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pic 24F and period of Pwm [solved]

 
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joseph20480



Joined: 21 Dec 2011
Posts: 42

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pic 24F and period of Pwm [solved]
PostPosted: Sun Sep 09, 2012 8:41 am     Reply with quote
Hi,

I'm working on a motor control with a PWM brigh power. My Pic is 24Fj128g104, my ccs is 4.128.

I'm trying to set the period of my pwm signal but i encounter a problem : In spite of value, the period is always the same...

this is my fuses :
Code:

#include <24FJ64GA104.h>
#DEVICE *=16
#device adc=10
#fuses FRC_PLL,NOWDT
#FUSES ICSP2      
#FUSES NOIOL1WAY    //Allows multiple reconfigurations of peripheral pins
#FUSES OSCIO        //OSC2 is general purpose output
#FUSES SOSC_IO      //SOSC0/RA4
#FUSES NOPR         //Pimary oscillaotr disabled
#use delay(clock=32M,internal)


this is my code...
Code:
 setup_timer2(TMR_INTERNAL|TMR_DIV_BY_1,100);
   setup_compare(1,COMPARE_PWM_EDGE | COMPARE_TIMER2 );
   setup_compare(2,COMPARE_PWM_EDGE | COMPARE_TIMER2 );
   set_pwm_duty(1,1000);
   set_pwm_duty(2,1000);


Now i able to change the duty cycle with change value of "Set_pwm_duty", but anything for the period.

If anyone have an idea ???
thanks in advance
joseph20480



Joined: 21 Dec 2011
Posts: 42

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PostPosted: Sun Sep 09, 2012 9:52 am     Reply with quote
Hi,

It's seem to be solved !!

http://www.ccsinfo.com/forum/viewtopic.php?p=113418

setup_compare was wrong
... you must write this
Code:

setup_compare(1, COMPARE_PWM_EDGE | COMPARE_TIMER2 | COMPARE_TRIG_SYNC_TIMER2);

instead of
Quote:

setup_compare(1,COMPARE_PWM_EDGE | COMPARE_TIMER2 );
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