IoT 아두이노 0421 - LED_ex1

// LED0, LED1, LED2, LED3, LED4, LED5, LED6, LED7 pin
int pin_LED[8] = {22, 24, 26, 28, 30, 32, 34, 36};

void setup() {
  // put your setup code here, to run once:
  for(int i=0; i<8; i++)
  {
    pinMode(pin_LED[i], OUTPUT);  // LED pin Output setup
    digitalWrite(pin_LED[i], LOW);  // LED pin LOW Output
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  for(int i=0; i<256; i++)
  {
    LED_control(i);  // LED control
    delay(500);  // wait 0.5 second
  }
}

// LED contorl function
void LED_control(uint8_t da)
{
  for(int i=0; i<8; i++)
  {
    digitalWrite(pin_LED[i], (da >> i) & 0x1);
  }
}