Hey, I have a hardware unit which uses the DA14580 in PAN1740 Bluetooth module.
And I am trying to connect to it via a custom Android application I made.
我在米时,一切工作正常y office or at home (low population areas).
However, if I go to a location with high population, such as an airport or big hotel my Android application with fail to find my hardware, it will just receive a NULL device when scanning.
Does anyone here know what exactly may be causing this (interference, improper software side handling, etc)?
Regards
Device:
Null device means the address still can be obtained but no device name is displayed?
No, NULL device meaning the software object that represents the device is null.
So, everything is null: Name, address, etc.
quite strange， have you measured the RF and power output performance?
No. However, we have done some distance testing. Under “normal” circumstances (at work) the BT range is 10+ feet. When we try this at the airport we have the phone and FBT12 less than 2 feet apart and cannot connect.
Hi,
Did this happen on one device or a couple of devices?
This has happened across a couple different pieces of hardware, and a couple different phones.
How have you set up your ble scanner in Android? There are a lot of different configurations you can do.
And I don't understand what you mean with that you get a null object. Do you mean the BluetoothDevice object you get in the scan callback is null? That really shouldn't happen.
Not entirely sure what you mean by the first two questions.
But yes like I said in the OP everything is set up properly, and we are able to make successful connections, read and write data.
Unless we are in the airport, then when I scan all I get is a null BluetoothDevice object from the scan callback, aka what I said in OP.