DigistumpArduino/digistump-avr/libraries/DigisparkRGB/examples/DigisparkRGB/DigisparkRGB.ino

#include <DigisparkRGB.h>
/*
 Digispark RGB
 
 This example shows how to use soft PWM to fade 3 colors.
 Note: This is only necessary for PB2 (pin 2) - Blue, as Red (pin 0) and Green (pin 1) as well as pin 4 support the standard Arduino analogWrite() function.
 
 This example code is in the public domain.
 */
byte RED = 0;
byte BLUE = 2;
byte GREEN = 1;
byte COLORS[] = {RED, BLUE, GREEN};

// the setup routine runs once when you press reset:
void setup()  { 
  DigisparkRGBBegin();
} 


void loop ()
{
//direction: up = true, down = false
boolean dir = true;
int i = 0;

while(1)
{
fade(COLORS[i%3], dir);
i++;
dir = !dir;
}
}
void fade(byte Led, boolean dir)
{
int i;

//if fading up
if (dir)
{
for (i = 0; i < 256; i++) 
{
DigisparkRGB(Led, i);
DigisparkRGBDelay(25);//1);
}
}
else
{
for (i = 255; i >= 0; i--) 
{
DigisparkRGB(Led, i);
DigisparkRGBDelay(25);//1);
}
}
}