The Design of Subway Station Console Extension Module

Subway station (hereinafter referred to as station) is composed of main module and extended module, this article is mainly to the design of extension module. The extension module adopts the STM32F107VCT6 single-chip microcomputer based on the ARM architecture control buttons scanning and the LED bright, then transmitting to the main module which is in A8 core control ARM board, whose communication with the extended module is through a serial port communication, the design of extension module in this paper can infinite extension under the condition of the power supply unlimited. This design is through the construction of the hardware circuit and software programming to realize the function of the extension module, it is designed according to the actual situation, acquiring a lot of application in practice.