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仿真原理圖如下(proteus仿真工程文件可到本帖附件中下載)
單片機(jī)源程序如下:
- #include<reg51.h>
- #include<intrins.h>
- sbit CS=P3^5;
- sbit CLK=P3^3;
- sbit DI=P3^4;
- sbit DO=P3^4;
- sbit dot=P0^5; //小數(shù)點(diǎn)
- unsigned char dat=0x00;
- unsigned char nums[]={0x00,0x00,0x00,0x00};
- unsigned char channel; //轉(zhuǎn)換通道
- unsigned char LEDS[]={0xA0,0xBB,0x62,0x2A,0x39,0x2C,0x24,0xB8,0x20,0x28}; //共陽4位數(shù)碼管段碼,字符顯示從'0'到'9'
- unsigned char ADC0832(unsigned char channel) //模數(shù)轉(zhuǎn)換
- {
- unsigned char i;
- unsigned char x=0x00;
- unsigned char y=0x00;
-
- CLK=0; //初始化
- DI=1;
- _nop_();
- CS=0;
- _nop_();
- CLK=1;
- _nop_();
-
- if(channel==0x00) //通道選擇
- { //通道0
- CLK=0;
- DI=1;
- _nop_();
- CLK=1;
- _nop_();
- CLK=0;
- DI=0;
- _nop_();
- CLK=1;
- _nop_();
- }
- else //通道1
- {
- CLK=0;
- DI=1;
- _nop_();
- CLK=1;
- _nop_();
- CLK=0;
- DI=1;
- _nop_();
- CLK=1;
- _nop_();
- }
-
- CLK=0;
- DI=1;
- for(i=0;i<8;i++) //讀取ADC0832輸出的前8位數(shù)據(jù)
- {
- x<<=1;
- _nop_();
- CLK=1;
- _nop_();
- CLK=0;
- if(DO==1)
- {
- x|=0x01;
- }
- else
- {
- x|=0x00;
- }
- }
- for(i=0;i<8;i++) //讀取ADC0832輸出的后8位數(shù)據(jù)
- {
- y>>=1;
- if(DO==1)
- {
- y|=0x80;
- }
- else
- {
- y|=0x00;
- }
- _nop_();
- CLK=1;
- _nop_();
- CLK=0;
- }
- if(x==y) //校驗(yàn),比較前8位與后8位的值
- {
- dat=x;
- }
- _nop_();
- CS=1; //釋放ADC0832
- DO=1;
- CLK=1;
- return dat;
- }
- void Convert(unsigned char dat0) //數(shù)據(jù)處理
- {
- unsigned int x;
- x=dat0*0.0196*100*5;
- nums[0]=x/1000;
- nums[1]=x%1000/100;
- nums[2]=x%1000%100/10;
- nums[3]=x%1000%100%10;
- }
- void Delay() //數(shù)碼管顯示
- {
- unsigned char i,j;
- for(i=0;i<1;i++)
- {
- for(j=0;j<121;j++);
- }
- }
- void Display()
- {
- P0=LEDS[nums[0]];
- P2=0xFE;
- Delay();
- P2=0xFF;
-
- P0=LEDS[nums[1]];
- dot=0;
- P2=0xFD;
- Delay();
- P2=0xFF;
-
- P0=LEDS[nums[2]];
- P2=0xFB;
- Delay();
- P2=0xFF;
-
- P0=LEDS[nums[3]];
- P2=0xF7;
- Delay();
- P2=0xFF;
- }
- void main()
- {
- while(1)
- {
- dat=ADC0832(channel);
- Convert(dat);
- Display();
- }
- }
復(fù)制代碼
Proteus8.8仿真下載:
51數(shù)字電壓表.7z
(25.35 KB, 下載次數(shù): 77)
2022-5-3 03:45 上傳
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