有那位大神知道哪里出問題了，只顯示個位數，十位數不顯示？？？
兩位數碼管顯示溫度傳感器獲取的室內溫度
- #include<reg52.h>
- #include<intrins.h>
- #define uchar unsigned char
- #define uint unsigned int
- sbit DQ=P1^4;
- sbit P10=P1^0;
- sbit P11=P1^1;
- uchar code tab[]={0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90,0XBF,0XFF};
- uchar yi,er;
- void delayms(int ms);
- void Delay500us();
- void Delay100us();
- void allinit();
- void keyscan();
- void dsinit();
- uchar read();
- uchar temget();
- void write(uchar dat);
- void rel(uchar dong);
- void display1(uchar yi,uchar er);
- void main()
- {
- uchar wendu;
- allinit();
- yi=0;er=0;
- while(1)
- {
- wendu=temget();
- yi=wendu/10;
- er=wendu%10;
- display1(yi,er);
- }
- }
- uchar temget()
- {
- uchar temp;
- uchar low,high;
-
- dsinit();
- write(0xcc);
- write(0x44);
- Delay500us(); Delay500us();
- dsinit();
- write(0xcc);
- write(0xbe);
-
- low=read();
- high=read();
-
- temp=high<<4;//0000 0101 =0101 0000
- temp |= (low>>4); // 1010 0110 0000 0110 | 0101 0000=0101 0110
-
- return temp;
- }
- uchar read()
- {
- uchar i;
- uchar dat;
-
- for(i=0;i<8;i++)
- {
- DQ=0;
- _nop_();
- dat>>=1;
- DQ=1;
- if(DQ==1)
- {
- dat |= 0x80;// dat=dat|0x80; 0000 0000 | 1000 0000 =1000 0000
- }
- Delay100us();
- }
- return dat;
- }
- void write(uchar dat)
- {
- uchar i;
- for(i=0;i<8;i++)
- {
- DQ=0;
- DQ=dat&0x01;//0100 0100 & 0000 0001 // 0000 0001
- Delay100us();
- DQ=1;
- dat>>=1;//dat=dat>>1;//1001 0000//0010 0001
- }
- }
- void dsinit()
- {
- DQ=0;
- Delay500us();
- DQ=1;
- Delay500us();
- }
- void Delay100us() //@11.0592MHz
- {
- unsigned char i, j;
- _nop_();
- _nop_();
- i = 2;
- j = 15;
- do
- {
- while (--j);
- } while (--i);
- }
- void Delay500us() //@11.0592MHz
- {
- unsigned char i, j;
- _nop_();
- _nop_();
- i = 6;
- j = 93;
- do
- {
- while (--j);
- } while (--i);
- }
- void delayms(int ms)
- {
- int i,j;
- for(i=ms;i>0;i--)
- for(j=845;j>0;j--);
- }
- void allinit()//程序初始化
- {
- P2=0XA0;
- P0=0X00;//關閉蜂鳴器，繼電器
-
- P2=0X80;
- P0=0XFF;//關閉LED燈
-
- P2=0XC0;
- P0=0XFF;//選擇所有數碼管
- P2=0XFF;
- P0=0XFF;//關閉所有數碼管
- }
- void display1(uchar yi,uchar er)
- {
- P2=0XC0;//打開位選573 U8
- P0=0X01;//選擇第一個數碼管
- P2=0XFF;//打開段選573 U7
- P0=tab[yi];
- delayms(0.001);
-
- P2=0XC0;//打開位選573 U8
- P0=0X02;//選擇第二個數碼管
- P2=0XFF;//打開段選573 U7
- P0=tab[er];
- delayms(0.001);
- }
|
