mirror of
https://github.com/rtlsdrblog/rtl-sdr-blog.git
synced 2024-11-06 02:37:32 +01:00
cosmetic fixes/cleanup
Signed-off-by: Steve Markgraf <steve@steve-m.de>
This commit is contained in:
Steve Markgraf
parent
542533c229
commit
ffea5061f0
45
src/main.c
45
src/main.c
@ -51,7 +51,7 @@ int main(int argc, char **argv)
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char *filename = NULL;
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uint32_t frequency = 0, samp_rate = 2048000;
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uint8_t buffer[READLEN];
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uint32_t n_read;
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uint32_t n_read;
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FILE *file;
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rtlsdr_dev_t *dev = NULL;
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@ -75,19 +75,19 @@ int main(int argc, char **argv)
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filename = argv[optind];
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}
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rtlsdr_init();
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rtlsdr_init();
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int device_count = rtlsdr_get_device_count();
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if (!device_count) {
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fprintf(stderr, "No supported devices found.\n");
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exit(1);
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}
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int device_count = rtlsdr_get_device_count();
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if (!device_count) {
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fprintf(stderr, "No supported devices found.\n");
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exit(1);
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}
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printf("Found %d device(s).\n", device_count);
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printf("Found %d device(s).\n", device_count);
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dev = rtlsdr_open(0); /* open the first device */
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dev = rtlsdr_open(0); /* open the first device */
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if (NULL == dev) {
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fprintf(stderr, "Failed to open rtlsdr device.\n");
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fprintf(stderr, "Failed to open rtlsdr device.\n");
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exit(1);
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}
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@ -99,16 +99,14 @@ int main(int argc, char **argv)
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sigaction(SIGQUIT, &sigact, NULL);
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/* Set the sample rate */
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r = rtlsdr_set_sample_rate(dev, samp_rate);
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if (r < 0) {
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fprintf(stderr, "WARNING: Failed to set sample rate.\n");
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}
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r = rtlsdr_set_sample_rate(dev, samp_rate);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to set sample rate.\n");
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/* Set the frequency */
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r = rtlsdr_set_center_freq(dev, frequency);
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if (r < 0) {
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fprintf(stderr, "WARNING: Failed to set center freq.\n");
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}
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to set center freq.\n");
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file = fopen(filename, "wb");
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@ -119,16 +117,15 @@ int main(int argc, char **argv)
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/* Reset endpoint before we start reading from it */
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r = rtlsdr_reset_buffer(dev);
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if (r < 0) {
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fprintf(stderr, "WARNING: Failed to reset buffers.\n");
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}
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to reset buffers.\n");
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printf("Reading samples...\n");
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while (!do_exit) {
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r = rtlsdr_read_sync(dev, buffer, READLEN, &n_read);
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if (r < 0) {
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fprintf(stderr, "WARNING: sync read failed.\n");
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}
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if (r < 0)
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fprintf(stderr, "WARNING: sync read failed.\n");
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fwrite(buffer, n_read, 1, file);
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@ -140,7 +137,7 @@ int main(int argc, char **argv)
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fclose(file);
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rtlsdr_exit();
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rtlsdr_exit();
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out:
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return r >= 0 ? r : -r;
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}
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266
src/rtl-sdr.c
266
src/rtl-sdr.c
@ -43,55 +43,56 @@ int fc0012_set_bw(void *dev, int bw) { return 0; }
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int fc0013_init(void *dev) { return FC0013_Open(dev); }
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int fc0013_exit(void *dev) { return 0; }
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int fc0013_tune(void *dev, int freq) {
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/* read bandwidth mode to reapply it */
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int bw = 0;
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//fc0013_GetBandwidthMode(dev, &bw); // FIXME: missing
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return FC0013_SetFrequency(dev, freq/1000, bw & 0xff);
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/* read bandwidth mode to reapply it */
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int bw = 0;
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//fc0013_GetBandwidthMode(dev, &bw); // FIXME: missing
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return FC0013_SetFrequency(dev, freq/1000, bw & 0xff);
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}
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int fc0013_set_bw(void *dev, int bw) {
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/* read frequency to reapply it */
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unsigned long freq = 0;
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//fc0013_GetRfFreqHz(dev, &freq); // FIXME: missing
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return FC0013_SetFrequency(dev, freq/1000, 8);
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/* read frequency to reapply it */
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unsigned long freq = 0;
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//fc0013_GetRfFreqHz(dev, &freq); // FIXME: missing
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return FC0013_SetFrequency(dev, freq/1000, 8);
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}
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enum rtlsdr_tuners {
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RTLSDR_TUNER_UNDEF,
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RTLSDR_TUNER_E4000,
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RTLSDR_TUNER_FC0012,
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RTLSDR_TUNER_FC0013
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RTLSDR_TUNER_UNDEF,
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RTLSDR_TUNER_E4000,
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RTLSDR_TUNER_FC0012,
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RTLSDR_TUNER_FC0013
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};
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typedef struct rtlsdr_tuner {
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enum rtlsdr_tuners tuner;
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int(*init)(void *);
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int(*exit)(void *);
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int(*tune)(void *, int freq /* Hz */);
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int(*set_bw)(void *, int bw /* Hz */);
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int freq; /* Hz */
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int corr; /* ppm */
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enum rtlsdr_tuners tuner;
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int(*init)(void *);
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int(*exit)(void *);
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int(*tune)(void *, int freq /* Hz */);
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int(*set_bw)(void *, int bw /* Hz */);
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int freq; /* Hz */
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int corr; /* ppm */
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} rtlsdr_tuner_t;
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rtlsdr_tuner_t tuners[] = {
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{ RTLSDR_TUNER_E4000, e4k_init, e4k_exit, e4k_tune, e4k_set_bw, 0, 0 },
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{ RTLSDR_TUNER_FC0012, fc0012_init, fc0012_exit, fc0012_tune, fc0012_set_bw, 0, 0 },
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{ RTLSDR_TUNER_FC0013, fc0013_init, fc0013_exit, fc0013_tune, fc0013_set_bw, 0, 0 },
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{ RTLSDR_TUNER_E4000, e4k_init, e4k_exit, e4k_tune, e4k_set_bw, 0, 0 },
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{ RTLSDR_TUNER_FC0012, fc0012_init, fc0012_exit, fc0012_tune, fc0012_set_bw, 0, 0 },
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{ RTLSDR_TUNER_FC0013, fc0013_init, fc0013_exit, fc0013_tune, fc0013_set_bw, 0, 0 },
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};
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struct rtlsdr_device {
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uint16_t vid;
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uint16_t pid;
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} devices[] = {
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{ 0x0bda, 0x2832, /*RTLSDR_TUNER_E4000,*/ }, /* default RTL2832U vid/pid (eg. hama nano) */
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{ 0x0bda, 0x2838, /*RTLSDR_TUNER_E4000,*/ }, /* ezcap USB 2.0 DVB-T/DAB/FM stick */
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{ 0x0ccd, 0x00b3, /*RTLSDR_TUNER_FC0013,*/ }, /* Terratec NOXON DAB/DAB+ USB-Stick */
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{ 0x1f4d, 0xb803, /*RTLSDR_TUNER_FC0012,*/ }, /* GTek T803 */
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{ 0x1b80, 0xd3a4, /*RTLSDR_TUNER_FC0013,*/ }, /* Twintech UT-40 */
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{ 0x0bda, 0x2832 }, /* default RTL2832U vid/pid (eg. hama nano) */
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{ 0x0bda, 0x2838 }, /* ezcap USB 2.0 DVB-T/DAB/FM stick */
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{ 0x0ccd, 0x00b3 }, /* Terratec NOXON DAB/DAB+ USB-Stick */
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{ 0x1f4d, 0xb803 }, /* GTek T803 */
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{ 0x1b80, 0xd3a4 }, /* Twintech UT-40 */
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};
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typedef struct {
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struct libusb_device_handle *devh;
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rtlsdr_tuner_t *tuner;
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rtlsdr_tuner_t *tuner;
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} rtlsdr_dev_t;
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#define CRYSTAL_FREQ 28800000
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@ -307,24 +308,19 @@ void rtlsdr_init_baseband(rtlsdr_dev_t *dev)
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int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq)
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{
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rtlsdr_set_i2c_repeater(dev, 1);
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rtlsdr_set_i2c_repeater(dev, 1);
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if (dev->tuner) {
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dev->tuner->freq = freq;
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if (dev->tuner) {
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dev->tuner->freq = freq;
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double f = (double) freq;
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f *= 1.0 + dev->tuner->corr / 1e6;
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dev->tuner->tune((void *)dev, (int) f);
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printf("Tuned to %i Hz\n", freq);
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}
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double f = (double) freq;
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rtlsdr_set_i2c_repeater(dev, 0);
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f *= 1.0 + dev->tuner->corr / 1e6;
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dev->tuner->tune((void *)dev, (int) f);
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printf("Tuned to %i Hz\n", freq);
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}
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rtlsdr_set_i2c_repeater(dev, 0);
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return 0;
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return 0;
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}
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int rtlsdr_get_center_freq(rtlsdr_dev_t *dev)
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@ -334,89 +330,88 @@ int rtlsdr_get_center_freq(rtlsdr_dev_t *dev)
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int rtlsdr_set_freq_correction(rtlsdr_dev_t *dev, int32_t ppm)
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{
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if (dev->tuner) {
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if (dev->tuner->corr == ppm)
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return -1;
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if (dev->tuner) {
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if (dev->tuner->corr == ppm)
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return -1;
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dev->tuner->corr = ppm;
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dev->tuner->corr = ppm;
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/* retune to apply new correction value */
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rtlsdr_set_center_freq(dev, dev->tuner->freq);
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}
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/* retune to apply new correction value */
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rtlsdr_set_center_freq(dev, dev->tuner->freq);
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}
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return 0;
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return 0;
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}
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int32_t rtlsdr_get_freq_correction(rtlsdr_dev_t *dev)
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{
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if (dev->tuner)
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return dev->tuner->corr;
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else
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return 0;
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if (dev->tuner)
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return dev->tuner->corr;
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else
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return 0;
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}
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void rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate)
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{
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uint16_t tmp;
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uint32_t rsamp_ratio;
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double real_rate;
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uint16_t tmp;
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uint32_t rsamp_ratio;
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double real_rate;
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/* check for the maximum rate the resampler supports */
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if (samp_rate > 3200000)
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samp_rate = 3200000;
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/* check for the maximum rate the resampler supports */
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if (samp_rate > 3200000)
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samp_rate = 3200000;
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rsamp_ratio = (CRYSTAL_FREQ * pow(2, 22)) / samp_rate;
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rsamp_ratio &= ~3;
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rsamp_ratio = (CRYSTAL_FREQ * pow(2, 22)) / samp_rate;
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rsamp_ratio &= ~3;
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real_rate = (CRYSTAL_FREQ * pow(2, 22)) / rsamp_ratio;
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printf("Setting sample rate: %.3f Hz\n", real_rate);
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real_rate = (CRYSTAL_FREQ * pow(2, 22)) / rsamp_ratio;
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printf("Setting sample rate: %.3f Hz\n", real_rate);
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if (dev->tuner)
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dev->tuner->set_bw((void *)dev, real_rate);
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if (dev->tuner)
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dev->tuner->set_bw((void *)dev, real_rate);
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tmp = (rsamp_ratio >> 16);
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rtlsdr_demod_write_reg(dev, 1, 0x9f, tmp, 2);
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tmp = rsamp_ratio & 0xffff;
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rtlsdr_demod_write_reg(dev, 1, 0xa1, tmp, 2);
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tmp = (rsamp_ratio >> 16);
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rtlsdr_demod_write_reg(dev, 1, 0x9f, tmp, 2);
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tmp = rsamp_ratio & 0xffff;
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rtlsdr_demod_write_reg(dev, 1, 0xa1, tmp, 2);
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}
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int rtlsdr_get_sample_rate(rtlsdr_dev_t *dev)
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{
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return 0; // TODO: implement
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return 0; // TODO: implement
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}
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int rtlsdr_init(void)
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{
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return libusb_init(NULL);
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return libusb_init(NULL);
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}
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void rtlsdr_exit(void)
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{
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libusb_exit(NULL);
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libusb_exit(NULL);
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}
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uint32_t rtlsdr_get_device_count(void)
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{
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int i, j;
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int i, j;
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libusb_device **list;
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uint32_t device_count = 0;
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struct libusb_device_descriptor dd;
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uint32_t device_count = 0;
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struct libusb_device_descriptor dd;
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ssize_t cnt = libusb_get_device_list(NULL, &list);
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for (i = 0; i < cnt; i++) {
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libusb_get_device_descriptor(list[i], &dd);
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for (i = 0; i < cnt; i++) {
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libusb_get_device_descriptor(list[i], &dd);
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for (j = 0; j < sizeof(devices)/sizeof(struct rtlsdr_device); j++ ) {
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if ( devices[j].vid == dd.idVendor && devices[j].pid == dd.idProduct ) {
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device_count++;
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}
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}
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}
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for (j = 0; j < sizeof(devices)/sizeof(struct rtlsdr_device); j++ ) {
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if (devices[j].vid == dd.idVendor && devices[j].pid == dd.idProduct)
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device_count++;
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}
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}
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libusb_free_device_list(list, 0);
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libusb_free_device_list(list, 0);
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return device_count;
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return device_count;
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}
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const char *rtlsdr_get_device_name(uint32_t index)
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@ -428,83 +423,82 @@ const char *rtlsdr_get_device_name(uint32_t index)
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if (index > cnt - 1)
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return NULL;
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/*libusb_device *device = list[index];*/
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/*libusb_device *device = list[index];*/
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libusb_free_device_list(list, 0);
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return "TODO: implement";
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return "TODO: implement";
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}
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rtlsdr_dev_t *rtlsdr_open(int index)
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{
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int r;
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int i, j;
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libusb_device **list;
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int i, j;
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libusb_device **list;
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rtlsdr_dev_t * dev = NULL;
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libusb_device *device = NULL;
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uint32_t device_count = 0;
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struct libusb_device_descriptor dd;
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libusb_device *device = NULL;
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uint32_t device_count = 0;
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struct libusb_device_descriptor dd;
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dev = malloc(sizeof(rtlsdr_dev_t));
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memset(dev, 0, sizeof(rtlsdr_dev_t));
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memset(dev, 0, sizeof(rtlsdr_dev_t));
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ssize_t cnt = libusb_get_device_list(NULL, &list);
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|
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for (i = 0; i < cnt; i++) {
|
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device = list[i];
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for (i = 0; i < cnt; i++) {
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device = list[i];
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libusb_get_device_descriptor(list[i], &dd);
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libusb_get_device_descriptor(list[i], &dd);
|
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|
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for (j = 0; j < sizeof(devices)/sizeof(struct rtlsdr_device); j++ ) {
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if ( devices[j].vid == dd.idVendor && devices[j].pid == dd.idProduct ) {
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device_count++;
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for (j = 0; j < sizeof(devices)/sizeof(struct rtlsdr_device); j++ ) {
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if ( devices[j].vid == dd.idVendor && devices[j].pid == dd.idProduct ) {
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device_count++;
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if (index == device_count - 1)
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break;
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}
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}
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if (index == device_count - 1)
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break;
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}
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}
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if (index == device_count - 1)
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break;
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if (index == device_count - 1)
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break;
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device = NULL;
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}
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device = NULL;
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}
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if (!device)
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goto err;
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if (!device)
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goto err;
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r = libusb_open(device, &dev->devh);
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if (r < 0) {
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libusb_free_device_list(list, 0);
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fprintf(stderr, "usb_open error %d\n", r);
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goto err;
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}
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r = libusb_open(device, &dev->devh);
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if (r < 0) {
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libusb_free_device_list(list, 0);
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fprintf(stderr, "usb_open error %d\n", r);
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goto err;
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}
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libusb_free_device_list(list, 0);
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libusb_free_device_list(list, 0);
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unsigned char buffer[256];
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unsigned char buffer[256];
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libusb_get_string_descriptor_ascii(dev->devh, 0, buffer, sizeof(buffer));
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printf("sn#: %s\n", buffer);
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|
||||
libusb_get_string_descriptor_ascii(dev->devh, 0, buffer, sizeof(buffer) );
|
||||
printf("sn#: %s\n", buffer);
|
||||
libusb_get_string_descriptor_ascii(dev->devh, 1, buffer, sizeof(buffer));
|
||||
printf("manufacturer: %s\n", buffer);
|
||||
|
||||
libusb_get_string_descriptor_ascii(dev->devh, 1, buffer, sizeof(buffer) );
|
||||
printf("manufacturer: %s\n", buffer);
|
||||
libusb_get_string_descriptor_ascii(dev->devh, 2, buffer, sizeof(buffer));
|
||||
printf("product: %s\n", buffer);
|
||||
|
||||
libusb_get_string_descriptor_ascii(dev->devh, 2, buffer, sizeof(buffer) );
|
||||
printf("product: %s\n", buffer);
|
||||
r = libusb_claim_interface(dev->devh, 0);
|
||||
if (r < 0) {
|
||||
fprintf(stderr, "usb_claim_interface error %d\n", r);
|
||||
goto err;
|
||||
}
|
||||
|
||||
r = libusb_claim_interface(dev->devh, 0);
|
||||
if (r < 0) {
|
||||
fprintf(stderr, "usb_claim_interface error %d\n", r);
|
||||
goto err;
|
||||
}
|
||||
rtlsdr_init_baseband(dev);
|
||||
|
||||
rtlsdr_init_baseband(dev);
|
||||
|
||||
// TODO: probe the tuner and set dev->tuner member to appropriate tuner object
|
||||
// dev->tuner = &tuners[...];
|
||||
// TODO: probe the tuner and set dev->tuner member to appropriate tuner object
|
||||
// dev->tuner = &tuners[...];
|
||||
|
||||
return dev;
|
||||
err:
|
||||
@ -514,12 +508,10 @@ err:
|
||||
int rtlsdr_close(rtlsdr_dev_t *dev)
|
||||
{
|
||||
libusb_release_interface(dev->devh, 0);
|
||||
|
||||
libusb_close(dev->devh);
|
||||
|
||||
free(dev);
|
||||
|
||||
return 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int rtlsdr_reset_buffer(rtlsdr_dev_t *dev)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user