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#include <SoapySDR/Device.h>
#include <SoapySDR/Formats.h>
#include <stdio.h> //printf
#include <stdlib.h> //free
#include <complex.h>
int main(void)
{
size_t length;
//enumerate devices
SoapySDRKwargs *results = SoapySDRDevice_enumerate(NULL, &length);
for (size_t i = 0; i < length; i++)
{
printf("Found device #%d: ", (int)i);
for (size_t j = 0; j < results[i].size; j++)
{
printf("%s=%s, ", results[i].keys[j], results[i].vals[j]);
}
printf("\n");
}
SoapySDRKwargsList_clear(results, length);
//create device instance
//args can be user defined or from the enumeration result
SoapySDRKwargs args = {};
SoapySDRKwargs_set(&args, "driver", "xtrx");
SoapySDRKwargs_set(&args, "refclk", "26000000");
SoapySDRKwargs_set(&args, "loglvl", "2");
SoapySDRDevice *sdr = SoapySDRDevice_make(&args);
SoapySDRKwargs_clear(&args);
//query device info
char** names = SoapySDRDevice_listAntennas(sdr, SOAPY_SDR_RX, 0, &length);
printf("Rx antennas: ");
for (size_t i = 0; i < length; i++) printf("%s, ", names[i]);
printf("\n");
SoapySDRStrings_clear(&names, length);
names = SoapySDRDevice_listGains(sdr, SOAPY_SDR_RX, 0, &length);
printf("Rx gains: ");
for (size_t i = 0; i < length; i++) printf("%s, ", names[i]);
printf("\n");
SoapySDRStrings_clear(&names, length);
SoapySDRRange *ranges = SoapySDRDevice_getFrequencyRange(sdr, SOAPY_SDR_RX, 0, &length);
printf("Rx freq ranges: ");
for (size_t i = 0; i < length; i++) printf("[%g Hz -> %g Hz], ", ranges[i].minimum, ranges[i].maximum);
printf("\n");
free(ranges);
//apply settings
if (SoapySDRDevice_setSampleRate(sdr, SOAPY_SDR_RX, 0, 1e6) != 0)
{
printf("setSampleRate fail: %s\n", SoapySDRDevice_lastError());
}
if (SoapySDRDevice_setFrequency(sdr, SOAPY_SDR_RX, 0, 912.3e6, NULL) != 0)
{
printf("setFrequency fail: %s\n", SoapySDRDevice_lastError());
}
ranges = SoapySDRDevice_getFrequencyRangeComponent(sdr, SOAPY_SDR_RX, 0, "BB", &length);
printf("Rx BB freq ranges: ");
for (size_t i = 0; i < length; i++) printf("[%g Hz -> %g Hz], ", ranges[i].minimum, ranges[i].maximum);
printf("\n");
free(ranges);
//setup a stream (complex floats)
SoapySDRStream *rxStream;
if (SoapySDRDevice_setupStream(sdr, &rxStream, SOAPY_SDR_RX, SOAPY_SDR_CF32, NULL, 0, NULL) != 0)
{
printf("setupStream fail: %s\n", SoapySDRDevice_lastError());
}
SoapySDRDevice_activateStream(sdr, rxStream, 0, 0, 0); //start streaming
//create a re-usable buffer for rx samples
complex float buff[1024];
//receive some samples
for (size_t i = 0; i < 10; i++)
{
void *buffs[] = {buff}; //array of buffers
int flags; //flags set by receive operation
long long timeNs; //timestamp for receive buffer
int ret = SoapySDRDevice_readStream(sdr, rxStream, buffs, 1024, &flags, &timeNs, 100000);
printf("ret=%d, flags=%d, timeNs=%lld\n", ret, flags, timeNs);
}
//shutdown the stream
SoapySDRDevice_deactivateStream(sdr, rxStream, 0, 0); //stop streaming
SoapySDRDevice_closeStream(sdr, rxStream);
char** sensors = SoapySDRDevice_listSensors(sdr, &length);
for (size_t i = 0; i < length; i++) {
SoapySDRArgInfo nfo = SoapySDRDevice_getSensorInfo(sdr, sensors[i]);
printf("Sensor %d [%-16s]: %-24s (%-48s): %s\n", (int)i, nfo.key, nfo.name, nfo.description,
SoapySDRDevice_readSensor(sdr, nfo.key));
}
//cleanup device handle
SoapySDRDevice_unmake(sdr);
printf("Done\n");
return EXIT_SUCCESS;
}
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