Bidirectional UART BLE transfer problem

[Avi]

I have a working pair of 52840 which transfer data in one direction (at 38Kbps). I want to transfer data in the opposite direction (in lower bitrate), but I find that that data is not always received

I suspect that the Antenna is "busy:" with the high bit rate and cannot find enough time to allow an opposite direction transfer.

How can I give priority to the lower bit rate side? 

[Hung Bui]

Hi Avi, 

Please give more information on how you found the data was not always received ? BLE is a reliable protocol, if you have successfully queued the data, it will be sent and acked otherwise it will be re-transmitted. 

Please try to capture a sniffer trace of the connection to have a more detailed look at the issue. 

[Avi]

It was a problem in my receive packet code. Indeed, the data from the BLE is received correctly.  

[Hung Bui]

Have you found the bug and how to fix it ? 

[Avi]

Yes, the problem was in the controller that reads the data coming out from the Nordic UART output

So, all is working now correctly

Thank you

Avi