以mini2440开发板为载体，通过串口外界指纹模块，实现如下功能：录入指纹模版，指纹识别，删除指纹库中一段指纹，清空指纹库基本功能。首先完成串口参数的设置，根据用户对功能的选择，调用相应的函数接口实现相应的功能，各实现函数主要通过串口向指纹模块发送指令，并根据返回值进一步处理，实现相应的功能。-Mini2440 development board for the carrier, fingerprint module through the serial port to the outside world, to achieve the following functions: Input fingerprint template, fingerprint identification, delete the fingerprint library for some fingerprints, empty fingerprint database. The first complete set of serial port parameters, call the appropriate function interface based on user selected function, the corresponding function, each function mainly through the serial port to send commands to the fingerprint module, and further processed according to the return value, the corresponding function.