Subversion Repositories Code-Repo

#include "maindefs.h"

#include "pwm.h"

#include <pwm.h>

void pwm_init() {

    // Configure pins RC5 and RC7 as outputs

    TRISCbits.TRISC0 = 0;

    TRISCbits.TRISC1 = 0;

    LATCbits.LATC0 = 0;

    LATCbits.LATC1 = 0;

    RPOR11 = 14;    // Set RP11 to ECCP1 PWM Output Channel A

    RPOR12 = 15;    // Set RP12 to ECCP1 PWM Output Channel B

}

void pwm_start() {

    OpenEPWM1(0xFF, ECCP_1_SEL_TMR12);  // 38kHz Frequency

    SetDCEPWM1(512);                    // 50% Duty Cycle

    // Wait for completion of a full PWM cycle before enabling output mode

    while(!PIR1bits.TMR2IF);

    SetOutputEPWM1(SINGLE_OUT, PWM_MODE_1);

    // Enable ECCP1 output channels A and B

    PSTR1CONbits.STRA = 1;

    PSTR1CONbits.STRB = 1;

}

void pwm_stop() {

    CloseEPWM1();

}