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Arduino/build/shared/examples/1.Basics/Fade/Fade.ino
Tom Igoe 35777612c0 Changed all .pde examples to .ino
All examples in /build/shared/examples/ and /libraries/ have had their
extensions changed to .ino
2011-08-30 15:33:32 -04:00

32 lines
777 B
C++

/*
Fade
This example shows how to fade an LED on pin 9
using the analogWrite() function.
This example code is in the public domain.
*/
int brightness = 0; // how bright the LED is
int fadeAmount = 5; // how many points to fade the LED by
void setup() {
// declare pin 9 to be an output:
pinMode(9, OUTPUT);
}
void loop() {
// set the brightness of pin 9:
analogWrite(9, 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);
}