pc-ble-driver Can't Re-open RPC module after closing it

[xhe]

Hi guys, I compile a provided example with my nRF51_DK and it works well. But when I re-run the program, it will be block in function "sd_rpc_open()". The only solution is unplug and replug the USB of nRF51_DK.

I can make sure that the program was correctly closed, and when re-run the program, the serial link configuraion has no problem.

I did not change anything from example code, so it should work.

Anyone has some idea?

Thanks

[Bjørn Inge]

Hi,
pc-ble-driver 0.5.0 has known issues which may cause problems when reopening the port. Unplugging the usb should normally not be necessary if you reset the chip before reopening, either with reset button or by calling nrfjprog --reset.
The next version of pc-ble-driver will include an improved transport layer which removes this problem and removes the need to reset the chip.

[xhe]

Thanks for your help!

[jon]

Do you know when the next version of pc-ble-driver will be released? This bug has been around for a long time now.

[Bjørn Inge]

Hi,
the bug has actually been fixed though a new release with prebuilt binaries has not been created yet. If you are willing to build from source you can go to pc-ble-driver on github, or you can use the new pc-ble-driver-py which is also available as a Python pip package (pip install pc-ble-driver-py).

[jon]

Awesome. Thank you so much! The new architecture for the python driver is much better than the old one. Note to anyone else reading this, the pc-ble-driver-py on pypi.python.org is different than the ble-driver-win on Nordic's site, even though both are version 0.5.0.