/*
   pulse.c

   gcc -o pulse pulse.c -lpigpio -lrt -lpthread

   sudo ./pulse
*/

#include <stdio.h>
#include <pigpio.h>

void blinkRed();
void blinkGreen();
void blinkBlue();
void initZero();
int main(int argc, char *argv[]){

   if (gpioInitialise() < 0){
      fprintf(stderr, "pigpio initialisation failedn");
      return 1;
   }

   /* Set GPIO modes */
   gpioSetMode(4,  PI_OUTPUT); //blue
   gpioSetMode(17, PI_OUTPUT); //green
   gpioSetMode(27, PI_OUTPUT); //red

   /*init io to zero*/
   initZero();
   int i;
   for(i = 0; i < 60; i++){
   blinkRed();

   }

   /* Stop DMA, release resources */
   initZero();
   gpioTerminate();

   return 0;
}
void initZero(){
      gpioWrite(4,  1); /* off */
      gpioWrite(17, 1); /* off */
      gpioWrite(27, 1); /* off */
    }

void blinkBlue(){
      gpioWrite(4, 1); /* off */
      time_sleep(0.5);
      gpioWrite(4, 0); /* on */
      time_sleep(0.5);
    }

void blinkGreen(){
      gpioWrite(17, 1); /* off */
      time_sleep(0.5);
      gpioWrite(17, 0); /* on */
      time_sleep(0.5);
    }

void blinkRed(){
      gpioWrite(27, 1); /* off */
      time_sleep(0.5);
      gpioWrite(27, 0); /* on */
      time_sleep(0.5);
    }