It works. I can use it in my program.I find so

many post about PWM, after finishing my graduation project, I will write a

post to make a summary or a index, may be it will be easy to check.

谢谢！！
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