Control through UART

Hi All!

I have the NanoPi NEO Plus2 Allwinner H5,Quad-core 64-bit high-performance Cortex A53
https://www.friendlyarm.com/index.php?route=product/product&path=69&product_id=196

My custom board include this ARM core and STM32 MCU, i use UART port for control the board (linux console)…

How i can use all functions of volumio without TCP\IP sockets, locally through UART?