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100 lines
1.8 KiB
C++
100 lines
1.8 KiB
C++
//
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// FILE: SHEX.cpp
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// AUTHOR: Rob Tillaart
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// VERSION: 0.2.0
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// PURPOSE: Arduino library to generate hex dump over Serial
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// DATE: 2020-05-24
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// URL: https://github.com/RobTillaart/SHEX
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//
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// HISTORY:
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// 0.1.0 2020-05-24 initial version
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// 0.1.1 2020-06-19 fix library.json
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// 0.2.0 2021-01-07 Arduino-CI + unit tests + modifiers.
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#include "SHEX.h"
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SHEX::SHEX(Print* stream, uint8_t len)
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{
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_stream = stream;
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reset();
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// force multiple of 4; max 32
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_length = min(32, ((len + 3) / 4) * 4);
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};
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void SHEX::reset()
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{
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_hexOutput = false;
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_length = 0;
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_charCount = 0;
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_separator = ' ';
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_countFlag = true;
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}
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///////////////////////////////////////////
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//
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// WRITE - the core
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//
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size_t SHEX::write(uint8_t c)
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{
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// PASS THROUGH MODE
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if (_hexOutput == false) return _stream->write(c);
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// HEX MODE
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// handle end of line and position number
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if ((_charCount % _length) == 0)
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{
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_stream->println();
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// separator line every 8 lines
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if ((_charCount % (_length * 8)) == 0)
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{
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_stream->println();
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}
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// next line
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if (_countFlag)
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{
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uint32_t mask = 0xF0000000;
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while((mask > 0xF) && (mask & _charCount) == 0)
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{
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_stream->print('0');
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mask >>= 4;
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}
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_stream->print(_charCount, HEX);
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_stream->print('\t');
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}
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}
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// Print char as HEX
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if (c < 0x10) _stream->print('0');
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_stream->print(c, HEX);
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_stream->print(_separator);
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_charCount++;
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if ((_charCount % 4) == 0) _stream->print(_separator);
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return 1;
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}
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void SHEX::setHEX(bool hexOutput)
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{
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_hexOutput = hexOutput;
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_charCount = 0;
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_stream->println();
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};
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void SHEX::setBytesPerLine(const uint8_t len)
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{
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_length = min(32, ((len + 3) / 4) * 4); // force multiple of 4;
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_charCount = 0;
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_stream->println();
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}
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// -- END OF FILE --
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