nRF52 Ble Peripheral Example - ble_app_blinky not showing led/button service

[MPH]

Hi I have run a few peripheral examples ok and now move to evaluation of ble_peripheral also.

I'm using this version of the SDK....

If I program the softdevice and then the application hex file into board using the files shown below the led 1 turns on as expected. 

Using rfConnect I can connect to "Nordic Blinky" and the led 2 turns on and led 1 turns off. However in the list of services I see there is not one showing for the Led/Button.

Using the blinky app for Android to connect I get a message indicating the "Device does not have the required services".

I checked the code in sdk_config.h to see if the service was enabled and this looks ok...

Looking at the help for the application at this link http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk%2Fdita%2Fsdk%2Fnrf5_sdk.html

I think I have done things correctly so I am now looking for some ideas/support to move forward please.

Regards MPH

[ovrebekk]

Hi Martin

It's quite peculiar that the example advertises and connects, but doesn't show the normal services. 

Which services do you see when you connect through nRF Connect?

Are you using nRF Connect for Android, iOS or desktop?

Can you let me know which model and version of the kit you have, as printed on the white sticker?

How are you flashing the kit? 
Are you using nrfjprog, or one of the supported IDE's?

Best regards
Torbjørn

[MPH]

Hi Torbjørn

I see these services using nRF Connect for Android..

Generic Access, Generic Attribute, Blood pressure, Battery Service, Device Information.

White sticker shows..

PCA10040

1.2.4

2018.12

682351679

Flashing the kit by dragging and dropping the hex files onto the on-board drive.

Also have Segger IDE installed and can build & program the project ok from there also.

BR MPH

[ovrebekk]

Hi Martin

Please have a look at the attached screenshot. I simply add nrfblinky in the search field in logcat, setting up a custom filter should not be necessary. 

Then I can focus on the app related messages easily, and the log doesn't get overflowed with system messages. 

An interesting observation is that I can reproduce the problem with the LED characteristic. Changing the LED in the app doesn't appear to have any effect on the kit. I need some more time to look into this and discuss it with the developers. 

To summarize your issues, if you try to use the debugger in Android Studio the app won't even start?

If you don't use the debugger it works, but you are unable to control the LED?

Best regards
Torbjørn

[MPH]

Hi Torbjørn

Quick response = Yes your summary is correct in the last mail.

Thanks

BR Martin

[MPH]

Hi Torbjørn

Here is a debug log I just recorded in the attached txt file.

I used Notepad++ to highlight and mark all nrfblinky fyi.

BR Martinblinkycrash.txt

[ovrebekk]

Hi Martin

A comment from the app developer was to disable instant run in the Android Studio settings. Can you try that and see if debugging works?

Regarding the app he suggested trying the develop branch rather than the master branch, to see if it fixes the issue with the missing LED update:
https://github.com/NordicSemiconductor/Android-nRF-Blinky/tree/develop

Please give it a go and see if it helps. If it doesn't I will do more testing on my end to get to the bottom of the issue. Unfortunately I won't be able to continue this until next week, as I am going on a business trip for the next couple of days. 

Best regards
Torbjørn

[MPH]

Hi Torbjørn

Disabling Instant Run prevents an App Instant Crash, thanks for that. Now I check the latest with the develop branch.

Have a good trip.

BR Martin

[MPH]

Hi Torbjørn

So I synced with the develop branch and ran the application in debug mode but the LED behaviour is the same. So the LED is not controlled successfully from the Android App, only occasionally does it work.

BR Martin

[ovrebekk]

Hi Martin

Can you let me know the version and date string printed on your development kit?
This should be visible on the square, white sticker. 

I have an older kit that exhibits the issue, and a newer one that does not. 

Best regards
Torbjørn

[MPH]

Hi Torbjørn

I have PCA10040, 1.2.4, 2018.12, 682351679 printed on the white sticker on the dev board chip.

BR Martin

[ovrebekk]

Hi Martin

That's newer than both my kits, so I guess the old kit theory goes out the window ;)

Do you have the log enabled while running the example?
It would be interesting to know if the command is actually received or not. 

With the log running you should see a message whenever the LED is turned on or off. 

Best regards
Torbjørn

[MPH]

Don't forget I had the observation that nRF Connect App works. Meaning toggling the LED works every time. So I suspect the nRF Blinky App is at fault somehow.

BR Martin