IssueTracker

Component used:core.uwb(Kotlin)

Version used:1.0.0-alpha05

Devices/Android versions reproduced on: Galaxy S series.

I am developing an app using Ranging between our UWB hardware and Jetpack UWB.

The mobile phone is the "Controlee" and our hardware is the "Controller".

If our hardware(Controller) stops ranging or removes the mobile phone from the controlee list during normal UWB ranging between the above two devices, On the mobile phone side "RangingResult.PeerDisconnected" is raised.

"RangingResult" are no longer received, but the process escapes the "collect" loop through a "throw exception" because it cannot escape itself from the "collect" loop.

I have a question here.

When "RangingResult.PeerDisconnected" occurs Is it to completely stop UWB Ranging internally? After "RangingResult.PeerDisconnected" occurs, is it impossible to perform Ranging again before obtaining a new "SessionScope"?

I removed the code that throws an exception when "RangingResult.PeerDisconnected" occurs on the mobile device so it stays in the "collect" loop, then I tried resurrecting the hardware's controller session, but no "RangingResult" was received.

job = coroutineScope.launch {
    try {
        uwbCallback?.onUwbRangingStatusChanged(true)
        sessionScope?.prepareSession(rangingParameters)?.collect { result ->
            val myId = TwrId(result.device.address.toString().replace(":", ""))
            when(result) {
                is RangingResult.RangingResultPosition -> {
                    if(result.position.distance == null || result.position.azimuth == null || result.position.elevation == null) {
                        Log.d(TAG, "Result is null")
                    } else {
                        val distance = result.position.distance!!.value
                        val azimuth = result.position.azimuth!!.value
                        val elevation = result.position.elevation!!.value

                        uwbCallback?.onTwrResult(myId, distance, azimuth, elevation)
                    }
                }
                is RangingResult.RangingResultPeerDisconnected -> {
                    //Collect loop cannot be exited without throw excetion.
                    //Remove this throw code to stay in the Collect loop and wait for the RangingResultPosition value.
                    //throw IllegalStateException("Twr Disconnect $myId")
                }
            }
        }
    } catch (e : CancellationException) {
        e.printStackTrace()
    } catch (e: Exception) {
        e.printStackTrace()
        Log.w(TAG, "$e")
        uwbCallback?.onError("Error UWB $role : $e")
    } finally {
        job = null
        role = null
        sessionScope = null
        uwbCallback?.onUwbRangingStatusChanged(false)
        Log.d(TAG, "Complete Close Session finally")
    }
}