mirror of
https://github.com/armel/uv-k1-k5v3-firmware-custom.git
synced 2026-10-02 03:15:37 +00:00
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/* Copyright 2025 muzkr https://github.com/muzkr
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* Copyright 2023 Dual Tachyon
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* https://github.com/DualTachyon
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "crc.h"
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void CRC_Init(void)
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{
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}
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uint16_t CRC_Calculate(const void *pBuffer, uint16_t Size)
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{
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const uint8_t *pData = (const uint8_t *)pBuffer;
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uint16_t i, Crc;
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Crc = 0;
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for (i = 0; i < Size; i++)
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{
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Crc ^= (pData[i] << 8);
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for (int j = 0; j < 8; j++)
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{
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// Check bit [15]
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if (Crc >> 15)
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{
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Crc = (Crc << 1) ^ 0x1021;
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}
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else
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{
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Crc = Crc << 1;
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}
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}
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}
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return Crc;
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}
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