NUC131在Arduino下的Button操作

/*

  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); 

      }

  }

}