DS18B20温度控制数码管显示(汇编非常详细)

1、DS18B20温度控制数码管显示（汇编非常详细）*1、P1.6=f进入设定温度报警值TL状态:*2、P1.6f进入设定温度报警值TH状态:L20H283、P1.6f返回4、设定过程:P1.4匐口键（UP）P1.5f键（DOWN）,可快速调。*TIMER_LDATA23HTIMER_HDATA24HTIMER_COUNDATA25HTEMPLDATA26HTEMPHDATA27HTEMP_THDATA28HTEMP_TLDATA29HTEMPHCDATA2AHTEMPLCDATA2BHTEMP_ZHDATA2CHBEEPEQUP3.7DATA_LINEEQUP3.3RELAYEQUP1.3FLA

2、G1EQU20H.0FLAG2EQU20H.1K1EQUP1.4K2EQUP1.5K3EQUP1.6K4EQUP1.7ORG0000HJMPMAINORG000BHAJMPINT_T0;MAIN:MOVSP,#30HMOVTMOD,#01H；T0,方式1MOVTIMER_L,#00H;50ms定时值MOVTIMER_H,#4CHMOVTIMER_COUN,#00H;中断计数MOVIE,#82HLCALLREAD_E2;LCALLRE_18B20MOV20H,#00HSETBBEEPSETBRELAYMOV7FH,#0AHCALLRESETJNBFLAG1,MAIN1JMPSTARTMAIN1:

3、CALLRESETJBFLAG1,STARTLCALLBEEP_BLJMPMAIN1START:MOVA,#0CCHCALLWRITEMOVA,#044HCALLWRITECALLRESETMOVA,#0CCHCALLWRITEMOVA,#0BEHCALLWRITECALLREADCALLCONVTEMPCALLDISPBCDCALLDISP1CALLSCANKEY;EA=1,ET0=1;熄灭符;复位与检测DS18B20;FLAG1=0,DS18B20不存在;DS18B20错误，报警;跳过ROM匹配发出温度转换命令;跳过ROM匹配;发出读温度命令;读温度数据LCALLTEMP_COMPJMPM

4、AIN1J;DS18B20复位与检测子程序;FLAG1=1OK,FLAG1=0ERROR;RESET:SETBDATA_LINENOPCLRDATA_LINEMOVR0,#64H;主机发出延时600微秒的复位低脉冲RESET1:MOVR1,#03HDJNZR0,$MOVR0,#64HDJNZR1,RESET1SETBDATA_LINE;然后拉高数据线RESET2:NOPMOVR0,#25HJNBDATA_LINE,RESET3;等待DS18B20回应DJNZR0,RESET2JMPRESET4;延时RESET3:SETBFLAG1;置标志位，表示DS1820存在RESET4:JMPRESET5

5、CLRFLAG1;涓标志位，表小DS1820/、存在RESET5:JMPRESET6MOVR0,#064HDJNZR0,$;时序要求延时一段时间RESET6:SETBDATA_LINERETJ;=WRITE:MOVR2,#8;一共8位数据CLRCYWR1:CLRDATA_LINE;开始写入DS18B20总线要处于复位（低）状态MOVR3,#09DJNZR3,$;总线复位保去芋18微妙以上RRCA;把一个字节DATA分成8个BIT环移给CMOVDATA_LINE,C;写入一个BITMOVR3,#23DJNZR3,$;等待46微妙SETBDATA_LINE;重新释放总线NOPDJNZR2,WR1；

6、写入下一个BITSETBDATA_LINERET尸=;ADS18B20中读出温度低位、高位和报警值TH、TL;存入26H、27H、28H、29H;READ:MOVR4,#4MOVR1,#26H;将温度高位和低位从;存入26H、27H、28HDS18B20中读出、29HRE00:RE01:MOVR2,#8CLRCSETBDATA_LINENOPNOPCLRDATA_LINE;读前总线保持为低NOPNOPNOPSETBDATA_LINE;开始读总线释放MOVR3,#09;延时18微妙DJNZR3,$MOVC,DATA_LINE;从DS18B20总线读得一一个BITMOVR3,#23DJNZR3,$

7、;等待46微妙RRCA;把读得的位值环移给ADJNZR2,RE01;读卜一个BITMOVR1,AINCR1DJNZR4,RE00RETJ;200ms对闪动标记取反一次JINT_T0:PUSHACCPUSHPSWMOVTL0,TIMER_LMOVTH0,TIMER_HINCTIMER_COUNMOVA,TIMER_COUNCJNEA,#04H,INT_ENDMOVTIMER_COUN,#00HCPLFLAG2INTEND:POPPSWPOPACCRETI;重新对DS18B20初始化；将设定的温度报警值写入DS18B20尸=RE_18B20:JBFLAG1,RE_18B20ARETRE_18B20

8、A:CALLMOVRESETA,#0CCH;跳过ROM匹配LCALLWRITEMOVA,#4EH;写暂存寄存器LCALLWRITEMOVA,TEMP_TH;TH（报警上限）LCALLWRITEMOVA,TEMP_TL;TL（报警下限）LCALLWRITEMOVA,#7FH;12位精确度LCALLWRITERET;=;功能键扫描子程序;=SCANKEY:SCAN_K1:MOVP1,#0F0HJBK1,SCAN_K2CALLBEEP_BLCALLALERT_TLSCAN_K11:CALLALERT_PLAYJBK1,SCAN_K1CALLBEEP_BLCALLALERT_THSCAN_K2:CAL

9、LALERT_PLAYJBK1,SCAN_K11CALLBEEP_BLJBK2,SCAN_K3SCAN_K3:CALLBEEP_BLJBK3,SCAN_K4CALLBEEPBLLCALLRESET_ALERTLCALLRE_18B20LCALLWRITE_E2SCAN_K4:JBK4,SCAN_ENDCALLBEEP_BLSCAN_END:RETJ;设置温度报警值尸=RESET_ALERT:CALLALERT_TLCALLALERT_PLAYJNBK3,$;K3为位移键SETBTR0RESET_TL:CALLALERT_PLAYJNBFLAG2,R_TL01mov75H,7m;送入熄灭符mov

10、76H,7mCALLALERT_PLAYJMPR_TL02R_TL01:CALLALERT_TLmov75h,7Eh;送设定值mov76h,7DhCALLALERT_PLAY;显示设定值R_TL02:JNBK1,K011AJNBK2,K011BJNBK3,RESET_THJMPRESET_TLK011A:INCTEMP_TLMOVA,TEMP_TLCJNEA,#120,K012A;没有到设定上限值，转MOVTEMP_TL,#0K012A:CALLTL_DELJMPRESET_TLK011B:DECTEMP_TLMOVA,TEMP_TLCJNEA,#00H,K012B;没有到设5限值，转MOVT

11、EMP_TL,#119K012B:CALLTL_DELJMPRESET_TLJRESET_TH:CALLBEEP_BLJNBK3,$RESET_TH1:CALLALERT_PLAYJNBFLAG2,R_TH01mov75H,7fh;送入熄灭符mov76H,7mCALLALERT_PLAYJMPR_TH02R_TH01:CALLALERT_THmov75h,7Eh;mov76h,7DhCALLALERT_PLAYR_TH02:JNBK1,K021AJNBK2,K021BJNBK3,K002JMPRESET_TH1K021A:INCTEMP_THMOVA,TEMP_THCJNEA,#120,K02

12、2A;没有到设定上限值，转MOVTEMP_TH,#0K022A:CALLTH_DELJMPRESET_TH1K021B:DECTEMP_TH;减1MOVA,TEMP_THCJNEA,#00H,K022B;没有到设5限值，转MOVTEMP_TH,#119K022B:CALLTH_DELJMPRESET_TH1K002:CALLBEEP_BLCLRTR0;关闭中断RETJ;键延时子程序;多次调用报警值显示程序来延时;TL_DEL:；报警低值延时MOVR2,#0AHTL_DEL1:CALLALERT_TLCALLALERT_PLAYDJNZR2,TL_DEL1RETTH_DEL:；报警高值延时MOV

13、R2,#0AHTH_DEL1:CALLALERT_THCALLALERT_PLAYDJNZR2,TH_DEL1RET实时温度值与设定报警温度值TH、TL比较子程序当实际温度大于当实际温度小于TH的设定值时，显示TH的设定值时，显示“H；继电器关闭。“O；继电器吸合。当实际温度小于TL的设定值时，显示“L：闪动显示标记符H、L、OTEMP_COMP:SETBTR0;启动中断MOVA,TEMP_THSUBBA,TEMP_ZH;减数被减数，则JCCHULI1;借位标志位C=1,转MOVA,TEMP_ZHSUBBA,TEMP_TL;减数被减数，则JCCHULI2;借位标志位C=1,转JNBFLAG2,

14、T_COMP1;FLAG2=0,显示标记字符MOV74H,#0AH;熄灭符LCALLDISP1JMPT_COMP2T_COMP1:MOV74H,#00HLCALLDISP1;显示"O"T_COMP2:CLRRELAY;继电器吸合CLRTR0;关闭中断RET;超温处理;CHULI1:SETBRELAY;继电器关闭JNBFLAG2,CHULI10MOV74H,#0AH;熄灭符LCALLDISP1JMPCHULI11CHULI10:MOV74H,#0DHLCALLDISP1;显示"H"CALLBEEP_BL;蜂鸣器响CHULI11:CLRTR0;关闭中断RET

15、;欠温处理;CHULI2:;欠温处理JNBFLAG2,CHULI20MOV74H,#0AH;熄灭符LCALLDISP1JMPCHULI21CHULI20:MOV74H,#0CHLCALLDISP1;显示"L"CALLBEEP_BL;蜂鸣器响CHULI21:CLRTR0;关闭中断RET;把DS18B20暂存器里的温度报警值拷贝到EEROMJWRITE_E2:CALLRESETMOVA,#0CCH;跳过ROM匹配LCALLWRITEMOVA,#48H;温度报警值拷贝到EEROMLCALLWRITERETJ;把DS18B20EEROM里的温度报警值拷贝回暂存器；READ_E2:C

16、ALLRESETMOVA,#0CCH;跳过ROM匹配LCALLWRITEMOVA,#0B8H;温度报警值拷贝回暂存器CALLWRITERET.*;处理温度BCD码子程序.*;CONVTEMP:MOVA,TEMPH;判温度是否零下ANLA,#80HJZTEMPC1；温度零上转CLRCMOVA,TEMPL；一进制数求补（双字节）CPLA；取反加1ADDA,#01HMOVTEMPL,AMOVA,TEMPH；一CPLAADDCA,#00HMOVTEMPH,A;TEMPHCHI=符号位MOVTEMPHC,#0BHSJMPTEMPC11TEMPC1:MOVTEMPHC,#0AH;TEMPC11:MOVA,

17、TEMPHCSWAPAMOVTEMPHC,AMOVA,TEMPLANLA,#0FH乘0.0625MOVDPTR,#TEMPDOTTABMOVCA,A+DPTRMOVTEMPLC,A;TEMPLCLOW=小数部分BCDMOVA,TEMPL;整数部分ANLA,#0F0HSWAPAMOVTEMPL,AMOVA,TEMPHANLA,#0FHSWAPAORLA,TEMPLMOVTEMP_ZH,A;组合后的脸入TEMP_ZHLCALLHEX2BCD1MOVTEMPL,AANLA,#0F0HSWAPAORLA,TEMPHC;TEMPHCLOW=十位数BCDMOVTEMPHC,AMOVA,TEMPLANLA,

18、#0FHSWAPA;TEMPLCHI=个位数BCDORLA,TEMPLCMOVTEMPLC,AMOVA,R7BCDJZTEMPC12ANLA,#0FHSWAPAMOVR7,AMOVA,TEMPHC;TEMPHCHI=百位数ANLA,#0FHORLA,R7MOVTEMPHC,ATEMPC12:RET;小数部分码表;TEMPDOTTAB:DB00H,01H,01H,02H,03H,03H,04H,04H,05H,06HDB06H,07H,08H,08H,09H,09HJ;显示区BCD码温度值刷新子程序JDISPBCD:MOVA,TEMPLCANLA,#0FHMOV70H,A;小数位MOVA,TEM

19、PLCSWAPAANLA,#0FHMOV71H,A;个位MOVA,TEMPHCANLA,#0FHMOV72H,A;十位MOVA,TEMPHCSWAPAANLA,#0FHMOV73H,A;百位MOVA,TEMPHCANLA,#0F0HCJNEA,#010H,DISPBCD0SJMPDISPBCD2DISPBCD0:MOVA,TEMPHCANLA,#0FHJNZDISPBCD2;十位数是0MOVA,TEMPHCSWAPAANLA,#0FHMOV73H,#0AH；符号位不显示MOV72H,A；十位数显示符号DISPBCD2:RET；*;温度显示子程序;*;显示数据在70H73H单元内，用4位共阳数码

20、管显示，P0口输出段码数据,;P2口作扫描控制，每个LED数码管亮2MS时间再逐位循环。DISP1:MOVR1,#70H;指向显示数据首址;扫描控制字初值MOVR5,#7FHPLAY:MOVP0,#0FFHMOVA,R5MOVP2,A;扫描字放入AMOVA,R1;取显示数据到AMOVDPTR,#TAB;取段码表地址MOVCA,A+DPTR;查显示数据对应段码MOVP0,AMOVA,R5;段码放入P0口JBACC.6,LOOP5CLRP0.7;小数点处理LOOP5:LCALLDL_MS;显示2MSINCR1;指向卜一个地址MOVA,R5;放回R5内JNBACC.3,ENDOUT;ACC.3=0时

21、一次显示结束RRA;A中数据循环左移MOVR5,A;放入R5中AJMPPLAY;跳回PLAY循环ENDOUT:MOVP0,#0FFH;一次显布结束，P0口复位MOVP2,#0FFHRET;P2口复位TAB:DB0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H,0FFH,0BFH,0C7H,89H;“0"“I”"2""3""4""5""6"""7""包""9"H"DL_

22、MS:MOVR6,#0AH;2MS延时程序，LED显示程序用DL1:MOVR7,#64HDL2:DJNZR7,DL2DJNZR6,DL1RET.*;；单字节十六进制转BCD*HEX2BCD1:MOVB,#064HDIVABMOVR7,AMOVA,#0AHXCHA,BDIVABSWAPAORLA,BRET；报警值TH、TL数据转换；ALERT_TL:ALERT_TL1:MOV79H,#0CHMOV78H,#0BHMOVA,TEMP_TLMOVR0,#77HMOVB,#064HDIVABCJNEA,#01H,ALERT_TL1MOVR0,AJMPALERT_TL2MOVA,#0BH;显示ALERT_TL2:MOVR0,AMOVA,#0AHXCHA,BDIVABDECR0MOVR0,AMOV7DH,ADECR0MOVR0,BMOV7EH,BRET;ALERT_TH:MOV79H,#0DHMOV78H,#0BHMOVA,TEMP_THALERTALERT_TH1:_TH2:MOVR0,#77HMOVB,#064HDI