Greets!
I am trying to accomplish the following:
- Arduino counts sequential button pushes
(Second push needs to happen inside a time interval of 1000ms or less after the first push to get counted) - Turns LED on immediately after the first push, and holds it on for the the time that equals the number of sequential pushes multiplied by 1000ms
- Ideally, any push that happens during the time LED is on, should get added to the count
- Turns LED off, clears push count
I have tried messing with the StateChangeDetection example:
This example code is in the public domain.
http://arduino.cc/en/Tutorial/ButtonStateChange
*/
// this constant won't change:
const int buttonPin = 2; // the pin that the pushbutton is attached to
const int ledPin = 13; // the pin that the LED is attached to
// Variables will change:
int buttonPushCounter = 0; // counter for the number of button presses
int buttonState = 0; // current state of the button
int lastButtonState = 0; // previous state of the button
void setup() {
// initialize the button pin as a input:
pinMode(buttonPin, INPUT);
// initialize the LED as an output:
pinMode(ledPin, OUTPUT);
// initialize serial communication:
Serial.begin(9600);
}
void loop() {
// read the pushbutton input pin:
buttonState = digitalRead(buttonPin);
// compare the buttonState to its previous state
if (buttonState != lastButtonState) {
// if the state has changed, increment the counter
if (buttonState == HIGH) {
// if the current state is HIGH then the button
// wend from off to on:
buttonPushCounter++;
Serial.println("on");
Serial.print("number of button pushes: ");
Serial.println(buttonPushCounter);
}
else {
// if the current state is LOW then the button
// wend from on to off:
Serial.println("off");
}
// Delay a little bit to avoid bouncing
delay(50);
}
// save the current state as the last state,
//for next time through the loop
lastButtonState = buttonState;
// turns on the LED every four button pushes by
// checking the modulo of the button push counter.
// the modulo function gives you the remainder of
// the division of two numbers:
/* if (buttonPushCounter % 4 == 0) {
digitalWrite(ledPin, HIGH);*/
if (buttonState == HIGH) {
// turn LED on:
digitalWrite(ledPin, HIGH);
delay(1000 * buttonPushCounter);
//buttonPushCounter = 0;
} else {
digitalWrite(ledPin, LOW);
}
}
I added the delay multiplied by buttonPushCounter, it does work but it doesn't reset the counter at the end of the function, adding the pushButtonCounter = 0 didn't help much, it resets the counter after every push.
Since I am not a programmer I don't know better, but I do know that this is the wrong way to tackle this problem.
There should be a simple solution here (for someone who knows what he is doing), any help would be appreciated! Thanks!