int lastState = 0; // last state of the switch
int currentState = 0; // current state of the switch
int ledLevel = 0; // level of the LED analogWrite
long lastFadeTime = 0; // last time you decremented the LED level
void setup() {
pinMode (2, INPUT); // the switch pin
pinMode(6, OUTPUT); // the LED pin
Serial.begin(9600); // initialize serial communication
}
void loop() {
// read the switch:
currentState = digitalRead(2);
// if the switch has changed, do something:
if (currentState != lastState) {
// if the switch is high:
if (currentState == 1) {
// set the LED level
ledLevel = 255;
Serial.println("turned on");
}
// save the current state of the switch as the last state for next time through:
lastState = currentState;
}
if (millis() - lastFadeTime > 5) {
// fade the LED level:
if (ledLevel >0 ) {
// turn on or off the LED
analogWrite(6, ledLevel);
// decrement the LED level:
ledLevel--;
}
else {
// turn the LED off:
digitalWrite(6, LOW);
}
// note the last time you faded the LED:
lastFadeTime = millis();
}
}
-------by Hardik Pandya
Tuesday, March 9, 2010
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