mirror of
https://github.com/DarkFlippers/unleashed-firmware.git
synced 2024-12-26 14:51:52 +03:00
223 lines
6.1 KiB
C
223 lines
6.1 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) \
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({ \
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__typeof__(value) _one = (1); \
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(value) |= (_one << (bit)); \
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})
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#define bit_clear(value, bit) \
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({ \
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__typeof__(value) _one = (1); \
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(value) &= ~(_one << (bit)); \
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})
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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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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Flip the data bitwise
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*
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* @param key In data
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* @param bit_count number of data bits
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*
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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 bit_count);
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/** Get parity the data bitwise
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*
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* @param key In data
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* @param bit_count number of data bits
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*
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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 bit_count);
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/** CRC-4
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*
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* @param message array of bytes to check
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* @param size 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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*
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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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size_t size,
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uint8_t polynomial,
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uint8_t init);
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/** CRC-7
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*
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* @param message array of bytes to check
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* @param size 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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*
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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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size_t size,
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uint8_t polynomial,
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uint8_t init);
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/** Generic Cyclic Redundancy Check CRC-8. Example polynomial: 0x31 = x8 + x5 +
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* x4 + 1 (x8 is implicit) Example polynomial: 0x80 = x8 + x7 (a normal
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* bit-by-bit parity XOR)
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*
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* @param message array of bytes to check
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* @param size 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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*
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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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size_t size,
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uint8_t polynomial,
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uint8_t init);
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/** "Little-endian" Cyclic Redundancy Check CRC-8 LE Input and output are
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* reflected, i.e. least significant bit is shifted in first
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*
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* @param message array of bytes to check
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* @param size 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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*
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* @return CRC value
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*/
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uint8_t subghz_protocol_blocks_crc8le(
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uint8_t const message[],
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size_t size,
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uint8_t polynomial,
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uint8_t init);
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/** CRC-16 LSB. Input and output are reflected, i.e. least significant bit is
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* shifted in first. Note that poly and init already need to be reflected
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*
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* @param message array of bytes to check
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* @param size 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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*
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* @return CRC value
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*/
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uint16_t subghz_protocol_blocks_crc16lsb(
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uint8_t const message[],
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size_t size,
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uint16_t polynomial,
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uint16_t init);
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/** CRC-16
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*
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* @param message array of bytes to check
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* @param size 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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*
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* @return CRC value
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*/
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uint16_t subghz_protocol_blocks_crc16(
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uint8_t const message[],
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size_t size,
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uint16_t polynomial,
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uint16_t init);
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/** Digest-8 by "LFSR-based Toeplitz hash"
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*
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* @param message bytes of message data
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* @param size number of bytes to digest
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* @param gen key stream generator, needs to includes the MSB if the
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* LFSR is rolling
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* @param key initial key
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*
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* @return digest value
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*/
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uint8_t subghz_protocol_blocks_lfsr_digest8(
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uint8_t const message[],
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size_t size,
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uint8_t gen,
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uint8_t key);
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/** Digest-8 by "LFSR-based Toeplitz hash", byte reflect, bit reflect
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*
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* @param message bytes of message data
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* @param size number of bytes to digest
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* @param gen key stream generator, needs to includes the MSB if the
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* LFSR is rolling
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* @param key initial key
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*
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* @return digest value
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*/
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uint8_t subghz_protocol_blocks_lfsr_digest8_reflect(
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uint8_t const message[],
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size_t size,
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uint8_t gen,
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uint8_t key);
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/** Digest-16 by "LFSR-based Toeplitz hash"
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*
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* @param message bytes of message data
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* @param size number of bytes to digest
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* @param gen key stream generator, needs to includes the MSB if the
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* LFSR is rolling
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* @param key initial key
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*
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* @return digest value
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*/
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uint16_t subghz_protocol_blocks_lfsr_digest16(
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uint8_t const message[],
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size_t size,
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uint16_t gen,
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uint16_t key);
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/** Compute Addition of a number of bytes
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*
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* @param message bytes of message data
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* @param size number of bytes to sum
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*
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* @return summation value
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*/
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uint8_t subghz_protocol_blocks_add_bytes(uint8_t const message[], size_t size);
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/** Compute bit parity of a single byte (8 bits)
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*
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* @param byte single byte to check
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*
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* @return 1 odd parity, 0 even parity
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*/
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uint8_t subghz_protocol_blocks_parity8(uint8_t byte);
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/** Compute bit parity of a number of bytes
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*
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* @param message bytes of message data
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* @param size number of bytes to sum
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*
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* @return 1 odd parity, 0 even parity
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*/
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uint8_t subghz_protocol_blocks_parity_bytes(uint8_t const message[], size_t size);
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/** Compute XOR (byte-wide parity) of a number of bytes
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*
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* @param message bytes of message data
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* @param size number of bytes to sum
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*
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* @return summation value, per bit-position 1 odd parity, 0 even parity
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*/
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uint8_t subghz_protocol_blocks_xor_bytes(uint8_t const message[], size_t size);
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#ifdef __cplusplus
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}
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#endif
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