blob: 480c76073c74cfa56b3327759d9b892bc644ee09 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/* APC (Automatic Power Control) Implementation */
/* (C) 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.
*
* 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.
*
*/
#include <errno.h>
#include <osmocom/core/utils.h>
#include <osmocom/gsm/gsm_utils.h>
#include <layer1/apc.h>
/* calibration table defined in board file */
extern const int16_t dbm2apc_gsm900[];
extern const int dbm2apc_gsm900_max;
/* determine the AUXAPC value by the Tx Power Level */
int16_t apc_tx_dbm2auxapc(enum gsm_band band, int8_t dbm)
{
if (dbm < 0)
return -ERANGE;
/* FIXME: offsets for different bands! */
if (dbm > dbm2apc_gsm900_max)
dbm = dbm2apc_gsm900_max;
return dbm2apc_gsm900[dbm];
}
/* determine the AUXAPC value by the Tx Power Level */
int16_t apc_tx_pwrlvl2auxapc(enum gsm_band band, uint8_t lvl)
{
/* convert tx power level to dBm */
int dbm = ms_pwr_dbm(band, lvl);
if (dbm < 0)
return dbm;
return apc_tx_dbm2auxapc(band, dbm);
}
|
