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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).
mySerial.listen()
mySerial:the name of the instance to listen
None
#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!"
)
;
}
}
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