谁帮我解读下关于触摸屏TSC2046芯片涉及到的这几个C语言的子函数

unsigned long int HandShack(long int comm)
{
int i,j;
long int result;
result=0;
Tsc2046_CS=0;
Tsc2046_DCLK=0;
for(i=0;i<8;i++)
{
Tsc2046_DCLK=0;
if((comm&0x80)==0x80)
Tsc2046_DIN=1;
else
Tsc2046_DIN=0;
Tsc2046_DCLK=1;
Tsc2046_DCLK=1;
comm=comm<<1;

}
while(Tsc2046_BUSY!=0);
Delay(1);

Tsc2046_DIN=0;
Tsc2046_DCLK=1;
Tsc2046_DCLK=0;

for(j=0;j<11;j++)
{
Tsc2046_DCLK=1;

if(Tsc2046_DOUT==1)
{
result=result+1;
}
result=result<<1;
Tsc2046_DCLK=0;
}
Tsc2046_DCLK=1;

if(Tsc2046_DOUT==1)
result=result+1;
Tsc2046_DCLK=0;
Tsc2046_CS=1;
return(result);
}
///**********************************************************************
ScanPanel()
{
uint i,j;
long int a[3],b;
long int tempX,tempY;
long int xa,ya,Ydata;
long int Xdata;
for(i=0;i<3;i++)
{a[i]=HandShack(scanY_comm);
}
for(j=0;j<3;j++)
{
for(i=0;i<3;i++)
{if(a[i]>a[i+1])
{b=a[i+1];
a[i+1]=a[i];
a[i]=b;
}
}
}
tempY=a[1];
for(i=0;i<3;i++)
{a[i]=HandShack(scanX_comm);
}
for(j=0;j<3;j++)
{
for(i=0;i<3;i++)
{if(a[i]>a[i+1])
{b=a[i+1];
a[i+1]=a[i];
a[i]=b;
}
}
}
tempX=a[1];
ya=(tempY-m2+60)*400;//400
xa=(tempX-n1-5)*240;
Ydata=400-(uint)(ya/(m1-m2+90));
Xdata=240-(uchar)(xa/(n2-n1));
DDot(Xdata,Xdata,Ydata,Ydata,0xFF,0xFF);
}
ScanPanel1()
{

m1=HandShack(scanY_comm);
n1=HandShack(scanX_comm);
}
ScanPanel2()
{

m2=HandShack(scanY_comm);
n2=HandShack(scanX_comm);
}