I2C端口的FPGA实现，网上较多，但发现不少有问题，这个是在网上代码的基础上修改过，验证可行。-I2C port FPGA, online more, but found that many problems This is a code on the Internet on the basis of the revised test feasible.

模块采用网上的模块，自己进行测试，在测试过程中了解其使用方法。经过测试，存进去的数据正确读取出来。-The module uses online modules, test yourself, to understand its use in the testing process. Been tested and stored inside the data read correctly.

实现门禁系统，可以做网店实战的项目，对接数据库，不过里面没有数据库想对应的测试数据(The implementation of the entrance guard system, can do online shop actual projects, docking database, but there is no database to corresponding test data in it.)