Eckstein komponente KS0530 - Page 103

103
button
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*/
#define LED 3 //define the LED pin as D3
#define button 2 //define the pin of push button module as D2
volatile int buttonState; //the state of the level output by the push
void setup()
{
Serial.begin(9600); //set baud rate to 9600
pinMode(button, INPUT); // initialize digital pin button as an input.
pinMode(LED, OUTPUT); // initialize digital pin LED as an output.
}
void loop ()
{
buttonState = digitalRead(button); //read the state of the push
button module
if (buttonState == 0) //if the button is pressed
{
digitalWrite(LED, HIGH); //the LED lights up
}