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limesdr: add ability to set RF oversampling ratio 

Add ability to set RF oversampling ratio via command line options. By
default the default value is used.

Test: none.

Signed-off-by: Gluttton <gluttton@ukr.net>
This commit is contained in:
Gluttton 2020-07-30 23:08:32 +03:00
parent eb476d2e75
commit da1aeeeea6
1 changed files with 6 additions and 1 deletions
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7
sdr_limesdr.c
View File

@ -58,6 +58,7 @@ static struct {
bool is_stream_opened; bool is_stream_opened;
bool is_stop; bool is_stop;
char verbosity; char verbosity;
size_t oversample;
lms_info_str_t serial; lms_info_str_t serial;
int bytes_in_sample; int bytes_in_sample;
iq_convert_fn converter; iq_convert_fn converter;
@ -98,6 +99,7 @@ void limesdrInitConfig()
LimeSDR.is_stream_opened = false; LimeSDR.is_stream_opened = false;
LimeSDR.is_stop = false; LimeSDR.is_stop = false;
LimeSDR.verbosity = LMS_LOG_INFO; LimeSDR.verbosity = LMS_LOG_INFO;
LimeSDR.oversample = 0; // default oversample
LimeSDR.serial[0] = '\0'; LimeSDR.serial[0] = '\0';
LimeSDR.bytes_in_sample = 2 * sizeof(int16_t); // hardcoded for LMS_FMT_I16 LimeSDR.bytes_in_sample = 2 * sizeof(int16_t); // hardcoded for LMS_FMT_I16
@ -111,6 +113,7 @@ void limesdrShowHelp()
printf("--limesdr-verbosity set verbosity level for LimeSDR messages\n"); printf("--limesdr-verbosity set verbosity level for LimeSDR messages\n");
printf("--limesdr-serial serial number of desired device\n"); printf("--limesdr-serial serial number of desired device\n");
printf("--limesdr-channel set number of an RX channel\n"); printf("--limesdr-channel set number of an RX channel\n");
printf("--limesdr-oversample set RF oversampling ratio\n");
printf("\n"); printf("\n");
} }
@ -125,6 +128,8 @@ bool limesdrHandleOption(int argc, char **argv, int *jptr)
strcpy(LimeSDR.serial, argv[++j]); strcpy(LimeSDR.serial, argv[++j]);
} else if (!strcmp(argv[j], "--limesdr-channel") && more) { } else if (!strcmp(argv[j], "--limesdr-channel") && more) {
LimeSDR.stream.channel = atoi(argv[++j]); LimeSDR.stream.channel = atoi(argv[++j]);
} else if (!strcmp(argv[j], "--limesdr-oversample") && more) {
LimeSDR.oversample = atoi(argv[++j]);
} else { } else {
return false; return false;
} }
@ -198,7 +203,7 @@ bool limesdrOpen(void)
goto error; goto error;
} }
if (LMS_SetSampleRate(LimeSDR.dev, Modes.sample_rate, 0/*default oversample*/)) { if (LMS_SetSampleRate(LimeSDR.dev, Modes.sample_rate, LimeSDR.oversample)) {
limesdrLogHandler(LMS_LOG_ERROR, "unable to set sampling rate"); limesdrLogHandler(LMS_LOG_ERROR, "unable to set sampling rate");
goto error; goto error;
} }