SoftwareSerial
- SoftwareSerial()
- available()
- begin()
- isListening()
- overflow()
- peek()
- read()
- print()
- println()
- listen()
- write()
专题
ArduinoSoftwareSerial.listen()
Enables the selected SoftwareSerial object to listen. Only one SoftwareSerial object 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() function (unless the given instance is already listening).
Syntax
mySerial.listen()Parameters
None.
Returns
Returns true if it replaces another.
Example
#include <SoftwareSerial.h>
// Set up a new SoftwareSerial object with RX in digital pin 10 and TX in digital pin 11
SoftwareSerial portOne(10, 11);
// Set up a new SoftwareSerial object with RX in digital pin 8 and TX in digital pin 9
SoftwareSerial portTwo(8, 9);
void setup() {
// Set the baud rate for the Serial object
Serial.begin(9600);
// Set the baud rate for the SerialSoftware objects
portOne.begin(9600);
portTwo.begin(9600);
}
void loop() {
// Enable SoftwareSerial object to listen
portOne.listen();
if (portOne.isListening()) {
Serial.println("portOne is listening!");
} else {
Serial.println("portOne is not listening!");
}
if (portTwo.isListening()) {
Serial.println("portTwo is listening!");
} else {
Serial.println("portTwo is not listening!");
}
}
