OpenCR入门教程-开发示例-LED灯

说明

• 本教程介绍OpenCR板上的内置LED测试示例

代码

OpenCR中有4个LED可用，USER1〜4

//该代码依次打开和关闭所有LED
#define BDPIN_LED_USER_1        22
#define BDPIN_LED_USER_2        23
#define BDPIN_LED_USER_3        24
#define BDPIN_LED_USER_4        25

int led_pin = 13;
int led_pin_user[4] = { BDPIN_LED_USER_1, BDPIN_LED_USER_2, BDPIN_LED_USER_3, BDPIN_LED_USER_4 };

void setup() {
  // Set up the built-in LED pin as an output:
  pinMode(led_pin, OUTPUT);
  pinMode(led_pin_user[0], OUTPUT);
  pinMode(led_pin_user[1], OUTPUT);
  pinMode(led_pin_user[2], OUTPUT);
  pinMode(led_pin_user[3], OUTPUT);
}

void loop() {
  int i;

  digitalWrite(led_pin, HIGH);  // set to as HIGH LED is turn-off
  delay(100);                   // Wait for 0.1 second
  digitalWrite(led_pin, LOW);   // set to as LOW LED is turn-on
  delay(100);                   // Wait for 0.1 second

  for( i=0; i<4; i++ )
  {
    digitalWrite(led_pin_user[i], HIGH);
    delay(100);
  }
  for( i=0; i<4; i++ )
  {
    digitalWrite(led_pin_user[i], LOW);
    delay(100);
  }
}

演示视频