ds18b20C程序proteus仿真

1、ip 口 口1ml P0I11AD1 PO.a.'AT'S P0 3AAD3： P0I4JAT4 PQ5JAE'5 POifcJADBR.7依07P2.1l/A9 PZAID pzarAH IPZ4/A12 P2.5/A13 P2WA14 P27/A1S28P3.RXD F3.1HXD P3.2r|NT0 P3,到府TT 3.4/10 K方不P三即破PJ TIT?口11以a 13 1金141丁VO 二GkD DS18B20測溫顯示,proteus仿真.Written by jinsongliang具體程序如下Main.c:#include<reg51.h>#

2、include"lib51V3.c"#include18b20.c#include"segv3.c"void main (void)unsigned char disp5=10,0,0,14,2;signed char temp=0;while(1)/*1、讀取溫度值*/temp=Get_Temputer();/2、顯示前處理*/if(temp<0)disp0=13;temp=-temp;disp1=temp/10;disp2=temp%10;elsedisp0=temp/100;disp1=temp/10-disp0*10;disp2=temp%

3、10;if(!disp0)/百位數(shù)不為0那么顯示,假設(shè)要顯示 0,可將其注釋掉disp0=10;/3、顯示*/Seg_Display(disp);Lib51v3.cvoid Delay_Nus (unsigned char n) (while(n-);/for (;n>0;n-);18b20.c:/*時序很重要,移植時注意延時函數(shù)*/#define B20_PORT#define B20_CHANNEL#define R_B20_CHANNEL()#define W_B20_CHANNEL_1()#define W_B20_CHANNEL_0()#define SKIP_ROM#defi

4、ne TEMPUTER_CONVERT#define READ_ROMP1/此處可以設(shè)置I/O 口0B20_PORT&(1<<B20_CHANNEL)B20_PORT|=(1<<B20_CHANNEL)B20_PORT&=(1<<B20_CHANNEL) 0xCC0x440xBE/one/*初始化函數(shù),失敗會返回1,初始化過程見注釋假設(shè)單片機(jī)讀到了數(shù)據(jù)線上的低電平“0后,還要做延時,其延時的時間從單片機(jī)發(fā)出的高電平算起最少要480微秒.之后單片機(jī)將數(shù)據(jù)線再次拉高到高電平“1后結(jié)束.*/static unsigned char Init_18b

5、20 (void)unsigned char x=0;W_B20_CHANNEL_1();Delay_Nus(8);W_B20_CHANNEL_0();Delay_Nus(81);W_B20_CHANNEL_1();Delay_Nus(14);x=R_B20_CHANNEL();/1、從單片機(jī)拉高數(shù)據(jù)線開始/6*n useconds lib51v3.c/2、單片機(jī)拉低數(shù)據(jù)線480us以上,拉高數(shù)據(jù)線,釋放/3、之后ds18b20, 1560us以后反響,拉高數(shù)據(jù)線/4、單片機(jī)讀取數(shù)據(jù)線if(x)return x;Delay_Nus(20); return x;/x=0代表復(fù)位成功/two st

6、atic void Write_18b20(unsigned char w_data) ( unsigned char i; unsigned char temp; for(i=0;i<8;i+) ( W_B20_CHANNEL_1(); temp=w_data&(1<<0);W_B20_CHANNEL_0(); 單片機(jī)從高到低,拉低 1us以上,并在15us內(nèi)產(chǎn)生寫間隙 B20_PORT=temp<<B20_CHANNEL; / 寫數(shù)據(jù),(先寫低位) Delay_Nus；/1560us 內(nèi) 18B20 采樣w_data>>=1; W_B20_

7、CHANNEL_1(); Delay_Nus(4); /three static unsigned char Read_18b20(void) ( unsigned char i; unsigned char temp; unsigned char r_data=0x00; for(i=0;i<8;i+) ( r_data>>=1; W_B20_CHANNEL_1(); W_B20_CHANNEL_0();/從高到低15us內(nèi),再到高,產(chǎn)生讀間隙Delay_Nus(1); W_B20_CHANNEL_1(); temp=B20_PORT<<(7-B20_CHANN

8、EL);/ 讀數(shù)據(jù),從低位開始temp&=(1<<7); r_data+=temp; Delay_Nus(8);/ 整個讀一位過程在 60120us)W_B20_CHANNEL_1();return r_data;) /four/*假設(shè)要讀出當(dāng)前的溫度數(shù)據(jù)我們需要執(zhí)行兩次工作周期,第一個周期為復(fù)位、跳過 ROM指令、執(zhí)行溫度轉(zhuǎn)換存儲器操作指令、等待500uS溫度轉(zhuǎn)換時間.緊接著執(zhí)行第二個周期為復(fù)位、跳過 ROM指令、執(zhí)行讀RAM的存儲器操作指令、讀數(shù)據(jù)(最多為9個字節(jié),中途可停止,只讀簡單溫度值那么讀前2個字節(jié)即可)*/signed char Get_Temputer (v

9、oid)/讀取溫度值,返回的帶符號字符型 -55到+127； 128無法顯示,初始化失敗會顯示 oo.cunsigned char tem_h,tem_l;signed char temp;if(Init_18b20()=0)Write_18b20(SKIP_ROM);Write_18b20(TEMPUTER_CONVERT);) elsereturn temp=0;Delay_Nus(100);if(Init_18b20()=0)Write_18b20(SKIP_ROM);Write_18b20(READ_ROM);) elsereturn temp=0;tem_l=Read_18b20()

10、;tem_h=Read_18b20();/ 復(fù)位 18b20/跳過ROM/溫度變換/ 復(fù)位 18b20/跳過ROM讀暫存存儲器讀數(shù)據(jù)/*099,temp 為補(bǔ)碼,直接由 unsigned char 賦值給 signed只要高字符的低四位和低字符的高四位,溫度范圍 char內(nèi)容不變,代表的值改變*/temp=(tem_h<<4)+(tem_l>>4);return temp;)Segv3.c#define COMMON_ANODIC#define COMMON_CATHODAL#define SEG_CATEGORY0/共陽數(shù)碼管1/共陰數(shù)碼管0/選擇共陽數(shù)碼管#defi

11、ne SEG8_A(1<<0)#define SEG8_B(1<<1)段A亮?xí)r為0,屬共陽數(shù)碼管#define SEG8_C(1<<2)#define SEG8_D(1<<3)#define SEG8_E(1<<4)#define SEG8_F(1<<5)#define SEG8_G(1<<6)#define SEG8_DP(1<<7)#defineSEG8_CHAR_0(SEG8_G&SEG8_DP)#defineSEG8_CHAR_1(SEG8_A&SEG8_D&SEG8

12、_E&SEG8_F&SEG8_G&SEG8_DP)#defineSEG8_CHAR_2(SEG8_C&SEG8_F&SEG8_DP)#defineSEG8_CHAR_3(SEG8_E&SEG8_F&SEG8_DP)#defineSEG8_CHAR_4(SEG8_A&SEG8_D&SEG8_E&SEG8_DP)#defineSEG8_CHAR_5(SEG8_B&SEG8_E&SEG8_DP)#defineSEG8_CHAR_6(SEG8_B&SEG8_DP)#defineSEG8_CHAR_7

13、(SEG8_D&SEG8_E&SEG8_F&SEG8_G&SEG8_DP)#defineSEG8_CHAR_8SEG8_DP#defineSEG8_CHAR_9(SEG8_E&SEG8_DP)#defineSEG8_CHAR_0#defineSEG8_CHAR_E(SEG8_B&SEG8_C&SEG8_DP)#defineSEG8_CHAR_R(SEG8_A&SEG8_B&SEG8_C&SEG8_D&SEG8_F&SEG8_DP)#defineSEG8_CHAR_SUB(SEG8_A&SEG

14、8_B&SEG8_C&SEG8_D&SEG8_E&SEG8_F&SEG8_DP)/#defineSEG8_CHAR_A/#defineSEG8_CHAR_B#define SEG8_CHAR_C (SEG8_B&SEG8_C&SEG8_G&SEG8_DP)/#defineSEG8_CHAR_D/#defineSEG8_CHAR_F/#defineSEG8_CHAR_H #if SEG_CATEGORY=COMMON_ANODICstatic const unsigned char SEG8_CODE=SEG8_CHAR_0,/SE

15、G8_CODE10/SEG8_CODE11/SEG8_CODE12/SEG8_CODE13SEG8_CODE14SEG8_CHAR_1, SEG8_CHAR_2, SEG8_CHAR_3, SEG8_CHAR_4, SEG8_CHAR_5, SEG8_CHAR_6, SEG8_CHAR_7, SEG8_CHAR_8, SEG8_CHAR_9, SEG8_CHAR_, SEG8_CHAR_E, SEG8_CHAR_R, SEG8_CHAR_SUB, SEG8_CHAR_C ;#elsestatic const unsigned char SEG8_CODE=/SEG8_CODE10/SEG8_C

16、ODE11/SEG8_CODE12/SEG8_CODE13SEG8_CODE14SEG8_CHAR_0, SEG8_CHAR_1, SEG8_CHAR_2, SEG8_CHAR_3, SEG8_CHAR_4, SEG8_CHAR_5, SEG8_CHAR_6, SEG8_CHAR_7, SEG8_CHAR_8, SEG8_CHAR_9, SEG8_CHAR_, SEG8_CHAR_E, SEG8_CHAR_R, SEG8_CHAR_SUB, SEG8_CHAR_C;#endif#define SEG8_SLECT_PORT#define BIT00#define BIT11P3 /此處可以設(shè)置

17、I/O 口#define SEG8_BIT0_ON()#define SEG8_BIT0_OFF()#define SEG8_BIT1_ON()#define BIT22#define BIT33SEG8_SLECT_PORT|=(1<<BIT0)SEG8_SLECT_PORT&=(1<<BIT0)SEG8_SLECT_PORT|=(1<<BIT1)#define SEG8_BIT1_OFF()SEG8SLECT#define SEG8_BIT2_ON()#define SEG8_BIT2_OFF()SEG8_SLECTSEG8_SLECT#defi

18、ne SEG8_BIT3_ON()#define SEG8_BIT3_OFF()#define SEG8_CODE_PORTSEG8_SLECTSEG8_SLECTP2_PORT&=(1<<BIT1)_PORT|=(1<<BIT2)_PORT&=(1<<BIT2)_PORT|=(1<<BIT3)_PORT&=(1<<BIT3)/此處可以設(shè)置I/O 口void Seg_Display (char *p)unsigned char temp4;temp0=SEG8_CODE*p+;temp1=SEG8_CODE*p+;temp2=SEG8_CODE*p+;temp3=SEG8_CODE*p+;if(*p<4)#if SEG_CATEGORY=COMMON_ANODIC temp*p&=SEG8_DP;#elsetemp*pFSEG8_DP;#endifunsigned char i;for(i=0;i<150;i+)SEG8_