零基础入门学用 Arduino 教程 – 7 Arduino程序 – 变量操作
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/* Blink Turns on an LED on for one second, then off for one second, repeatedly. 反复的点亮LED一秒钟，然后关闭LED一秒钟。 Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to the correct LED pin independent of which board is used. If you want to know what pin the on-board LED is connected to on your Arduino model, check the Technical Specs of your board at https://www.arduino.cc/en/Main/Products 很多Ａｒｄｕｉｎｏ开发板上带有一个你可以控制的ＬＥＤ． 在UNO, MEGA 和 ZERO型号的开发板上， 这个ＬＥＤ连在了引脚１３上。 在MKR1000型号的开发板上，这个ＬＥＤ连在了引脚６上。无论使用哪 种型号的开发板，LED_BUILTIN可以代表正确的LED引脚编号。 This example code is in the public domain. modified 8 May 2014 by Scott Fitzgerald modified 2 Sep 2016 by Arturo Guadalupi modified 8 Sep 2016 by Colby Newman 注释中文翻译：太极创客 www.taichi-maker.com */ int delayTime; // the setup function runs once when you press reset or power the board //当你给开发板通电后或者按下复位按钮后，setup函数运行一次。 void setup() { // initialize digital pin LED_BUILTIN as an output. // 初始化LED_BUILTIN数字引脚为输出模式 pinMode(LED_BUILTIN, OUTPUT); } // the loop function runs over and over again forever // loop 函数永远会反复的运行 void loop() { delayTime = delayTime + 1000; digitalWrite(LED_BUILTIN, HIGH); // 点亮LED（高电平）turn the LED on (HIGH is the voltage level) delay(1000); // 等待1秒 wait for a second digitalWrite(LED_BUILTIN, LOW); // 将电平设置为低来熄灭LED turn the LED off by making the voltage LOW delay(1000); // 等待1秒 wait for a second } |