[SoftwareSerial]
描述
Enables the selected software serial port to listen. Only one software serial port can listen at a time; data that arrives for other ports will be discarded. Any data already received is discarded during the call to listen() (unless the given instance is already listening).
語法
// set up a new serial port SoftwareSerial mySerial = SoftwareSerial(rxPin, txPin); mySerial.listen()
參數
mySerial: the name of the instance to listen
回傳
None
範例
#include <SoftwareSerial.h>
// software serial : TX = digital pin 10, RX = digital pin 11
SoftwareSerial portOne(10, 11);
// software serial : TX = digital pin 8, RX = digital pin 9
SoftwareSerial portTwo(8, 9);
void setup()
{
// Start the hardware serial port
Serial.begin(9600);
// Start both software serial ports
portOne.begin(9600);
portTwo.begin(9600);
}
void loop()
{
portOne.listen();
if (portOne.isListening()) {
Serial.println("Port One is listening!");
} else {
Serial.println("Port One is not listening!");
}
if (portTwo.isListening()) {
Serial.println("Port Two is listening!");
} else {
Serial.println("Port Two is not listening!");
}
}參考
- SoftwareSerial()
- SoftwareSerial.begin()
- SoftwareSerial.read()
- SoftwareSerial.print()
- SoftwareSerial.println()
函式庫參考主頁面
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。
