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https://github.com/DCC-EX/CommandStation-EX.git
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70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/*
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(c) 2015 Ingo FIscher
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buffer serial device
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based on Arduino SoftwareSerial
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef MemStream_h
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#define MemStream_h
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#include <inttypes.h>
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#include <Stream.h>
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#include <avr/pgmspace.h>
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class MemStream : public Stream
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{
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private:
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uint8_t * _buffer;
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const uint16_t _len;
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bool _buffer_overflow;
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uint16_t _pos_read;
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uint16_t _pos_write;
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bool _allowWrite;
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public:
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// public methods
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MemStream(uint8_t *buffer, const uint16_t len, uint16_t content_len = 0, bool allowWrite=true);
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~MemStream() {}
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operator const uint8_t *() const { return _buffer; }
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operator const char *() const { return (const char*)_buffer; }
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uint16_t current_length() const { return _pos_write; }
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bool listen() { return true; }
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void end() {}
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bool isListening() { return true; }
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bool overflow() { bool ret = _buffer_overflow; _buffer_overflow = false; return ret; }
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int peek();
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virtual size_t write(uint8_t byte);
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virtual int read();
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virtual int available();
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virtual void flush();
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void setBufferContent(uint8_t *buffer, uint16_t content_len);
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void setBufferContentFromProgmem(uint8_t *buffer, uint16_t content_len);
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void setBufferContentPosition(uint16_t read_pos, uint16_t write_pos);
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using Print::write;
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};
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#endif
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