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gsm_utils.h
Go to the documentation of this file.
/*
* (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de>
* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2009-2010 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#pragma once
#include <stddef.h>
#include <stdint.h>
#include <osmocom/core/defs.h>
#include <osmocom/core/utils.h>
#define ADD_MODULO(sum, delta, modulo) do { \
if ((sum += delta) >= modulo) \
sum -= modulo; \
} while (0)
#define GSM_MAX_FN (26*51*2048)
#define GSM_FN_UNSET 0xFFFFFFFF
/* Max length of random identifier which can be requested via osmo_get_rand_id() */
#define OSMO_MAX_RAND_ID_LEN 16
struct gsm_time {
uint32_t fn; /* FN count */
uint16_t t1; /* FN div (26*51) */
uint8_t t2; /* FN modulo 26 */
uint8_t t3; /* FN modulo 51 */
uint8_t tc;
};
enum gsm_band {
GSM_BAND_850 = 1,
GSM_BAND_900 = 2,
GSM_BAND_1800 = 4,
GSM_BAND_1900 = 8,
GSM_BAND_450 = 0x10,
GSM_BAND_480 = 0x20,
GSM_BAND_750 = 0x40,
GSM_BAND_810 = 0x80,
};
const char *gsm_band_name(enum gsm_band band);
enum gsm_band gsm_band_parse(const char *mhz);
int osmo_get_rand_id(uint8_t *out, size_t len);
int gsm_7bit_decode_n(char *decoded, size_t n, const uint8_t *user_data, uint8_t length);
int gsm_7bit_decode_n_ussd(char *decoded, size_t n, const uint8_t *user_data, uint8_t length);
int gsm_7bit_encode_n(uint8_t *result, size_t n, const char *data, int *octets_written);
int gsm_7bit_encode_n_ussd(uint8_t *result, size_t n, const char *data, int *octets_written);
/* the four functions below are helper functions and here for the unit test */
int gsm_septets2octets(uint8_t *result, const uint8_t *rdata, uint8_t septet_len, uint8_t padding)
OSMO_DEPRECATED("This function is unable to handle more than 255 septets, "
"use gsm_septet_pack() instead.");
int gsm_septet_pack(uint8_t *result, const uint8_t *rdata, size_t septet_len, uint8_t padding);
int gsm_septet_encode(uint8_t *result, const char *data);
uint8_t gsm_get_octet_len(const uint8_t sept_len);
int gsm_7bit_decode_n_hdr(char *decoded, size_t n, const uint8_t *user_data, uint8_t length, uint8_t ud_hdr_ind);
int ms_class_gmsk_dbm(enum gsm_band band, int ms_class);
int ms_pwr_ctl_lvl(enum gsm_band band, unsigned int dbm);
int ms_pwr_dbm(enum gsm_band band, uint8_t lvl);
/* According to TS 05.08 Chapter 8.1.4 */
int rxlev2dbm(uint8_t rxlev);
uint8_t dbm2rxlev(int dbm);
/* According to GSM 04.08 Chapter 10.5.1.6 */
static inline int ms_cm2_a5n_support(uint8_t *cm2, unsigned n) {
switch (n) {
case 0: return 1;
case 1: return (cm2[0] & (1<<3)) ? 0 : 1;
case 2: return (cm2[2] & (1<<0)) ? 1 : 0;
case 3: return (cm2[2] & (1<<1)) ? 1 : 0;
default:
return 0;
}
}
/* According to GSM 04.08 Chapter 10.5.1.7 */
static inline int ms_cm3_a5n_support(uint8_t *cm3, unsigned n) {
switch (n) {
case 4: return (cm3[0] & (1<<0)) ? 1 : 0;
case 5: return (cm3[0] & (1<<1)) ? 1 : 0;
case 6: return (cm3[0] & (1<<2)) ? 1 : 0;
case 7: return (cm3[0] & (1<<3)) ? 1 : 0;
default:
return 0;
}
}
/* According to GSM 04.08 Chapter 10.5.2.29 */
static inline int rach_max_trans_val2raw(int val) { return (val >> 1) & 3; }
static inline int rach_max_trans_raw2val(int raw) {
const int tbl[4] = { 1, 2, 4, 7 };
return tbl[raw & 3];
}
static inline uint8_t rach_tx_integer_raw2val(uint8_t raw) {
const int tbl[6] = { 14, 16, 20, 25, 32, 50 };
raw &= 0x0f;
if (raw <= 9)
return raw + 3;
return tbl[raw - 10];
}
#define ARFCN_PCS 0x8000
#define ARFCN_UPLINK 0x4000
#define ARFCN_FLAG_MASK 0xf000 /* Reserve the upper 5 bits for flags */
int gsm_arfcn2band_rc(uint16_t arfcn, enum gsm_band *band);
enum gsm_band gsm_arfcn2band(uint16_t arfcn) OSMO_DEPRECATED("Use gsm_arfcn2band_rc() instead");
/* Convert an ARFCN to the frequency in MHz * 10 */
uint16_t gsm_arfcn2freq10(uint16_t arfcn, int uplink);
/* Convert a Frequency in MHz * 10 to ARFCN */
uint16_t gsm_freq102arfcn(uint16_t freq10, int uplink);
/* Convert from frame number to GSM time */
void gsm_fn2gsmtime(struct gsm_time *time, uint32_t fn);
/* Parse GSM Frame Number into printable string */
char *gsm_fn_as_gsmtime_str(uint32_t fn);
/* Convert from GSM time to frame number */
uint32_t gsm_gsmtime2fn(const struct gsm_time *time);
/* Returns static buffer with string representation of a GSM Time */
char *osmo_dump_gsmtime(const struct gsm_time *tm);
char *osmo_dump_gsmtime_buf(char *buf, size_t buf_len, const struct gsm_time *tm);
char *osmo_dump_gsmtime_c(const void *ctx, const struct gsm_time *tm);
/* Reduced Frame Number (3GPP TS 44.018 §10.5.2.38) */
#define GSM_RFN_MODULUS 42432
uint32_t gsm_rfn2fn(uint16_t rfn, uint32_t curr_fn);
static inline uint16_t gsm_fn2rfn(uint32_t fn)
{
return fn % GSM_RFN_MODULUS;
}
/* GSM TS 03.03 Chapter 2.6 */
enum gprs_tlli_type {
TLLI_LOCAL,
TLLI_FOREIGN,
TLLI_RANDOM,
TLLI_AUXILIARY,
TLLI_RESERVED,
TLLI_G_RNTI,
TLLI_RAND_G_RNTI,
};
/* TS 03.03 Chapter 2.6 */
int gprs_tlli_type(uint32_t tlli);
uint32_t gprs_tmsi2tlli(uint32_t p_tmsi, enum gprs_tlli_type type);
uint32_t gprs_tlli2tmsi(uint32_t tlli);
/* Osmocom internal, not part of any gsm spec */
enum gsm_phys_chan_config {
GSM_PCHAN_NONE,
GSM_PCHAN_CCCH,
GSM_PCHAN_CCCH_SDCCH4,
GSM_PCHAN_TCH_F,
GSM_PCHAN_TCH_H,
GSM_PCHAN_SDCCH8_SACCH8C,
GSM_PCHAN_PDCH, /* GPRS PDCH */
GSM_PCHAN_TCH_F_PDCH, /* TCH/F if used, PDCH otherwise */
GSM_PCHAN_UNKNOWN,
GSM_PCHAN_CCCH_SDCCH4_CBCH,
GSM_PCHAN_SDCCH8_SACCH8C_CBCH,
GSM_PCHAN_OSMO_DYN,
_GSM_PCHAN_MAX
};
/* Backward compatibility with older naming: */
#define GSM_PCHAN_TCH_F_TCH_H_PDCH GSM_PCHAN_OSMO_DYN
/* Osmocom internal, not part of any gsm spec */
enum gsm_chan_t {
GSM_LCHAN_NONE,
GSM_LCHAN_SDCCH,
GSM_LCHAN_TCH_F,
GSM_LCHAN_TCH_H,
GSM_LCHAN_UNKNOWN,
GSM_LCHAN_CCCH,
GSM_LCHAN_PDTCH,
GSM_LCHAN_CBCH,
_GSM_LCHAN_MAX
};
extern const struct value_string gsm_chan_t_names[];
static inline const char *gsm_chan_t_name(enum gsm_chan_t val)
{ return get_value_string(gsm_chan_t_names, val); }
/* Deprectated functions */
/* Limit encoding and decoding to use no more than this amount of buffer bytes */
#define GSM_7BIT_LEGACY_MAX_BUFFER_SIZE 0x10000
int gsm_7bit_decode(char *decoded, const uint8_t *user_data, uint8_t length) OSMO_DEPRECATED("Use gsm_7bit_decode_n() instead");
int gsm_7bit_decode_ussd(char *decoded, const uint8_t *user_data, uint8_t length) OSMO_DEPRECATED("Use gsm_7bit_decode_n_ussd() instead");
int gsm_7bit_encode(uint8_t *result, const char *data) OSMO_DEPRECATED("Use gsm_7bit_encode_n() instead");
int gsm_7bit_encode_ussd(uint8_t *result, const char *data, int *octets_written) OSMO_DEPRECATED("Use gsm_7bit_encode_n_ussd() instead");
int gsm_7bit_encode_oct(uint8_t *result, const char *data, int *octets_written) OSMO_DEPRECATED("Use gsm_7bit_encode_n() instead");
enum osmo_rat_type {
OSMO_RAT_UNKNOWN = 0,
OSMO_RAT_GERAN_A,
OSMO_RAT_UTRAN_IU,
OSMO_RAT_EUTRAN_SGS,
/* keep this last */
OSMO_RAT_COUNT
};
extern const struct value_string osmo_rat_type_names[];
inline static const char *osmo_rat_type_name(enum osmo_rat_type val)
{ return get_value_string(osmo_rat_type_names, val); }
defs.h
tlli
uint32_t tlli
n
write Write running configuration to or terminal n Write configuration to the copy running config startup Copy configuration n Copy running config to n Copy running config to startup write Write running configuration to or terminal n Write to terminal n
gsm_chan_t_names
const struct value_string gsm_chan_t_names[]
Definition gsm48.c:547
data
uint8_t data[0]
Definition gsm_03_41.h:16
OSMO_DEPRECATED
#define OSMO_DEPRECATED(text)
get_value_string
const char * get_value_string(const struct value_string *vs, uint32_t val)
cm2
struct gsm48_classmark2 cm2
Definition gsm_04_08.h:1
len
uint8_t len
Definition gsm_04_11.h:0
length
uint8_t length
Definition gsm_08_08.h:1
gsm_fn2gsmtime
void gsm_fn2gsmtime(struct gsm_time *time, uint32_t fn)
Parse GSM Frame Number into struct gsm_time.
Definition gsm_utils.c:866
gsm_7bit_decode_n
int gsm_7bit_decode_n(char *decoded, size_t n, const uint8_t *user_data, uint8_t length)
Decode a sequence of GSM 03.38 encoded 7 bit characters.
Definition gsm_utils.c:262
gsm_fn_as_gsmtime_str
char * gsm_fn_as_gsmtime_str(uint32_t fn)
Parse GSM Frame Number into printable string.
Definition gsm_utils.c:878
gsm_freq102arfcn
uint16_t gsm_freq102arfcn(uint16_t freq10, int uplink)
Convert a Frequency in MHz * 10 to ARFCN.
Definition gsm_utils.c:834
gprs_tlli_type
gprs_tlli_type
Definition gsm_utils.h:200
TLLI_RANDOM
@ TLLI_RANDOM
Definition gsm_utils.h:203
TLLI_AUXILIARY
@ TLLI_AUXILIARY
Definition gsm_utils.h:204
TLLI_LOCAL
@ TLLI_LOCAL
Definition gsm_utils.h:201
TLLI_RESERVED
@ TLLI_RESERVED
Definition gsm_utils.h:205
TLLI_FOREIGN
@ TLLI_FOREIGN
Definition gsm_utils.h:202
TLLI_G_RNTI
@ TLLI_G_RNTI
Definition gsm_utils.h:206
TLLI_RAND_G_RNTI
@ TLLI_RAND_G_RNTI
Definition gsm_utils.h:207
osmo_dump_gsmtime_c
char * osmo_dump_gsmtime_c(const void *ctx, const struct gsm_time *tm)
Definition gsm_utils.c:920
rach_max_trans_val2raw
static int rach_max_trans_val2raw(int val)
Definition gsm_utils.h:151
gsm_fn2rfn
static uint16_t gsm_fn2rfn(uint32_t fn)
Definition gsm_utils.h:194
rach_tx_integer_raw2val
static uint8_t rach_tx_integer_raw2val(uint8_t raw)
Definition gsm_utils.h:156
gsm_band_parse
enum gsm_band gsm_band_parse(const char *mhz)
Parse string name of a GSM band.
Definition gsm_utils.c:695
gsm_7bit_decode_ussd
int gsm_7bit_decode_ussd(char *decoded, const uint8_t *user_data, uint8_t length) OSMO_DEPRECATED("Use gsm_7bit_decode_n_ussd() instead")
Definition gsm_utils.c:1075
gsm_phys_chan_config
gsm_phys_chan_config
Definition gsm_utils.h:217
GSM_PCHAN_UNKNOWN
@ GSM_PCHAN_UNKNOWN
Definition gsm_utils.h:226
GSM_PCHAN_TCH_F_PDCH
@ GSM_PCHAN_TCH_F_PDCH
Definition gsm_utils.h:225
GSM_PCHAN_SDCCH8_SACCH8C_CBCH
@ GSM_PCHAN_SDCCH8_SACCH8C_CBCH
Definition gsm_utils.h:228
GSM_PCHAN_CCCH
@ GSM_PCHAN_CCCH
Definition gsm_utils.h:219
GSM_PCHAN_NONE
@ GSM_PCHAN_NONE
Definition gsm_utils.h:218
GSM_PCHAN_TCH_H
@ GSM_PCHAN_TCH_H
Definition gsm_utils.h:222
GSM_PCHAN_SDCCH8_SACCH8C
@ GSM_PCHAN_SDCCH8_SACCH8C
Definition gsm_utils.h:223
GSM_PCHAN_OSMO_DYN
@ GSM_PCHAN_OSMO_DYN
Definition gsm_utils.h:229
_GSM_PCHAN_MAX
@ _GSM_PCHAN_MAX
Definition gsm_utils.h:230
GSM_PCHAN_TCH_F
@ GSM_PCHAN_TCH_F
Definition gsm_utils.h:221
GSM_PCHAN_PDCH
@ GSM_PCHAN_PDCH
Definition gsm_utils.h:224
GSM_PCHAN_CCCH_SDCCH4
@ GSM_PCHAN_CCCH_SDCCH4
Definition gsm_utils.h:220
GSM_PCHAN_CCCH_SDCCH4_CBCH
@ GSM_PCHAN_CCCH_SDCCH4_CBCH
Definition gsm_utils.h:227
gsm_arfcn2band_rc
int gsm_arfcn2band_rc(uint16_t arfcn, enum gsm_band *band)
Resolve GSM band from ARFCN.
Definition gsm_utils.c:730
gsm_septet_encode
int gsm_septet_encode(uint8_t *result, const char *data)
Encode a ASCII characterrs as 7-bit GSM alphabet (TS 03.38).
Definition gsm_utils.c:289
ms_cm3_a5n_support
static int ms_cm3_a5n_support(uint8_t *cm3, unsigned n)
Definition gsm_utils.h:139
gsm_septet_pack
int use gsm_septet_pack() instead.")
dbm2rxlev
uint8_t dbm2rxlev(int dbm)
Convert RF signal level in dBm to TS 05.08 RxLev (TS 05.08 Chapter 8.1.4).
Definition gsm_utils.c:658
ms_pwr_ctl_lvl
int ms_pwr_ctl_lvl(enum gsm_band band, unsigned int dbm)
determine power control level for given dBm value, as indicated by the tables in chapter 4....
Definition gsm_utils.c:554
gsm_chan_t_name
static const char * gsm_chan_t_name(enum gsm_chan_t val)
Definition gsm_utils.h:249
gsm_7bit_encode_ussd
int gsm_7bit_encode_ussd(uint8_t *result, const char *data, int *octets_written) OSMO_DEPRECATED("Use gsm_7bit_encode_n_ussd() instead")
Definition gsm_utils.c:1088
gsm_gsmtime2fn
uint32_t gsm_gsmtime2fn(const struct gsm_time *time)
Encode decoded gsm_time to Frame Number.
Definition gsm_utils.c:889
osmo_get_rand_id
int osmo_get_rand_id(uint8_t *out, size_t len)
Generate random identifier We use /dev/urandom (default when GRND_RANDOM flag is not set).
Definition gsm_utils.c:452
gsm_7bit_encode
int gsm_7bit_encode(uint8_t *result, const char *data) OSMO_DEPRECATED("Use gsm_7bit_encode_n() instead")
Definition gsm_utils.c:1081
gsm_band_name
const char * gsm_band_name(enum gsm_band band)
Return string name of a given GSM Band.
Definition gsm_utils.c:671
gsm_band
gsm_band
Definition gsm_utils.h:49
GSM_BAND_480
@ GSM_BAND_480
Definition gsm_utils.h:55
GSM_BAND_1800
@ GSM_BAND_1800
Definition gsm_utils.h:52
GSM_BAND_900
@ GSM_BAND_900
Definition gsm_utils.h:51
GSM_BAND_850
@ GSM_BAND_850
Definition gsm_utils.h:50
GSM_BAND_750
@ GSM_BAND_750
Definition gsm_utils.h:56
GSM_BAND_1900
@ GSM_BAND_1900
Definition gsm_utils.h:53
GSM_BAND_810
@ GSM_BAND_810
Definition gsm_utils.h:57
GSM_BAND_450
@ GSM_BAND_450
Definition gsm_utils.h:54
gsm_7bit_decode
int gsm_7bit_decode(char *decoded, const uint8_t *user_data, uint8_t length) OSMO_DEPRECATED("Use gsm_7bit_decode_n() instead")
Definition gsm_utils.c:1066
gprs_tmsi2tlli
uint32_t gprs_tmsi2tlli(uint32_t p_tmsi, enum gprs_tlli_type type)
Determine TLLI from P-TMSI.
Definition gsm_utils.c:1047
gsm_7bit_decode_n_ussd
int gsm_7bit_decode_n_ussd(char *decoded, size_t n, const uint8_t *user_data, uint8_t length)
Decode a sequence of 7 bit characters (USSD encoding).
Definition gsm_utils.c:268
ms_class_gmsk_dbm
int ms_class_gmsk_dbm(enum gsm_band band, int ms_class)
Convert power class to dBm according to GSM TS 05.05.
Definition gsm_utils.c:509
rxlev2dbm
int rxlev2dbm(uint8_t rxlev)
Convert TS 05.08 RxLev to dBm (TS 05.08 Chapter 8.1.4).
Definition gsm_utils.c:647
gsm_7bit_encode_n
int gsm_7bit_encode_n(uint8_t *result, size_t n, const char *data, int *octets_written)
Encode a text string into GSM 03.38 encoded 7 bit characters.
Definition gsm_utils.c:382
gsm_chan_t
gsm_chan_t
Definition gsm_utils.h:236
GSM_LCHAN_TCH_H
@ GSM_LCHAN_TCH_H
Definition gsm_utils.h:240
GSM_LCHAN_SDCCH
@ GSM_LCHAN_SDCCH
Definition gsm_utils.h:238
GSM_LCHAN_TCH_F
@ GSM_LCHAN_TCH_F
Definition gsm_utils.h:239
GSM_LCHAN_UNKNOWN
@ GSM_LCHAN_UNKNOWN
Definition gsm_utils.h:241
GSM_LCHAN_PDTCH
@ GSM_LCHAN_PDTCH
Definition gsm_utils.h:243
GSM_LCHAN_CBCH
@ GSM_LCHAN_CBCH
Definition gsm_utils.h:244
GSM_LCHAN_NONE
@ GSM_LCHAN_NONE
Definition gsm_utils.h:237
_GSM_LCHAN_MAX
@ _GSM_LCHAN_MAX
Definition gsm_utils.h:245
GSM_LCHAN_CCCH
@ GSM_LCHAN_CCCH
Definition gsm_utils.h:242
osmo_rat_type_names
const struct value_string osmo_rat_type_names[]
Definition gsm_utils.c:1101
gsm_7bit_encode_oct
int gsm_7bit_encode_oct(uint8_t *result, const char *data, int *octets_written) OSMO_DEPRECATED("Use gsm_7bit_encode_n() instead")
Definition gsm_utils.c:1094
gsm_7bit_encode_n_ussd
int gsm_7bit_encode_n_ussd(uint8_t *result, size_t n, const char *data, int *octets_written)
Encode a text string into GSM 03.38 encoded 7 bit characters (USSD encoding).
Definition gsm_utils.c:426
gsm_arfcn2band
enum gsm_band gsm_arfcn2band(uint16_t arfcn) OSMO_DEPRECATED("Use gsm_arfcn2band_rc() instead")
Resolve GSM band from ARFCN, aborts process on invalid ARFCN.
Definition gsm_utils.c:772
osmo_rat_type
osmo_rat_type
Definition gsm_utils.h:262
OSMO_RAT_UTRAN_IU
@ OSMO_RAT_UTRAN_IU
Definition gsm_utils.h:265
OSMO_RAT_COUNT
@ OSMO_RAT_COUNT
Definition gsm_utils.h:269
OSMO_RAT_EUTRAN_SGS
@ OSMO_RAT_EUTRAN_SGS
Definition gsm_utils.h:266
OSMO_RAT_UNKNOWN
@ OSMO_RAT_UNKNOWN
Definition gsm_utils.h:263
OSMO_RAT_GERAN_A
@ OSMO_RAT_GERAN_A
Definition gsm_utils.h:264
gprs_tlli2tmsi
uint32_t gprs_tlli2tmsi(uint32_t tlli)
Determine P-TMSI from foreign and local TLLIs.
Definition gsm_utils.c:1027
ms_cm2_a5n_support
static int ms_cm2_a5n_support(uint8_t *cm2, unsigned n)
Definition gsm_utils.h:127
rach_max_trans_raw2val
static int rach_max_trans_raw2val(int raw)
Definition gsm_utils.h:152
gsm_arfcn2freq10
uint16_t gsm_arfcn2freq10(uint16_t arfcn, int uplink)
Convert an ARFCN to the frequency in MHz * 10.
Definition gsm_utils.c:807
osmo_dump_gsmtime
char * osmo_dump_gsmtime(const struct gsm_time *tm)
Definition gsm_utils.c:914
gsm_7bit_decode_n_hdr
int gsm_7bit_decode_n_hdr(char *decoded, size_t n, const uint8_t *user_data, uint8_t length, uint8_t ud_hdr_ind)
TS 03.38 7-bit Character unpacking (6.2.1).
Definition gsm_utils.c:204
gsm_rfn2fn
uint32_t gsm_rfn2fn(uint16_t rfn, uint32_t curr_fn)
Definition gsm_utils.c:929
GSM_RFN_MODULUS
#define GSM_RFN_MODULUS
Definition gsm_utils.h:192
osmo_dump_gsmtime_buf
char * osmo_dump_gsmtime_buf(char *buf, size_t buf_len, const struct gsm_time *tm)
Definition gsm_utils.c:906
gsm_get_octet_len
uint8_t gsm_get_octet_len(const uint8_t sept_len)
Compute number of octets from number of septets.
Definition gsm_utils.c:189
osmo_rat_type_name
static const char * osmo_rat_type_name(enum osmo_rat_type val)
Definition gsm_utils.h:273
ms_pwr_dbm
int ms_pwr_dbm(enum gsm_band band, uint8_t lvl)
Convert TS 05.05 power level to absolute dBm value.
Definition gsm_utils.c:606
gsm_septets2octets
int gsm_septets2octets(uint8_t *result, const uint8_t *rdata, uint8_t septet_len, uint8_t padding) OSMO_DEPRECATED("This function is unable to handle more than 255 septets
type
uint8_t type
Definition gsm_08_08.h:0
arfcn
uint16_t arfcn
time
char time[12]
Definition ipaccess.h:7
gsm_time
Definition gsm_utils.h:41
gsm_time::t2
uint8_t t2
Definition gsm_utils.h:44
gsm_time::t1
uint16_t t1
Definition gsm_utils.h:43
gsm_time::tc
uint8_t tc
Definition gsm_utils.h:46
gsm_time::fn
uint32_t fn
Definition gsm_utils.h:42
gsm_time::t3
uint8_t t3
Definition gsm_utils.h:45
value_string
utils.h