	
	PCF8574.SDA_DIR = SDA.D0_DIR;
	PCF8574.SDA_IN = SDA.D0_IN;
	PCF8574.SDA_OUT = SDA.D0_OUT;
	PCF8574.SCL_DIR = SCL.D0_DIR;
	PCF8574.SCL_OUT = SCL.D0_OUT;
	PCF8574 =
	#include <system\common\PCF8574.txt>
	
	//--------------------------------------------
	//[i] function_void OS_init;
	public void OS_init()
	{
		PCF8574.OS_init();
	}
	//--------------------------------------------
	//[i] function_void set_data int32;
	//дһֽ
	void set_data( int32 data )
	{
		PCF8574.set_data( (uint8)(uint16)(uint)data );
	}
	//--------------------------------------------
	//[i] function_int32 get_data;
	//ȡһֽ
	int32 get_data()
	{
		uint32 data = PCF8574.read_byte();
		return (int)data;
	}