type object 'Bluetooth' has no attribute 'BLE'

Reply to type object 'Bluetooth' has no attribute 'BLE' on Mon, 02 Apr 2018 10:34:41 GMT

luc — Mon, 02 Apr 2018 10:34:41 GMT

Hello,
I'm trying to set up a bluetooth object exactly as described in the documentation.
I type :
from network import Bluetooth
bluetooth = Bluetooth()
bluetooth.init(id=0, mode=Bluetooth.BLE, antenna=None)

And this is what I get :
Traceback (most recent call last):
File "", line 1, in
AttributeError: type object 'Bluetooth' has no attribute 'BLE'

I updated the firmware, I'm using a Lopy with a Pytrack as interface boar
I don't understand what is happening. Anybody with an idea or with the same problem ?

Sincerely yours,
Lucas

Reply to type object 'Bluetooth' has no attribute 'BLE' on Mon, 02 Apr 2018 18:48:16 GMT

jmarcelino — Mon, 02 Apr 2018 18:48:16 GMT

Hi @luc

That's actually an error in the documentation, thank you for finding it.

You don't need to do bluetooth.init(id=0, mode=Bluetooth.BLE, antenna=None), just doing bluetooth = Bluetooth() is sufficient (and also calls init)

Reply to type object 'Bluetooth' has no attribute 'BLE' on Mon, 02 Apr 2018 21:19:06 GMT

luc — Mon, 02 Apr 2018 21:19:06 GMT

Hello @jmarcelino
Thanks for the quick answer ! :)

I have another question concerning the property "antenna" (Bluetooth.EXT_ANT or Bluetooth.INT_ANT).

When I write bluetooth=Bluetooth(antenna=Bluetooth.Ext_ANT), I have no error and my script is running normally. But I don't see any concrete improvement in the RSSI of the beacons signals I'm scanning, as if this 'antenna' property had no effect at all.

Can you confirm this 'antenna' option is really doing something or it is an option that is useless for a Lopy ?
Thanks a lot,
sincerely yours,
Lucas

Reply to type object 'Bluetooth' has no attribute 'BLE' on Wed, 04 Apr 2018 08:11:17 GMT

seb — Wed, 04 Apr 2018 08:11:17 GMT

@luc
This should switch between the on-board 2.4ghz antenna and the U.FL connector near said antenna. There was an issue a few firmware versions ago where this wasnt working as expected. What firmware are you running?

Reply to type object 'Bluetooth' has no attribute 'BLE' on Wed, 04 Apr 2018 21:36:53 GMT

luc — Wed, 04 Apr 2018 21:36:53 GMT

Hi @seb ,
Thanks for your answer ! I'm using the latest firmware and an external PCB antenna. My problem is that I don't see absolutely no difference in signal RSSI and range of detection with and without PCB antenna.

Now if I have the confirmation from Pycom that this BLE property is active and running smoothly in the latest firmware, I will change my antenna for my next test :). I will post the results of my test here for information.

Cheers,

Lucas

Reply to type object 'Bluetooth' has no attribute 'BLE' on Thu, 05 Apr 2018 03:41:49 GMT

luc — Thu, 05 Apr 2018 03:41:49 GMT

Hi @seb ,
Ok, I went through some testing, using a hi-gain 2,4 GHz external antenna and there is absolutely no difference in the RSSI of the BLE received signal. I even "hot" unplugged the antenna with absolutely no change in RSSI and no complain from the Lopy board (I would not do this with a Lora antenna :) ).

Are you sure this function (Bluetooth.EXT_ANT) is really implemented for the Lopy using the latest up to date firmware ?
I bought this Lopy about 1 year ago (if this can be of any help).

Cheers and thanks,
Lucas

Reply to type object 'Bluetooth' has no attribute 'BLE' on Tue, 27 Nov 2018 17:17:43 GMT

mattliddle — Tue, 27 Nov 2018 17:17:43 GMT

@jmarcelino What is bluetooth.init(id=0, mode=Bluetooth.BLE, antenna=None) used for then?

I also noticed when I was trying to run it, that Bluetooth.BLE as the mode did not work at all.