max187.h

用于MAX187的12位AD 转换程序,附带1602液晶驱动函数

unsigned char bdata Date,Adss;
unsigned char idata point,gew,shw;

sbit clk=P2^6;
sbit cs187=P2^5;
sbit dout=P2^4;
sbit Abit=Adss^7;
sbit Abit1=Adss^0;
sbit Dbit=Date^7;
sbit Dbit1=Date^0;

void D10us(unsigned char times)    //Delay 10us
{
     unsigned char i;
     for(i=0;i<times;i++);
}


void max187()	//读出数据：ADss是高8位数据，Data位低4位＋4个0
{
	unsigned char i;
        clk=0;
        ;
	clk=1;
	;
	clk=0;
        cs187=0;
        D10us(2);
        clk=1;
        ;
        clk=0;
        Abit1=dout;
	for(i=0;i<7;i++)
	{
		Adss=Adss<<1;
                clk=1;
                ;
                clk=0;
	        Abit1=dout;
	}

        clk=1;
        ;
        clk=0;
	Dbit1=dout;

        for(i=0;i<7;i++)
	{
		Date=Date<<1;
                clk=1;
                ;
                clk=0;
                Dbit1=dout;
	}
        cs187=1;
}