| Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame^] | 1 | /* 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> |
| 5 | * (C) 2009 by Harald Welte <laforge@gnumonks.org> |
| 6 | * |
| 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 <stdint.h> |
| 29 | |
| 30 | enum 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 | |
| 41 | int gsm_7bit_decode(char *decoded, const uint8_t *user_data, uint8_t length); |
| 42 | int gsm_7bit_encode(uint8_t *result, const char *data); |
| 43 | |
| 44 | int ms_pwr_ctl_lvl(enum gsm_band band, unsigned int dbm); |
| 45 | int ms_pwr_dbm(enum gsm_band band, uint8_t lvl); |
| 46 | |
| 47 | /* According to TS 08.05 Chapter 8.1.4 */ |
| 48 | int rxlev2dbm(uint8_t rxlev); |
| 49 | uint8_t dbm2rxlev(int dbm); |
| 50 | |
| 51 | /* According to GSM 04.08 Chapter 10.5.2.29 */ |
| 52 | static inline int rach_max_trans_val2raw(int val) { return (val >> 1) & 3; } |
| 53 | static inline int rach_max_trans_raw2val(int raw) { |
| 54 | const int tbl[4] = { 1, 2, 4, 7 }; |
| 55 | return tbl[raw & 3]; |
| 56 | } |
| 57 | |
| 58 | void generate_backtrace(); |
| 59 | #endif |