1
0
mirror of https://github.com/arduino/Arduino.git synced 2024-12-11 22:24:13 +01:00
Arduino/build/shared/examples/3.Analog/AnalogWriteMega/AnalogWriteMega.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

46 lines
1.2 KiB
C++

/*
Mega analogWrite() test
This sketch fades LEDs up and down one at a time on digital pins 2 through 13.
This sketch was written for the Arduino Mega, and will not work on previous boards.
The circuit:
* LEDs attached from pins 2 through 13 to ground.
created 8 Feb 2009
by Tom Igoe
This example code is in the public domain.
*/
// These constants won't change. They're used to give names
// to the pins used:
const int lowestPin = 2;
const int highestPin = 13;
void setup() {
// set pins 2 through 13 as outputs:
for (int thisPin =lowestPin; thisPin <= highestPin; thisPin++) {
pinMode(thisPin, OUTPUT);
}
}
void loop() {
// iterate over the pins:
for (int thisPin =lowestPin; thisPin <= highestPin; thisPin++) {
// fade the LED on thisPin from off to brightest:
for (int brightness = 0; brightness < 255; brightness++) {
analogWrite(thisPin, brightness);
delay(2);
}
// fade the LED on thisPin from brithstest to off:
for (int brightness = 255; brightness >= 0; brightness--) {
analogWrite(thisPin, brightness);
delay(2);
}
// pause between LEDs:
delay(100);
}
}