MicroPython Forum (Archive)

Hi everyone,
i am trying to connect a BLE joystick to my ESP32 with micropython. But i cannot find documentation for accepting connection from bluetooth device and get the commands from the joystick.
I understood that i have to start with: but i cannot understand how to go on. Thank you for your help.
Francesco

Hi,

I have a proof-of-concept of a HID keyboard for BLE, which I'm working on adding to https://github.com/micropython/micropyt ... /bluetooth

It's not nearly as simple as the other peripheral examples, but most of it is just configuration, and you end up with a "send_key" method.

It should be possible to adapt the HID keyboard demo into a HID joystick (or mouse). I'll try and remember to update this thread when I finish the keyboard example.

@jimmo Did you ever post that proof of concept HID keyboard? I scanned the forums and your github fork and haven't found it.

Thanks!

According to this post there's a pull request, basically meaning Jimmo's change is submitted and waiting to be integrated into the code base.

Yep, see here https://github.com/micropython/micropython/pull/6559

You can check my "mouth" mouse if you need a practical example.

https://github.com/mibragri/mouthMouse

BLE py file: https://github.com/mibragri/mouthMouse/ ... KBMouse.py

joystick py file: https://github.com/mibragri/mouthMouse/ ... oystick.py

You may need to strip some code. The joystick class includes a water flow sensor for registering puffing as clicks.

Regards
Michael

I'm using the examples above to code a HID library, but somehow my Windows box isn't receiving or registering my input reports.

My code is here: https://github.com/Heerkog/MicroPythonBLEHID

Does anyone know what I'm doing wrong?

Solved.

The issue is that the mouse example I used includes a HID report descriptor that is missing report id 1.
Without that report id, the HID report reference characteristic's id is pointing to a non-existing report.

In addition, any HID service requires the registration of
- a Device Information service with minimally the PnP id characteristic, and
- a Battery service with the Battery level characteristic.

Although Linux and Android skip over the errors raised by the missing information, Windows does not.

I'll push code later.

Hi Heerkog,
Can you please update your repository ?
Thanks in advance

Pushed! Sorry for the wait!