osmocom-sdr

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904 discussions

[PATCH 0/3] allow setting BW for R820T tunners
by P 26 Apr '15

26 Apr '15

This is rework of previous post of patches for setting BW on R820T tunners. It contains only minor cleantups (fix grammar) and add function for getting BW. The one question remains whatever to keep or not BW setting support for really narrow bandwidth values. They does have a bit blurry edges and for unexperienced users can cause a bit of troubles in other hand for someone who knows what to do can be still usefull. P

1 3

needed bandwidth for sdr_tcp?
by Michael Renner 22 Apr '15

22 Apr '15

Moin, what bandwiidth is needed for sdr_tcp? Does it depend on the signal bandwiidth like CW or stereo fm? I wonder if it will work on a Respberry Pi B+ with 700kBit/s uplink. Thanks for any hint -- |Michael Renner E-mail: michael.renner(a)gmx.de | |81541 Munich Twitter: dd0ul | |Germany Don't drink as root! ESC:wq

1 0

rtl-sdr: compiling problems under windows using cygwin?
by Simon Eigeldinger 18 Apr '15

18 Apr '15

Hi all, I just tried compiling rtl-sdr under cygwin and got the following output. maybe someone has a tip for me here: $ make Scanning dependencies of target convenience_static [ 5%] Building C object src/CMakeFiles/convenience_static.dir/convenience/conve nience.c.o Linking C static library libconvenience_static.a [ 5%] Built target convenience_static Scanning dependencies of target rtlsdr_shared [ 10%] Building C object src/CMakeFiles/rtlsdr_shared.dir/librtlsdr.c.o [ 15%] Building C object src/CMakeFiles/rtlsdr_shared.dir/tuner_e4k.c.o [ 20%] Building C object src/CMakeFiles/rtlsdr_shared.dir/tuner_fc0012.c.o [ 25%] Building C object src/CMakeFiles/rtlsdr_shared.dir/tuner_fc0013.c.o [ 30%] Building C object src/CMakeFiles/rtlsdr_shared.dir/tuner_fc2580.c.o [ 35%] Building C object src/CMakeFiles/rtlsdr_shared.dir/tuner_r82xx.c.o Linking C shared library cygrtlsdr-0.dll [ 35%] Built target rtlsdr_shared Scanning dependencies of target rtl_adsb [ 40%] Building C object src/CMakeFiles/rtl_adsb.dir/rtl_adsb.c.o Linking C executable rtl_adsb.exe libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x18b): undefined reference to `rtlsdr_set_tuner_gain_mode' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x1a7): undefined reference to `rtlsdr_get_tuner_gains' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x1c8): undefined reference to `rtlsdr_get_tuner_gains' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x275): undefined reference to `rtlsdr_set_center_freq' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x2f5): undefined reference to `rtlsdr_set_sample_rate' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x375): undefined reference to `rtlsdr_set_direct_sampling' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x474): undefined reference to `rtlsdr_set_offset_tuning' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x4f4): undefined reference to `rtlsdr_set_tuner_gain_mode' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x575): undefined reference to `rtlsdr_set_tuner_gain_mode' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x58b): undefined reference to `rtlsdr_set_tuner_gain' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x651): undefined reference to `rtlsdr_set_freq_correction' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x6bc): undefined reference to `rtlsdr_reset_buffer' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x70b): undefined reference to `rtlsdr_get_device_count' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x770): undefined reference to `rtlsdr_get_device_usb_strings' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x7ff): undefined reference to `rtlsdr_get_device_usb_strings' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x83b): undefined reference to `rtlsdr_get_device_usb_strings' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x89d): undefined reference to `rtlsdr_get_device_usb_strings' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x918): undefined reference to `rtlsdr_get_device_name' libconvenience_static.a(convenience.c.o):convenience.c:(.text+0x9ca): undefined reference to `rtlsdr_get_device_name' collect2: Fehler: ld gab 1 als Ende-Status zurück src/CMakeFiles/rtl_adsb.dir/build.make:88: die Regel für Ziel „src/rtl_adsb.exe“ scheiterte make[2]: *** [src/rtl_adsb.exe] Fehler 1 CMakeFiles/Makefile2:175: die Regel für Ziel „src/CMakeFiles/rtl_adsb.dir/all“ s cheiterte make[1]: *** [src/CMakeFiles/rtl_adsb.dir/all] Fehler 2 Makefile:117: die Regel für Ziel „all“ scheiterte make: *** [all] Fehler 2 --- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. http://www.avast.com

1 0

[PATCH 1/2] Allow setting bandwidth for R820T
by Jiří Pinkava 17 Apr '15

17 Apr '15

3 6

rtl-sdr sources
by Thierry Leconte 14 Apr '15

14 Apr '15

Hi, I had a problem with rtlsdr_cancel_async. I find this fork on github that solve my problem https://github.com/pabigot/rtl-sdr nice .. And then realize that there are 46 forks of the rtl-sdr on github.... I know that's how github works , but is there somewhere an effort to merge the best of these mods ? It doesn't seems to be the case on github, but perhaps elsewhere ?

4 3

compiling rtl-sdr on windows using cygwin
by Simon Eigeldinger 14 Apr '15

14 Apr '15

Hi all, anyone could tell me how to compile rtl-sdr on windows using cygwin? i have all libs but i seem not to get any dlls and programs back. used the normal cmake and the method using a configure script. greetings, simon --- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. http://www.avast.com

2 2

fosphor GPU report - lenovo ideapad yoga13
by Chris Kuethe 05 Apr '15

05 Apr '15

$ uname -a Linux lappy 4.0.0-rc6 #1 SMP Mon Mar 30 00:01:17 PDT 2015 x86_64 x86_64 x86_64 GNU/Linux [+] Selected device: Intel(R) HD Graphics IvyBridge M GT2 100 Frames time: 3806160 us BW estimated: 13.774723 Msps $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 58 model name : Intel(R) Core(TM) i7-3537U CPU @ 2.00GHz stepping : 9 microcode : 0x17 cpu MHz : 800.000 cache size : 4096 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt bugs : bogomips : 4988.70 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 58 model name : Intel(R) Core(TM) i7-3537U CPU @ 2.00GHz stepping : 9 microcode : 0x17 cpu MHz : 804.785 cache size : 4096 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt bugs : bogomips : 4988.70 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 58 model name : Intel(R) Core(TM) i7-3537U CPU @ 2.00GHz stepping : 9 microcode : 0x17 cpu MHz : 805.957 cache size : 4096 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 apicid : 2 initial apicid : 2 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt bugs : bogomips : 4988.70 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 58 model name : Intel(R) Core(TM) i7-3537U CPU @ 2.00GHz stepping : 9 microcode : 0x17 cpu MHz : 800.000 cache size : 4096 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 apicid : 3 initial apicid : 3 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt bugs : bogomips : 4988.70 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: $ clinfo Number of platforms 1 Platform Name Intel Gen OCL Driver Platform Vendor Intel Platform Version OpenCL 1.2 beignet 1.0.1 Platform Profile FULL_PROFILE Platform Extensions cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store cl_khr_icd Platform Extensions function suffix Intel Platform Name Intel Gen OCL Driver Number of devices 1 Device Name Intel(R) HD Graphics IvyBridge M GT2 Device Vendor Intel Device Vendor ID 0x166 Device Version OpenCL 1.2 beignet 1.0.1 Driver Version 1.0.1 Device OpenCL C Version OpenCL C 1.2 beignet 1.0.1 Device Type GPU Device Profile FULL_PROFILE Max compute units 16 Max clock frequency 1000MHz Device Partition (core) Max number of sub-devices 1 Supported partition types None, None, None Max work item dimensions 3 Max work item sizes 512x512x512 Max work group size 512 Preferred work group size multiple 16 Preferred / native vector sizes char 16 / 8 short 8 / 8 int 4 / 4 long 2 / 2 half 0 / 8 (n/a) float 4 / 4 double 0 / 2 (n/a) Half-precision Floating-point support (n/a) Single-precision Floating-point support (core) Denormals No Infinity and NANs Yes Round to nearest Yes Round to zero No Round to infinity No IEEE754-2008 fused multiply-add No Support is emulated in software No Correctly-rounded divide and sqrt operations No Double-precision Floating-point support (n/a) Address bits 32, Little-Endian Global memory size 2147483648 (2GiB) Error Correction support No Max memory allocation 1073741824 (1024MiB) Unified memory for Host and Device Yes Minimum alignment for any data type 128 bytes Alignment of base address 1024 bits (128 bytes) Global Memory cache type Read/Write Global Memory cache size 8192 Global Memory cache line 128 bytes Image support Yes Max number of samplers per kernel 16 Max size for 1D images from buffer 65536 pixels Max 1D or 2D image array size 2048 images Max 2D image size 8192x8192 pixels Max 3D image size 8192x8192x2048 pixels Max number of read image args 128 Max number of write image args 8 Local memory type Global Local memory size 65536 (64KiB) Max constant buffer size 134217728 (128MiB) Max number of constant args 8 Max size of kernel argument 1024 Queue properties Out-of-order execution No Profiling Yes Profiling timer resolution 80ns Execution capabilities Run OpenCL kernels Yes Run native kernels Yes Prefer user sync for interop Yes printf() buffer size 1048576 (1024KiB) Built-in kernels __cl_copy_region_align4;__cl_copy_region_align16;__cl_cpy_region_unalign_same_offset;__cl_copy_region_unalign_dst_offset;__cl_copy_region_unalign_src_offset;__cl_copy_buffer_rect;__cl_copy_image_1d_to_1d;__cl_copy_image_2d_to_2d;__cl_copy_image_3d_to_2d;__cl_copy_image_2d_to_3d;__cl_copy_image_3d_to_3d;__cl_copy_image_2d_to_buffer;__cl_copy_image_3d_to_buffer;__cl_copy_buffer_to_image_2d;__cl_copy_buffer_to_image_3d;__cl_fill_region_unalign;__cl_fill_region_align2;__cl_fill_region_align4;__cl_fill_region_align8_2;__cl_fill_region_align8_4;__cl_fill_region_align8_8;__cl_fill_region_align8_16;__cl_fill_region_align128;__cl_fill_image_1d;__cl_fill_image_1d_array;__cl_fill_image_2d;__cl_fill_image_2d_array;__cl_fill_image_3d; Device Available Yes Compiler Available Yes Linker Available Yes Device Extensions cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store cl_khr_icd NULL platform behavior clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) Intel Gen OCL Driver clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Success [Intel] clCreateContext(NULL, ...) [default] Success [Intel] clCreateContext(NULL, ...) [other] <error: no devices in non-default plaforms> clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) Success (1) Platform Name Intel Gen OCL Driver Device Name Intel(R) HD Graphics IvyBridge M GT2 clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR) No devices found in platform clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM) No devices found in platform clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL) Success (1) Platform Name Intel Gen OCL Driver Device Name Intel(R) HD Graphics IvyBridge M GT2 ICD loader properties ICD loader Name OpenCL ICD Loader ICD loader Vendor OCL Icd free software ICD loader Version 2.2.3 ICD loader Profile OpenCL 1.2 -- GDB has a 'break' feature; why doesn't it have 'fix' too?

1 0

Patches: rtl_tcp memory fix, samplerate measure, args info
by Alexander Schultze 01 Apr '15

01 Apr '15

--- Alexander Schultze alexschultze(a)gmail.com +49 (0) 176 98109096

1 0

librtlsdr feature patch: Added a CMake option to specify the udev rules destination directory (handy for maintainers)
by Marcus Müller 21 Mar '15

21 Mar '15

2 1

R820T upper frequency ?
by friedtj 17 Mar '15

17 Mar '15

I am struggling with using some of the R820T-based dongles I bought (http://www.dx.com/p/170541). I am wondering where the specs from http://sdr.osmocom.org/trac/wiki/rtl-sdr comes from: although I am told that the operating frequency range is 24 - 1766 MHz, I am struggling to lock at 1574.2 MHz. From the datasheet (http://superkuh.com/gnuradio/R820T_datasheet-Non_R-20111130_unlocked.pdf) we are already well above the "official" operating frequency of this receiver frontend, but I nevertheless attempted to reproduce with this dongle the GPS decoding scheme I successfully implemented with E4k based dongles (for teaching purposes, I'd need a reliable supply of dongles but I only have a couple of E4k based dongles left, one of them probably damaged since the frontend is overheating). I did try to replace L9 (RF input), L2 + L6 (RF filters) and most significantly the pump charge RC circuit R8/C16 from the datasheet with high quality RF-grade components, but only managed to extend by ~60 MHz the locking range of the PLL, from 1.500 to 1.560 GHz. I am unable to to gain the last 20 MHz of reliable locking to receive GPS ! The way I measure is trivial: a frequency synthesizer generates a single tone (-35 dBm) and I look at the gnuradio FFT output. After a couple of seconds, the PLL unlocks and the visible single tone vanishes from the FFT. At 1.5 GHz the measurement is unreliable, lasts for about 1-10 seconds at 1.55 GHz, and a second at most at 1.56 GHz. The dongles never lock at 1.57 GHz, let alone 1.5742 GHz. I attempted the experiment with 3 dongles (of the 12 I have) so something is definitely wrong with either the layout of the PCB, or the information on the web page. Thanks for any info or which component to upgrade to extend the operating range (by only another 30 MHz !), JM -- JM Friedt, FEMTO-ST Time & Frequency/SENSeOR, 32 av. observatoire, 25044 Besancon, France

1 0

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