| /* | |
| 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 other 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. | |
| https://www.arduino.cc/en/Tutorial/BuiltInExamples/AnalogWriteMega | |
| */ | |
| // 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 brightest to off: | |
| for (int brightness = 255; brightness >= 0; brightness--) { | |
| analogWrite(thisPin, brightness); | |
| delay(2); | |
| } | |
| // pause between LEDs: | |
| delay(100); | |
| } | |
| } | |