#define OSC 11059200
#define BAUDRATE 9600
sbit CLK = P1^0;
sbit DATA = P1^1;
sbit CS = P1^2;
unsigned int ADConvert(void)
{
int i;
unsigned int ad;
ad = 0;
DATA = 1;
CS = 0;
for(i=0;i<10;i++)
{
ad <<= 1;
CLK = 0;
_nop_();
_nop_();
_nop_();
CLK = 1;
if(DATA) ad |= 0x01;
else ad &= 0xFFFE;
}
CS = 1;
return ad;
}
void main(void)
{
unsigned int i,j,ad;
float adf;
TMOD = 0x20;
SCON = 0x50;
PCON |= 0x80;
TL1 = 256 - (OSC/12/16/BAUDRATE);
TH1 = 256 - (OSC/12/16/BAUDRATE);
TR1 = 1;
TI = 1;
printf(\"\\r\\nTLC1549 test starting ...\");
while(1)
{
for(j=0;j<10;j++) for(i=0;i<10000;i++);
ad = ADConvert(); // 取出上次数据，在第三个CLK开始本次取样
ad = ADConvert(); // 取出本次采样数据
adf = (ad*5.0)/1024.0;
printf(\"\\r\Sampled! Data = %04X(X),%u(D) 电压=%4.2fV \
}
}