Hello folks, I had trouble with the osmo-trx-uhd and LimeSDR (like in Bug #2723), so I tried the branch "laforge/lime".
The result is that the LimeSDR apparently transmit successfully data (my MS display correctly the MCC/MNC and the spectro shows the correct frequency) but it seems that the LimeSDR/driver/not-sure-what does not receive any signal in return. I know that my complete hardware and software setup (cables, tem cell, spectro) is OK because it works fine with the Fairwaves UmTRX board.
The LimeSuiteGUI shows some problems with the RX calibration, but if I do a full reset to default settings from the GUI, it works fine (so I suppose that the problem does not come from the LimeSDR board itself). If I restart osmo-trx-lms, it cause the problem again.
Is there some specific settings to do in osmo-trx.cfg to make it work?
I know that it is a work in progress, and if you need some feedback or tests, do not hesitate to ask.
Have a nice day, Antony
Hi Antony,
On Tue, Jun 05, 2018 at 01:14:13PM +0200, Antony Lemmens wrote:
I had trouble with the osmo-trx-uhd and LimeSDR (like in Bug #2723), so I tried the branch "laforge/lime".
yes, unfortunately we haven't had much success in getting OsmoTRX to run stable with LimeSDR so far. It works like a charm with other hardware, though.
The result is that the LimeSDR apparently transmit successfully data (my MS display correctly the MCC/MNC and the spectro shows the correct frequency) but it seems that the LimeSDR/driver/not-sure-what does not receive any signal in return.
This is exactly where the development status is for us. We then got side-tracked with various problems introduced with more recent LimeSuite releases, as well as with problems related to the hardware we received at sysmocom.
Transmit didn't work reliable for us with LimeSDR-mini HW v1.0 nor with the large LimeSDR, while it did seem to work fine with LimeSDR-mini HW v1.1.
I don't think it makes sense to work on the Rx side until Tx works reliable at least on the regular LimeSDR as well as LimeSDR-mini v1.1, and preferably with latest LimeSuite releases rather than having to pin to some old versions.
It all feels like it's Lime* is currently still a very moving target. With LimeSDR-mini v1.1 (where Tx waveform looks great) we even have trouble getting the most basic LMS_Open() to work reliably, see http://osmocom.org/issues/2919#note-11 :(
I know that it is a work in progress, and if you need some feedback or tests, do not hesitate to ask.
Thanks for your offer, it's much appreciated. You could provide any feedback from testing at http://osmocom.org/issues/2919 and describe any "known working" setup of hardware (+version), gateware, limeSuite in all detail.
Regards, Harald
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Antony Lemmens -
Harald Welte