mirror of
https://github.com/DCC-EX/CommandStation-EX.git
synced 2024-12-24 05:11:24 +01:00
6c0b5d82be
Count is stashed at start of message so can be got without counting. Commit discards empty replies automatically.
48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
#ifndef RingStream_h
|
|
#define RingStream_h
|
|
/*
|
|
* © 2020, Chris Harlow. All rights reserved.
|
|
*
|
|
* This file is part of DCC-EX CommandStation-EX
|
|
*
|
|
* This is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* It is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <Arduino.h>
|
|
|
|
class RingStream : public Print {
|
|
|
|
public:
|
|
RingStream( const uint16_t len);
|
|
|
|
virtual size_t write(uint8_t b);
|
|
using Print::write;
|
|
int read();
|
|
int count();
|
|
int freeSpace();
|
|
void mark(uint8_t b);
|
|
bool commit();
|
|
|
|
private:
|
|
int _len;
|
|
int _pos_write;
|
|
int _pos_read;
|
|
bool _overflow;
|
|
int _mark;
|
|
int _count;
|
|
byte * _buffer;
|
|
};
|
|
|
|
#endif
|