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/* GSM utility functions, e.g. coding and decoding */
/*
* (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de>
* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2009 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#ifndef GSM_UTILS_H
#define GSM_UTILS_H
#include <stdint.h>
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,
};
int gsm_7bit_decode(char *decoded, const uint8_t *user_data, uint8_t length);
int gsm_7bit_encode(uint8_t *result, const char *data);
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 08.05 Chapter 8.1.4 */
int rxlev2dbm(uint8_t rxlev);
uint8_t dbm2rxlev(int dbm);
/* 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];
}
void generate_backtrace();
#endif
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