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526 lines
20 KiB
C++
526 lines
20 KiB
C++
/*
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* Copyright 2013-2019 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE 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
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE 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 Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include <srslte/common/test_common.h>
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#include <srslte/common/threads.h>
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#include <srslte/phy/utils/random.h>
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#include <srslte/srslte.h>
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#include <srsue/hdr/phy/phy.h>
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#define CALLBACK(NAME, ...) \
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private: \
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bool received_##NAME = false; \
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\
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public: \
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bool wait_##NAME(uint32_t timeout_ms, bool reset_flag = false) \
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{ \
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std::unique_lock<std::mutex> lock(mutex); \
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std::chrono::system_clock::time_point expire_time = std::chrono::system_clock::now(); \
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expire_time += std::chrono::milliseconds(timeout_ms); \
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bool expired = false; \
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if (reset_flag) { \
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received_##NAME = false; \
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} \
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while (!received_##NAME && !expired) { \
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expired = (cvar.wait_until(lock, expire_time) == std::cv_status::timeout); \
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} \
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if (expired) { \
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log_h.info("Expired " #NAME " waiting\n"); \
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} \
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return received_##NAME; \
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} \
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\
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bool get_received_##NAME() { return received_##NAME; } \
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\
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private: \
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void notify_##NAME(__VA_ARGS__) \
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{ \
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std::unique_lock<std::mutex> lock(mutex); \
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cvar.notify_all(); \
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log_h.info(#NAME " received\n"); \
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received_##NAME = true; \
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}
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class phy_test_bench : public thread
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{
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private:
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// Dummy classes
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class dummy_stack : public srsue::stack_interface_phy_lte
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{
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private:
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srslte::log_filter log_h;
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uint16_t rnti = 0x3c;
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std::mutex mutex;
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std::condition_variable cvar;
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CALLBACK(in_sync)
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CALLBACK(out_of_sync)
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CALLBACK(new_phy_meas)
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CALLBACK(new_grant_ul)
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CALLBACK(new_grant_dl)
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CALLBACK(run_tti)
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public:
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// Local test access methods
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explicit dummy_stack(srslte::logger& logger) : log_h("stack", &logger) {}
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void set_rnti(uint16_t rnti_) { rnti = rnti_; }
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void set_loglevel(std::string& str) { log_h.set_level(str); }
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void in_sync() override { notify_in_sync(); }
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void out_of_sync() override { notify_out_of_sync(); }
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void new_phy_meas(float rsrp, float rsrq, uint32_t tti, int earfcn, int pci) override
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{
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notify_new_phy_meas();
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log_h.info("New measurement earfcn=%d; pci=%d; rsrp=%+.1fdBm; rsrq=%+.1fdB;\n", earfcn, pci, rsrp, rsrq);
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}
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uint16_t get_dl_sched_rnti(uint32_t tti) override { return rnti; }
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uint16_t get_ul_sched_rnti(uint32_t tti) override { return rnti; }
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void new_grant_ul(uint32_t cc_idx, mac_grant_ul_t grant, tb_action_ul_t* action) override { notify_new_grant_ul(); }
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void new_grant_dl(uint32_t cc_idx, mac_grant_dl_t grant, tb_action_dl_t* action) override
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{
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notify_new_grant_dl();
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for (auto& i : action->tb) {
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i.enabled = true;
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}
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}
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void tb_decoded(uint32_t cc_idx, mac_grant_dl_t grant, bool* ack) override {}
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void bch_decoded_ok(uint8_t* payload, uint32_t len) override {}
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void mch_decoded(uint32_t len, bool crc) override {}
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void new_mch_dl(srslte_pdsch_grant_t phy_grant, tb_action_dl_t* action) override {}
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void set_mbsfn_config(uint32_t nof_mbsfn_services) override {}
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void run_tti(const uint32_t tti) override
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{
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notify_run_tti();
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log_h.info("Run TTI %d\n", tti);
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}
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};
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class dummy_radio : public srslte::radio_interface_phy
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{
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private:
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srslte::log_filter log_h;
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std::vector<srslte_ringbuffer_t> ring_buffers;
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float base_srate = 0.0f;
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float tx_srate = 0.0f;
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float rx_srate = 0.0f;
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float rx_gain = 0.0f;
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float tx_freq = 0.0f;
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float rx_freq = 0.0f;
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cf_t* temp_buffer = nullptr;
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uint64_t rx_timestamp = 0;
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std::mutex mutex;
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std::condition_variable cvar;
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srslte_rf_info_t rf_info = {};
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srslte_timestamp_t tx_last_tx = {};
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uint32_t count_late = 0;
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CALLBACK(rx_now)
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CALLBACK(tx)
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CALLBACK(late)
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public:
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dummy_radio(srslte::logger& logger, uint32_t nof_channels, float base_srate_) :
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log_h("radio", &logger),
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ring_buffers(nof_channels),
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base_srate(base_srate_)
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{
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// Create Ring buffers
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for (auto& rb : ring_buffers) {
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if (srslte_ringbuffer_init(&rb, (uint32_t)sizeof(cf_t) * SRSLTE_SF_LEN_MAX * SRSLTE_NOF_SF_X_FRAME)) {
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perror("init softbuffer");
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}
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}
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// Create temporal buffer
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temp_buffer = srslte_vec_cf_malloc(SRSLTE_SF_LEN_MAX * SRSLTE_NOF_SF_X_FRAME);
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if (!temp_buffer) {
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perror("malloc");
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}
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// Set RF Info (in dB)
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rf_info.min_rx_gain = 0.0f;
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rf_info.max_rx_gain = 90.0f;
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rf_info.min_tx_gain = 0.0f;
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rf_info.max_tx_gain = 90.0f;
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}
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~dummy_radio()
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{
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for (auto& rb : ring_buffers) {
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srslte_ringbuffer_free(&rb);
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}
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if (temp_buffer) {
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free(temp_buffer);
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}
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}
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void set_loglevel(std::string& str) { log_h.set_level(str); }
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void write_ring_buffers(cf_t** buffer, uint32_t nsamples)
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{
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for (uint32_t i = 0; i < ring_buffers.size(); i++) {
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int ret = SRSLTE_SUCCESS;
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do {
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if (ret != SRSLTE_SUCCESS) {
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log_h.error("Ring buffer write failed (full). Trying again.\n");
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}
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ret = srslte_ringbuffer_write_timed(&ring_buffers[i], buffer[i], (uint32_t)sizeof(cf_t) * nsamples, 1000);
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} while (ret == SRSLTE_ERROR_TIMEOUT);
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}
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}
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uint32_t get_count_late() { return count_late; }
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bool tx(const uint32_t& radio_idx,
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cf_t** buffer,
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const uint32_t& nof_samples,
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const srslte_timestamp_t& tx_time) override
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{
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bool ret = true;
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notify_tx();
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std::lock_guard<std::mutex> lock(mutex);
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if (!std::isnormal(tx_srate)) {
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count_late++;
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}
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if (srslte_timestamp_compare(&tx_time, &tx_last_tx) < 0) {
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ret = false;
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}
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tx_last_tx = tx_time;
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srslte_timestamp_add(&tx_last_tx, 0, (double)nof_samples / (double)tx_srate);
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return ret;
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}
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void tx_end() override {}
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bool
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rx_now(const uint32_t& radio_idx, cf_t** buffer, const uint32_t& nof_samples, srslte_timestamp_t* rxd_time) override
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{
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notify_rx_now();
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std::lock_guard<std::mutex> lock(mutex);
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auto base_nsamples = (uint32_t)floorf(((float)nof_samples * base_srate) / rx_srate);
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for (uint32_t i = 0; i < ring_buffers.size(); i++) {
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cf_t* buf_ptr = ((buffer[i] != nullptr) && (base_srate == rx_srate)) ? buffer[i] : temp_buffer;
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// Read base srate samples
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int ret = srslte_ringbuffer_read(&ring_buffers[i], buf_ptr, (uint32_t)sizeof(cf_t) * base_nsamples);
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if (ret < 0) {
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log_h.error("Reading ring buffer\n");
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} else {
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log_h.debug("-- %d samples read from ring buffer\n", base_nsamples);
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}
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// Only if baseband buffer is provided
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if (buffer[i]) {
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if (base_srate > rx_srate) {
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// Decimate
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auto decimation = (uint32_t)roundf(base_srate / rx_srate);
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// Perform decimation
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for (uint32_t j = 0, k = 0; j < nof_samples; j++, k += decimation) {
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buffer[i][j] = buf_ptr[k];
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}
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} else if (base_srate < rx_srate) {
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// Interpolate
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auto interpolation = (uint32_t)roundf(rx_srate / base_srate);
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// Perform zero order hold interpolation
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for (uint32_t j = 0, k = 0; j < nof_samples; k++) {
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for (uint32_t c = 0; c < interpolation; c++, j++) {
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buffer[i][j] = buf_ptr[k];
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}
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}
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}
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}
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}
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// Set Rx timestamp
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if (rxd_time) {
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srslte_timestamp_init_uint64(rxd_time, rx_timestamp, (double)base_srate);
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}
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// Update timestamp
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rx_timestamp += base_nsamples;
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return true;
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}
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void set_tx_freq(const uint32_t& radio_idx, const uint32_t& channel_idx, const double& freq) override
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{
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std::unique_lock<std::mutex> lock(mutex);
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tx_freq = (float)freq;
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log_h.info("Set Tx freq to %+.0f MHz.\n", freq * 1.0e-6);
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}
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void set_rx_freq(const uint32_t& radio_idx, const uint32_t& channel_idx, const double& freq) override
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{
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std::unique_lock<std::mutex> lock(mutex);
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rx_freq = (float)freq;
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log_h.info("Set Rx freq to %+.0f MHz.\n", freq * 1.0e-6);
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}
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float set_rx_gain_th(const float& gain) override
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{
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std::unique_lock<std::mutex> lock(mutex);
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rx_gain = srslte_convert_dB_to_amplitude(gain);
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log_h.info("Set Rx gain-th to %+.1f dB (%.6f).\n", gain, rx_gain);
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return srslte_convert_amplitude_to_dB(rx_gain);
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}
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void set_rx_gain(const uint32_t& radio_idx, const float& gain) override
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{
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std::unique_lock<std::mutex> lock(mutex);
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rx_gain = srslte_convert_dB_to_amplitude(gain);
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log_h.info("Set Rx gain to %+.1f dB (%.6f).\n", gain, rx_gain);
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}
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void set_tx_srate(const uint32_t& radio_idx, const double& srate) override
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{
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std::unique_lock<std::mutex> lock(mutex);
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tx_srate = (float)srate;
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log_h.info("Set Tx sampling rate to %+.3f MHz.\n", srate * 1.0e-6);
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}
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void set_rx_srate(const uint32_t& radio_idx, const double& srate) override
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{
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std::unique_lock<std::mutex> lock(mutex);
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rx_srate = (float)srate;
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log_h.info("Set Rx sampling rate to %+.3f MHz.\n", srate * 1.0e-6);
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}
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float get_rx_gain(const uint32_t& radio_idx) override
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{
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std::unique_lock<std::mutex> lock(mutex);
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return srslte_convert_amplitude_to_dB(rx_gain);
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}
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double get_freq_offset() override { return 0; }
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double get_tx_freq(const uint32_t& radio_idx) override { return tx_freq; }
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double get_rx_freq(const uint32_t& radio_idx) override { return rx_freq; }
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float get_max_tx_power() override { return 0; }
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float get_tx_gain_offset() override { return 0; }
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float get_rx_gain_offset() override { return 0; }
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bool is_continuous_tx() override { return false; }
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bool get_is_start_of_burst(const uint32_t& radio_idx) override { return false; }
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bool is_init() override { return false; }
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void reset() override {}
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srslte_rf_info_t* get_info(const uint32_t& radio_idx) override { return &rf_info; }
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};
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// Common instances
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srslte::logger_stdout main_logger;
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srslte::log_filter log_h;
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// Dummy instances
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dummy_stack stack;
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dummy_radio radio;
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// Phy Instances
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std::unique_ptr<srsue::phy> phy;
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// eNb
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srslte_enb_dl_t enb_dl = {};
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cf_t* enb_dl_buffer[SRSLTE_MAX_PORTS] = {};
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srslte_dl_sf_cfg_t dl_sf_cfg = {};
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uint64_t sfn = 0; // System Frame Number
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uint32_t sf_len = 0;
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// Control atributes
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bool running = false;
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std::mutex mutex;
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std::condition_variable cvar;
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public:
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phy_test_bench(const srsue::phy_args_t& phy_args, const srslte_cell_t& cell) :
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stack(main_logger),
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radio(main_logger, cell.nof_ports, srslte_sampling_freq_hz(cell.nof_prb)),
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thread("phy_test_bench"),
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log_h("test bench")
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{
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// Deduce physical attributes
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sf_len = SRSLTE_SF_LEN_PRB(cell.nof_prb);
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// Initialise UE
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phy = std::unique_ptr<srsue::phy>(new srsue::phy(&main_logger));
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phy->init(phy_args, &stack, &radio);
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// Initialise DL baseband buffers
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for (uint32_t i = 0; i < phy_args.nof_rx_ant; i++) {
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enb_dl_buffer[i] = srslte_vec_cf_malloc(sf_len);
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if (!enb_dl_buffer[i]) {
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perror("malloc");
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}
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}
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// Initialise eNb DL
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srslte_enb_dl_init(&enb_dl, enb_dl_buffer, SRSLTE_MAX_PRB);
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srslte_enb_dl_set_cell(&enb_dl, cell);
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// Wait PHY init to end
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phy->wait_initialize();
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}
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~phy_test_bench()
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{
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// Free eNb DL object
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srslte_enb_dl_free(&enb_dl);
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// Free buffers
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for (auto& buf : enb_dl_buffer) {
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if (buf) {
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free(buf);
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buf = nullptr;
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}
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}
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}
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dummy_stack* get_stack() { return &stack; }
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dummy_radio* get_radio() { return &radio; }
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srsue::phy_interface_rrc_lte* get_phy_interface_rrc() { return phy.get(); }
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srsue::phy_interface_mac_lte* get_phy_interface_mac() { return phy.get(); }
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void configure_dedicated(uint16_t rnti, srslte::phy_cfg_t& phy_cfg)
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{
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// set RNTI
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phy->set_crnti(rnti);
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// Set PHY configuration
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phy->set_config(phy_cfg, 0, 0, nullptr);
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}
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void run_thread() override
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{
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bool _running;
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// Free run DL
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do {
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log_h.debug("-- generating DL baseband SFN=%ld; TTI=%d;\n", sfn, dl_sf_cfg.tti);
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// Create empty resource grid with basic signals
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srslte_enb_dl_put_base(&enb_dl, &dl_sf_cfg);
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// Generate signal and transmit
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srslte_enb_dl_gen_signal(&enb_dl);
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// Write baseband to radio
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radio.write_ring_buffers(enb_dl_buffer, sf_len);
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// Increase TTI
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dl_sf_cfg.tti++;
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// Increase System Frame number
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if (dl_sf_cfg.tti >= 10240U) {
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dl_sf_cfg.tti = 0;
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sfn++;
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}
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// Update local running state
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mutex.lock();
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_running = running;
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mutex.unlock();
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} while (_running);
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// Stop PHY now!
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phy->stop();
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// Finish thread
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}
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void start()
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{
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std::lock_guard<std::mutex> lock(mutex);
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running = true;
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thread::start();
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}
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void stop()
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{
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cvar.notify_all();
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mutex.lock();
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running = false;
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mutex.unlock();
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wait_thread_finish();
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}
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void set_loglevel(std::string str)
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{
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log_h.set_level(str);
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radio.set_loglevel(str);
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stack.set_loglevel(str);
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}
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};
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int main(int argc, char** argv)
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{
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int ret = SRSLTE_SUCCESS;
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const uint32_t default_timeout = 60000; // 1 minute
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// Define Cell
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srslte_cell_t cell = {.nof_prb = 6,
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|
.nof_ports = 1,
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|
.id = 1,
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|
.cp = SRSLTE_CP_NORM,
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|
.phich_length = SRSLTE_PHICH_NORM,
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|
.phich_resources = SRSLTE_PHICH_R_1,
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|
.frame_type = SRSLTE_FDD};
|
|
// Define PHY arguments
|
|
srsue::phy_args_t phy_args = {};
|
|
|
|
// Set custom test cell and arguments here
|
|
phy_args.log.phy_level = "info";
|
|
|
|
// Create test bench
|
|
std::unique_ptr<phy_test_bench> phy_test = std::unique_ptr<phy_test_bench>(new phy_test_bench(phy_args, cell));
|
|
phy_test->set_loglevel("info");
|
|
|
|
// Start test bench
|
|
phy_test->start();
|
|
|
|
// 1. Cell search
|
|
srsue::phy_interface_rrc_lte::phy_cell_t phy_cell;
|
|
auto cell_search_res = phy_test->get_phy_interface_rrc()->cell_search(&phy_cell);
|
|
TESTASSERT(cell_search_res.found == srsue::phy_interface_rrc_lte::cell_search_ret_t::CELL_FOUND);
|
|
TESTASSERT(phy_test->get_stack()->wait_in_sync(default_timeout));
|
|
TESTASSERT(memcmp(&phy_cell.cell, &cell, sizeof(srslte_cell_t)) == 0);
|
|
|
|
// 2. Cell select
|
|
phy_test->get_phy_interface_rrc()->cell_select(&phy_cell);
|
|
TESTASSERT(phy_test->get_stack()->wait_in_sync(default_timeout));
|
|
TESTASSERT(phy_test->get_stack()->wait_new_phy_meas(default_timeout));
|
|
|
|
// 3. Transmit PRACH
|
|
phy_test->get_phy_interface_mac()->configure_prach_params();
|
|
phy_test->get_phy_interface_mac()->prach_send(0, -1, 0.0f);
|
|
TESTASSERT(phy_test->get_radio()->wait_tx(default_timeout, false));
|
|
|
|
// 4. Configure RNTI with PUCCH and check transmission
|
|
uint16_t rnti = 0x3c;
|
|
srslte::phy_cfg_t phy_cfg = {};
|
|
phy_cfg.set_defaults();
|
|
phy_cfg.dl_cfg.cqi_report.periodic_mode = SRSLTE_CQI_MODE_12;
|
|
phy_cfg.dl_cfg.cqi_report.periodic_configured = true;
|
|
phy_cfg.dl_cfg.cqi_report.pmi_idx = 0;
|
|
phy_cfg.ul_cfg.pucch.n_pucch_2 = 0;
|
|
phy_test->configure_dedicated(rnti, phy_cfg);
|
|
TESTASSERT(phy_test->get_radio()->wait_tx(default_timeout));
|
|
|
|
// Wait to finish test
|
|
phy_test->stop();
|
|
|
|
// Final test checks...
|
|
TESTASSERT(!phy_test->get_radio()->get_count_late()); // No Late allowed
|
|
|
|
return ret;
|
|
}
|