MxChip_led_demo.ino

#include "RGB_LED.h"
RGB_LED rgbLed;
unsigned int rgbColour[3];
void setup() {
   rgbLed.setColor(0, 0, 255);  
}
void loop() {
  delay(1000);
  rgbLed.turnOff();
  delay(2000);
  int32_t countFrom = 10;
  for(int32_t iter = countFrom; iter >= 0; iter--) {
    // Start off with red.
    rgbColour[0] = 255;
    rgbColour[1] = 0;
    rgbColour[2] = 0;
    // Choose the colours to increment and decrement.
    for (int decColour = 0; decColour < 3; decColour += 1) {
        int incColour = decColour == 2 ? 0 : decColour + 1;
        // cross-fade the two colours.
        for(int i = 0; i < 255; i += 1) {
            rgbColour[decColour] -= 1;
            rgbColour[incColour] += 1;
            rgbLed.setColor(rgbColour[0], rgbColour[1], rgbColour[2]);
            delay(3);
        }
    }
  }
}