5378868 Apr 8, 2018
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@plerup @michaelkoetter @luisesn @Super169 @hallard
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SoftwareSerial.cpp - Implementation of the Arduino software serial for ESP8266.
Copyright (c) 2015-2016 Peter Lerup. All rights reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef SoftwareSerial_h
#define SoftwareSerial_h
#include <inttypes.h>
#include <Stream.h>
// This class is compatible with the corresponding AVR one,
// the constructor however has an optional rx buffer size.
// Speed up to 115200 can be used.
class SoftwareSerial : public Stream {
SoftwareSerial(int receivePin, int transmitPin, bool inverse_logic = false, unsigned int buffSize = 64);
virtual ~SoftwareSerial();
void begin(long speed);
long baudRate();
// Transmit control pin
void setTransmitEnablePin(int transmitEnablePin);
// Enable or disable interrupts during tx
void enableIntTx(bool on);
bool overflow();
int peek();
virtual size_t write(uint8_t byte);
virtual int read();
virtual int available();
virtual void flush();
operator bool() {return m_rxValid || m_txValid;}
// Disable or enable interrupts on the rx pin
void enableRx(bool on);
// One wire control
void enableTx(bool on);
void rxRead();
// AVR compatibility methods
bool listen() { enableRx(true); return true; }
void end() { stopListening(); }
bool isListening() { return m_rxEnabled; }
bool stopListening() { enableRx(false); return true; }
using Print::write;
bool isValidGPIOpin(int pin);
// Member variables
bool m_oneWire;
int m_rxPin, m_txPin, m_txEnablePin;
bool m_rxValid, m_rxEnabled;
bool m_txValid, m_txEnableValid;
bool m_invert;
bool m_overflow;
unsigned long m_bitTime;
bool m_intTxEnabled;
unsigned int m_inPos, m_outPos;
int m_buffSize;
uint8_t *m_buffer;
// If only one tx or rx wanted then use this as parameter for the unused pin