77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/* Test cases for tx_control.c Timing Advance Computation */
|
|
|
|
/* (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
|
|
* All Rights Reserved
|
|
*
|
|
* Author: Philipp Maier
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation; either version 3 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 Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <osmocom/core/talloc.h>
|
|
#include <osmocom/core/application.h>
|
|
#include <osmo-bts/logging.h>
|
|
#include <osmo-bts/gsm_data.h>
|
|
#include <osmo-bts/ta_control.h>
|
|
#include <osmo-bts/bts_trx.h>
|
|
|
|
void lchan_ms_ta_ctrl_test(int16_t toa256_start, unsigned int steps)
|
|
{
|
|
struct gsm_bts_trx trx = { };
|
|
struct gsm_bts_trx_ts ts = { .trx = &trx };
|
|
struct gsm_lchan lchan = { .ts = &ts };
|
|
unsigned int i;
|
|
uint8_t rqd_ta_after;
|
|
uint8_t rqd_ta_before;
|
|
int16_t toa256 = toa256_start;
|
|
|
|
printf("toa256_start = %u / 256 = %u, steps = %u\n", toa256_start,
|
|
toa256_start / 256, steps);
|
|
|
|
for (i = 0; i < steps; i++) {
|
|
printf("Step #%u\n", i);
|
|
printf(" lchan.ta_ctrl.current (before) = %u\n", lchan.ta_ctrl.current);
|
|
printf(" toa256 (before) = %u / 256 = %u\n", toa256,
|
|
toa256 / 256);
|
|
|
|
rqd_ta_before = lchan.ta_ctrl.current;
|
|
|
|
lchan_ms_ta_ctrl(&lchan, rqd_ta_before, toa256);
|
|
|
|
rqd_ta_after = lchan.ta_ctrl.current;
|
|
toa256 -= (rqd_ta_after - rqd_ta_before) * 256;
|
|
|
|
printf(" lchan.ta_ctrl.current (after) = %u\n", lchan.ta_ctrl.current);
|
|
printf(" toa256 (after) = %u / 256 = %u\n", toa256,
|
|
toa256 / 256);
|
|
}
|
|
|
|
printf("Done.\n");
|
|
printf("\n");
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
void *tall_bts_ctx;
|
|
|
|
tall_bts_ctx = talloc_named_const(NULL, 1, "OsmoBTS context");
|
|
osmo_init_logging2(tall_bts_ctx, &bts_log_info);
|
|
|
|
lchan_ms_ta_ctrl_test(16 * 256, 20);
|
|
lchan_ms_ta_ctrl_test(4000, 50);
|
|
lchan_ms_ta_ctrl_test(12345, 50);
|
|
}
|