| /* |
| 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); |
| } |
| } |