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Diffstat (limited to 'lib/etl/crc16_kermit.h')
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diff --git a/lib/etl/crc16_kermit.h b/lib/etl/crc16_kermit.h
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+///\file
+
+/******************************************************************************
+The MIT License(MIT)
+
+Embedded Template Library.
+https://github.com/ETLCPP/etl
+http://www.etlcpp.com
+
+Copyright(c) 2014 jwellbelove
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files(the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions :
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+******************************************************************************/
+
+#ifndef __ETL_CRC16_KERMIT__
+#define __ETL_CRC16_KERMIT__
+
+#include <stdint.h>
+#include <iterator>
+
+#include "platform.h"
+#include "frame_check_sequence.h"
+
+#if defined(ETL_COMPILER_KEIL)
+#pragma diag_suppress 1300
+#endif
+
+///\defgroup crc16_kermit 16 bit CRC Kermit calculation
+///\ingroup crc
+
+namespace etl
+{
+ //***************************************************************************
+ /// CRC Kermit table
+ /// \ingroup crc
+ //***************************************************************************
+ extern const uint16_t CRC_KERMIT[];
+
+ //***************************************************************************
+ /// CRC16 Kermit policy.
+ /// Calculates CRC16 Kermit using polynomial 0x1021
+ //***************************************************************************
+ struct crc_policy_16_kermit
+ {
+ typedef uint16_t value_type;
+
+ inline uint16_t initial() const
+ {
+ return 0;
+ }
+
+ inline uint16_t add(uint16_t crc, uint8_t value) const
+ {
+ return (crc >> 8) ^ CRC_KERMIT[(crc ^ value) & 0xFF];
+ }
+
+ inline uint16_t final(uint16_t crc) const
+ {
+ return crc;
+ }
+ };
+
+ //*************************************************************************
+ /// CRC16 Kermit
+ //*************************************************************************
+ class crc16_kermit : public etl::frame_check_sequence<etl::crc_policy_16_kermit>
+ {
+ public:
+
+ //*************************************************************************
+ /// Default constructor.
+ //*************************************************************************
+ crc16_kermit()
+ {
+ this->reset();
+ }
+
+ //*************************************************************************
+ /// Constructor from range.
+ /// \param begin Start of the range.
+ /// \param end End of the range.
+ //*************************************************************************
+ template<typename TIterator>
+ crc16_kermit(TIterator begin, const TIterator end)
+ {
+ this->reset();
+ this->add(begin, end);
+ }
+ };
+}
+
+#endif