SoftwareSerial
- SoftwareSerial()
- available()
- begin()
- isListening()
- overflow()
- peek()
- read()
- print()
- println()
- listen()
- write()
专题
ArduinoSoftwareSerial.available()
Get the number of bytes (characters) available for reading from a software serial port. This is data that has already arrived and stored in the serial receive buffer.
Syntax
mySerial.available()Parameters
None.
Returns
The number of bytes available to read.
Example
#include <SoftwareSerial.h>
#define rxPin 10
#define txPin 11
// Set up a new SoftwareSerial object
SoftwareSerial mySerial = SoftwareSerial(rxPin, txPin);
void setup() {
// Define pin modes for TX and RX
pinMode(rxPin, INPUT);
pinMode(txPin, OUTPUT);
// Set the baud rate for the SoftwareSerial object
mySerial.begin(9600);
}
void loop() {
if (mySerial.available() > 0) {
mySerial.read();
}
}
