forked from mirror/uv-k5-firmware
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/* 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 "bsp/dp32g030/crc.h"
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#include "driver/crc.h"
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void CRC_Init(void)
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{
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CRC_CR = 0
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| CRC_CR_CRC_EN_BITS_DISABLE
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| CRC_CR_INPUT_REV_BITS_NORMAL
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| CRC_CR_INPUT_INV_BITS_NORMAL
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| CRC_CR_OUTPUT_REV_BITS_NORMAL
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| CRC_CR_OUTPUT_INV_BITS_NORMAL
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| CRC_CR_DATA_WIDTH_BITS_8
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| CRC_CR_CRC_SEL_BITS_CRC_16_CCITT
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;
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CRC_IV = 0;
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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_CR = (CRC_CR & ~CRC_CR_CRC_EN_MASK) | CRC_CR_CRC_EN_BITS_ENABLE;
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for (i = 0; i < Size; i++) {
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CRC_DATAIN = pData[i];
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}
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Crc = (uint16_t)CRC_DATAOUT;
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CRC_CR = (CRC_CR & ~CRC_CR_CRC_EN_MASK) | CRC_CR_CRC_EN_BITS_DISABLE;
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return Crc;
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}
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