Connect/disconnet issue

[abe]

Hi, I'm developing new project, and during test I see that, if you quicly connect/disconnect/connect.... and so on, the app seems locked...
Tu exclude my HW-FW, I tried same test using PCA10056, Nordic_Blinky sample from nRF5_SDK_16.0.0_98a08e2.
I have same result: if you try to repeat connect/disconnect/connect ... and so on , the module stops and it need to restart to make it working.
To best understand, here attached a video that shows the issue.
What's wrong? Where I mistake?
Best regards

Abele

[Carl Richard]

Hello, Abe!

I tried to reproduce the error using the same configuration as you, but did not manage it. Could you please reveal what phone and Android version you are using?
In addition, could you try to induce the error and then see if its possible to connect with another phone (just in case, too see if it could be an error with the application),

Best regards,

Carl Richard

[abe]

Hi Carl, I tried many times using HUAWEI P20 Pro phone with Android 9, but I tried some times also with other phone such as Motorola, Oppo, Samsung...
Please, take note that you must very quickly connect/disconnect/connect... leave a little pause then quickly connect/disconnect/connect...after few pauses the issue occurs

When error occurs, the device in not discoverable even for other phones

[abe]

abe said:

I tried same test using PCA10056, Nordic_Blinky sample from nRF5_SDK_16.0.0_98a08e2.

nRF Connect is version 4.22.3

[Carl Richard]

The newest version is of the nRF Connect Android app is 4.24.2. Could you try to update, if possible?

And could you give me the hardware version of your PCA10056 development kit? It is located on a white sticker on the board. (see picture)

[abe]

This my DK

[Carl Richard]

Thank you. I will try again now. 

In the meantime, do you have the opportunity to provide a log of the operation? Just use a serial terminal like termite or the likes of it.

Best regards,
Carl Richard

[abe]

A log of what?

[Carl Richard]

A log from the nRF52840. The sample outputs debug messages over UART that can be read using a serial terminal. These can be very helpful to determine what's wrong.

Best regards,
Carl Richard

[abe]

Dear Carl
I'm using nRF Connect 4.24.3 (the last available on Google Play), the DK kit (model as sent before) and the Blinky Example of nRF5_SDK_16.0.0_98a08e2.
I lock the device with half-minute of test.
The log here attached (but I think that is not helpful...)

Perhaps it will help you, when the issue occurs, the connect led is always ON

[Carl Richard]

Thank you! It seems like the application enters a state where it is locked in connected mode. 
I agree that the log was uninformative, but that could be because debug is not activated.

Could you flash the following .hex file and try again?

0285.blinky_with_dbg.hex