FreeCalypso > hg > gsm-net-reveng
annotate trau-decode/osmo_bits.h @ 28:9bcdb091c24d default tip
trau-decode: new program trau-hr-dump
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 18 Aug 2024 08:37:02 +0000 |
parents | d9c095357c32 |
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trau-parse: check and report EFR CRC
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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2 * This include file has been put together from Osmocom (specifically |
d9c095357c32
trau-parse: check and report EFR CRC
Mychaela Falconia <falcon@freecalypso.org>
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3 * libosmocore) header files, containing definitions for bit vector |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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4 * manipulation and CRC functions. |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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5 */ |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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6 |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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7 /* from bits.h */ |
d9c095357c32
trau-parse: check and report EFR CRC
Mychaela Falconia <falcon@freecalypso.org>
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8 |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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9 /*! unpacked bit (0 or 1): 1 bit per byte */ |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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10 typedef uint8_t ubit_t; |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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11 |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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12 /* from crc8gen.h */ |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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13 |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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14 /*! structure describing a given CRC code of max 8 bits */ |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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15 struct osmo_crc8gen_code { |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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16 int bits; /*!< Actual number of bits of the CRC */ |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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17 uint8_t poly; /*!< Polynom (normal representation, MSB omitted */ |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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18 uint8_t init; /*!< Initialization value of the CRC state */ |
d9c095357c32
trau-parse: check and report EFR CRC
Mychaela Falconia <falcon@freecalypso.org>
parents:
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19 uint8_t remainder; /*!< Remainder of the CRC (final XOR) */ |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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20 }; |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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21 |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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22 uint8_t osmo_crc8gen_compute_bits(const struct osmo_crc8gen_code *code, |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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23 const ubit_t *in, int len); |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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24 int osmo_crc8gen_check_bits(const struct osmo_crc8gen_code *code, |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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25 const ubit_t *in, int len, const ubit_t *crc_bits); |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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26 void osmo_crc8gen_set_bits(const struct osmo_crc8gen_code *code, |
d9c095357c32
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Mychaela Falconia <falcon@freecalypso.org>
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27 const ubit_t *in, int len, ubit_t *crc_bits); |