i2c抽象底层驱动构件源文件。
（1）可以通过高端C#2010串口测试程序（在“CH06_C#2010串口测试程序”文件夹中），可直接使用可执行文件
　　　 “\CH06_C#2010串口测试程序\bin\Debug\SerialPort.exe"。
　（2）开启硬件板电源前，先接好串口线，且在PC机执行串口测试程序SerialPort.exe，否则串口找不到。(The I2C abstraction layer drives the component source file.
(1) the executable file can be used directly through the high end C#2010 serial test program (in the "CH06_C#2010 serial test program" folder).
"\CH06_C#2010 serial test program \bin\Debug\SerialPort.exe".
(2) before the hardware board power is opened, the serial port line is first received, and the serial port test program SerialPort.exe is executed on the PC, otherwise the serial port can not be found.)