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Holger Freyther76c95692009-02-17 20:31:30 +00001/* GSM utility functions, e.g. coding and decoding */
2/*
3 * (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de>
4 * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
Harald Welte7e310b12009-03-30 20:56:32 +00005 * (C) 2009 by Harald Welte <laforge@gnumonks.org>
Holger Freyther76c95692009-02-17 20:31:30 +00006 *
7 * All Rights Reserved
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 *
23 */
24
25#ifndef GSM_UTILS_H
26#define GSM_UTILS_H
27
28#include <sys/types.h>
29
Harald Weltedfe6c7d2010-02-20 16:24:02 +010030enum gsm_band {
31 GSM_BAND_850 = 1,
32 GSM_BAND_900 = 2,
33 GSM_BAND_1800 = 4,
34 GSM_BAND_1900 = 8,
35 GSM_BAND_450 = 0x10,
36 GSM_BAND_480 = 0x20,
37 GSM_BAND_750 = 0x40,
38 GSM_BAND_810 = 0x80,
39};
40
Harald Welte7e310b12009-03-30 20:56:32 +000041int gsm_7bit_decode(char *decoded, const u_int8_t *user_data, u_int8_t length);
42int gsm_7bit_encode(u_int8_t *result, const char *data);
Holger Freyther76c95692009-02-17 20:31:30 +000043
Harald Welte66b6a8d2009-08-09 14:45:18 +020044int ms_pwr_ctl_lvl(enum gsm_band band, unsigned int dbm);
45int ms_pwr_dbm(enum gsm_band band, u_int8_t lvl);
Holger Hans Peter Freyther25f30ba2009-10-28 09:12:43 +010046
Harald Welte4bb47382009-12-12 15:37:54 +010047/* According to TS 08.05 Chapter 8.1.4 */
48int rxlev2dbm(u_int8_t rxlev);
49u_int8_t dbm2rxlev(int dbm);
50
Sylvain Munaut4010f1e2009-12-22 13:43:26 +010051/* According to GSM 04.08 Chapter 10.5.2.29 */
52static inline int rach_max_trans_val2raw(int val) { return (val >> 1) & 3; }
53static inline int rach_max_trans_raw2val(int raw) {
54 const int tbl[4] = { 1, 2, 4, 7 };
55 return tbl[raw & 3];
56}
57
Holger Hans Peter Freyther25f30ba2009-10-28 09:12:43 +010058void generate_backtrace();
Holger Freyther76c95692009-02-17 20:31:30 +000059#endif