大连理工大学单片机实验实验八.docx

大连理工大学实验报告实验时间： 2016 年 4 月 日 星期 时间 ： 实验室（房间号）： 实验台号码： 班级： 姓名： 指导教师签字： 成绩： 实验 八 DS18B20的实验与编程 一、 实验目的和要求学习单片机DS18B20数据采集方法。利用DS18B20采集、显示整数部分的8位温度值并利用ZLG7290B的数码管显示温度。二、 实验算法利用DS18B20将环境的温度采集，通过二进制码转BCD码子程序将温度的8位二进制码转换为BCD码，再通过ZLG7290B的低三位显示出来。三、 实验电路图四、 实验流程图主程序从DS18B20中读出数据（GET_TEMPER）转换读出的温度数据（TEMPER_COV）将8位二进制码转换为BCD码通过ZLG7290B显示温度五、 程序清单SDABIT P1.0SCLBIT P1.1WSLAEQU 70HRSLAEQU 71HDISDAEQU 20HDISCONEQU 08HDATA_1EQU 30HTEMPER_LEQU 36H；存放读出温度的低位数据TEMPER_HEQU 35H；存放读出温度的高位数据TEMPEREQU 34H；转换后的8位数据TEMPER_NUMEQU 60HFLAG1BIT 00HDQBIT P3.3ORG0000HLJMP0100HORG0003HLJMPINT_7290ORG0100HSTART:MOVSP,#70HCLRP1.7LCALLDELAY2SETBP1.7SETBEASETBEX0；开启INT0中断SETBIT0MOVDATA_1,#13HMOVDATA_1+1,#13HMOVDATA_1+2,#13HMOVDATA_1+3,#12HMOVDATA_1+4,#10HMOVDATA_1+5,#11HMOVDATA_1+6,#10HMOVDATA_1+7,#0DHMOVDPTR,#LEDSEGMOVR7,#DISCONMOVR0,#DISDAMOVR1,#DATA_1LOOP1:MOVA,R1MOVCA,A+DPTRMOVR0,AINCR1INCR0DJNZR7,LOOP1LOOP:；主循环LCALLGET_TEMPER；读取DS18B20转换的温度值LCALLTEMPER_COVMOVA,TEMPERLCALLBCD_CONT；转换为BCD码MOVR7,#DISCON；显示温度MOVR2,#10HMOVR3,#WSLAMOVR0,#DISDALCALLWRNBYTLCALLDELAY2SJMPLOOPLEDSEG:DB0FCH,60H,0DAH,0F2H,66H,0B6H,0BEH,0E4HDB0FEH,0F6H,0EEH,3EH,9CH,7AH,9EH,8EHDB0FAH,1EH,12H,00HCF:PUSH02HPUSHDPHPUSHDPLMOVDPTR,#LEDSEGMOVR2,AANLA,#0FHMOVCA,A+DPTRMOVR3,AMOVA,R2SWAPAANLA,#0FHMOVCA,A+DPTRMOVR4,APOPDPLPOPDPHPOP02HRETBCD_CONT:；BCD码转换子程序PUSH07HPUSH06HPUSH05HPUSH02HMOVB,#64HDIVABMOVR7,AMOVR2,BMOVA,R2MOVB,#0AHDIVABMOVR6,AMOVR5,BMOVA,R7LCALLCFMOVDISDA+2,R3MOVA,R6LCALLCFMOVDISDA+1,R3MOVA,R5LCALLCFMOVDISDA+0,R3POP02HPOP05HPOP06HPOP07HRETINT_7290:PUSH00HPUSH02HPUSH03HPUSH04HPUSH07HPUSHACCPUSHPSWMOVR0,#28HMOVR7,#04HMOVR2,#00HMOVR3,#WSLAMOVR4,#RSLALCALLRDADDNOPMOVA,29HLCALLCFMOV20H,R3MOV21H,R4POPPSWPOPACCPOP07HPOP04HPOP03HPOP02HPOP00HRETIDELAY2:PUSH00HPUSH01HMOVR0,#00HDELAY3:MOVR1,#00HDJNZR1,$DJNZR0,DELAY3POP01HPOP00HRETGET_TEMPER:SETBDQBCD:LCALLINIT_1820JBFLAG1,S22LJMPBCDS22:LCALLDELAY1MOVA,#0CCHLCALLWRITE_1820MOVA,#44HLCALLWRITE_1820LCALLDELAYCBA:LCALLINIT_1820JBFLAG1,ABCLJMPCBAABC:LCALLDELAY1MOVA,#0CCHLCALLWRITE_1820MOVA,#0BEHLCALLWRITE_1820LCALLREAD_18200RETWRITE_1820:MOVR2,#8CLRCWR1:CLRDQMOVR3,#6DJNZR3,$RRCAMOVDQ,CMOVR3,#23DJNZR3,$SETBDQNOPDJNZR2,WR1SETBDQRETREAD_18200:MOVR4,#2MOVR1,#36HRE00:MOVR2,#8RE01:CLRCSETBDQNOPCLRDQNOPNOPSETBDQMOVR3,#2DJNZR3,$MOVC,DQMOVR3,#23DJNZR3,$RRCADJNZR2,RE01MOVR1,ADECR1DJNZR4,RE00RETTEMPER_COV:MOVA,#0F0HANLA,TEMPER_LSWAPAMOVTEMPER_NUM,AMOVA,TEMPER_LJNBACC.3,TEMPER_COV1INCTEMPER_NUMTEMPER_COV1:MOVA,TEMPER_HANLA,#07HSWAPAADDA,TEMPER_NUMMOVTEMPER_NUM,AMOVTEMPER,TEMPER_NUMRETINIT_1820:SETBDQNOPCLRDQMOVR0,#80HTSR1:DJNZR0,TSR1SETBDQMOVR0,#25HTSR2:DJNZR0,TSR2JNBDQ,TSR3LJMPTSR4TSR3:SETBFLAG1LJMPTSR5TSR4:CLRFLAG1LJMPTSR7TSR5:MOVR0,#06BHTSR6:DJNZR0,TSR6TSR7:SETBDQRETDELAY1:MOVR7,#20HDJNZR7,$RETDELAY:PUSH00HPUSH01HMOVR0,#00LP:MOVR1,#00HDJNZR1,$DJNZR0,LPPOP01HPOP00HRET六、 实验结果与