Use BLE connection from datafield?

I developed a CIQ App to get and parse data via BLE from an external device, and display the resulting values on the Garmin. The App is working stable. I used the "NordicThingy52" template for it.

But i need the values in datafields, so that they are visible during activities, like values from ANT+ sensors. I tried to modify my app, following the "NordicThingyCoinCollector" example, but found that the BLE connection breaks immediately after it is setup from a datafield.

What i need is a background process which runs while activity is running, hold the BLE connection to the device an is parsing data in global variables. Then, in the datafield, i could grab the value from the global var and display it.

Is this possible some way?

0 dpawlyk over 3 years ago in reply to jim_m_58

Are the Nordic examples provided by Garmin?

Where are the Garmin samples anyway?

0 jim_m_58 over 3 years ago in reply to dpawlyk

The Samples directory in the SDK. Yes, the Thingy52 samples are from Garmin. I first ran the samples on Garmin devices years ago. and ran the current samples on a couple devices in the last week.

0 ars.fabula over 3 years ago

Try rebooting your Edge.

I use BLE from a DF for my Insta360 remote control for touch based Edge devices. It works fine as long as the device doesn't enter sleep mode (I have an Edge Explore). Once the device enters sleep / battery saving, I need to reboot my device. I haven't been able to figure out why I have this behavior at this point.

0 CYBERMAN54 over 3 years ago in reply to ars.fabula

could you share the sourc code of your datafield app?

0 ars.fabula over 3 years ago in reply to CYBERMAN54

I'll post some extracts later in the day

0 ars.fabula over 3 years ago in reply to ars.fabula

I'm using my code in an Widget and a DF. So most of the code is in a Barrel. Here is the entry point / base app.

using Toybox.Application;
using Toybox.BluetoothLowEnergy;
using BLEBarrel;
var bleDevice;

class OneRremoteDFApp extends Application.AppBase {

    function initialize() {
        AppBase.initialize();
    }

    // onStart() is called on application start up
    function onStart(state) {
		bleDevice = new BLEBarrel.BleDevice();
		BluetoothLowEnergy.setDelegate(bleDevice);
		bleDevice.open();
    }

    // onStop() is called when your application is exiting
    function onStop(state) {
    }

    //! Return the initial view of your application here
    function getInitialView() {
        return [ new OneRremoteDFView(),new InputDelegate()];
    }

}

0 jim_m_58 over 3 years ago in reply to CYBERMAN54

I posted a very simple DF with BLE here: https://forums.garmin.com/developer/connect-iq/f/discussion/292444/ble-not-scanning-in-simulator/1434751#1434751

0 DaveBrillhart over 2 years ago in reply to ars.fabula

Sleep mode messes up a lot of things. For example, if I SLEEP my EDGE 1030, upon starting it up again, Garmin Rally Power Meter Pedals aren't seen any longer. My Polar HR Strap is seen. But I can't even disable and re-enable the Power Meter Pedals. What I need to do while riding is remove the sensor, then search for sensor again, pair it. Then it works fine. That is using ANT+. But sounds like a similar bug.