Quick-and-dirty SoftPWM Blink for a Meb Project

wd_blink.ino

#include <SoftPWM.h>
#include <Thread.h>

/* DEFINES -------------------------------------------------------------------*/

#define LED_COUNT 8
#define MAX_BRIGHTNESS 75 // 100 to 255
#define FADEUP_TIME_MS 50
#define FADEDN_TIME_MS 2900
#define MAXDELAY_MS 300
#define MINDELAY_MS 100

/* PROTOS -------------------------------------------------------------------*/
void fade(void);

/* LED CLASS ----------------------------------------------------------------*/

class led {

  public: 
    int pin; 
    Thread thread;

    void fire(void);

  private: 

};

void led::fire() {
  SoftPWMSet(pin, MAX_BRIGHTNESS);
  thread.onRun(fade);
  thread.setInterval(FADEUP_TIME_MS);
}

/* GLOBALS -------------------------------------------------------------------*/

led leds[LED_COUNT];
Thread mainThread = Thread();

void fade() {
  for (int i = 0; i < LED_COUNT; i++) {
    SoftPWMSet(leds[i].pin, 0);
  }
}

void scheduleNext() {
  // pick a random LED and fire it
  int idx = random(LED_COUNT);
  leds[idx].fire();
  
  // reschedule thread to fire next LED
  mainThread.onRun(scheduleNext);
  mainThread.setInterval(random(MINDELAY_MS, MAXDELAY_MS));
}
  
/* LET'S GO ------------------------------------------------------------------*/

void setup()
{
   // clockwise from power connector
  leds[0].pin = 1;
  leds[1].pin = 0;
  leds[2].pin = 2;
  leds[3].pin = 3;
  leds[4].pin = 10;
  leds[5].pin = 9;
  leds[6].pin = 6;
  leds[7].pin = 12;

  SoftPWMBegin();

  for (int i = 0; i < LED_COUNT; i++) {
    SoftPWMSet(leds[i].pin, 0);
    leds[i].thread = Thread();
    SoftPWMSetFadeTime(leds[i].pin, FADEUP_TIME_MS, FADEDN_TIME_MS);
  }

  scheduleNext();
}

void loop()
{
  // handle all the LED threads
  for (int i = 0; i < LED_COUNT; i++) {
    if(leds[i].thread.shouldRun()) {
      leds[i].thread.run();
    }
  }

  // handle the main thread
  if (mainThread.shouldRun()) {
    mainThread.run();
  }
}