248 lines
6.9 KiB
C
248 lines
6.9 KiB
C
/* Test cases for tx_power.c Transmit Power Computation */
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/* (C) 2017 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdint.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/core/application.h>
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#include <osmo-bts/gsm_data.h>
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#include <osmo-bts/bts.h>
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#include <osmo-bts/logging.h>
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#include <osmo-bts/tx_power.h>
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static const struct trx_power_params tpp_1002 = {
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.trx_p_max_out_mdBm = to_mdB(23),
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.p_total_tgt_mdBm = to_mdB(23),
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.p_total_cur_mdBm = 0,
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.thermal_attenuation_mdB = 0,
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.user_gain_mdB = 0,
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.pa = {
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.nominal_gain_mdB = 0,
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},
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.user_pa = {
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.nominal_gain_mdB = 0,
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},
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.ramp = {
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.max_initial_pout_mdBm = to_mdB(23),
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.step_size_mdB = to_mdB(2),
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.step_interval_sec = 1,
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},
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};
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static const struct trx_power_params tpp_1020 = {
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.trx_p_max_out_mdBm = to_mdB(23),
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.p_total_tgt_mdBm = to_mdB(33),
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.p_total_cur_mdBm = 0,
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.thermal_attenuation_mdB = 0,
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.user_gain_mdB = 0,
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.pa = {
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.nominal_gain_mdB = to_mdB(10),
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},
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.user_pa = {
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.nominal_gain_mdB = 0,
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},
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.ramp = {
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.max_initial_pout_mdBm = to_mdB(0),
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.step_size_mdB = to_mdB(2),
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.step_interval_sec = 1,
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},
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};
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static const struct trx_power_params tpp_1100 = {
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.trx_p_max_out_mdBm = to_mdB(23),
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.p_total_tgt_mdBm = to_mdB(40),
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.p_total_cur_mdBm = 0,
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.thermal_attenuation_mdB = 0,
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.user_gain_mdB = 0,
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.pa = {
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.nominal_gain_mdB = to_mdB(17),
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},
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.user_pa = {
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.nominal_gain_mdB = 0,
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},
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.ramp = {
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.max_initial_pout_mdBm = to_mdB(0),
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.step_size_mdB = to_mdB(2),
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.step_interval_sec = 1,
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},
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};
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static const struct trx_power_params tpp_2050 = {
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.trx_p_max_out_mdBm = to_mdB(37),
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.p_total_tgt_mdBm = to_mdB(37),
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.p_total_cur_mdBm = 0,
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.thermal_attenuation_mdB = 0,
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.user_gain_mdB = 0,
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.pa = {
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.nominal_gain_mdB = 0,
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},
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.user_pa = {
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.nominal_gain_mdB = 0,
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},
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.ramp = {
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.max_initial_pout_mdBm = to_mdB(0),
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.step_size_mdB = to_mdB(2),
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.step_interval_sec = 1,
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},
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};
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static void test_sbts1002(struct gsm_bts_trx *trx)
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{
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printf("Testing tx_power calculation for sysmoBTS 1002\n");
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trx->power_params = tpp_1002;
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trx->max_power_red = 0;
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OSMO_ASSERT(power_ramp_initial_power_mdBm(trx) == to_mdB(23));
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OSMO_ASSERT(get_p_max_out_mdBm(trx) == to_mdB(23));
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/* at max_power_red = 0, we expect full 23dBm */
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OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(23));
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trx->max_power_red = 2;
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/* at max_power_red = 2, we expect 21dBm */
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OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(21));
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/* at 1 step (of 2dB), we expect full 23-2-2=19 dBm */
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OSMO_ASSERT(get_p_target_mdBm(trx, 1) == to_mdB(19));
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/* at 2 steps (= 4dB), we expect 23-2-4=17*/
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OSMO_ASSERT(get_p_trxout_target_mdBm(trx, 2) == to_mdB(17));
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}
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static void test_sbts1020(struct gsm_bts_trx *trx)
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{
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printf("Testing tx_power calculation for sysmoBTS 1020\n");
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trx->power_params = tpp_1020;
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trx->max_power_red = 0;
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OSMO_ASSERT(power_ramp_initial_power_mdBm(trx) == to_mdB(-10));
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OSMO_ASSERT(get_p_max_out_mdBm(trx) == to_mdB(33));
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/* at max_power_red = 0, we expect full 33dBm */
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OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(33));
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trx->max_power_red = 2;
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/* at max_power_red = 2, we expect 31dBm */
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OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(31));
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/* at 1 step (of 2dB), we expect full 33-2-2=29 dBm */
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OSMO_ASSERT(get_p_target_mdBm(trx, 1) == to_mdB(29));
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/* at 2 steps (= 4dB), we expect 33-2-4-10=17*/
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OSMO_ASSERT(get_p_trxout_target_mdBm(trx, 2) == to_mdB(17));
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}
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static void test_sbts1100(struct gsm_bts_trx *trx)
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{
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printf("Testing tx_power calculation for sysmoBTS 1100\n");
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trx->power_params = tpp_1100;
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trx->max_power_red = 0;
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OSMO_ASSERT(power_ramp_initial_power_mdBm(trx) == to_mdB(-17));
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OSMO_ASSERT(get_p_max_out_mdBm(trx) == to_mdB(40));
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/* at max_power_red = 0, we expect full 33dBm */
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OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(40));
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trx->max_power_red = 2;
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/* at max_power_red = 2, we expect 38dBm */
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OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(38));
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/* at 1 step (of 2dB), we expect full 40-2-2=36 dBm */
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OSMO_ASSERT(get_p_target_mdBm(trx, 1) == to_mdB(36));
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/* at 2 steps (= 4dB), we expect 40-2-4-17=17*/
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OSMO_ASSERT(get_p_trxout_target_mdBm(trx, 2) == to_mdB(17));
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}
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static void test_sbts2050(struct gsm_bts_trx *trx)
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{
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printf("Testing tx_power calculation for sysmoBTS 2050\n");
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trx->power_params = tpp_2050;
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trx->max_power_red = 0;
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OSMO_ASSERT(power_ramp_initial_power_mdBm(trx) == to_mdB(0));
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OSMO_ASSERT(get_p_max_out_mdBm(trx) == to_mdB(37));
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/* at max_power_red = 0, we expect full 37dBm */
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OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(37));
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trx->max_power_red = 2;
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/* at max_power_red = 2, we expect 35dBm */
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OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(35));
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/* at 1 step (of 2dB), we expect full 37-2-2=33 dBm */
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OSMO_ASSERT(get_p_target_mdBm(trx, 1) == to_mdB(33));
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/* at 2 steps (= 4dB), we expect 37-2-4=31dBm */
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OSMO_ASSERT(get_p_trxout_target_mdBm(trx, 2) == to_mdB(31));
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}
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int bts_model_change_power(struct gsm_bts_trx *trx, int p_trxout_mdBm)
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{
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struct trx_power_params *tpp = &trx->power_params;
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printf("CHANGE_POWER(%d)\n", p_trxout_mdBm);
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if (tpp->ramp.attenuation_mdB == 0)
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exit(0);
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power_trx_change_compl(trx, p_trxout_mdBm);
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return 0;
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}
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static void test_power_ramp(struct gsm_bts_trx *trx, int dBm)
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{
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printf("Testing tx_power ramping for sysmoBTS 1020\n");
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trx->power_params = tpp_1020;
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trx->max_power_red = 0;
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power_ramp_start(trx, to_mdB(dBm), 0);
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}
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int main(int argc, char **argv)
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{
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static struct gsm_bts *bts;
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struct gsm_bts_trx *trx;
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void *tall_bts_ctx;
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tall_bts_ctx = talloc_named_const(NULL, 1, "OsmoBTS context");
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msgb_talloc_ctx_init(tall_bts_ctx, 0);
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osmo_init_logging2(tall_bts_ctx, &bts_log_info);
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osmo_stderr_target->categories[DL1C].loglevel = LOGL_DEBUG;
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log_set_print_filename(osmo_stderr_target, 0);
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bts = gsm_bts_alloc(tall_bts_ctx, 0);
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if (!bts) {
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fprintf(stderr, "Failed to create BTS structure\n");
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exit(1);
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}
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trx = gsm_bts_trx_alloc(bts);
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if (!trx) {
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fprintf(stderr, "Failed to TRX structure\n");
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exit(1);
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}
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if (bts_init(bts) < 0) {
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fprintf(stderr, "unable to to open bts\n");
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exit(1);
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}
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test_sbts1002(trx);
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test_sbts1020(trx);
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test_sbts1100(trx);
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test_sbts2050(trx);
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/* test error case / excess power (40 dBm is too much) */
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test_power_ramp(trx, 40);
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/* test actaul ramping to full 33 dBm */
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test_power_ramp(trx, 33);
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while (1) {
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osmo_select_main(0);
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}
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}
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