This project forked from teslahua/campus-card-consumption-system-lowermachine
校园卡刷卡消费系统的下位机设计，包括电路图和PCB设计以及基于MSP430单片机的C程序设计
下位机完成S50卡的初始化(将卡号等信息存入该卡内)，通过射频模块来读取卡号，并在12864液晶显示屏上显示,通过薄膜键盘进行扣费金额输入，出现盗刷时下位机的指示灯闪烁，蜂鸣器鸣响。
下位机软件部分基于IAR for MSP430的开发平台来开发，电路图和PCB 板的设计是基于Altium designer来设计。WIFI 模块是采用的庆科的EMW3162 Tools工具来进行配置。
整个下位机部分的视图：
(1). 电路板上所需的电子元器件（请参考电路图）
(2). 12864液晶显示屏(3.3v供电)
(3). A6 GSM短信模块
(4). MFRC522射频读写模块
(5). USB转串口
(6). S50卡和钥匙卡扣
(7). 薄膜矩阵键盘
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