mirror of https://github.com/noisymime/Arduino.git
43 lines
1.1 KiB
Plaintext
43 lines
1.1 KiB
Plaintext
|
/*
|
||
|
|
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
|
||
|
|
*/
|
||
|
|
// 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);
|
||
|
|
}
|
||
|
|
}
|