SDR: Display spectrum graph together with channel numbers and position
This commit is contained in:
parent
496aff5a79
commit
9205767f94
|
@ -49,7 +49,7 @@ void display_iq_on(int on);
|
|||
void display_iq_limit_scroll(int on);
|
||||
void display_iq(float *samples, int length);
|
||||
|
||||
void display_spectrum_init(int samplerate);
|
||||
void display_spectrum_init(int samplerate, double center_frequency);
|
||||
void display_spectrum_on(int on);
|
||||
void display_spectrum_limit_scroll(int on);
|
||||
void display_spectrum(float *samples, int length);
|
||||
|
|
|
@ -33,10 +33,11 @@ static char screen[HEIGHT][MAX_DISPLAY_WIDTH];
|
|||
static uint8_t screen_color[HEIGHT][MAX_DISPLAY_WIDTH];
|
||||
static int spectrum_on = 0;
|
||||
static double db = 100;
|
||||
static double center_frequency, frequency_range;
|
||||
|
||||
static dispspectrum_t disp;
|
||||
|
||||
void display_spectrum_init(int samplerate)
|
||||
void display_spectrum_init(int samplerate, double _center_frequency)
|
||||
{
|
||||
memset(&disp, 0, sizeof(disp));
|
||||
disp.interval_max = (double)samplerate * DISPLAY_INTERVAL + 0.5;
|
||||
|
@ -44,6 +45,9 @@ void display_spectrum_init(int samplerate)
|
|||
if (disp.interval_max < MAX_DISPLAY_SPECTRUM - 1)
|
||||
disp.interval_max = MAX_DISPLAY_SPECTRUM - 1;
|
||||
memset(buffer_max, 0, sizeof(buffer_max));
|
||||
|
||||
center_frequency = _center_frequency;
|
||||
frequency_range = (double)samplerate;
|
||||
}
|
||||
|
||||
void display_spectrum_on(int on)
|
||||
|
@ -90,6 +94,8 @@ void display_spectrum_limit_scroll(int on)
|
|||
*/
|
||||
void display_spectrum(float *samples, int length)
|
||||
{
|
||||
sender_t *sender;
|
||||
char print_channel[32], print_frequency[32];
|
||||
int width, h;
|
||||
int pos, max;
|
||||
double *buffer_I, *buffer_Q;
|
||||
|
@ -213,6 +219,34 @@ void display_spectrum(float *samples, int length)
|
|||
}
|
||||
}
|
||||
}
|
||||
for (sender = sender_head; sender; sender = sender->next) {
|
||||
j = (int)((sender->empfangsfrequenz - center_frequency) / frequency_range * (double) fft_size + width / 2 + 0.5);
|
||||
if (j < 0 || j >= width) /* check out-of-range, should not happen */
|
||||
continue;
|
||||
for (k = 0; k < HEIGHT; k++) {
|
||||
/* skip yellow graph */
|
||||
if (screen_color[k][j] == 13)
|
||||
continue;
|
||||
screen[k][j] = ':';
|
||||
screen_color[k][j] = 12;
|
||||
}
|
||||
sprintf(print_channel, "Ch%d", sender->kanal);
|
||||
for (o = 0; o < (int)strlen(print_channel); o++) {
|
||||
s = j - strlen(print_channel) + o;
|
||||
if (s >= 0 && s < width) {
|
||||
screen[HEIGHT - 1][s] = print_channel[o];
|
||||
screen_color[HEIGHT - 1][s] = 7;
|
||||
}
|
||||
}
|
||||
sprintf(print_frequency, "%.4f", sender->empfangsfrequenz / 1e6);
|
||||
for (o = 0; o < (int)strlen(print_frequency); o++) {
|
||||
s = j + o + 1;
|
||||
if (s >= 0 && s < width) {
|
||||
screen[HEIGHT - 1][s] = print_frequency[o];
|
||||
screen_color[HEIGHT - 1][s] = 7;
|
||||
}
|
||||
}
|
||||
}
|
||||
printf("\0337\033[H");
|
||||
for (j = 0; j < HEIGHT; j++) {
|
||||
for (k = 0; k < width; k++) {
|
||||
|
|
|
@ -114,9 +114,6 @@ void *sdr_open(const char __attribute__((__unused__)) *audiodev, double *tx_freq
|
|||
threads = 1;
|
||||
}
|
||||
|
||||
display_iq_init(samplerate);
|
||||
display_spectrum_init(samplerate);
|
||||
|
||||
bandwidth = 2.0 * (max_deviation + max_modulation);
|
||||
PDEBUG(DSDR, DEBUG_INFO, "Require bandwidth of 2 * (%.1f + %.1f) = %.1f\n", max_deviation / 1000, max_modulation / 1000, bandwidth / 1000);
|
||||
|
||||
|
@ -340,6 +337,9 @@ void *sdr_open(const char __attribute__((__unused__)) *audiodev, double *tx_freq
|
|||
tx_center_frequency = temp;
|
||||
}
|
||||
|
||||
display_iq_init(samplerate);
|
||||
display_spectrum_init(samplerate, rx_center_frequency);
|
||||
|
||||
#ifdef HAVE_UHD
|
||||
if (sdr_config->uhd) {
|
||||
rc = uhd_open(sdr_config->channel, sdr_config->device_args, sdr_config->stream_args, sdr_config->tune_args, sdr_config->tx_antenna, sdr_config->rx_antenna, tx_center_frequency, rx_center_frequency, sdr_config->samplerate, sdr_config->tx_gain, sdr_config->rx_gain, sdr_config->bandwidth, sdr_config->uhd_tx_timestamps);
|
||||
|
|
|
@ -41,6 +41,7 @@ enum paging_signal;
|
|||
#include "tv_modulate.h"
|
||||
#include "channels.h"
|
||||
|
||||
void *sender_head = NULL;
|
||||
int use_sdr = 0;
|
||||
int num_kanal = 1; /* only one channel used for debugging */
|
||||
|
||||
|
|
Loading…
Reference in New Issue