is it possible to code for the internal STM32WB55 chip to use it’s “proprietary wireless” capabilities ?
That would essentially be similar to Sub-GHz remotes in signal structure, just way higher in the 2.4GHz Range.
I have seen that there are Projects for 2.4GHz remotes, but with external modules. Why ? The STM32 is capable of generating signals in 2.4GHz. It does not only to BLE.