microchip - dsPIC33EV256GM002 PWM settings -

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i developed simple program produce pwm waveform on dspic33ev256gm002 can't disable it. used pwm1 , pwm2 , generate pwm waveform on pwm1l1 pin (pin 26 on dip package) maintain pwm1h1 (pin 25 on dip package) digital i/o. teorically pwm register setting: iocon1bits.penl = 1; /* pwm1l controlled pwm module / iocon1bits.penh = 0; / pwm1h controlled gpio module */ should but, using , oscilloscope, noticed pwm waveform on pwm1h1 pin, opposite value (when pwm1l 1 pwm1h 0 , veceversa) if should digital i/o.

did find similar problem ?

thank , cooperation

regards

i used following code:

trisbbits.trisb10 = 0;                  /* set digital output */ trisbbits.trisb11 = 0;                  /* set digital output */ trisbbits.trisb12 = 0;                  /* set digital output */ trisbbits.trisb13 = 0;                  /* set digital output */ trisbbits.trisb14 = 0;                  /* set digital output */ trisbbits.trisb15 = 0;                  /* set digital output */  latbbits.latb10 = 0;                /* set digital output */ latbbits.latb11 = 0;                /* set digital output */ latbbits.latb12 = 0;                /* set digital output */ latbbits.latb13 = 0;                /* set digital output */ latbbits.latb14 = 0;                /* set digital output */ latbbits.latb15 = 0;                /* set digital output */    portbbits.rb10=0;   portbbits.rb11=0;   portbbits.rb12=0;   portbbits.rb13=0;   portbbits.rb14=0;   portbbits.rb15=0;    ptper = 4000;  /*~~~~~~~~~~ pwm1 configuration ~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/     iocon1bits.penl      = 1;   /* pwm1l controlled pwm module */  iocon1bits.penh      = 0;   /* pwm1h controlled gpio module */ iocon1bits.pmod      = 0;   /* select independent output pwm mode */ pdc1 = 500;                 /* initial duty cycle */  dtr1    = 0;                /* deadtime setting */ altdtr1 = 0;                /* deadtime setting */ phase1 = 0;                 /* no phase shift */  /*~~~~~~~~~~~ pwm2 configuration ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ iocon2bits.penh      = 1;  /* pwm2h controlled pwm module */ iocon2bits.penl      = 0;  /* pwm2l controlled gpio module */ iocon2bits.pmod      = 0;  /* select independent output pwm mode */ pdc2 = 2000;               /* initial duty cycle */  dtr2    = 0;               /* deadtime setting */ altdtr2 = 0;               /* deadtime setting */ phase2 = 0;                /* */  ptconbits.pten       = 1; /* enable pwm module */

i faced same problem dspic33ev32gp002 , did change in configuration bits as:

// fdevopt #pragma config pwmlock = off

this worked me


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