pwm.c

pwm.c

//gcc pwm.c -lwiringPi -o pwm

#include <wiringPi.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>

int main (int argc, char *argv[]){
    if (argc != 4) {
        printf("Usage: %s <pin> <pwmClockDivisor> <pwmDutyCycle>\n", argv[0]);
        return 1;
    }

    int pin = atoi(argv[1]);
    int pwmClockDivisor = atoi(argv[2]);
    int pwmDutyCycle = atoi(argv[3]);

  printf ("Raspberry Pi wiringPi PWM test program\n") ;

  if (wiringPiSetup () == -1)
    exit (1) ;

  pinMode (pin, PWM_OUTPUT) ;
  pwmSetClock(pwmClockDivisor);
  pwmWrite (pin, pwmDutyCycle) ;

  return 0 ;
}