RGB LED

Here are two examples how you can use the RGB LED on the SODAQ SARA AFF.

Blink

This sketch will let the RGB LED blink in all three colors.

#include "Arduino.h"

void RED() {
  digitalWrite(LED_RED, LOW);
  digitalWrite(LED_GREEN, HIGH);
  digitalWrite(LED_BLUE, HIGH);
}

void GREEN() {
  digitalWrite(LED_RED, HIGH);
  digitalWrite(LED_GREEN, LOW);
  digitalWrite(LED_BLUE, HIGH);
}

void BLUE() {
  digitalWrite(LED_RED, HIGH);
  digitalWrite(LED_GREEN, HIGH);
  digitalWrite(LED_BLUE, LOW);
}

void setup() {
  pinMode(LED_RED, OUTPUT);
  pinMode(LED_GREEN, OUTPUT);
  pinMode(LED_BLUE, OUTPUT);
}

void loop() {
  RED();
  delay(1000);
  GREEN();
  delay(1000);
  BLUE();
  delay(1000);
}

Fading LED

This sketch will let the red LED fade.

int led = LED_RED; // the PWM pin the LED is attached to
// int led = LED_GREEN; // the PWM pin the LED is attached to
// int led = LED_BLUE; // the PWM pin the LED is attached to

int brightness = 0;    // how bright the LED is
int fadeAmount = 5;    // how many points to fade the LED by

// the setup routine runs once when you press reset:
void setup() {
  // declare pin 9 to be an output:
  pinMode(led, OUTPUT);
}

// the loop routine runs over and over again forever:
void loop() {
  // set the brightness of pin 9:
  analogWrite(led, brightness);

  // change the brightness for next time through the loop:
  brightness = brightness + fadeAmount;

  // reverse the direction of the fading at the ends of the fade:
  if (brightness == 0 || brightness == 255) {
    fadeAmount = -fadeAmount ;
  }
  // wait for 30 milliseconds to see the dimming effect
  delay(30);
}

Questions

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