Can't get Vernier temperature bluetooth sensor to Raspberry Pi using GoDirect library

[vincentdjojo]

The following error happens when trying to run the gdx_getting_started_bluetooth.py example:

wait for bluetooth initialization...
number of ble devices found = 1
1: GDX-TMP 0F10A381 BLE -64
Enter device number. To select multiple devices, separate with commas (no spaces): 1
attempting to open 1 device(s)...
Traceback (most recent call last):
File "/home/pi/.local/lib/python3.7/site-packages/bleak/backends/bluezdbus/client.py", line 135, in connect
).asFuture(loop)
txdbus.error.RemoteError: org.bluez.Error.Failed: Software caused connection abort

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "gdx_getting_started_bluetooth.py", line 31, in
gdx.open_ble()
File "/home/pi/Desktop/godirect-examples-master/python/gdx/gdx.py", line 153, in open_ble
open_device_success = gdx.devices[i].open()
File "/home/pi/.local/lib/python3.7/site-packages/godirect/device.py", line 102, in open
if not self._connect():
File "/home/pi/.local/lib/python3.7/site-packages/godirect/device_bleak.py", line 55, in _connect
self._loop.run_until_complete(self._async_connect())
File "/usr/lib/python3.7/asyncio/base_events.py", line 584, in run_until_complete
return future.result()
File "/home/pi/.local/lib/python3.7/site-packages/godirect/device_bleak.py", line 42, in _async_connect
await self._device.connect()
File "/home/pi/.local/lib/python3.7/site-packages/bleak/backends/bluezdbus/client.py", line 146, in connect
raise BleakError(str(e))
bleak.exc.BleakError: org.bluez.Error.Failed: Software caused connection abort

Is there a way to fix this issue with bluetooth?
Thanks.

[sswartley]

Hello,

I wonder if it is an issue with the bluez library? hbldh/bleak#94

This information on upgrading bluez might be helpful: https://scribles.net/updating-bluez-on-raspberry-pi-from-5-43-to-5-50/

[vincentdjojo]

Hello,

I wonder if it is an issue with the bluez library? hbldh/bleak#94

This information on upgrading bluez might be helpful: https://scribles.net/updating-bluez-on-raspberry-pi-from-5-43-to-5-50/

Hello sswartley. Thanks for responding to the issue. I'll get back to you soon.

[vincentdjojo]

Hello,

I wonder if it is an issue with the bluez library? hbldh/bleak#94

This information on upgrading bluez might be helpful: https://scribles.net/updating-bluez-on-raspberry-pi-from-5-43-to-5-50/

Hello sswartley.
New updates with the sensors and my Raspberry Pi 4.
I have 3 Vernier sensors:

1. Temperature Sensor
2. Calcium Sensor
3. Dissolved Oxygen Sensor.

So far, the only sensors that worked with Bluetooth is the dissolved oxygen sensor. Temperature and calcium sensors don't work with Bluetooth. However, all sensors work when wired to the Raspberry Pi 4.
I have updated bluez and I am using the latest version of bluez, just to clarify.
I think it's a problem with the library. The error remains the same: Software caused connection abort.

[sswartley]

When you say they work when "wired", do you mean they work when connected via USB to your Raspberry Pi?

For troubleshooting, you might want to make sure the Go Direct device is properly charged.
You might also want to run Graphical Analysis on your phone or computer to verify that you can connect and collect from the different devices.

[vincentdjojo]

When you say they work when "wired", do you mean they work when connected via USB to your Raspberry Pi?

For troubleshooting, you might want to make sure the Go Direct device is properly charged.
You might also want to run Graphical Analysis on your phone or computer to verify that you can connect and collect from the different devices.

@sswartley
So it's possible to connect to all my sensors using USB connection. However, the connection does not work when I use Bluetooth with the temperature sensor and the calcium sensors. I have checked the batteries of the sensors and they are working just fine. Is there any other reason for this inability of my Raspberry Pi to connect to the two sensors? Thank you.

[sswartley]

It should be able to open multiple Go Direct devices. What happens when you just try to open Go Direct Temperature by itself? For example, if you run the "gdx_getting_started_bluetooth.py" example, with just Go Direct Temperature turned on, does it scan and find it? Does it give you the option to open it? When you try and open it, does it open?

[vincentdjojo]

The following error happens when trying to run the gdx_getting_started_bluetooth.py example:

wait for bluetooth initialization...
number of ble devices found = 1
1: GDX-TMP 0F10A381 BLE -64
Enter device number. To select multiple devices, separate with commas (no spaces): 1
attempting to open 1 device(s)...
Traceback (most recent call last):
File "/home/pi/.local/lib/python3.7/site-packages/bleak/backends/bluezdbus/client.py", line 135, in connect
).asFuture(loop)
txdbus.error.RemoteError: org.bluez.Error.Failed: Software caused connection abort

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "gdx_getting_started_bluetooth.py", line 31, in
gdx.open_ble()
File "/home/pi/Desktop/godirect-examples-master/python/gdx/gdx.py", line 153, in open_ble
open_device_success = gdx.devices[i].open()
File "/home/pi/.local/lib/python3.7/site-packages/godirect/device.py", line 102, in open
if not self._connect():
File "/home/pi/.local/lib/python3.7/site-packages/godirect/device_bleak.py", line 55, in _connect
self._loop.run_until_complete(self._async_connect())
File "/usr/lib/python3.7/asyncio/base_events.py", line 584, in run_until_complete
return future.result()
File "/home/pi/.local/lib/python3.7/site-packages/godirect/device_bleak.py", line 42, in _async_connect
await self._device.connect()
File "/home/pi/.local/lib/python3.7/site-packages/bleak/backends/bluezdbus/client.py", line 146, in connect
raise BleakError(str(e))
bleak.exc.BleakError: org.bluez.Error.Failed: Software caused connection abort

Is there a way to fix this issue with bluetooth?
Thanks.

@sswartley This is what happens if I try to connect to the temperature sensor itself using Bluetooth. I was using the example you mentioned "gdx_getting_started_bluetooth.py". It does scan it and find it, but upon selecting it, the above error appears in my initial post.

[sswartley]

The error still makes it look like an error with the bluez and/or bleak library. Bleak is the library that performs the bluetooth communication. You might look at what version of bleak you are running and make sure you are updated to the most current version.

Did you take a look at the bluez discussion here?
hbldh/bleak#94