sdk14 ble_app_uart not working

[robotjosh]

I am evaluating the sdk14 ble_app_uart example. I am able to run this code and connect to this uart service but do not see messages get passed to the uart pin. Only when I power cycle the nrf, then it transmits all of the messages I tried to send before. Is there something I can do to make this work correctly and transmit immediately after writing the characteristic?

[Jørgen Holmefjord]

How did you test the example? Are you testing against phone or other board? Which terminal software are you using? I'm not able to reproduce this issue with my board and phone.

[robotjosh]

I am using PCA10040 and flashed with all default options from sdk14. To rule out uart software, I attached a logic probe and am seeing the same behavior. I used a phone with nrfconnect app and also tried with blescan app with same results.

[Jørgen Holmefjord]

Could you try nRF Toolbox app on the phone as well? Is the issue on transfers both to and from the phone?

[robotjosh]

I tried nrf toolbox for ble, it was able to connect and go to a uart tab, but this screen is a 3x3 grid of gray boxes that do not appear to do anything. I don't see any input to enter a uart string. The only input on this screen appears to be a disconnect button, which does not appear to do anything when pressed.

[Jørgen Holmefjord]

Try rotating the screen or slide the screen towards right side. Then you should se a terminal-like window. You can also click edit, and add commands to the gray boxes to simplify transmission of given commands.