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本文以AT89C5 1单片机为核心 ,设计实现了具有双口 2 32或双口 4 85的通信协议转换系统。详细介绍了该系统的硬件组成 ,上、下位机的通信协议及软件实现
In this paper, AT89C5 1 microcontroller as the core, designed and implemented with a dual-port 2 32 or dual-port 485 communication protocol conversion system. Described in detail the hardware components of the system, the upper and lower computer communication protocol and software implementation