kopia lustrzana https://github.com/open-ham/OpenGD77
84 wiersze
2.3 KiB
C
84 wiersze
2.3 KiB
C
/*
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* Copyright (C) 2009,2014,2015,2016 Jonathan Naylor, G4KLX
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*
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* Ported to OpenGD77 by Roger Clark VK3KYY / G4KYF
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program 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
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* GNU General Public License for more details.
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*/
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#include "hotspot/dmrUtils.h"
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void dmrUtils_byteToBitsBE(unsigned char byte, bool *bits)
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{
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bits[0U] = (byte & 0x80U) == 0x80U;
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bits[1U] = (byte & 0x40U) == 0x40U;
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bits[2U] = (byte & 0x20U) == 0x20U;
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bits[3U] = (byte & 0x10U) == 0x10U;
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bits[4U] = (byte & 0x08U) == 0x08U;
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bits[5U] = (byte & 0x04U) == 0x04U;
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bits[6U] = (byte & 0x02U) == 0x02U;
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bits[7U] = (byte & 0x01U) == 0x01U;
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}
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void dmrUtils_byteToBitsLE(unsigned char byte, bool *bits)
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{
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bits[0U] = (byte & 0x01U) == 0x01U;
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bits[1U] = (byte & 0x02U) == 0x02U;
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bits[2U] = (byte & 0x04U) == 0x04U;
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bits[3U] = (byte & 0x08U) == 0x08U;
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bits[4U] = (byte & 0x10U) == 0x10U;
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bits[5U] = (byte & 0x20U) == 0x20U;
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bits[6U] = (byte & 0x40U) == 0x40U;
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bits[7U] = (byte & 0x80U) == 0x80U;
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}
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void dmrUtils_bitsToByteBE(const bool* bits, uint8_t *out)
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{
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*out = bits[0U] ? 0x80U : 0x00U;
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*out |= bits[1U] ? 0x40U : 0x00U;
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*out |= bits[2U] ? 0x20U : 0x00U;
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*out |= bits[3U] ? 0x10U : 0x00U;
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*out |= bits[4U] ? 0x08U : 0x00U;
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*out |= bits[5U] ? 0x04U : 0x00U;
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*out |= bits[6U] ? 0x02U : 0x00U;
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*out |= bits[7U] ? 0x01U : 0x00U;
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}
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void dmrUtils_bitsToByteLE(const bool* bits, uint8_t *out)
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{
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*out = bits[0U] ? 0x01U : 0x00U;
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*out |= bits[1U] ? 0x02U : 0x00U;
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*out |= bits[2U] ? 0x04U : 0x00U;
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*out |= bits[3U] ? 0x08U : 0x00U;
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*out |= bits[4U] ? 0x10U : 0x00U;
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*out |= bits[5U] ? 0x20U : 0x00U;
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*out |= bits[6U] ? 0x40U : 0x00U;
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*out |= bits[7U] ? 0x80U : 0x00U;
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}
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unsigned int dmrUtils_compare(const unsigned char *bytes1, const unsigned char *bytes2, unsigned int length)
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{
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unsigned int diffs = 0U;
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for (unsigned int i = 0U; i < length; i++)
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{
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unsigned char v = bytes1[i] ^ bytes2[i];
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while (v != 0U)
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{
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v &= v - 1U;
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diffs++;
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}
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}
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return diffs;
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}
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