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25 lines
673 B
Go
25 lines
673 B
Go
// Copyright 2025 The Periph Authors. All rights reserved.
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// Use of this source code is governed under the Apache License, Version 2.0
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// that can be found in the LICENSE file.
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// Package common contains functions used across multiple packages. For
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// example, a CRC8 calculation
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package common
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// CRC8 calculates the 8-bit CRC of the byte slice parameter and returns the
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// calculated value. CRC bytes are used in sensors from TI and Sensirion.
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func CRC8(bytes []byte) byte {
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var crc byte = 0xff
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for _, val := range bytes {
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crc ^= val
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for range 8 {
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if (crc & 0x80) == 0 {
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crc <<= 1
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} else {
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crc = (byte)((crc << 1) ^ 0x31)
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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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