STM32 双串口modbus从模式,实现多主协议转换-STM32 dual serial modbus slave mode, multi-protocol conversion

STM32串口驱动(环形队列+内存动态分配+DMA+拼音检索),多功能整合，方便各种情况使用-STM32 serial driver (circular queue+ memory dynamically allocated+DMA+ phonetic search), multi-function integrated, easy to use a variety of situations