51单片机驱动12位AD MCP3204,含源码，Proteus仿真原理图，1602显示 -

#include<myc51.h>
#include<1602.h>
sbit clk = P1^4; // clock signel
sbit dout = P1^5; // data get out
sbit din = P1^6 ; // data put in
sbit cs = P1^7; // cs selt
void delay50ms(uint t)
{
uint j;
for(t;t>0;t--)
for(j=6245;j>0;j--);
}
sint getdata(uchar ch) //ch=0xe0 选择通道CH0； ch=0xe8 选择通道CH1；ch=0xf0 选择通道CH2；ch=0xf8 选择通道CH3；
{
sint hd=0x00,ld=0x00,dat=0x00,t;
//uchar ch=0xF8; //1 11 0 ;0 000
cs=1;
cs=0;
clk=1;
for(t=0;t<6;t++)
{
clk=0;//delay1us;
if((0x80&ch)==0x80)
din=1;//dIN=1
else
din=0;//dIN=0
ch<<=1;
clk=1;//delay1us;
}
for(t=0;t<13;t++)
{
clk=0;
hd<<=1;
clk=1;
delay1us;delay1us;delay1us;
hd|=dout;
delay1us;delay1us;delay1us;
}
cs=1;
return hd;
}
void main()
{
sint data_wendu,data_yanwu;
float outdat_wendu,outdat_yanwu;
start1602();
delay50ms(10);
goto_xy(0,0);
printf("w:");
goto_xy(0,1);
printf("Y:");
delay50ms(10);
while(1)
{
// delay50ms(10);
// delay50ms(10);
data_wendu=getdata(0xe0); //ch=0xe0 选择通道CH0； ch=0xe8 选择通道CH1；ch=0xf0 选择通道CH2；ch=0xf8 选择通道CH3；
outdat_wendu=((float)data_wendu/4095)*5;
delay50ms(1);
data_yanwu=getdata(0xe8);
outdat_yanwu=((float)data_yanwu/4095)*5;
delay50ms(1);
goto_xy(4,0);
printd(data_wendu);
goto_xy(10,0);
printdf(outdat_wendu);
goto_xy(4,1);
printd(data_yanwu);
goto_xy(10,1);
printdf(outdat_yanwu);
}
}

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