Bluno M3 GPIO

目录：
    概述
    GPIO 模式
    GPIO 参考函数
    参考例程

1.概述
Bluno M3是非常容易使用通用输入/输出数字IO口，GPIO端口是从数字0到38。

2.GPIO 模式
每个GPIO管脚都可以通过 pinMode()配置成数字输出或者输入等。


3.GPIO 参考函数
pinMode()
digitalRead()
digitaalWrite()

4.参考例程
/*
  Blink
  Turns on an LED on for one second, then off for one second, repeatedly.

  This example code is in the public domain.
*/

// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int led = 13;

// the setup routine runs once when you press reset:
void setup() {
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);
}

// the loop routine runs over and over again forever:
void loop() {
  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);               // wait for a second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);               // wait for a second
}