UmTRX July 2012

umtrx@lists.osmocom.org

12 participants
17 discussions

UmTRX dual-channel Rx
by Andrey Sviyazov 21 Jul '12

21 Jul '12

Hi all. I found that both Rx divercity switches have zero state for A and B control inputs. Thus both LNA and LNA-D connectors are not switched to Rx inputs of the LMS's. To proceed Rx testing I suggest to set the next fixed states in the FPGA: DIVSW1_P = 1, DIVSW1_N = 0, DIVSW2_P = 1, DIVSW2_N = 0. In this case LMS1 will be switched to LNA connector, but LMS2 to LNA-D. Andrew Karpenkov, would you please to make this kind changes, until DIVSW will controled by host? Best regards, Andrey Sviyazov.

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Attachment size
by Alexander Chemeris 21 Jul '12

21 Jul '12

Hi all, I've set maximum message size for this mailing list to 1Mb. This means that you can't send big files or images to this mailing list. If you need to do so - upload files to some external server and provide a link. Project members could use our project hosting, others could upload to some other public services. At the same time limitation of 1Mb should be big enough to allow you to post screenshots of your measurements, schematics pictures, etc. Please make sure that you send big files as an attachments, even if they are textual. Subscribers (myself included) sometimes work from GPRS/EDGE connections and downloading huge e-mails is a true pain. -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru

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Re: Dual-channel Tx
by Andrew Karpenkov 16 Jul '12

16 Jul '12

Hi All, I added one more RX and TX units and connected them to the second LMS chip. You can find fpga sources with full supply (both, receive and transmit) of dual channel at akarpenkov/dual-channel branch of github repository. Also, we need to make some changes in HOST code: - SR_RX_FRONT0 (base adress of RX0 frontend) was changed from 24 to 20 (dec) - SR_RX_FRONT1 (base adress of RX1 frontend) was added with value = 25 (dec) - SR_TX_FRONT (base adress of TX0 frontend) was changed from 128 to 110 (dec) - SR_TX_CTRL (base adress of control logic of TX0 channel) was changed from 144 to 126 (dec) - SR_TX_DSP (base adress of DSP TX0 unit) was changed from 160 to 135 (dec) - SR_TX1_FRONT (base adress of TX1 frontend) was added with value = 145 (dec) - SR_TX1_CTRL (base adress of control logic of TX1 channel) was added with value = 161 (dec) - SR_TX1_DSP (base adress of TX1 channel) was added with value = 170 (dec) - Setting register to program the UDP TX DSP port (16 + 1 in dec) are now 32 bit wide (udp dst0 port - lower 16 bits, udp dst1 port - higher 16 bits). I sent flash for FPGA to Alexander and he must publish files on the site soon. I should say, I have not tested work of the project. Please report any issues. Regards , Andrew Karpenkov

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LMS6002D documentation
by Alexander Chemeris 16 Jul '12

16 Jul '12

Hi all, I've pushed more public documentation for LMS6002D to the repository: https://github.com/chemeris/lms6002-documentation FAQ should be very interesting for everyone - recommended reading. -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru

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Re: [rfc] git workflow model
by Alexander Chemeris 16 Jul '12

16 Jul '12

Hi, On Sun, Jul 15, 2012 at 8:48 PM, ☎ <Max.Suraev(a)fairwaves.ru> wrote: > Hello. > > I'd like to test new ML anyway so here is my question :) > > I've stumbled upon pretty interesting $subj at > http://nvie.com/posts/a-successful-git-branching-model/ (Russian translation is > available at http://habrahabr.ru/post/147260/ ). > > What do you think of it guys? Should we try to adopt it? Or at least document > whatever model we use now? I need some time to read the post, but in general it's a good idea to describe branching policy. -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru

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UmTRX prototypes cost
by Alexander Chemeris 15 Jul '12

15 Jul '12

Hi Jean-Samuel, Could you share the prices you get for UmTRX from your fab for this batch of prototypes and for the next batches? We have to understand the cost price to see what could we offer to customers. -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru

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UmTRX goes public
by Alexander Chemeris 15 Jul '12

15 Jul '12

Hi all, As UmTRX release gets closer, i want to gradually move all related documentation, discussions, news, etc to public. The plan is to move everything under the Osmocom umbrella, because it's a good neighborhood for UmTRX. Omsmocom.org server is somewhat overloaded now, so for the time being all git repos will stay at github and wiki and files will stay at Google Code. They will be moved to osmocom.org when they upgrade their server. Mailing list is not a big load, so the UmTRX public mailing list has been created as umtrx(a)lists.osmocom.org. Some of you already received subscription e-mails, everyone else is encouraged to subscribe as well. You could do that with the web interface here: http://lists.osmocom.org/cgi-bin/mailman/listinfo/umtrx Please use the public mailing list for all technical discussions from now on. "Project-mayotte" and "gsm-internal" are to be used for business and manufacturing related, private or other highly 533kr337 discussions. I'm going to publish schematics today together with some brief description of features. Public Lime documentation will be published as well. -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru

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UmTRX July 2012