/*
SN095 Code Modified by Paul Bradt
Modification combines the Button with Blink code
Description of Blink turns LED on and off with 1 sec interval
Description of Button Code below:
Button Code Turns on and off the on-Board light emitting diode (LED) connected to digital pin 13,
when pressing a pushbutton attached to pin 2.
The circuit:
- If using a separate LED needs to be attached from pin 13 to ground through 220 ohm resistor
- pushbutton attached to pin 2 from +5V
- Using PULLUP INPUT on Pin 2 so do not need resistor for pushbutton
- Note: on most Arduinos there is already an LED on the board
attached to pin 13.
Button code created 2005
Original button code by DojoDave <http://www.0j0.org>
modified 30 Aug 2011
by Tom Igoe
This example button code is in the public domain.
https://www.arduino.cc/en/Tutorial/BuiltInExamples/Button
*/
// constants won’t change. They’re used here to set pin numbers:
const int buttonPin = 2; // the number of the pushbutton pin
const int ledPin = 13; // the number of the LED pin, 13 is the built in LED on an UNO R3
// variables will change:
int buttonState = 0; // variable for reading the pushbutton status
void setup() {
// initialize the LED pin as an output:
pinMode(ledPin, OUTPUT);
// initialize the pushbutton pin as an input:
pinMode(buttonPin, INPUT_PULLUP); //Using internal resistor to pullup voltage
}
void loop() {
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);
// check if the pushbutton is pressed. If it is, the buttonState is LOW:
if (buttonState == LOW) {
// This is the code portion from Blink and blinks the LED every second while button is pushed
digitalWrite(ledPin, HIGH);
delay(1000);
digitalWrite(ledPin, LOW);
delay(1000);
} else {
// turn LED on:
digitalWrite(ledPin, LOW);
}
}