说明：  由于海思Hi3513自带的I2C接口已做其它用途，但现在设备需要用I2C接口连接其它芯片，所以，用GPIO模拟了一个I2C接口，附件为源代码,所用的开发语言为C语言。
(As Hass Hi3513 comes with I2C interface has been done for other purposes, but now the device needs to connect with other chip I2C interface, so GPIO simulated using an I2C interface, attachment to the source code, using a development language is C language.)