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feat(rf_emulator): Add parameters

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Add two parameters:
* `enable_noise` to enable noise injection at TX
* `noise_level_dBFS` to set noise level
This commit is contained in:
Romain Beurdouche
2025-08-21 10:53:03 +02:00
committed by Robert Schmidt
parent dfa77647b1
commit 1cebf02b1e
1 changed files with 39 additions and 4 deletions
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radio/emulator/rf_emulator.c
+39 -4
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@@ -32,6 +32,16 @@
#include "common_lib.h"
#include "radio/vrtsim/noise_device.h"
#include "simde/x86/avx512.h"
#include "SIMULATION/TOOLS/sim.h"
#define RF_EMULATOR_SECTION "rf_emulator"
// clang-format off
#define RF_EMULATOR_PARAMS_DESC \
{ \
{"enable_noise", "Enable noise injection", 0, .iptr = &emulator_state->enable_noise, .defintval = 1, TYPE_INT, 0},\
{"noise_level_dBFS", "Noise level", 0, .iptr = &emulator_state->noise_level_dBFS, .defintval = INVALID_DBFS_VALUE, TYPE_INT, 0},\
};
// clang-format on
// structures and timing thread job for timing
typedef struct {
@@ -49,6 +59,8 @@ typedef struct {
emulator_timestamp_t emulator_timestamp;
pthread_t timing_thread;
bool run_timing_thread;
int enable_noise;
int noise_level_dBFS;
} emulator_state_t;
static void *emulator_timing_job(void *arg)
@@ -108,7 +120,13 @@ static int emulator_start(openair0_device *device)
// Start the timing thread and the noise device
emulator_state_t *emulator_state = (emulator_state_t *)device->priv;
if (!emulator_state->run_timing_thread) {
init_noise_device(0); // TODO configure noise level
if (emulator_state->enable_noise > 0) {
float noise_level = emulator_state->noise_level_dBFS == INVALID_DBFS_VALUE
? 0.0f
: (32767.0 / powf(10.0, .05 * -(emulator_state->noise_level_dBFS)));
init_noise_device(noise_level);
LOG_I(HW, "Using noise level with %d dBFS/%f\n", emulator_state->noise_level_dBFS, noise_level);
}
emulator_timestamp_t *emulator_timestamp = &emulator_state->emulator_timestamp;
memset(emulator_timestamp, 0, sizeof(emulator_timestamp_t));
@@ -170,7 +188,9 @@ static void emulator_end(openair0_device *device)
emulator_state->run_timing_thread = false;
int ret = pthread_join(emulator_state->timing_thread, NULL);
AssertFatal(ret == 0, "pthread_join() failed: errno: %d, %s\n", errno, strerror(errno));
free_noise_device();
if (emulator_state->enable_noise > 0) {
free_noise_device();
}
}
}
@@ -299,13 +319,26 @@ static int emulator_read(openair0_device *device, openair0_timestamp *ptimestamp
*ptimestamp = emulator_state->last_received_sample;
emulator_state->last_received_sample += nsamps;
for (int i = 0; i < nbAnt; i++) {
read_noise(buff[i], nsamps);
if (emulator_state->enable_noise > 0) {
for (int i = 0; i < nbAnt; i++) {
read_noise(buff[i], nsamps);
}
} else {
for (int i = 0; i < nbAnt; i++) {
memset(buff[i], 0, nsamps * sizeof(c16_t));
}
}
return nsamps;
}
static void emulator_readconfig(emulator_state_t *emulator_state)
{
paramdef_t emulator_params[] = RF_EMULATOR_PARAMS_DESC;
int ret = config_get(config_get_if(), emulator_params, sizeofArray(emulator_params), RF_EMULATOR_SECTION);
AssertFatal(ret >= 0, "configuration couldn't be performed\n");
}
int device_init(openair0_device *device, openair0_config_t *openair0_cfg)
{
LOG_I(HW, "This is emulator RF that does nothing\n");
@@ -330,5 +363,7 @@ int device_init(openair0_device *device, openair0_config_t *openair0_cfg)
device->trx_write_func = emulator_write;
device->trx_read_func = emulator_read;
emulator_readconfig(emulator_state);
return 0;
}