More problems with 2 channel reception

[pothosware]

More problems with 2 channel reception

[righthalfplane]

@guruofquality

I solved this problem and troubles with transmission, by going to a simple rx_sync and tx_sync model - there was some bugs in what you had done. I think I deleted 148 lines changed 2 lines and added one line. I seems to run just as fast as what you did on the BaldeRF xA5 and it works.

https://github.com/righthalfplane/SoapyBladeRF

[guruofquality]

Thanks for trying that. There is a lot of fluff in that code to support the burst API and BLADERF_FORMAT_SC16_Q11_META mode. I kind of think there is a bladerf drive issue with that mode (and or possibly something from the API being used a little wrong here).

Im not entirely sure what to do, BLADERF_FORMAT_SC16_Q11 mode clearly works, and is simpler, and better tested. But I dont want to remove all of that support either. I wonder if I can set the BLADERF_FORMAT_SC16_Q11/BLADERF_FORMAT_SC16_Q11_META conditionally in the stream setup and just goto/if out the code you deleted based on the mode. Since a lot of it can be bypassed in continuous streaming mode.

[righthalfplane]

@guruofquality

The code you had always fails when I try to do two streams of rx. If I send the tx data in large blocks, it fails often and will not recover with out a complete shut down and setup. If I send 4096 blocks, it occasionally fails on a full duplex single stream tx and rx and It does not recover. I think that the error handling is wrong - it seems to flag the error on the current and next pass. Without all of the fluff, it automatically recovers from the occasionally errors that come when I start the tx stream and so the errors are not really a problem. When I start a tx stream, it always errors for a few blocks on the rx stream - they are in different threads - it claims to be full duplex, but it does not act like it.

[guruofquality]

@righthalfplane I pull together a pull request for this #47 . Basically I made the "meta" mode default to off for dual channel. I have no idea whats really wrong, but streaming is better than no streaming.

I agree all of the flags are basically fluff, but it looks like they don't do anything when not set. I hope that can work for you.

• PR here #47