我想让其他的 MCU 通过串口 2 传输数据到 w800 中, 参考了 demo 代码不是很清楚具体是如何操作的.
Hello! To organize communication between several MCUs via UART, you need to look towards the MODBUS protocol. This means that the network has a master controller and many slaves. There are other options for many to many communication. Via CAN interface adapters and maybe Lin or K-line
Topology is: MODBUS
Or CAN
Or Lin