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SDR: Add clock source selection, untested yet

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This commit is contained in:
Andreas Eversberg
2018-06-24 11:36:56 +02:00
parent 0a3e11d8a8
commit b7046a5283
7 changed files with 121 additions and 19 deletions
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62
src/libsdr/uhd.c
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@@ -49,11 +49,11 @@ static time_t tx_time_secs = 0;
static double tx_time_fract_sec = 0.0;
static int tx_timestamps;
int uhd_open(size_t channel, const char *_device_args, const char *_stream_args, const char *_tune_args, const char *tx_antenna, const char *rx_antenna, double tx_frequency, double rx_frequency, double lo_offset, double rate, double tx_gain, double rx_gain, double bandwidth, int _tx_timestamps)
int uhd_open(size_t channel, const char *_device_args, const char *_stream_args, const char *_tune_args, const char *tx_antenna, const char *rx_antenna, const char *clock_source, double tx_frequency, double rx_frequency, double lo_offset, double rate, double tx_gain, double rx_gain, double bandwidth, int _tx_timestamps)
{
uhd_error error;
double got_frequency, got_rate, got_gain, got_bandwidth;
char got_antenna[64];
char got_antenna[64], got_clock[64];
samplerate = rate;
tx_timestamps = _tx_timestamps;
@@ -71,6 +71,64 @@ int uhd_open(size_t channel, const char *_device_args, const char *_stream_args,
return -EIO;
}
/* clock source */
if (clock_source && clock_source[0]) {
if (!strcasecmp(clock_source, "list")) {
uhd_string_vector_handle clocks;
size_t clocks_length;
int i;
error = uhd_string_vector_make(&clocks);
if (error) {
clock_vector_error:
PDEBUG(DUHD, DEBUG_ERROR, "Failed to hande UHD vector, please fix!\n");
uhd_close();
return -EIO;
}
error = uhd_usrp_get_clock_sources(usrp, 0, &clocks);
if (error) {
PDEBUG(DUHD, DEBUG_ERROR, "Failed to request list of clock sources!\n");
uhd_close();
return -EIO;
}
error = uhd_string_vector_size(clocks, &clocks_length);
if (error)
goto clock_vector_error;
for (i = 0; i < (int)clocks_length; i++) {
error = uhd_string_vector_at(clocks, i, got_clock, sizeof(got_clock));
if (error)
goto clock_vector_error;
PDEBUG(DUHD, DEBUG_NOTICE, "Clock source: '%s'\n", got_clock);
}
uhd_string_vector_free(&clocks);
error = uhd_usrp_get_clock_source(usrp, 0, got_clock, sizeof(got_clock));
if (error) {
PDEBUG(DUHD, DEBUG_ERROR, "Failed to get clock source\n");
uhd_close();
return -EINVAL;
}
PDEBUG(DUHD, DEBUG_NOTICE, "Default clock source: '%s'\n", got_clock);
uhd_close();
return 1;
}
error = uhd_usrp_set_clock_source(usrp, clock_source, 0);
if (error) {
PDEBUG(DUHD, DEBUG_ERROR, "Failed to set clock source to '%s'\n", clock_source);
uhd_close();
return -EIO;
}
error = uhd_usrp_get_clock_source(usrp, 0, got_clock, sizeof(got_clock));
if (error) {
PDEBUG(DUHD, DEBUG_ERROR, "Failed to get clock source\n");
uhd_close();
return -EINVAL;
}
if (!!strcasecmp(clock_source, got_clock)) {
PDEBUG(DUHD, DEBUG_NOTICE, "Given clock source '%s' was accepted, but driver claims to use '%s'\n", clock_source, got_clock);
uhd_close();
return -EINVAL;
}
}
if (tx_frequency) {
/* antenna */
if (tx_antenna && tx_antenna[0]) {