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rtl_power: clean ^C, cropped bins, +32k bins

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Signed-off-by: Steve Markgraf <steve@steve-m.de>
This commit is contained in:
Kyle Keen 2013-10-28 21:24:17 -04:00 committed by Steve Markgraf
parent 1cdc3a02fd
commit 968b6fbfdc
1 changed files with 28 additions and 25 deletions
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53
src/rtl_power.c
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@ -34,9 +34,9 @@
* general astronomy usefulness
* multiple dongles
* multiple FFT workers
* fft bins smaller than 61Hz
* bandwidths smaller than 1MHz
* check edge cropping for off-by-one and rounding errors
* 1.8MS/s for hiding xtal harmonics
*/
#include <errno.h>
@ -64,11 +64,7 @@
#include "rtl-sdr.h"
#define DEFAULT_SAMPLE_RATE 24000
#define DEFAULT_ASYNC_BUF_NUMBER 32
#define DEFAULT_BUF_LENGTH (1 * 16384)
#define MAXIMUM_OVERSAMPLE 16
#define MAXIMUM_BUF_LENGTH (MAXIMUM_OVERSAMPLE * DEFAULT_BUF_LENGTH)
#define AUTO_GAIN -100
#define BUFFER_DUMP (1<<12)
@ -91,7 +87,6 @@ struct tuning_state
int bin_e;
long *avg; /* length == 2^bin_e */
int samples;
long mega_samples;
//pthread_rwlock_t avg_lock;
//pthread_mutex_t avg_mutex;
/* having the iq buffer here is wasteful, but will avoid contention */
@ -113,7 +108,7 @@ void usage(void)
"Use:\trtl_power -f freq_range [-options] [filename]\n"
"\t-f lower:upper:bin_size [Hz]\n"
"\t (bin size is a maximum, smaller more convenient bins\n"
"\t will be used. valid range 61-2M)\n"
"\t will be used. valid range 1Hz - 2MHz)\n"
"\t[-i integration_interval (default: 10 seconds)]\n"
"\t (buggy if a full sweep takes longer than the interval)\n"
"\t[-1 enables single-shot mode (default: off)]\n"
@ -145,10 +140,9 @@ void usage(void)
"\trtl_power -f ... -i 15m -1 log.csv\n"
"\t (integrate for 15 minutes and exit afterwards)\n"
"\trtl_power -f ... -e 1h | gzip > log.csv.gz\n"
"\t (collect data for one hour and compress it on the fly)\n"
"Convert CSV to a waterfall graphic with\n"
"\thttp://kmkeen.com/tmp/heatmap.py.txt\n"
"");
"\t (collect data for one hour and compress it on the fly)\n\n"
"Convert CSV to a waterfall graphic with:\n"
"\thttp://kmkeen.com/tmp/heatmap.py.txt\n");
exit(1);
}
@ -157,8 +151,8 @@ BOOL WINAPI
sighandler(int signum)
{
if (CTRL_C_EVENT == signum) {
fprintf(stderr, "Signal caught, exiting!\n");
do_exit = 1;
do_exit++;
multi_bail();
return TRUE;
}
return FALSE;
@ -166,11 +160,23 @@ sighandler(int signum)
#else
static void sighandler(int signum)
{
fprintf(stderr, "Signal caught, exiting!\n");
do_exit = 1;
do_exit++;
multi_bail();
}
#endif
void multi_bail(void)
{
if (do_exit == 1)
{
fprintf(stderr, "Signal caught, finishing scan pass.\n");
}
if (do_exit >= 2)
{
fprintf(stderr, "Signal caught, aborting immediately.\n");
}
}
/* more cond dumbness */
#define safe_cond_signal(n, m) pthread_mutex_lock(m); pthread_cond_signal(n); pthread_mutex_unlock(m)
#define safe_cond_wait(n, m) pthread_mutex_lock(m); pthread_cond_wait(n, m); pthread_mutex_unlock(m)
@ -205,7 +211,7 @@ inline int16_t FIX_MPY(int16_t a, int16_t b)
return (c >> 1) + b;
}
int fix_fft(int16_t iq[], int16_t m)
int fix_fft(int16_t iq[], int m)
/* interleaved iq[], 0 <= n < 2**m, changes in place */
{
int mr, nn, i, j, l, k, istep, n, shift;
@ -367,8 +373,6 @@ void rms_power(struct tuning_state *ts)
ts->avg[0] += p;
ts->samples += 1;
/* complex pairs, half length */
ts->mega_samples += (long)(buf_len/2);
}
double atofs(char *f)
@ -522,7 +526,6 @@ void frequency_range(char *arg, double crop)
ts->rate = bw_used;
ts->bin_e = bin_e;
ts->samples = 0;
ts->mega_samples = 0L;
ts->avg = (long*)malloc((1<<bin_e) * sizeof(long));
if (!ts->avg) {
fprintf(stderr, "Error: malloc.\n");
@ -568,8 +571,8 @@ void scanner(void)
bin_len = 1 << bin_e;
buf_len = tunes[0].buf_len;
for (i=0; i<tune_count; i++) {
if (do_exit) {
break;}
if (do_exit >= 2)
{return;}
ts = &tunes[i];
f = (int)rtlsdr_get_center_freq(dev);
if (f != ts->freq) {
@ -603,7 +606,7 @@ void scanner(void)
void csv_dbm(struct tuning_state *ts, double crop)
{
int i, len, i1, i2, bw2;
int i, len, i1, i2, bw2, bin_count;
long tmp;
double dbm;
len = 1 << ts->bin_e;
@ -619,7 +622,8 @@ void csv_dbm(struct tuning_state *ts, double crop)
}
}
/* Hz low, Hz high, Hz step, samples, dbm, dbm, ... */
bw2 = (int)((double)ts->rate * (1.0-crop) * 0.5);
bin_count = (int)((double)len * (1.0 - crop));
bw2 = (int)(((double)ts->rate * (double)bin_count) / (len * 2));
fprintf(file, "%i, %i, %.2f, %i, ", ts->freq - bw2, ts->freq + bw2,
(double)ts->rate / (double)len, ts->samples);
// something seems off with the dbm math
@ -642,7 +646,6 @@ void csv_dbm(struct tuning_state *ts, double crop)
ts->avg[i] = 0L;
}
ts->samples = 0;
ts->mega_samples = 0L;
}
int main(int argc, char **argv)
@ -661,7 +664,7 @@ int main(int argc, char **argv)
int fft_threads = 1;
int smoothing = 0;
int single = 0;
double crop = 0.1;
double crop = 0.0;
char vendor[256], product[256], serial[256];
char *freq_optarg;
time_t next_tick;