UART class VS RPC Library

Hi, I am new to OpenMV.
I want an OpenMV H7 to image process an object and communicate its centroid coordinates to another microcontroller using UART interface.
The OpenMV library offers a UART class and the RPC library that also supports UART interface.
What is the difference between using the UART class and RPC library for UART interface between OpenMV H7 and another microcontroller?

The UART class is the low level transmitter. It sends bytes and receives bytes. However, syncing two systems with it is hard. The RPC library includes the software to do that for you so that you can connect two MCUs easily.

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