/*
Button
Turns on and off a light emitting diode(LED) connected to digital
LED1 is light, when pressing a pushbutton attached to SW1. It work for NuEdu-NUC240, NuEdu-NANO130 and NuEdu-M451.
LED3 is light, when pressing a pushbutton attached to SW2. It work for NuEdu-NUC240, NuEdu-NANO130 and NuEdu-M451.
LED5 is light, when pressing a pushbutton attached to SW3. It work for NuEdu-NUC240, NuEdu-NANO130 and NuEdu-M451.
LED7 is light, when pressing a pushbutton attached to SW4. It work for NuEdu-NUC240, NuEdu-NANO130 and NuEdu-M451.
Note: This sample does not support NuEdu-NUC131.
This example code is in the public domain.
*/
// constants won't change. They're used here to
// set pin numbers:
#define NUM 4
const int buttonPin[NUM] = {44, 39, 24, 25 }; // the number of the pushbutton pin, SW1, SW2, SW3, SW4
const int ledPin[NUM] = {34, 36, 38, 27 }; // the number of the LED pin, LED1, LED3, LED5, LED7
// variables will change:
int buttonState = 0; // variable for reading the pushbutton status
void setup() {
// initialize the LED pin as an output:
for(int i=0;i<NUM;i++)
pinMode(ledPin[i], OUTPUT);
// initialize the pushbutton pin as an input:
for(int i=0;i<NUM;i++)
pinMode(buttonPin[i], INPUT);
}
void loop(){
// read the state of the pushbutton value:
for(int i=0;i<NUM;i++)
{
buttonState = digitalRead(buttonPin[i]);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH) {
// turn LED on:
digitalWrite(ledPin[i], HIGH);
}
else {
// turn LED off:
digitalWrite(ledPin[i], LOW);
}
}
}
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