I have just received my two LimeSDR Mini boards, and to be honest I was worried a little bit when reading about issues which you guys were reporting. But I have tested both units and found that with the recent version of LimeSuite (downloaded today) they actually work fine both in GnuRadio and in custom SoapySDR-based application.
I have noticed only three non-critical problems:
- during initialization and closing of my SoapySDR-based application I see several messages of that type:
[WARNING] popping from TX, samples popped 0/1020
This actually started happening for “big” LimeSDR-USB too, when I have updated LimeSuite several months ago, but it does not seem to be causing serious problems,
- My application is supposed to transmit and receive RF bursts in a loop. At the beginning, there is a series of late packet indications, but after that everything works correctly. Once again, this started to happening with some LimeSuite update for “big” LimeSDR as well,
- During device setup, both in GNU Radio and my custom app, I am seeing following error:
[ERROR] Tx Calibration: MCU error 5 (Loopback signal weak: not connected/insufficient gain?)
This happens only for LimeSDR Mini, but then it starts streaming and to be honest I am not able to tell what kind of bad things may come from this.
Also, I am quite sure I see some difference in RF loopback (RF TX->RF RX) signal level for both of my Mini boards, but hey, as the USRPs, I am aware that this is not perfectly calibrated laboratory equipment and some differences between performance of particular boards may be expected.
After replacing two “big” LimeSDRs with hardware issues, for now it actually looks like both of my Mini boards work just fine Make sure you’ll test yours with most recent LimeSuite too!