Response is always "None" when trying to write into a writable characteristic about bleak-winrt

[dlech]

This looks like you are using Bleak rather than using bleak-winrt directly, so you should post issues at https://github.com/hbldh/bleak instead. Even better, use https://github.com/hbldh/bleak/discussions instead of issues unless you are 90% certain there is a bug in Bleak.

It also looks like you are trying to write to every single characteristic on the device, but not all characteristics can be written, so you get an error. Just pick one characteristic and write to it.

[dimonoid]

Correct, I try to write to all of them, but none of them are successful. Error is always the same, "Access Denied" to ones which don't have writing properties, but returns successfully "None" for properties which should be writable.

But absolutely nothing goes through to the device.

[dimonoid]

Solved

I had to use "response=True", otherwise remote device wasn't receiving anything for some reason (even though I don't need confirmation that write request is successful). Also activated response on device side.

Related:
hbldh/bleak#59