BLE UART example

RE: BLE UART example

howard n2wx — Wed, 11 Jul 2018 19:34:56 GMT

Yes, the serial numbers come from the j-link labels. I put a 0 into the serial number field on my end and displayed the selection dialog mentioned in your link.

[quote userid="71259" url="~/f/nordic-q-a/36329/ble-uart-example/139778"]If that is true then should I be using two debuggers?[/quote]

I believe you have to use two, or the equivalent such as with an nRF52-DK's embedded J-link brought out to your other board.

RE: BLE UART example

Sreedhar — Wed, 11 Jul 2018 19:25:54 GMT

I do get the dialog .Looks like the serial number field is editable. I put in zero for both hoping for another popup to show up but it did not per this thread (https://devzone.nordicsemi.com/f/nordic-q-a/30732/how-to-use-two-rtt-viewers)

Where do these serial number come from ? I guess these come from the Jlink debuggers

If that is true then should I be using two debuggers?

RE: BLE UART example

howard n2wx — Wed, 11 Jul 2018 19:02:54 GMT

Oh yeah you should be seeing a dialog like this:

when you start the viewer.

RE: BLE UART example

Sreedhar — Wed, 11 Jul 2018 18:58:21 GMT

Thanks for the reply . Yes I have enabled RTT backend.

But my problem appears to be how do I force the Segger Software to see see two bLE feathers connected over USB.?

I understand it should bring up a dialog allowing me to choose a particular board but it does not . I can see an out put from the peripheral only and not the central board

RE: BLE UART example

howard n2wx — Wed, 11 Jul 2018 18:48:12 GMT

Hello Sreedhar,

Both app_uart examples log the transition to connected and disconnected states at the Info log level in ble_nus_c_evt_handler and ble_evt_handler.

In sdk_config.h confirm the RTT log backend is selected and enable logging to the Info or Debug log level to get the connection state log messages.

For ex., within the relevant #ifndef/#endif wrappers use

#define NRF_LOG_BACKEND_RTT_ENABLED 1

and maybe

#define NRF_LOG_DEFAULT_LEVEL 3

(I'm not sure if you need to set the default log level but you definitely do need to enable the RTT backend)

Best Regards, Howard