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int pwm_a = 9;
int pwm_b = 10;
int pwm_c = 11;
int i;
void setup()
{
pinMode(pwm_a, OUTPUT);
pinMode(pwm_b, OUTPUT);
pinMode(pwm_c, OUTPUT);
Serial.begin(9600);
}
void loop()
{
//
//fade all channels up and down.
//
Serial.println("Fading all pwm channels up to max.");
for (i=0; i<=255; i++)
{
analogWrite(pwm_a, i);
analogWrite(pwm_b, i);
analogWrite(pwm_c, i);
delay(100);
}
Serial.println("All pwm channels at max.");
delay(1000);
Serial.println("Fading all channels to 0");
for (i=255; i>=0; i--)
{
analogWrite(pwm_a, i);
analogWrite(pwm_b, i);
analogWrite(pwm_c, i);
delay(100);
}
Serial.println("All pwm channels at zero.");
delay(1000);
fade_channel(pwm_a);
fade_channel(pwm_b);
fade_channel(pwm_c);
}
void fade_channel(int channel)
{
Serial.println("Fading pwm channel to max: ");
Serial.println(channel);
for (i=0; i<=255; i++)
{
analogWrite(pwm_a, i);
delay(100);
}
Serial.println("pwm channel at max.");
delay(1000);
Serial.println("fading down.");
for (i=255; i>=0; i--)
{
analogWrite(pwm_a, i);
delay(100);
}
Serial.println("pwm channel at 0.");
delay(1000);
}
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