[PIC] DsPIC33EP PWM not functioning properly

[Konric]

Hi I am testing the functionality of the dsPIC33EP and ran some example code from the Family Reference Manual for the PWM module.
Here's the code:

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void PWMInit (void);
 
#include "xc.h"
#include "p33EP512MU814.h"
 
 
int main(void) {
    
    PWMInit (); 
    while (1);
    return 0;
}
 
void PWMInit (void)
{
/* Set PWM Periods on PHASEx Registers */
PHASE1 = 800;
PHASE2 = 900;
PHASE3 = 1000;
/* Set Duty Cycles */
PDC1 = 200;
PDC2 = 300;
PDC3 = 400;
/* Set Dead Time Values */
DTR1 = DTR2 = DTR3 = 0;
ALTDTR1 = ALTDTR2 = ALTDTR3 = 0;
/* Set PWM Mode to Redundant */
IOCON1 = IOCON2 = IOCON3 = 0xC400;
/* Set Independent Time Bases, Edge-Aligned Mode and Independent Duty Cycles */
PWMCON1 = PWMCON2 = PWMCON3 = 0x0200;
/* Configure Faults */
FCLCON1 = FCLCON2 = FCLCON3 = 0x0003;
/* 1:1 Prescaler */
PTCON2 = 0x0000;
/*Disable Chop*/
CHOP = 0;
/* Enable PWM Module */
PTCON = 0x8000;
}

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And here is the Mplab logic analyzer



I have the chop function disabled but I am still getting a weird output for the duty cycle, it's not solid but keeps toggling furthermore it's not consistant sometimes on PWM1 the output toggle is very uniform in respect to the time on and off but then it starts to do two quick toggles followed by a longer off time.
Then there's the problem with PWM2 it toggles 5 times for a period of time and switches to 6 toggles.

Then if I increase the duty cycle to 90% I get the following output:



Does anyone know what is going on?
I am doing everything in simulation mode, is there some kind of setting that I am missing?

Thanks