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benchmark_radio: added option to change sampling rate during experiment 

this patch adds the -y paramter that changes the sampling rate
during a radio benchmark to stress-test the API

it turned out that some devices/drivers are very prone to
sampling rate changes. since this happens during UE operation
when the UE is searching for cells, we need to make sure
the driver/device supports that operation.
This commit is contained in:
Andre Puschmann 2020-04-24 12:18:15 +02:00 committed by Xavier Arteaga
parent 3a258c16be
commit 42bb387dae
1 changed files with 34 additions and 14 deletions
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48
lib/src/radio/test/benchmark_radio.cc
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@ -42,19 +42,20 @@ using namespace srslte;
static char radios_args[SRSLTE_MAX_RADIOS][64] = {"auto", "auto", "auto"};
static char radio_device[64];
log_filter log_h;
std::string file_pattern = "radio%d.dat";
double freq = 2630e6;
uint32_t nof_radios = 1;
uint32_t nof_ports = 1;
double srate = 1.92e6; /* Hz */
double duration = 0.01; /* in seconds, 10 ms by default */
cf_t* buffers[SRSLTE_MAX_RADIOS][SRSLTE_MAX_PORTS];
bool tx_enable = false;
bool measure_delay = false;
bool capture = false;
bool agc_enable = true;
float rf_gain = -1.0;
static log_filter log_h;
static std::string file_pattern = "radio%d.dat";
static double freq = 2630e6;
static uint32_t nof_radios = 1;
static uint32_t nof_ports = 1;
static double srate = 1.92e6; /* Hz */
static double duration = 0.01; /* in seconds, 10 ms by default */
static cf_t* buffers[SRSLTE_MAX_RADIOS][SRSLTE_MAX_PORTS];
static bool tx_enable = false;
static bool sim_rate_change = false;
static bool measure_delay = false;
static bool capture = false;
static bool agc_enable = true;
static float rf_gain = -1.0;
#ifdef ENABLE_GUI
#include "srsgui/srsgui.h"
@ -86,6 +87,7 @@ void usage(char* prog)
printf("\t-t duration in seconds [Default %.3f]\n", duration);
printf("\t-m measure delay [Default %s]\n", (measure_delay) ? "enabled" : "disabled");
printf("\t-x enable transmit [Default %s]\n", (tx_enable) ? "enabled" : "disabled");
printf("\t-y simulate rate changes [Default %s]\n", (sim_rate_change) ? "enabled" : "disabled");
printf("\t-w capture [Default %s]\n", (capture) ? "enabled" : "disabled");
printf("\t-o Output file pattern [Default %s]\n", file_pattern.c_str());
printf("\t-F Display spectrum [Default %s]\n", (fft_plot_enable) ? "enabled" : "disabled");
@ -96,7 +98,7 @@ void usage(char* prog)
void parse_args(int argc, char** argv)
{
int opt;
while ((opt = getopt(argc, argv, "foabcderpsStvhmFxwg")) != -1) {
while ((opt = getopt(argc, argv, "foabcderpsStvhmFxywg")) != -1) {
switch (opt) {
case 'f':
freq = strtof(argv[optind], NULL);
@ -142,6 +144,9 @@ void parse_args(int argc, char** argv)
case 'x':
tx_enable ^= true;
break;
case 'y':
sim_rate_change ^= true;
break;
case 'w':
capture ^= true;
break;
@ -388,6 +393,21 @@ int main(int argc, char** argv)
}
for (uint32_t i = 0; i < nof_frames; i++) {
if (sim_rate_change) {
if (i % 1000 == 0) {
// toggle rate between cell search rate and configured rate every second
static bool srate_is_cell_search = false;
double new_rate = (srate_is_cell_search = !srate_is_cell_search) ? srate : 1.92e6;
printf("Changing sampling rate to %.2f Msamps/s\n", new_rate / 1e6);
for (uint32_t r = 0; r < nof_radios; r++) {
radio_h[r]->set_rx_srate(new_rate);
if (tx_enable) {
radio_h[r]->set_tx_srate(new_rate);
}
}
}
}
int gap = 0;
frame_size = SRSLTE_MIN(frame_size, nof_samples);