This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/UmTRX@lists.osmocom.org/.
Alexander Chemeris alexander.chemeris at gmail.comAndrew Karpenkov -- do you already have support for UmTRXv2 in the FPGA code? If we get our units from customs by Fri I want to test them during the weekend hackathon. On Thu, Sep 13, 2012 at 2:40 AM, Alexander Chemeris <alexander.chemeris at gmail.com> wrote: > Hi all, > > Some good news for today. We've had a small fairwaves hackathon here > in Moscow and we've done a good progress in UmTRX development. I'm > quite exhausted, thus in short: > > 1. A software issue has been fixed in PLL tuning code. It works > reliably now. Previously it didn't correctly handle edge cases when > the best VCOCAP value was at the end of a range. > 2. A software issue has been fixed in automatic LMS calibration code. > Turns out a process described in the datasheet is not complete - you > have read FAQ, question 4.7 for an amendment. > 3. Now we correctly select Rx input. You have to change _two_ > registers to do that - 0x75 and 0x25. This wasn't obvious from the > brief reading of the manual. > 4. A hardware bug was fixed - RF diversity switch required a bias to > work correctly. Luckily we decided to move the switch from the main > board to a frontend in the rev2 of UmTRX. So we don't have to re-make > the UmTRX schematics. > > Huge thanks to Andrey Sviyazov ("RF guy"), Andrew Karpenkov ("FPGA > guy") and Srdjan Milenkovic ("remote LimeMicro guy") for going through > all the issues. > > Fixes for the code will be pushed to github in the next few days after > I clean it up. > > PS Another good news is that we should have first UmTRXv2 units on > hands in the next few days, when we get them from customs. Can't wait > to put my hands on them. > > -- > Regards, > Alexander Chemeris. > CEO, Fairwaves LLC / ООО УмРадио > http://fairwaves.ru -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru