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bladeRF support in osmo-trx

Posted: Mon Jan 23, 2023 4:20 pm
by remi
A recent commit in osmo-trx adds support for the bladeRF xa4:

https://gitea.osmocom.org/cellular-infr ... b35818ce06

The commit message points to some limitations:

1) main clock is not a gsm multiple, so it will continously drift
2) small buffer sizes lead to tx gaps that are hard to detect and break everything.

Are these real limitations with the xa4 hardware?

Re: bladeRF support in osmo-trx

Posted: Wed Feb 15, 2023 4:50 am
by robert.ghilduta
The main clock of the bladeRF 2.0 micro xA4 is 38.4MHz. I'm not quite sure what would qualify as a GSM multiple, but the bladeRF 2.0 micro's crystal based clock is fairly accurate and should not drift more than any other crystal oscillator.

The buffer sizes are a software configuration and in this case look relatively large. I think the commit takes that issue into account by selecting good buffer sizes.

Re: bladeRF support in osmo-trx

Posted: Wed Jan 24, 2024 12:32 am
by flangedislike
Can you suggest a suitablebasketball stars cache size?