millis()

[Time]

描述

Returns the number of milliseconds since the 86Duino board began running the current program. This number will overflow (go back to zero), after approximately 50 days.

參數

None

回傳

Number of milliseconds since the program started (unsigned long)

Example Code

unsigned long time;
 
void setup(){
  Serial.begin(9600);
}
void loop(){
  Serial.print("Time: ");
  time = millis();
  //prints time since program started
  Serial.println(time);
  // wait a second so as not to send massive amounts of data
  delay(1000);
}

Tip

Note that the parameter for millis is an unsigned long, errors may be generated if a programmer tries to do math with other datatypes such as ints.

參考

• [程式語法] micros()
• [程式語法] delay()
• [程式語法] delayMicroseconds()
• [Example] Tutorial: Blink Without Delay

語法參考主頁面

86Duino 參考的文本是根據 Creative Commons Attribution-ShareAlike 3.0 License，部分文本是從 the Arduino reference 修改的。 參考中的代碼示例已發佈到公共領域。