'Pybluez on Nano: SDP can’t be generated

I had an issue like this on my Nano:

profiles = [ SERIAL_PORT_PROFILE ],
  File "/usr/lib/python2.7/site-packages/bluetooth/bluez.py", line 176, in advertise_service
    raise BluetoothError (str (e))
bluetooth.btcommon.BluetoothError: (2, 'No such file or directory')

I tried adding compatibility mode in the bluetooth.service file, reloading daemon, restarting bluetooth and then adding a serial port by doing

sudo sdptool add SP

These steps work fine on my ubuntu 20.04 laptop, but on jetpack 4.5.1, they don’t. And I checked also, they don’t work on jetson NX either.

I am really curious on how to solve this issue, otherwise, another way to use bluetooth inside a python code is welcomed.

Thanks

Solution 1:^[1]

You might want to have a look at the following article which shows how to do the connection with core Python Socket library https://blog.kevindoran.co/bluetooth-programming-with-python-3/.

The way BlueZ does this now is with the Profile API.

There is a Python example of using the Profile API at https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/test/test-profile

hciattach, hciconfig, hcitool, hcidump, rfcomm, sdptool, ciptool, and gatttool were deprecated by the BlueZ project in 2017. If you are following a tutorial that uses them, there is a chance that it might be out of date and that Linux systems will choose not to support them.

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'Pybluez on Nano: SDP can’t be generated

Solution 1:[1]

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Solution 1:^[1]