Arduino程式與C語言程式很相似,但語法更簡單且易學易用,完全將複雜的設定編寫成「函式」,使用者只需輸入參數到函式中即可。
/* 多行註解
Blink
Turns on an LED on for one second, then off for one second, repeatedly.
Most Arduinos have an on-board LED you can control. On the Uno and
Leonardo, it is attached to digital pin 13. If you're unsure what
pin the on-board LED is connected to on your Arduino model, check
the documentation at http://www.arduino.cc
This example code is in the public domain.
modified 8 May 2014
by Scott Fitzgerald
*/
// the setup function runs once when you press reset or power the board 單行註解
void setup() { setup()設定變數初值、接腳模式
// initialize digital pin 13 as an output.
pinMode(13, OUTPUT);
}
// the loop function runs over and over again forever
void loop() { loop()重覆執行所須動作
digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(13, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
pinMode(13, OUTPUT); 將13接腳設定為輸出的模式
digitalWrite(13, HIGH); 將13接腳輸出高電壓的狀態
digitalWrite(13, LOW); 將13接腳輸出低電壓的狀態