mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-12-04 02:09:12 +00:00
79 lines
2 KiB
C
79 lines
2 KiB
C
#pragma once
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#include <stdbool.h>
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#include <stdint.h>
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#include <stddef.h>
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#define bit_read(value, bit) (((value) >> (bit)) & 0x01)
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#define bit_set(value, bit) ((value) |= (1UL << (bit)))
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#define bit_clear(value, bit) ((value) &= ~(1UL << (bit)))
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#define bit_write(value, bit, bitvalue) (bitvalue ? bit_set(value, bit) : bit_clear(value, bit))
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#define DURATION_DIFF(x, y) ((x < y) ? (y - x) : (x - y))
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#define abs(x) ((x) > 0 ? (x) : -(x))
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Flip the data bitwise.
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* @param key In data
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* @param count_bit number of data bits
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* @return Reverse data
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*/
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uint64_t subghz_protocol_blocks_reverse_key(uint64_t key, uint8_t count_bit);
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/**
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* Get parity the data bitwise.
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* @param key In data
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* @param count_bit number of data bits
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* @return parity
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*/
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uint8_t subghz_protocol_blocks_get_parity(uint64_t key, uint8_t count_bit);
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/**
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* CRC-4.
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* @param message array of bytes to check
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* @param nBytes number of bytes in message
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* @param polynomial CRC polynomial
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* @param init starting crc value
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* @return CRC value
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*/
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uint8_t subghz_protocol_blocks_crc4(
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uint8_t const message[],
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unsigned nBytes,
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uint8_t polynomial,
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uint8_t init);
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/**
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* CRC-7.
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* @param message array of bytes to check
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* @param nBytes number of bytes in message
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* @param polynomial CRC polynomial
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* @param init starting crc value
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* @return CRC value
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*/
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uint8_t subghz_protocol_blocks_crc7(
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uint8_t const message[],
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unsigned nBytes,
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uint8_t polynomial,
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uint8_t init);
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/**
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* Generic Cyclic Redundancy Check CRC-8.
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* Example polynomial: 0x31 = x8 + x5 + x4 + 1 (x8 is implicit)
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* Example polynomial: 0x80 = x8 + x7 (a normal bit-by-bit parity XOR)
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* @param message array of bytes to check
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* @param nBytes number of bytes in message
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* @param polynomial byte is from x^7 to x^0 (x^8 is implicitly one)
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* @param init starting crc value
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* @return CRC value
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*/
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uint8_t subghz_protocol_blocks_crc8(
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uint8_t const message[],
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unsigned nBytes,
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uint8_t polynomial,
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uint8_t init);
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#ifdef __cplusplus
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}
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#endif
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