Add direct test for sxceiver TX operation
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The test generates a continuous carrier signal, offset by 20 kHz from
the center frequency. The generated carrier must be clean when
received by another device.
This commit is contained in:
Thomas Kolb 2024-10-06 14:38:24 +01:00
parent 79d1178150
commit e4a6e6b300
2 changed files with 131 additions and 0 deletions

View file

@ -222,3 +222,24 @@ target_link_libraries(
test_interleaver
m
)
#------------------------------------
add_executable(
test_sx
../src/utils.c
../src/utils.h
../src/logger.c
../src/logger.h
test_sx.c
)
target_link_libraries(
test_sx
liquid
m
rt
fftw3f
fec
SoapySDR
)

110
impl/test/test_sx.c Normal file
View file

@ -0,0 +1,110 @@
#include <SoapySDR/Device.h>
#include <SoapySDR/Formats.h>
#include <SoapySDR/Logger.h>
#include <string.h>
#include "logger.h"
#include "config.h"
#include "results.h"
#include "utils.h"
typedef struct {
SoapySDRDevice *sdr;
SoapySDRStream *rx_stream;
SoapySDRStream *tx_stream;
} sdr_ctx_t;
int main(void)
{
sdr_ctx_t ctx;
SoapySDRKwargs args;
memset(&args, 0, sizeof(args));
SoapySDRKwargs_set(&args, "driver", "sx");
ctx.sdr = SoapySDRDevice_make(&args);
SoapySDRKwargs_clear(&args);
if (ctx.sdr == NULL)
{
LOG(LVL_ERR, "SoapySDRDevice_make fail: %s", SoapySDRDevice_lastError());
return ERR_SOAPY;
}
//setup streams
ctx.rx_stream = SoapySDRDevice_setupStream(ctx.sdr, SOAPY_SDR_RX, SOAPY_SDR_CF32, NULL, 0, NULL);
if(ctx.rx_stream == NULL) {
LOG(LVL_ERR, "setupStream fail: %s", SoapySDRDevice_lastError());
return ERR_SOAPY;
}
ctx.tx_stream = SoapySDRDevice_setupStream(ctx.sdr, SOAPY_SDR_TX, SOAPY_SDR_CF32, NULL, 0, NULL);
if(ctx.tx_stream == NULL) {
LOG(LVL_ERR, "setupStream fail: %s", SoapySDRDevice_lastError());
return ERR_SOAPY;
}
//apply settings
if (SoapySDRDevice_setSampleRate(ctx.sdr, SOAPY_SDR_RX, 0, SDR_RX_SAMPLING_RATE) != 0) {
LOG(LVL_ERR, "setSampleRate fail: %s", SoapySDRDevice_lastError());
return ERR_SOAPY;
}
if (SoapySDRDevice_setFrequency(ctx.sdr, SOAPY_SDR_RX, 0, SDR_RX_FREQ - SDR_RX_IF_SHIFT, NULL) != 0) {
LOG(LVL_ERR, "setFrequency fail: %s", SoapySDRDevice_lastError());
return ERR_SOAPY;
}
if (SoapySDRDevice_setSampleRate(ctx.sdr, SOAPY_SDR_TX, 0, SDR_TX_SAMPLING_RATE) != 0) {
LOG(LVL_ERR, "setSampleRate fail: %s", SoapySDRDevice_lastError());
return ERR_SOAPY;
}
if (SoapySDRDevice_setFrequency(ctx.sdr, SOAPY_SDR_TX, 0, SDR_TX_FREQ, NULL) != 0) {
LOG(LVL_ERR, "setFrequency fail: %s", SoapySDRDevice_lastError());
return ERR_SOAPY;
}
if(SoapySDRDevice_setGain(ctx.sdr, SOAPY_SDR_TX, 0, SDR_GAIN_TX) != 0) {
LOG(LVL_ERR, "setGain fail: %s", SoapySDRDevice_lastError());
return ERR_SOAPY;
}
#define BUFSIZE 300000
if(SoapySDRDevice_activateStream(ctx.sdr, ctx.tx_stream, 0, 0, 0) != 0) {
LOG(LVL_ERR, "activateStream fail: %s", SoapySDRDevice_lastError());
return ERR_SOAPY;
}
float complex samples[BUFSIZE];
float dphi = 6.28 * 20e3 / SDR_TX_SAMPLING_RATE;
float phi = 0.0f;
float twopi = 6.283185307;
while(true) {
for(size_t i = 0; i < BUFSIZE; i++) {
phi += dphi;
if(phi > twopi) {
phi -= twopi;
}
samples[i] = cexpf(I * phi);
}
int flags = 0;
void *buffs[] = {(void*)samples};
size_t timeout_us = 100000;
int ret = SoapySDRDevice_writeStream(ctx.sdr, ctx.tx_stream, (const void* const*)buffs, BUFSIZE, &flags, 0, timeout_us);
if(ret <= 0) {
LOG(LVL_ERR, "writeStream fail: %s", SoapySDRDevice_lastError());
return ERR_SOAPY;
}
}
return OK;
}