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Android Template App: Problems with reconnection

Hephaestus

We are using the Android nRF toolbox v2.4.0 and have successfully implemented the Template app. The app will reliably connect with our device and functions well. The only problem is when we disconnect.
After a successful connection and disconnection, when the Connect button is pressed and the list of "Available Devices" is shown, our device is not shown.
If I restart the app, our device will always be listed.
Sequence:

  1. Press Connect. Our device is listed on the Available Device page.

  2. Choose our device. Connection is successful.

  3. Disconnect by pressing the Disconnect button. Disconnection is successful.

  4. Press Connect. Our device is not listed.

Rebooting our device has no effect on this issue. The mobile phone is a Nexus 5X with Android 7.1.1. The device is running an nRF51 with BLE 4.2. Thanks.

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  • 0

    @Kristin. Thank you for the response. Using the nRF Connect app (Android), I can connect and disconnect repeatedly without a problem. Also, if I do the following:

    1. Press Connect. Our device is listed on the Available Device page.
    2. Choose our device. Connection is successful.
    3. Disconnect by pressing the Disconnect button. Disconnection is successful.
    4. Press Connect. Our device is not listed.
    5. Reset/restart our device. Our device is still not listed.

    If our device had stopped advertising after the disconnect, then I believe that it will reengage advertising after the reboot.

  • 0 in reply to Hephaestus

    Hi, I've checked the Template in nRF Toolbox 2.4 Out-of-the-box and after disconnecting I was able to see my device on the list. That means that the scanner and disconnection worked OK. Did you do any changes in the scanner? Perhaps it doesn't show a device with the same address that was already there before, but it's something you must have written on your own. I tried the Template with HRM sample from SDK 8 (as this one was laying on my desk).

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  • 0 in reply to Hephaestus

    Hi, I've checked the Template in nRF Toolbox 2.4 Out-of-the-box and after disconnecting I was able to see my device on the list. That means that the scanner and disconnection worked OK. Did you do any changes in the scanner? Perhaps it doesn't show a device with the same address that was already there before, but it's something you must have written on your own. I tried the Template with HRM sample from SDK 8 (as this one was laying on my desk).

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