Bluetooth also has a protocol stack. This possibility is that it is not possible to rely solely on hardware drivers. The network has a protocol stack, and zigbee has a protocol stack. Serial communication does not require a protocol stack. Network communication is a bit more advanced, serial communication may only belong to the physical layer.
I now find that USB also has a protocol stack
Is mavlink also a protocol stack?
So do those who have bluetooth zigbee development experience on the pin requirements refer to the protocol stack?
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