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Diffstat (limited to 'tests/tx_power/tx_power_test.c')
| -rw-r--r-- | tests/tx_power/tx_power_test.c | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/tests/tx_power/tx_power_test.c b/tests/tx_power/tx_power_test.c new file mode 100644 index 00000000..d6573620 --- /dev/null +++ b/tests/tx_power/tx_power_test.c @@ -0,0 +1,239 @@ +/* Test cases for tx_power.c Transmit Power Computation */ + +/* (C) 2017 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 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 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/utils.h> +#include <osmocom/core/talloc.h> +#include <osmocom/core/application.h> + +#include <osmo-bts/gsm_data.h> +#include <osmo-bts/bts.h> +#include <osmo-bts/logging.h> +#include <osmo-bts/tx_power.h> + + +static const struct trx_power_params tpp_1002 = { + .trx_p_max_out_mdBm = to_mdB(23), + .p_total_tgt_mdBm = to_mdB(23), + .p_total_cur_mdBm = 0, + .thermal_attenuation_mdB = 0, + .user_gain_mdB = 0, + .pa = { + .nominal_gain_mdB = 0, + }, + .user_pa = { + .nominal_gain_mdB = 0, + }, + .ramp = { + .step_size_mdB = to_mdB(2), + .step_interval_sec = 1, + }, +}; + +static const struct trx_power_params tpp_1020 = { + .trx_p_max_out_mdBm = to_mdB(23), + .p_total_tgt_mdBm = to_mdB(33), + .p_total_cur_mdBm = 0, + .thermal_attenuation_mdB = 0, + .user_gain_mdB = 0, + .pa = { + .nominal_gain_mdB = to_mdB(10), + }, + .user_pa = { + .nominal_gain_mdB = 0, + }, + .ramp = { + .step_size_mdB = to_mdB(2), + .step_interval_sec = 1, + }, +}; + +static const struct trx_power_params tpp_1100 = { + .trx_p_max_out_mdBm = to_mdB(23), + .p_total_tgt_mdBm = to_mdB(40), + .p_total_cur_mdBm = 0, + .thermal_attenuation_mdB = 0, + .user_gain_mdB = 0, + .pa = { + .nominal_gain_mdB = to_mdB(17), + }, + .user_pa = { + .nominal_gain_mdB = 0, + }, + .ramp = { + .step_size_mdB = to_mdB(2), + .step_interval_sec = 1, + }, +}; + +static const struct trx_power_params tpp_2050 = { + .trx_p_max_out_mdBm = to_mdB(37), + .p_total_tgt_mdBm = to_mdB(37), + .p_total_cur_mdBm = 0, + .thermal_attenuation_mdB = 0, + .user_gain_mdB = 0, + .pa = { + .nominal_gain_mdB = 0, + }, + .user_pa = { + .nominal_gain_mdB = 0, + }, + .ramp = { + .step_size_mdB = to_mdB(2), + .step_interval_sec = 1, + }, +}; + +static void test_sbts1002(struct gsm_bts_trx *trx) +{ + printf("Testing tx_power calculation for sysmoBTS 1002\n"); + trx->power_params = tpp_1002; + trx->max_power_red = 0; + OSMO_ASSERT(get_p_max_out_mdBm(trx) == to_mdB(23)); + /* at max_power_red = 0, we expect full 23dBm */ + OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(23)); + trx->max_power_red = 2; + /* at max_power_red = 2, we expect 21dBm */ + OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(21)); + /* at 1 step (of 2dB), we expect full 23-2-2=19 dBm */ + OSMO_ASSERT(get_p_target_mdBm(trx, 1) == to_mdB(19)); + /* at 2 steps (= 4dB), we expect 23-2-4=17*/ + OSMO_ASSERT(get_p_trxout_target_mdBm(trx, 2) == to_mdB(17)); +} + +static void test_sbts1020(struct gsm_bts_trx *trx) +{ + printf("Testing tx_power calculation for sysmoBTS 1020\n"); + trx->power_params = tpp_1020; + trx->max_power_red = 0; + OSMO_ASSERT(get_p_max_out_mdBm(trx) == to_mdB(33)); + /* at max_power_red = 0, we expect full 33dBm */ + OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(33)); + trx->max_power_red = 2; + /* at max_power_red = 2, we expect 31dBm */ + OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(31)); + /* at 1 step (of 2dB), we expect full 33-2-2=29 dBm */ + OSMO_ASSERT(get_p_target_mdBm(trx, 1) == to_mdB(29)); + /* at 2 steps (= 4dB), we expect 33-2-4-10=17*/ + OSMO_ASSERT(get_p_trxout_target_mdBm(trx, 2) == to_mdB(17)); +} + + +static void test_sbts1100(struct gsm_bts_trx *trx) +{ + printf("Testing tx_power calculation for sysmoBTS 1100\n"); + trx->power_params = tpp_1100; + trx->max_power_red = 0; + OSMO_ASSERT(get_p_max_out_mdBm(trx) == to_mdB(40)); + /* at max_power_red = 0, we expect full 33dBm */ + OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(40)); + trx->max_power_red = 2; + /* at max_power_red = 2, we expect 38dBm */ + OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(38)); + /* at 1 step (of 2dB), we expect full 40-2-2=36 dBm */ + OSMO_ASSERT(get_p_target_mdBm(trx, 1) == to_mdB(36)); + /* at 2 steps (= 4dB), we expect 40-2-4-17=17*/ + OSMO_ASSERT(get_p_trxout_target_mdBm(trx, 2) == to_mdB(17)); +} + +static void test_sbts2050(struct gsm_bts_trx *trx) +{ + printf("Testing tx_power calculation for sysmoBTS 2050\n"); + trx->power_params = tpp_2050; + trx->max_power_red = 0; + OSMO_ASSERT(get_p_max_out_mdBm(trx) == to_mdB(37)); + /* at max_power_red = 0, we expect full 37dBm */ + OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(37)); + trx->max_power_red = 2; + /* at max_power_red = 2, we expect 35dBm */ + OSMO_ASSERT(get_p_nominal_mdBm(trx) == to_mdB(35)); + /* at 1 step (of 2dB), we expect full 37-2-2=33 dBm */ + OSMO_ASSERT(get_p_target_mdBm(trx, 1) == to_mdB(33)); + /* at 2 steps (= 4dB), we expect 37-2-4=31dBm */ + OSMO_ASSERT(get_p_trxout_target_mdBm(trx, 2) == to_mdB(31)); +} + +int bts_model_change_power(struct gsm_bts_trx *trx, int p_trxout_mdBm) +{ + struct trx_power_params *tpp = &trx->power_params; + + printf("CHANGE_POWER(%d)\n", p_trxout_mdBm); + + if (tpp->ramp.attenuation_mdB == 0) + exit(0); + + power_trx_change_compl(trx, p_trxout_mdBm); + return 0; +} + +static void test_power_ramp(struct gsm_bts_trx *trx, int dBm) +{ + printf("Testing tx_power ramping for sysmoBTS 1020\n"); + trx->power_params = tpp_1020; + trx->max_power_red = 0; + + power_ramp_start(trx, to_mdB(dBm), 0); +} + +int main(int argc, char **argv) +{ + static struct gsm_bts *bts; + struct gsm_bts_trx *trx; + void *tall_bts_ctx; + + tall_bts_ctx = talloc_named_const(NULL, 1, "OsmoBTS context"); + msgb_talloc_ctx_init(tall_bts_ctx, 0); + + bts_log_init(NULL); + osmo_stderr_target->categories[DL1C].loglevel = LOGL_DEBUG; + log_set_print_filename(osmo_stderr_target, 0); + + bts = gsm_bts_alloc(tall_bts_ctx); + if (!bts) { + fprintf(stderr, "Failed to create BTS structure\n"); + exit(1); + } + trx = gsm_bts_trx_alloc(bts); + if (!trx) { + fprintf(stderr, "Failed to TRX structure\n"); + exit(1); + } + + if (bts_init(bts) < 0) { + fprintf(stderr, "unable to to open bts\n"); + exit(1); + } + + test_sbts1002(trx); + test_sbts1020(trx); + test_sbts1100(trx); + test_sbts2050(trx); + + /* test error case / excess power (40 dBm is too much) */ + test_power_ramp(trx, 40); + /* test actaul ramping to full 33 dBm */ + test_power_ramp(trx, 33); + + while (1) { + osmo_select_main(0); + } +} |