mirror/rtl-sdr-blog
1
0
Fork 0
mirror of https://github.com/rtlsdrblog/rtl-sdr-blog.git synced 2025-10-31 00:48:08 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity
195 Commits 2 Branches 18 Tags
22549e0da01c08d1cab99ce76702d93c15711e4d
Commit Graph

195 Commits

This Branch
This Branch
All Branches
Author SHA1 Message Date
Steve Markgraf
22549e0da0 rtlsdr_set_direct_sampling(): fix issue when switching between inputs 
Switching back from input 2 to 1 didn't work.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-10-07 16:24:18 +02:00
Steve Markgraf
d64c969bd6 tuner_r820t: improve tuning accuracy, allow freq correction 
We now use Hz instead of KHz for calculating the PLL
parameters, and use the actual crystal frequency in Hz,
which allows to correct the frequency error in ppm.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-10-07 02:32:14 +02:00
Steve Markgraf
4c58bf8b1a rtl_tcp: make more functions of librtlsdr accessible via tcp 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-10-06 19:47:36 +02:00
Steve Markgraf
b70c7d99f1 add function for offset tuning with zero-IF tuners 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-10-06 19:43:25 +02:00
Steve Markgraf
1e67d2a9a3 rtlsdr_demod_write_reg(): return 0 on success 
Thanks to DreamNik for reporting this issue.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-10-04 19:54:19 +02:00
Steve Markgraf
28ea914422 add new product ID 
thanks to Andrew Harrison for reporting it.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-10-04 19:53:00 +02:00
Steve Markgraf
18687916d6 tuner_fc001x: fix tuning for frequencies < 45 MHz 
This allows tuning to 27 MHz for example (civil band).
Best results are achieved when setting the gain to
very low values.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-10-03 17:19:29 +02:00
Steve Markgraf
b4e48d9555 rtlsdr_init_baseband: initialize possibly uninitialized registers 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-10-01 02:13:25 +02:00
Steve Markgraf
a48f48e3b1 correct sample frequency with ppm offset 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-10-01 01:55:46 +02:00
Steve Markgraf
35263d0df3 rtlsdr_set_direct_sampling: reset IF freq to 0 on zero-IF tuners 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-20 23:44:49 +02:00
Steve Markgraf
143b103061 tuner_fc0013: fix and improve manual LNA gain 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-20 00:47:11 +02:00
Steve Markgraf
15b9e7ef02 tuner_fc0013: setting GPIO not needed for filter selection 
The driver selects the VHF/UHF filter via I2C.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-19 06:06:09 +02:00
Steve Markgraf
a943a2ed25 tuner_fc001x: check if PLL values are within boundaries 
This fixes the issue of the FC0013 locking up at frequencies
between 928.0 and 950.0 MHz, which happened because
the numerator of the fraction exceeded its 5 bit limit.
For the tuner to behave normally again, the dongle needed
to be replugged.

For the FC0013 this now results in a small gap between
948.6 MHz and 950.0 MHz, where no valid PLL values
are existant.

For the FC0012 tuning is aborted when the maximum
frequency has been reached (948.6 MHz).

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-19 03:15:43 +02:00
Steve Markgraf
01d8d308fc disable second ADC in IF mode, make input selectable in DS-mode 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-16 16:24:58 +02:00
Steve Markgraf
519406264c make rtlsdr_close() build on win32 again 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-13 23:27:35 +02:00
Steve Markgraf
fc5881d4cd add support for direct sampling mode 
This commit adds the function rtlsdr_set_direct_sampling()
which can be used to enable/disable a mode where the
RTL2832 acts as a direct sampling receiver.

This mode disables the tuner, and by attaching a long
wire, or better, a 50Ω to 200Ω transformer and a lowpass-
filter to the In-phase ADC input (pin 1 or 2 of the RTL2832,
whereas pin 1 is at the molded dot) it is possible to listen to
shortwave radio stations. The coupling capacitors can be
left in place, but for better results they should be removed.

Tuning in this mode is done with the DDC, and since the
ADC samples with 28.8 MHz, tuning is possible from 0 to
28.8 MHz.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-13 21:53:51 +02:00
Kyle Keen
1533422f98 rtl_fm: half the oversample bugs 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-10 18:51:07 +02:00
Kyle Keen
a8e7c7b21e rtl_fm: Axiomatic's automatic termination 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-10 18:51:07 +02:00
Kyle Keen
f4a8a570c4 rtl_fm: fix auto/manual gain 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-10 18:51:07 +02:00
Kyle Keen
c792c4aeac rtl_fm: bugs found by Axiomatic, alkw0ia and cgommer 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-10 18:51:07 +02:00
Steve Markgraf
0c3c356d19 tuner_r820t: don't perform IMR calibration on init 
This takes simply too much time (almost 3 seconds)
and doesn't really seem to make any difference for our
use case.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-09 17:45:00 +02:00
Steve Markgraf
9f3f44e03b autotools: add missing header 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-08 21:42:58 +02:00
Dimitri Stolnikov
0c7ba8e03e don't install udev rules by default, as it may pollute the system 
For cmake call with -DINSTALL_UDEV_RULES=ON for the rules to be
installed during the default install/uninstall stages.

For autotools call "make install-udev-rules" or "make uninstall-udev-

The rules file will be installed to "/etc/udev/rules.d".
 2012-09-08 16:37:56 +02:00
Steve Markgraf
5a26bd51e7 add initial support for the R820T tuner 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-09-08 02:37:30 +02:00
Dimitri Stolnikov
0fb8543dde install (and uninstall) udev rules file 2012-09-02 22:15:55 +02:00
Steve Markgraf
5f88049c0c rtlsdr_i2c_rad_reg: fix uninitialized variable 
This could lead to a misdetection of the tuner on some
platforms (E4K instead of FC0013 on the raspberry pi).

Thanks to Christoph Gommel for reporting this issue.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-08-10 02:11:40 +02:00
Dimitri Stolnikov
22b9d82fb5 implement a more robust cancelation mechanism of async reader 2012-08-08 21:21:46 +02:00
Dimitri Stolnikov
b49a8336ee disable e4k enhanced mixer gain as it seems to have no effect 2012-08-05 16:35:47 +02:00
Dimitri Stolnikov
88cd4b33cf return RTLSDR_TUNER_UNKNOWN (0) on failure of rtlsdr_get_tuner_type 2012-08-02 19:32:40 +02:00
Steve Markgraf
4e2a0ea0c4 tuner_e4k: update license in header 
Changing the license of the header as well,
which had been forgotten in commit
6aec27c6d0
- "tuner_e4k: relicense driver under GPLv2+"

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-30 23:29:41 +02:00
Steve Markgraf
54fe3eca01 don't print i2c read/write errors for now 
During autodetection of the tuner they are
normal and may cause confusion.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-21 20:50:51 +02:00
Steve Markgraf
3dff6f3c26 add pid of MyGica TD312 stick 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-20 22:36:22 +02:00
Hoernchen
2b8dfe43f8 fix win32 build 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 23:01:33 +02:00
Steve Markgraf
ec925a64ad rtl_fm: disable win build for now, install rtl_fm 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 21:38:52 +02:00
Steve Markgraf
de978c3b3a rtl_fm: fix typo that caused warning 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 21:20:41 +02:00
Steve Markgraf
f7f02836c4 rtl_fm: use getopt on win32 as well 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:47:07 +02:00
Kyle Keen
374abaebb8 rtl_fm: add experimental options 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:42:03 +02:00
Kyle Keen
d2f8faa204 rtl_fm: disabling fast_atan2() for now, too noisy 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:42:03 +02:00
Kyle Keen
62cc815863 rtl_fm: crude integer atan2, around 40% faster 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:42:03 +02:00
Kyle Keen
6e80117205 rtl_fm: missed a var init 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:42:03 +02:00
Kyle Keen
d56267a42f rtl_fm: tweaks for nicer scanning 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:42:03 +02:00
Kyle Keen
c3dde1db91 rtl_fm: multithreaded and frequency scanning 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:42:03 +02:00
Kyle Keen
defa7af74b rtl_fm: broken multi freq scanning 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:42:03 +02:00
Kyle Keen
6a9f5c14c2 rtl_fm: add -E for optional lower edge tuning 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:42:03 +02:00
Kyle Keen
37f5559d1c rtl_fm: satisfactory squelch 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:42:03 +02:00
Steve Markgraf
fc390b3224 build rtl_fm 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:41:27 +02:00
Kyle Keen
6328e11da6 rtl_fm: prototype FM demod 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-17 20:40:15 +02:00
Steve Markgraf
9d0232385b add debug messages to rtlsdr_read/write_array 
Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-16 21:11:26 +02:00
Dimitri Stolnikov
42a6592e63 disable sample rate correction until we find a proper solution 2012-07-09 22:22:55 +02:00
Steve Markgraf
2ad7b39e2d rtlsdr_set_tuner_if_gain(): enable i2c repeater 
Thanks to Stefan Sydow for noticing this bug.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
 2012-07-08 23:28:31 +02:00