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bool HardwareSerial::writeable(void) #62

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bool HardwareSerial::writeable(void) #62

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6 changes: 6 additions & 0 deletions hardware/arduino/cores/arduino/HardwareSerial.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -380,6 +380,12 @@ void HardwareSerial::flush()
;
}

bool HardwareSerial::writeable()
{
int i = (_tx_buffer->head + 1) % SERIAL_BUFFER_SIZE;
return (i != _tx_buffer->tail);
}

size_t HardwareSerial::write(uint8_t c)
{
int i = (_tx_buffer->head + 1) % SERIAL_BUFFER_SIZE;
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1 change: 1 addition & 0 deletions hardware/arduino/cores/arduino/HardwareSerial.h
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Expand Up @@ -55,6 +55,7 @@ class HardwareSerial : public Stream
virtual int peek(void);
virtual int read(void);
virtual void flush(void);
virtual bool writeable(void);
virtual size_t write(uint8_t);
using Print::write; // pull in write(str) and write(buf, size) from Print
};
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