osmocom-sdr

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1 participants
910 discussions

SDRplay rewrite w/RSP2
by Jeff Long 02 Jan '18

02 Jan '18

I picked up a SDRplay RSP2 recently, and the gr-osmosdr support needed some work. Here's a rewrite that works with RSP2 and has other improvements. When the RSP1A comes in, I'll finish support for that. No plans to pick up a RSP1, but someone can see if this works if interested. This was tested against the Nov 2017 binary blob. https://github.com/willcode/gr-osmosdr/tree/sdrplay2 ===== Complete rewrite of sdrplay support - Supports RSP2 - Will support RSP1A when hardware arrives - RSP1 is untested - Uses streaming callbacks instead of polling - Tuning, gain control imporoved, AGC supported - Better performance (one less layer of buffers)

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TCH/H decoding
by Andrew Artyushok 09 Dec '17

09 Dec '17

Hello. Question about gsm0503_tch_ahs_decode function in gsm0503_coding from libosmocore ( http://ftp.osmocom.org/api/latest/libosmocore/coding/html/group__coding.htm…) . Can you please explain wat's "int odd" mean? If it's odd frame number then which of the 8? And why to function need 8 burst if in function loop to 4?

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OsmoDevCon 2018 schedule planning
by Harald Welte 07 Dec '17

07 Dec '17

Dear Osmocom Community, [please respect the Reply-To and post all follow-up discussion to this to openbsc(a)lists.osmocom.org, so we avoid having long threads cross-posted to several mailing lists.] Like every year in early December, it is time to discuss as schedule for OsmoDevCon in the upcoming year. Note: Ths is about OsmoDevCon, the more private meeting of developers, *NOT* about OsmoCon, the public conference. == When, Who, Where == I propose the following date for OsmoDevCon 2018: April 20 - April 23rd, 2018 * Who: Active developers/contributors of Osmocom projects (as usual) * Where: IN-Berlin, Berlin (as usual) Please let me know ASAP if that proposed date works for everyone who'd want to attend. We can still change it now, but I would want to nail down the date pretty soon. == Format == After the experiment of reducing from 4 to 3 days last year (due to OsmoCon), we will again go for *four days* in 2018. However, we should clearly divide the days in a way that e.g. "GSM/3G" topics are on two days, while SDR+Other topics are on the other days, so people not interested in some topics can skip one or two days, as needed. We could even divide it further like: * 1 day 3GPP RAN (osmo-bts, osmo-bsc, osmo-pcu, virt_phy, fake_trx, ...) * 1 day 3GPP CN (osmo-msc, osmo-hlr, osmo-sip-connector, nextepc, etc.) * 2 days misc Regards, and looking forward to meeting you [again] in 2018, 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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RE: SDR board design for hand Held tactical SDR
by Shiv Shankar Gautam 05 Dec '17

05 Dec '17

Waiting for your response. Warm Regrads, Shiv Gautam | Manager Communication Systems -------------------------------------------------------------------------- -------------------------- The Tata Power Company Limited Strategic Engineering Division (Tata Power SED) 42 - 43 Electronics City Hosur Road Bengaluru 560 100 India Tel: +91 80 6785 4501 | Fax: +91 80 6785 9901 | Mobile: +91 74110 01394 Website: www.TataPowerSED.in <http://www.tatapowersed.in/> From: Shiv Shankar Gautam [mailto:ssgautam@tatapowersed.com] Sent: 21 November 2017 10:01 To: 'osmocom-sdr(a)lists.osmocom.org' Subject: SDR board design for hand Held tactical SDR We are looking for SCA compliance SDR hardware design. Please send us the design Warm Regrads, Shiv Gautam | Manager Communication Systems -------------------------------------------------------------------------- -------------------------- The Tata Power Company Limited Strategic Engineering Division (Tata Power SED) 42 - 43 Electronics City Hosur Road Bengaluru 560 100 India Tel: +91 80 6785 4501 | Fax: +91 80 6785 9901 | Mobile: +91 74110 01394 Website: www.TataPowerSED.in <http://www.tatapowersed.in/> *Disclaimer* ------------------------------------------------------------ Notice: This e-mail and / or attachments (communication) may contain information that is confidential and proprietary to The Tata Power Company Limited, Strategic Engineering Division (Tata Power SED). If you are not the intended recipient of this communication, please do not use or disseminate the information contained therein, notify the sender by e-mail or telephone and delete the communication (permanently) from your system. Any information in this communication that does not relate to the official business of Tata Power SED shall be understood as neither given nor endorsed by it. Please note that e-mails are susceptible to change and Tata Power SED shall not be liable for the improper or incomplete transmission of the information contained in this communication nor for any delay in its receipt. This communication is not guaranteed to be free from computer viruses and it is recommended that you check for all viruses before download. Print this communication only if absolutely essential. Thank you for your co-operation. ------------------------------------------------------------

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Modulation Format Enquiry
by Shuai Sun 23 Nov '17

23 Nov '17

Hello Under gnuradio platform, when I send a pure sinusoid using gr-osmocom, what is the modulation format that osmocom uses? Thank you very much. Regards Shuai

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SDR board design for hand Held tactical SDR
by Shiv Shankar Gautam 21 Nov '17

21 Nov '17

We are looking for SCA compliance SDR hardware design. Please send us the design Warm Regrads, Shiv Gautam | Manager Communication Systems -------------------------------------------------------------------------- -------------------------- The Tata Power Company Limited Strategic Engineering Division (Tata Power SED) 42 - 43 Electronics City Hosur Road Bengaluru 560 100 India Tel: +91 80 6785 4501 | Fax: +91 80 6785 9901 | Mobile: +91 74110 01394 Website: <http://www.tatapowersed.in/> www.TataPowerSED.in *Disclaimer* ------------------------------------------------------------ Notice: This e-mail and / or attachments (communication) may contain information that is confidential and proprietary to The Tata Power Company Limited, Strategic Engineering Division (Tata Power SED). If you are not the intended recipient of this communication, please do not use or disseminate the information contained therein, notify the sender by e-mail or telephone and delete the communication (permanently) from your system. Any information in this communication that does not relate to the official business of Tata Power SED shall be understood as neither given nor endorsed by it. Please note that e-mails are susceptible to change and Tata Power SED shall not be liable for the improper or incomplete transmission of the information contained in this communication nor for any delay in its receipt. This communication is not guaranteed to be free from computer viruses and it is recommended that you check for all viruses before download. Print this communication only if absolutely essential. Thank you for your co-operation. ------------------------------------------------------------

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rtl_fm bias tee
by vk4tec＠tech-software.net 19 Nov '17

19 Nov '17

Hello I am installing a satgate on the raspberry pi with an rtl dongle I use the rtl_fm from the sources and I get an error about bias tee I have had to use another source Here is my install script #!/bin/sh clear echo "VK4TEC SATGATE install" echo " " #sudo apt-get update #sudo apt-get install cmake build-essential libusb-1.0-0-dev git clone https://github.com/niofis/rtl-sdr.git cd rtl-sdr/ mkdir build cd build cmake ../ make sudo make install sudo ldconfig git clone https://www.github.com/wb2osz/direwolf cd ~/direwolf make sudo make install make install-rpi make install-conf cd ~ sudo mv sdr.old sdr.confcd ~ sudo cp sdr.conf sdr.old cd ~ sudo apt-get uninstall rtl-sdr sudo apt-get install rtl-sdr sudo apt-get install librtlsdr-dev /usr/bin/rtl_fm -f 145.825M - | direwolf -t 0 -dii -c sdr.conf -r 24000 -D 1 - Andrew Rich Nov 2017

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[PATCH] lib: fix regression on Fitipower FC0012
by David Kozub 16 Nov '17

16 Nov '17

The commit ba64a745 fixed rtlsdr_set_gpio_output() but also caused librtlsdr to stop working with (at least some) dongles with the FC0012 tuner. It seems that the FC0012 is connected to GPIO 4 while rtlsdr_open() assumes it's connected to GPIO 5. Before ba64a745 the bug in rtlsdr_set_gpio_output() caused GPIOs 3 and 4 to be set low and so everything worked. This changes the GPIO used in rtlsdr_open() from 5 to 4. At least on my dongle this fixes the regression. --- src/librtlsdr.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/librtlsdr.c b/src/librtlsdr.c index b369a5d..4fb2128 100644 --- a/src/librtlsdr.c +++ b/src/librtlsdr.c @@ -1565,11 +1565,11 @@ int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index) } /* initialise GPIOs */ - rtlsdr_set_gpio_output(dev, 5); + rtlsdr_set_gpio_output(dev, 4); /* reset tuner before probing */ - rtlsdr_set_gpio_bit(dev, 5, 1); - rtlsdr_set_gpio_bit(dev, 5, 0); + rtlsdr_set_gpio_bit(dev, 4, 1); + rtlsdr_set_gpio_bit(dev, 4, 0); reg = rtlsdr_i2c_read_reg(dev, FC2580_I2C_ADDR, FC2580_CHECK_ADDR); if ((reg & 0x7f) == FC2580_CHECK_VAL) { -- 2.14.2

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[PATCH] Revert "lib: fix direction bit in GPIO code"
by Marcus Müller 08 Nov '17

08 Nov '17

This reverts commit ba64a7459a43652354990855176a7d8dad5b9d54. The mentioned commit leads to nonfunctionality of Fitipower FC0012 dongles (tested by a small horde of students) and doesn't increase functionality on my "RTL-SDR.com" branded R820T-based dongle. --- src/librtlsdr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/librtlsdr.c b/src/librtlsdr.c index b369a5d..6c079a5 100644 --- a/src/librtlsdr.c +++ b/src/librtlsdr.c @@ -570,7 +570,7 @@ void rtlsdr_set_gpio_output(rtlsdr_dev_t *dev, uint8_t gpio) gpio = 1 << gpio; r = rtlsdr_read_reg(dev, SYSB, GPD, 1); - rtlsdr_write_reg(dev, SYSB, GPD, r & ~gpio, 1); + rtlsdr_write_reg(dev, SYSB, GPO, r & ~gpio, 1); r = rtlsdr_read_reg(dev, SYSB, GPOE, 1); rtlsdr_write_reg(dev, SYSB, GPOE, r | gpio, 1); } -- 2.13.6

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Want to do paid work on Osmocom? sysmocom is hiring
by Harald Welte 01 Nov '17

01 Nov '17

Dear Osmocom community, I would like to point out that at sysmocom, we're currently (again) hiring [1]. If you happen to have an interest in open source cellular communications and are fluent in C language development, we would love to hear from you. sysmocom probably doesn't need any introduction here, but just in case: The company was founded by Holger Freyther and Harald Welte, two of the leading OpenBSC and Osmocom developers from the very early days of the project. Today we are responsible for by far the largest number of commits to the Osmocom GSM/3G infrastructure related git repositories. Among our current priorities are automatic testing for the GPRS PCU, generalization of the OsmoMGW media gateway, support for load-based hand-over, inter-BSC hand-over as well as various improvements on the lower layers of the GPRS protocol stack. We're very dedicated to the cause in furthering the capabilities of open source cellular infrastructure from 2G to 4G. We believe in working upstream, no open core or dual licensing. If you have an interest working with an enthusiastic, strong technical and dedicated team of Osmocom hackers, please don't hesitate to let me know, best by e-mail to jobs(a)sysmocom.de Thanks, Harald p.s.: I hope this kind of message is not disturbing to anyone. I think it is important to the Osmocom project to have more paid people working on the stack, so it is justified. The positions we are seeking to fill will work [almost exclusively] on Osmocom, so it's not a random job ad but in the very interest of Osmocom, and hence on-topic for this list. [1] https://www.sysmocom.de/jobs/ -- - Harald Welte <hwelte(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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