Arduino Reference - SoftwareSerialOverflow

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## SoftwareSerial: overflow()

#### Description

Tests to see if a software serial buffer overflow has occurred. Calling this function clears the overflow flag, meaning that subsequent calls will return false unless another byte of data has been received and discarded in the meantime.

The software serial buffer can hold 64 bytes.

#### Syntax

mySerial.overflow()

#### Parameters

none

#### Returns

boolean

#### Example

#include <SoftwareSerial.h>
// software serial : TX = digital pin 10, RX = digital pin 11
SoftwareSerial portOne(10,11);
void setup()
{
// Start the hardware serial port
Serial.begin(9600);
// Start software serial port
portOne.begin(9600);
}
void loop()
{
if (portOne.overflow()) {
Serial.println("SoftwareSerial overflow!");
}
[Get Code]

#### See also

- SoftwareSerial()
- read()
- print()
- println()

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