Generating PWM with PIC32MX460F512L

[Oteggewo Osojoh Ebot Sidney Smith]

I am working on a project to generate PWM signal with PIC32MX460F512L to drive a motor. I have written the code to drive a motor with a signal of frequency 10KHz. I have tried to test my code but it is not work. I would appreciate of someone can advice me one how to proceed.

 

#include <plib.h>

#include <stdio.h>

#include <stdint.h>

#include "Cerebot.h"

#include "Lcd.h"

#include "config.h"

 

void initTimer();

void initOC();

 

 

int main(void)

{

Init_Cerebot32MX(); 

initTimer();

initOC();

 

_CP0_SET_COUNT(0); // Delay 4 Seconds

while(_CP0_GET_COUNT()< 4*40000000)

{

;

}

 

OC1RS = 500; // Set Duty Cycle to 50%

TRISG = 0x0000; // Set PORTG as output

 

while(1)

{

PORTGbits.RG12 = 0; // Set pin RG12 as output

 

}

 

} //end main

 

void initTimer()

{

T2CONbits.TCKPS = 1; // Timer 2 Prescaler of 1:8

PR2 = 999; // Period = (PR2+1)*N*12.5ns = 100us

TMR2 = 0; // Initial TMR2 count is 0

T2CONbits.ON = 1; // Turn on Timer 2

}

 

void initOC()

{

OC1CONbits.OCM = 0b110; // PWM Mode without fault pin

OC1RS = 250; // Duty Cycle = OC1RS/(PR2+1) = 25%

OC1R = 250; // Initialize before turning OC1 on

OC1CONbits.ON = 1; // Turn on OC1

}

[Hari Prasaath K]

Hi,

Mention about the error you faced with your code, and how do u tested that.

[Author]

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