【程式設計篇】加入使用者控制的技巧－ 下篇

表2 使用者控制 Led 程式二

使用者控制Led程式二(Water_light_Button_int)

const byte interruptPin = 2;

int LedDirection = 1 ;

int LedPins[] = {4,5,6,7,8,9,10,11} ;

int NowLedOn = 0 ;

// the setup function runs once when you press reset or power the board

void setup() {

// initialize digital pin Blink_Led_Pin as an output.

    // pinMode(ButtonPin,INPUT) ;

    for(int i=0; i <8 ; i++)

        {

              pinMode(LedPins[i], OUTPUT);    //定義Blink_Led_Pin為輸出腳位

              digitalWrite(LedPins[i], LOW);    // 將腳位Blink_Led_Pin設定為低電位 turn the LED off by making the voltage LOW

        }

pinMode(interruptPin, INPUT_PULLUP);

attachInterrupt(digitalPinToInterrupt(interruptPin), ButtonisPressed, FALLING );

}

// the loop function runs over and over again forever

void loop() {

   // int btnValue = digitalRead(ButtonPin) ;

// if (!btnValue)

//         LedDirection = LedDirection* (-1 );

   // if

       for (int i =0 ; i < 8; i++)

          {

              if (NowLedOn == i)

              {

                digitalWrite(LedPins[i], HIGH);   // turn on Led

              }

              else

              {

                digitalWrite(LedPins[i], LOW);    // turn off Led

              }

          }

          if (LedDirection == 1)

              {

                NowLedOn ++ ;   //right side move

              }

              else

              {

                NowLedOn -- ;     //left side move

              }

     if (NowLedOn >=8)      // check right side

          NowLedOn= 0 ;

     if (NowLedOn < 0)      // check left side

          NowLedOn= 7 ;

         delay(1000) ;

}

void ButtonisPressed()

{

   LedDirection = LedDirection* (-1 );

}

程式下載：
https://github.com/brucetsao/arduino_Programming_Trick