Failing to Detect on LE Scan

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Dylan Holmes
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Failing to Detect on LE Scan

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.

Everything works fine when I am in my 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

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Gongyu_Dialog
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Null device means the address

Null device means the address still can be obtained but no device name is displayed?

Dylan Holmes
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No, NULL device meaning the

No, NULL device meaning the software object that represents the device is null.

So, everything is null: Name, address, etc.

Gongyu_Dialog
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quite strange, have you

quite strange, have you measured the RF and power output performance?

Dylan Holmes
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No. However, we have done

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.

Jelphi
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Hi,

Hi,

Did this happen on one device or a couple of devices?

 

 

Dylan Holmes
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This has happened across a

This has happened across a couple different pieces of hardware, and a couple different phones.

Joacimwe
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How have you set up your ble

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.

Dylan Holmes
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Not entirely sure what you

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.