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[helper] Make crc8 function more flexible to avoid reimplementation in individual components (#10201)

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Jesse Hills
2025-08-20 14:27:08 +12:00
committed by GitHub
parent 0e31bc1a67
commit 0b50ef227b
19 changed files with 379 additions and 147 deletions
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esphome/core/helpers.h
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@@ -145,8 +145,8 @@ template<typename T, typename U> T remap(U value, U min, U max, T min_out, T max
return (value - min) * (max_out - min_out) / (max - min) + min_out;
}
/// Calculate a CRC-8 checksum of \p data with size \p len using the CRC-8-Dallas/Maxim polynomial.
uint8_t crc8(const uint8_t *data, uint8_t len);
/// Calculate a CRC-8 checksum of \p data with size \p len.
uint8_t crc8(const uint8_t *data, uint8_t len, uint8_t crc = 0x00, uint8_t poly = 0x8C, bool msb_first = false);
/// Calculate a CRC-16 checksum of \p data with size \p len.
uint16_t crc16(const uint8_t *data, uint16_t len, uint16_t crc = 0xffff, uint16_t reverse_poly = 0xa001,