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nguyentanloc27
Joined: 25 Sep 2013
Posts: 1
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| PWM on pic 24fj256ga106 |
 Posted: Wed Sep 25, 2013 2:54 am |
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I' ve tried using pwm on device pic 24fj256ga106. I've tried the #use PWM and also setup_compare(). However, the simulation proteus doesn't display the pwm. Here are my code:
| Code: |
#include "24FJ256GA106.h"
#use delay(CLOCK=8000000)
#pin_select OC2 = PIN_B6
#pin_select OC1 = PIN_B1
void main(void) {
setup_timer2(TMR_INTERNAL|TMR_DIV_BY_1,1000);
setup_compare(1,COMPARE_PWM_EDGE | COMPARE_TIMER2 | COMPARE_TRIG_SYNC_TIMER2);
setup_compare(2,COMPARE_PWM_EDGE | COMPARE_TIMER2 | COMPARE_TRIG_SYNC_TIMER2 );
set_pwm_duty(1,200);
set_pwm_duty(2,200);
while(1);
}
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And this is the #use PWM():
| Code: |
#include "24FJ256GA106.h" // Modify for your chip
#use delay(crystal=20000000) // Modify for your clock and freq
#use PWM(OUTPUT=PIN_B1,FREQUENCY=10Khz,DUTY=25)
void main(void) {
PWM_ON();
setup_timer2(TMR_INTERNAL |TMR_DIV_BY_8 ,20000);
set_pwm_duty(1,855);
while(1);
} |
can anyone help me? I'm stuck now. I have to control 18 rc servo in a spider robot. This chip provide 9 pwm with a high resolution, so I chose it. This just the sample code to simulate in proteus, to see if i can controll any servo. Please help me!  |
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oxo
Joined: 13 Nov 2012
Posts: 219
Location: France
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Ttelmah
Joined: 11 Mar 2010
Posts: 19369
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| Posted: Wed Sep 25, 2013 8:30 am |
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As a comment though, I'm not sure using the same timer to generate the PWM, and as the sync source is legitimate. Since PWM, is already generated from the timer, just use the timer, don't try to sync to it as well.
Best Wishes |
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