kopia lustrzana https://github.com/keenerd/rtl-sdr
rtl_power: adjustable sample rate
rodzic
3223086277
commit
40bf3cb477
|
@ -72,8 +72,9 @@
|
|||
#define AUTO_GAIN -100
|
||||
#define BUFFER_DUMP (1<<12)
|
||||
|
||||
#define MAXIMUM_RATE 2400000
|
||||
#define MAXIMUM_RATE 3200000
|
||||
#define MINIMUM_RATE 1000000
|
||||
int target_rate = 2400000;
|
||||
|
||||
static volatile int do_exit = 0;
|
||||
static rtlsdr_dev_t *dev = NULL;
|
||||
|
@ -155,6 +156,7 @@ void usage(void)
|
|||
"\t enables low-leakage downsample filter,\n"
|
||||
"\t fir_size can be 0 or 9. 0 has bad roll off,\n"
|
||||
"\t try with '-c 50%%'\n"
|
||||
"\t[-r max_sample_rate (default: 2.4M)]\n"
|
||||
"\t[-P enables peak hold (default: off)]\n"
|
||||
"\t[-D direct_sampling_mode, 0 (default/off), 1 (I), 2 (Q), 3 (no-mod)]\n"
|
||||
"\t[-O enable offset tuning (default: off)]\n"
|
||||
|
@ -490,7 +492,7 @@ int solve_downsample(struct channel_solve *c, int boxcar)
|
|||
} else {
|
||||
ds_next = c->downsample * 2;
|
||||
}
|
||||
if (((int)bw * ds_next) > MAXIMUM_RATE) {
|
||||
if (((int)bw * ds_next) > target_rate) {
|
||||
break;}
|
||||
|
||||
c->downsample = ds_next;
|
||||
|
@ -505,7 +507,7 @@ int solve_hopping(struct channel_solve *c)
|
|||
{
|
||||
int i, scan_size, bins_all, bins_crop, bins_2;
|
||||
scan_size = c->upper - c->lower;
|
||||
/* evenly sized ranges, as close to MAXIMUM_RATE as possible */
|
||||
/* evenly sized ranges, as close to target_rate as possible */
|
||||
for (i=1; i<MAX_TUNES; i++) {
|
||||
c->bw_wanted = scan_size / i;
|
||||
bins_all = scan_size / c->bin_spec;
|
||||
|
@ -514,7 +516,7 @@ int solve_hopping(struct channel_solve *c)
|
|||
bins_2 = 1 << c->bin_e;
|
||||
c->bw_needed = bins_2 * c->bin_spec;
|
||||
c->crop_tmp = (double)(bins_2 - bins_crop) / (double)bins_2;
|
||||
if (c->bw_needed > MAXIMUM_RATE) {
|
||||
if (c->bw_needed > target_rate) {
|
||||
continue;}
|
||||
if (c->crop_tmp < c->crop) {
|
||||
continue;}
|
||||
|
@ -848,7 +850,7 @@ int main(int argc, char **argv)
|
|||
double (*window_fn)(int, int) = rectangle;
|
||||
freq_optarg = "";
|
||||
|
||||
while ((opt = getopt(argc, argv, "f:i:s:t:d:g:p:e:w:c:F:1PD:Oh")) != -1) {
|
||||
while ((opt = getopt(argc, argv, "f:i:s:r:t:d:g:p:e:w:c:F:1PD:Oh")) != -1) {
|
||||
switch (opt) {
|
||||
case 'f': // lower:upper:bin_size
|
||||
freq_optarg = strdup(optarg);
|
||||
|
@ -901,6 +903,9 @@ int main(int argc, char **argv)
|
|||
ppm_error = atoi(optarg);
|
||||
custom_ppm = 1;
|
||||
break;
|
||||
case 'r':
|
||||
target_rate = (int)atofs(optarg);
|
||||
break;
|
||||
case '1':
|
||||
single = 1;
|
||||
break;
|
||||
|
@ -934,6 +939,13 @@ int main(int argc, char **argv)
|
|||
exit(1);
|
||||
}
|
||||
|
||||
if (target_rate < 2 * MINIMUM_RATE) {
|
||||
target_rate = 2 * MINIMUM_RATE;
|
||||
}
|
||||
if (target_rate > MAXIMUM_RATE) {
|
||||
target_rate = MAXIMUM_RATE;
|
||||
}
|
||||
|
||||
frequency_range(freq_optarg, crop, boxcar);
|
||||
|
||||
if (tune_count == 0) {
|
||||
|
|
Ładowanie…
Reference in New Issue