hexbright_demo_dazzle.ino

/*
  Hexbright demo firmware: Dazzle
  Andrew Magill  9/2012
  
  Dazzler flashes while the button is down.
*/

// Pin assignments
#define DPIN_RLED_SW            2
#define DPIN_GLED               5
#define DPIN_PWR                8
#define DPIN_DRV_MODE           9
#define DPIN_DRV_EN             10


void setup()
{
  // If we leave the regulator's enable pin as high-impedance,
  // the regulator will power down the board about a half 
  // second after release of the button.
  pinMode(DPIN_PWR,      INPUT);
  digitalWrite(DPIN_PWR, LOW);

  // Initialize GPIO
  pinMode(DPIN_RLED_SW,  INPUT);
  pinMode(DPIN_GLED,     OUTPUT);
  pinMode(DPIN_DRV_MODE, OUTPUT);
  pinMode(DPIN_DRV_EN,   OUTPUT);
  digitalWrite(DPIN_DRV_MODE, HIGH);
  digitalWrite(DPIN_DRV_EN,   LOW);
  digitalWrite(DPIN_GLED, HIGH);
}

void loop()
{
  static unsigned long lastTime;
  
  if (digitalRead(DPIN_RLED_SW))
  {
    if (millis() - lastTime > 10)
    {
      digitalWrite(DPIN_DRV_EN, random(4)<1);
      lastTime = millis();
    }
  }
  else
    digitalWrite(DPIN_DRV_EN, LOW);
}