STC15W408AS_ntc_103温度检测

只看该作者 · 2016-1-17 21:45

本帖最后由 34af9uc 于 2016-1-17 21:47 编辑

void       main()
{
char a1;
unsigned char a,b,c;

      init();
      write(1,1,0x32);       write(1,2,0x30);       write(1,3,0x31);//       write(1,4,0x36);
P1ASF             =0x80;       //P1^7AD输入(该寄存器不可读)
ADC_CONTR       =0xe7;       //开AD电源转换最快选择1^7为AD
while(1)
{
      ADC_CONTR|=0x08;       //启动AD
      delay(5);
      ADC_CONTR&=0xef;       //转换标志位清除
      a=ADC_RES;
      a=~a;                      //把负数变化变成正数变化
      a1=a;
      a1=a1-90;                      //0x5a(90)0度
      if(a1>0){write(1,12,0x20);}                      //空格,清除减号
      if(a1<0){write(1,12,0x2d);a1=~a1;}       //减号;会有-0的数字
      a1=a1/1.8;             //1.8/度(实际不是成线性增长)
      b=a1/10;
      c=a1%10;
      write(1,13,b+0x30);
      write(1,14,c+0x30);
delay(100);

}
}