单片机ADC0809中文资料里 的程序有点看不懂

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前面的：

dispbuf[2]=getdata/100//左数第和毕迹一位，以唤并后数颤类推

getdata=getdata%10

dispbuf[1]=getdata/10

dispbuf[0]=getdata%10

unsigned char ADC0809(uint m)

{

unsigned char d

switch(m)

{

case 0:

A = 0

b = 0

C = 0

break

case 1:

A = 1

b = 0

C = 0

break

case 2:

A = 0

b = 1

C = 0

break

case 3:

A = 1

b = 1

C = 0

break

case 4:

A = 0

b = 0

C = 1

break

case 5:

A = 1

b = 0

C = 1

break

case 6:

A = 0

b = 1

C = 1

break

case 7:

A = 1

b = 1

C = 1

break

}

TR1=1

ALE=1ALE=0

START=1START=0

while(EOC==0)

OE=1

d=data_point

OE=0

TR1=1

return d

}

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