cpx-host-on-uart2

[eurkaaaa]

Hello, I'm a beginner of crazyflie. Firstly, I'm grateful for your reply of the issue which was consulted on January 21st. Let me describe the problem clearly.
There are four initialization functions in cpx-host-on-part 2 are cpxUARTTransportInit(); cpxInternalRouterInit(); cpxExternalRouterInit(); cpxInit(). And cpx-host-on-part 2 is initialized as a virtual deck, that is initialized at the system service layer.
In my understanding, cpx should be an upper-layer protocol, and its initialization should not be located in the underlying position, so we extracted these four functions into UserAPP and found that it seems to communicate.
However, when we plug in the flow deck, the data displayed on the flow deck became unstable.
Moreover, I don't understand the reason of the initialization part of cpx is located in the system service layer.
I am looking forward to your reply, thank u