osmocom-sdr

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910 discussions

gr-osmosdr and libbladerf compile failures
by Harald Welte 27 Jan '19

27 Jan '19

Hi Rey + Robert, I've just also been hit by a bug that was already filed some 5 months ago in the osmocom.org bug tracker: http://osmocom.org/issues/3512 It seems that the bladerf support to gr-osmosdr added in 2018 unconditionally accepts any libbladerf version installed and subseequently enables the support for it, only then to fails to compile as it actually appears to require a minimum version of 2.0.0 for which it doesn't check during the cmake step. I don't know much about Cmake and hence it would be great if you as the authors of the related code could find a minute to ensure that gr-osmosdr will simply not try to build bladerf support if the version of libbladerf is too old. I'm aware that I can of course manually disable bladerf support, but that's more a work-around than a proper solution, IMHO. Thanks in advance! Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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advice on ham radio operation
by Joseph Hutchins 25 Jan '19

25 Jan '19

Hi, after I make the appropriate bandpass filters, I wanted to attach the device to an antenna and try some SSB HF, maybe 10 or 20 meter band. I noticed there are no SSB examples and so I will need to write the program myself. I was contacting to ask if there is any reason that the examples use standalone binaries to interact with the fresco chip rather than writing a library for gnuradio. Did something about gnuradio make the fresco's integration with it impractical? Would I be better off proceeding by writing a gnuradio block for the Fresco sink or a standalone SSB-tx program? The novelty of demonstrating that such a cheap setup is feasible really appeals to me. Thanks, Joseph Hutchins

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[PATCH v3] Add api to get index by usb bus and port number
by Nicolas Sugino 17 Jan '19

17 Jan '19

This allows to get the device index based on the usb bus and port number Signed-off-by: Nicolas Sugino <nsugino(a)3way.com.ar> --- include/rtl-sdr.h | 12 ++++++++++++ src/librtlsdr.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 54 insertions(+) diff --git a/include/rtl-sdr.h b/include/rtl-sdr.h index 3ed13ae..d1e3c1e 100644 --- a/include/rtl-sdr.h +++ b/include/rtl-sdr.h @@ -60,6 +60,18 @@ RTLSDR_API int rtlsdr_get_device_usb_strings(uint32_t index, */ RTLSDR_API int rtlsdr_get_index_by_serial(const char *serial); +/*! + * Get device index by USB bus and port number + * + * \param bus bus number where the device is connected + * \param port port number where the device is connected + * \return device index of first device where the name matched + * \return -1 on libusb initialization failure + * \return -2 if no devices were found at all + * \return -3 if devices were found, but none with matching bus and port + */ +RTLSDR_API int rtlsdr_get_index_by_usb_bus_port(uint8_t bus, uint8_t port); + RTLSDR_API int rtlsdr_open(rtlsdr_dev_t **dev, uint32_t index); RTLSDR_API int rtlsdr_close(rtlsdr_dev_t *dev); diff --git a/src/librtlsdr.c b/src/librtlsdr.c index 89ec903..0d0804d 100644 --- a/src/librtlsdr.c +++ b/src/librtlsdr.c @@ -1436,6 +1436,48 @@ int rtlsdr_get_index_by_serial(const char *serial) return -3; } +int rtlsdr_get_index_by_usb_bus_port(uint8_t bus, uint8_t port) +{ + int r = -2, index = 0; + int i, found = 0; + libusb_context *ctx; + libusb_device **list; + struct libusb_device_descriptor dd; + uint8_t reg, dev_bus, dev_port; + ssize_t cnt; + + r = libusb_init(&ctx); + if(r < 0){ + return -1; + } + + cnt = libusb_get_device_list(ctx, &list); + if (!cnt) { + libusb_exit(ctx); + return -2; + } + + for (i = 0; i < cnt; i++) { + libusb_get_device_descriptor(list[i], &dd); + + if (find_known_device(dd.idVendor, dd.idProduct)) { + dev_bus = libusb_get_bus_number(list[i]); + dev_port = libusb_get_port_number(list[i]); + if(bus == dev_bus && port == dev_port) { + found = 1; + break; + } + index++; + } + } + + libusb_free_device_list(list, 1); + + libusb_exit(ctx); + + return found ? index : -3; +} + int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index) { int r; -- 2.13.6

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Openwebrx and direct sampling mode crash
by sm6hoc＠telia.com 15 Jan '19

15 Jan '19

Hi my friends I'w got a problem wen install direct sampling mode. When install openwebrx everything is ok up and running. The problem is when I install the direct sampling mode (Have install 3 other and no problem). This is the first Ubuntu 18.04. I copy the log here but it is only from startup script. [openwebrx-main] Configuration script not specified. I will use: "config_webrx.py" [openwebrx-main] nmux_bufsize = 602112, nmux_bufcnt = 84 [openwebrx-main] Started rtl_thread: rtl_sdr -s 2400000 -f 144250000 -p 0 -g 5 -| nmux --bufsize 602112 --bufcnt 84 --port 4951 --address 127.0.0.1 [openwebrx-main] Waiting for I/Q server to start... rtl_sdr: symbol lookup error: rtl_sdr: undefined symbol: rtlsdr_set_dithering nmux: listening on 127.0.0.1:4951 nmux: (main thread/for) end input stream, exiting. Lars SM6HOC

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gr-osmosdr / no tagged versions since 2014
by Harald Welte 09 Jan '19

09 Jan '19

Hi! today I discovered that the gr-osmosdr package in debian unstable contains a whooping list of 96 patches. This is due to the fact that since November 2014 there hasn't been any tagged versions in the repository. I'd like to suggest to tag releases a bit more often. @horizon: What about jumping to 1.0.0 right away? Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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RTL_FM on the fly updates
by Mark Russell 08 Jan '19

08 Jan '19

Good evening - I am trying to make modifications to rtl_fm so that I can change frequencies, gains, modulation types, and squelch values on the fly (and thus avoiding a restart). Its unclear to me what functions need to be called in order to apply changes to the sdr device so that I can do the above. The rtl_fm code isnt documented so I dont have much to go off of... GQRX doesnt run reliably on any RPi3's I've tried so I hoping to use a modified rtl_fm in its place. Any help would be appreciated. Thanks :)

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[PATCH v2] Add api to get index by usb bus and port number
by Nicolas Sugino 08 Jan '19

08 Jan '19

This allows to get the device index based on the usb bus and port number Signed-off-by: Nicolas Sugino <nsugino(a)3way.com.ar> --- include/rtl-sdr.h | 12 ++++++++++++ src/librtlsdr.c | 41 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 53 insertions(+) diff --git a/include/rtl-sdr.h b/include/rtl-sdr.h index 3ed13ae..d1e3c1e 100644 --- a/include/rtl-sdr.h +++ b/include/rtl-sdr.h @@ -60,6 +60,18 @@ RTLSDR_API int rtlsdr_get_device_usb_strings(uint32_t index, */ RTLSDR_API int rtlsdr_get_index_by_serial(const char *serial); +/*! + * Get device index by USB bus and port number + * + * \param bus bus number where the device is connected + * \param port port number where the device is connected + * \return device index of first device where the name matched + * \return -1 on libusb initialization failure + * \return -2 if no devices were found at all + * \return -3 if devices were found, but none with matching bus and port + */ +RTLSDR_API int rtlsdr_get_index_by_usb_bus_port(uint8_t bus, uint8_t port); + RTLSDR_API int rtlsdr_open(rtlsdr_dev_t **dev, uint32_t index); RTLSDR_API int rtlsdr_close(rtlsdr_dev_t *dev); diff --git a/src/librtlsdr.c b/src/librtlsdr.c index 89ec903..12a196f 100644 --- a/src/librtlsdr.c +++ b/src/librtlsdr.c @@ -1436,6 +1436,47 @@ int rtlsdr_get_index_by_serial(const char *serial) return -3; } +int rtlsdr_get_index_by_usb_bus_port(uint8_t bus, uint8_t port) +{ + int r = -2, index = -3; + int i; + libusb_context *ctx; + libusb_device **list; + struct libusb_device_descriptor dd; + uint8_t reg, dev_bus, dev_port; + ssize_t cnt; + + r = libusb_init(&ctx); + if(r < 0){ + return -1; + } + + cnt = libusb_get_device_list(ctx, &list); + if (!cnt) { + libusb_exit(ctx); + return -2; + } + + for (i = 0; i < cnt; i++) { + libusb_get_device_descriptor(list[i], &dd); + + if (find_known_device(dd.idVendor, dd.idProduct)) { + index == -3 ? index = 0 : index++; + dev_bus = libusb_get_bus_number(list[i]); + dev_port = libusb_get_port_number(list[i]); + if(bus == dev_bus && port == dev_port) { + break; + } + } + } + + libusb_free_device_list(list, 1); + + libusb_exit(ctx); + + return index; +} + int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index) { int r; -- 2.13.6

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[PATCH] Add api to get index by usb bus and port number
by Nicolas Sugino 04 Jan '19

04 Jan '19

This allows to get the device index based on the usb bus and port number Signed-off-by: Nicolas Sugino <nsugino(a)3way.com.ar> --- include/rtl-sdr.h | 12 ++++++++++++ src/librtlsdr.c | 41 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 53 insertions(+) diff --git a/include/rtl-sdr.h b/include/rtl-sdr.h index 3ed13ae..d1e3c1e 100644 --- a/include/rtl-sdr.h +++ b/include/rtl-sdr.h @@ -60,6 +60,18 @@ RTLSDR_API int rtlsdr_get_device_usb_strings(uint32_t index, */ RTLSDR_API int rtlsdr_get_index_by_serial(const char *serial); +/*! + * Get device index by USB bus and port number + * + * \param bus bus number where the device is connected + * \param port port number where the device is connected + * \return device index of first device where the name matched + * \return -1 on libusb initialization failure + * \return -2 if no devices were found at all + * \return -3 if devices were found, but none with matching bus and port + */ +RTLSDR_API int rtlsdr_get_index_by_usb_bus_port(uint8_t bus, uint8_t port); + RTLSDR_API int rtlsdr_open(rtlsdr_dev_t **dev, uint32_t index); RTLSDR_API int rtlsdr_close(rtlsdr_dev_t *dev); diff --git a/src/librtlsdr.c b/src/librtlsdr.c index 89ec903..eca093a 100644 --- a/src/librtlsdr.c +++ b/src/librtlsdr.c @@ -1436,6 +1436,47 @@ int rtlsdr_get_index_by_serial(const char *serial) return -3; } +int rtlsdr_get_index_by_usb_bus_port(uint8_t bus, uint8_t port) +{ + int r = -2, index = -3; + int i; + libusb_context *ctx; + libusb_device **list; + struct libusb_device_descriptor dd; + uint8_t reg, dev_bus, dev_port; + ssize_t cnt; + + r = libusb_init(&ctx); + if(r < 0){ + return -1; + } + + cnt = libusb_get_device_list(ctx, &list); + if (!cnt) { + libusb_exit(ctx); + return -2; + } + + for (i = 0; i < cnt; i++) { + dev_bus = libusb_get_bus_number(list[i]); + dev_port = libusb_get_port_number(list[i]); + + libusb_get_device_descriptor(list[i], &dd); + + if (find_known_device(dd.idVendor, dd.idProduct) && + bus == dev_bus && port == dev_port) { + index = i; + break; + } + } + + libusb_free_device_list(list, 1); + + libusb_exit(ctx); + + return index; +} + int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index) { int r; -- 2.13.6

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OsmoDevCon 2019 registration
by Harald Welte 01 Jan '19

01 Jan '19

Dear fellow Osmocom developers, I'm a bit surprised to notice that not more people have signed up for OsmoDevCon 2019. I guess it was mostly an oversight when the date was originally announced, and not a lack of interest? ;) All details about the event are available at the related wiki page at: https://osmocom.org/projects/osmo-dev-con/wiki/OsmoDevCon2019 Please enter your name at https://osmocom.org/projects/osmo-dev-con/wiki/OsmoDevCon2019#Requested in case you would like to attend. Registering early allows proper planning. Thanks! Looking forward to meeting old and new Osmocom developers in April 2019. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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fl2k on Odroid C1 & Odroid-XU
by Ioannis Makris 29 Dec '18

29 Dec '18

Hello and thanks for the amazing piece of software. Despite having managed to do much stuff with it under x64 linux, I failed miserably to make it work under ARM architecture. To be more specific, I tried the Odroid-XU usb3.0 capable board and the Odroid-C1 Usb2.0 board to no avail. Odroid XU kernel: 3.4.y Odroid-C1 kernel: 3.10.107 I used all reasonable ranges of sampling rates and here are the results: Program seems to run normally. No error codes and.. no buffer underruns at all. In my i3 laptop I get some buffer underruns but to arm I have never spotted such a message no matter what the sampling rate is. When the sampling rate is a fraction of what fl2k_test reports as maximum, I see the sampling rate spike on my spectrum analyzer (Advantest TR4132). But when I opt for fl2k_fm, I see no response whatsoever other than the enabling of the DAC visible as an increase of a few dB's of noise and a hint (3dB C/N) at the sampling frequency. I tried the binary repositories of libusb for my distribution, and I even compiled locally libusb from source - nothing changed. What could be making such a mess? I have spent over 3 days on efforts to no avail. I just want to explore upconversion possibilities but I need to encapsulate both the host and the FL2000 into a shield in order to get meaningful experimental results. Please help if you can Thanks Ioannis (John) Makris SV9OFO

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