求单片机水温控制系统 proteus和代码！~

CLR?P3.7

MAIN:MOV?38H,#00H

MOV?39H,#00H

MOV?3AH,#00H

MOV?3BH,#00H

LCALL?GET_TEMPER?

LCALL?TEMPRRO

MOV?P2,#06H

LCALL?PRO

;------------------------------------------------------

MOV?38H,#00H

MOV?39H,#00H

MOV?3AH,#00H

MOV?3BH,#00H

LCALL?GET_TEMPER2?

LCALL?TEMPRRO

MOV?P2,#5BH

LCALL?PRO

;------------------------------------------------------

MOV?38H,#00H

MOV?39H,#00H

MOV?3AH,#00H

MOV?3BH,#00H

LCALL?GET_TEMPER3

LCALL?TEMPRRO

MOV?P2,#4FH

LCALL?PRO

;------------------------------------------------------

MOV?38H,#00H

MOV?39H,#00H

MOV?3AH,#00H

MOV?3BH,#00H

LCALL?GET_TEMPER4

LCALL?TEMPRRO

MOV?P2,#66H

LCALL?PRO

;------------------------------------------------------

MOV?38H,#00H

MOV?39H,#00H

MOV?3AH,#00H

MOV?3BH,#00H

LCALL?GET_TEMPER5

LCALL?TEMPRRO

MOV?P2,#6DH

LCALL?PRO

;------------------------------------------------------

MOV?38H,#00H

MOV?39H,#00H

MOV?3AH,#00H

MOV?3BH,#00H

LCALL?GET_TEMPER6

LCALL?TEMPRRO

MOV?P2,#7DH

LCALL?PRO

;------------------------------------------------------

MOV?38H,#00H

MOV?39H,#00H

MOV?3AH,#00H

MOV?3BH,#00H

LCALL?GET_TEMPER7

LCALL?TEMPRRO

MOV?P2,#07H

LCALL?PRO

;------------------------------------------------------

MOV?38H,#00H

MOV?39H,#00H

MOV?3AH,#00H

MOV?3BH,#00H

LCALL?GET_TEMPER8

LCALL?TEMPRRO

MOV?P2,#7FH

LCALL?PRO

LJMPMAIN

;==============================================CHL1

GET_TEMPER:?

SETBP1.0H?;?定时入口?

BCD:LCALL?INIT_1820?

JB00H,S22?

LJMPBCD?;?若DS18B20不存在则返回?

S22:?LCALL?DELAY1?

MOVA,#0CCH?;?跳过ROM匹配------0CC命令

LCALL?WRITE_1820?

MOV?A,#44H?;?发出温度转换命令?

LCALL?WRITE_1820?

NOP?

LCALL?DELAY1?

CBA:LCALL?INIT_1820?

JB?00H,ABC?

LJMP?CBA?

ABC:LCALL?DELAY1?

MOV?A,#0CCH?;?跳过ROM匹配?

LCALL?WRITE_1820?

MOV?A,#0BEH?;?发出读温度命令?

LCALL?WRITE_1820?

LCALL?READ_18200?;READ_1820?

RET?

;==============================

READ_1820:?

MOV?R2,#8?

RE1:?

CLR?C?

SETB?P1.0H?

NOP?

CLR?P1.0H?

NOP?

SETB?P1.0H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.0H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE1?

RET?

;=============================

WRITE_1820:?

MOV?R2,#8?

CLR?C?

WR1:?

CLR?P1.0H?

MOV?R3,#6?

DJNZ?R3,$?

RRC?A?

MOV?P1.0H,C?

MOV?R3,#23?

DJNZ?R3,$?

SETB?P1.0H?

NOP?

DJNZ?R2,WR1?

SETB?P1.0H?

RET

;=======================================

READ_18200:?

MOV?R4,#2?;?将温度高位和低位从DS18B20中读出?

MOV?R1,#31H?;?低位存入30H(TEMPER_L),高位存入31H(TEMPER_H)?

RE00:?

MOV?R2,#8?

RE01:?

CLR?C?

SETB?P1.0H?

NOP?

CLR?P1.0H?

NOP?

SETB?P1.0H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.0H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE01?

MOV?@R1,A?

DEC?R1?

DJNZ?R4,RE00?

RET?

;=======================================

INIT_1820:?

SETB?P1.0H?

NOP?

CLR?P1.0H?

MOV?R0,#250

TSR1:?

DJNZ?R0,TSR1?;?延时520us?

SETB?P1.0H?

MOV?R0,#25H?;96US-25H?

TSR2:?

DJNZ?R0,TSR2?

JNB?P1.0H,TSR3;如D0为低则复位成功，DS18B20存在?

LJMP?TSR4?;?延时?

TSR3:?

SETB?00H?;?置标志位,表示DS1820存在?

LJMP?TSR5?

TSR4:?

CLR?00H?;?清标志位,表示DS1820不存在?

LJMP?TSR7?

TSR5:?

MOV?R0,#06BH?;200US?

TSR6:?

DJNZ?R0,TSR6?;?延时?

TSR7:?

SETB?P1.0H?;拉高总线

RET

;===============================?

GET_TEMPER2:?

SETBP1.1H?;?定时入口?

BCD2:LCALL?INIT_18202?

JB00H,S222?

LJMPBCD2?;?若DS18B20不存在则返回?

S222:?LCALL?DELAY1?

MOVA,#0CCH?;?跳过ROM匹配------0CC命令

LCALL?WRITE_18202?

MOV?A,#44H?;?发出温度转换命令?

LCALL?WRITE_18202?

NOP?

LCALL?DELAY1?

CBA2:LCALL?INIT_18202?

JB?00H,ABC2?

LJMP?CBA2?

ABC2:LCALL?DELAY1?

MOV?A,#0CCH?;?跳过ROM匹配?

LCALL?WRITE_18202?

MOV?A,#0BEH?;?发出读温度命令?

LCALL?WRITE_18202?

LCALL?READ_182002?;READ_1820?

RET?

;==============================

READ_18202:?

MOV?R2,#8?

RE12:?

CLR?C?

SETB?P1.1H?

NOP?

CLR?P1.1H?

NOP?

SETB?P1.1H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.1H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE12?

RET?

;=============================

WRITE_18202:?

MOV?R2,#8?

CLR?C?

WR12:?

CLR?P1.1H?

MOV?R3,#6?

DJNZ?R3,$?

RRC?A?

MOV?P1.1H,C?

MOV?R3,#23?

DJNZ?R3,$?

SETB?P1.1H?

NOP?

DJNZ?R2,WR12?

SETB?P1.1H?

RET

;=======================================

READ_182002:?

MOV?R4,#2?;?将温度高位和低位从DS18B20中读出?

MOV?R1,#31H?;?低位存入30H(TEMPER_L),高位存入31H(TEMPER_H)?

RE002:?

MOV?R2,#8?

RE012:?

CLR?C?

SETB?P1.1H?

NOP?

CLR?P1.1H?

NOP?

SETB?P1.1H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.1H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE012?

MOV?@R1,A?

DEC?R1?

DJNZ?R4,RE002?

RET?

;=======================================

INIT_18202:?

SETB?P1.1H?

NOP?

CLR?P1.1H?

MOV?R0,#250

TSR12:?

DJNZ?R0,TSR12?;?延时520us?

SETB?P1.1H?

MOV?R0,#25H?;96US-25H?

TSR22:?

DJNZ?R0,TSR22?

JNB?P1.1H,TSR32;如D0为低则复位成功，DS18B20存在?

LJMP?TSR42?;?延时?

TSR32:?

SETB?00H?;?置标志位,表示DS1820存在?

LJMP?TSR52?

TSR42:?

CLR?00H?;?清标志位,表示DS1820不存在?

LJMP?TSR72?

TSR52:?

MOV?R0,#06BH?;200US?

TSR62:?

DJNZ?R0,TSR62?;?延时?

TSR72:?

SETB?P1.1H?;拉高总线

RET

;===============================?

GET_TEMPER3:?

SETBP1.2H?;?定时入口?

BCD3:LCALL?INIT_18203?

JB00H,S223?

LJMPBCD3?;?若DS18B20不存在则返回?

S223:?LCALL?DELAY1?

MOVA,#0CCH?;?跳过ROM匹配------0CC命令

LCALL?WRITE_18203

MOV?A,#44H?;?发出温度转换命令?

LCALL?WRITE_18203

NOP?

LCALL?DELAY1?

CBA3:LCALL?INIT_18203

JB?00H,ABC3?

LJMP?CBA3

ABC3:LCALL?DELAY1?

MOV?A,#0CCH?;?跳过ROM匹配?

LCALL?WRITE_18203

MOV?A,#0BEH?;?发出读温度命令?

LCALL?WRITE_18203

LCALL?READ_182003?;READ_1820?

RET?

;==============================

READ_18203:?

MOV?R2,#8?

RE13:?

CLR?C?

SETB?P1.2H?

NOP?

CLR?P1.2H?

NOP?

SETB?P1.2H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.2H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE13

RET?

;=============================

WRITE_18203:?

MOV?R2,#8?

CLR?C?

WR13:?

CLR?P1.2H?

MOV?R3,#6?

DJNZ?R3,$?

RRC?A?

MOV?P1.2H,C?

MOV?R3,#23?

DJNZ?R3,$?

SETB?P1.2H?

NOP?

DJNZ?R2,WR13

SETB?P1.2H?

RET

;=======================================

READ_182003:?

MOV?R4,#2?;?将温度高位和低位从DS18B20中读出?

MOV?R1,#31H?;?低位存入30H(TEMPER_L),高位存入31H(TEMPER_H)?

RE003:?

MOV?R2,#8?

RE013:?

CLR?C?

SETB?P1.2H?

NOP?

CLR?P1.2H?

NOP?

SETB?P1.2H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.2H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE013

MOV?@R1,A?

DEC?R1?

DJNZ?R4,RE003?

RET?

;=======================================

INIT_18203:?

SETB?P1.2H?

NOP?

CLR?P1.2H?

MOV?R0,#250

TSR13:?

DJNZ?R0,TSR13?;?延时520us?

SETB?P1.2H?

MOV?R0,#25H?;96US-25H?

TSR23:?

DJNZ?R0,TSR23?

JNB?P1.2H,TSR33;如D0为低则复位成功，DS18B20存在?

LJMP?TSR43?;?延时?

TSR33:?

SETB?00H?;?置标志位,表示DS1820存在?

LJMP?TSR53?

TSR43:?

CLR?00H?;?清标志位,表示DS1820不存在?

LJMP?TSR73

TSR53:?

MOV?R0,#06BH?;200US?

TSR63:?

DJNZ?R0,TSR63?;?延时?

TSR73:?

SETB?P1.2H?;拉高总线

RET

;===============================?

GET_TEMPER4:?

SETBP1.3H?;?定时入口?

BCD4:LCALL?INIT_18204

JB00H,S224?

LJMPBCD4?;?若DS18B20不存在则返回?

S224:?LCALL?DELAY1?

MOVA,#0CCH?;?跳过ROM匹配------0CC命令

LCALL?WRITE_18204

MOV?A,#44H?;?发出温度转换命令?

LCALL?WRITE_18204

NOP?

LCALL?DELAY1?

CBA4:LCALL?INIT_18204

JB?00H,ABC4

LJMP?CBA4

ABC4:LCALL?DELAY1?

MOV?A,#0CCH?;?跳过ROM匹配?

LCALL?WRITE_18204

MOV?A,#0BEH?;?发出读温度命令?

LCALL?WRITE_18204

LCALL?READ_182004?;READ_1820?

RET?

;==============================

READ_18204:?

MOV?R2,#8?

RE14:?

CLR?C?

SETB?P1.3H?

NOP?

CLR?P1.3H?

NOP?

SETB?P1.3H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.3H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE14

RET?

;=============================

WRITE_18204:?

MOV?R2,#8?

CLR?C?

WR14:?

CLR?P1.3H?

MOV?R3,#6?

DJNZ?R3,$?

RRC?A?

MOV?P1.3H,C?

MOV?R3,#23?

DJNZ?R3,$?

SETB?P1.3H?

NOP?

DJNZ?R2,WR14

SETB?P1.3H?

RET

;=======================================

READ_182004:?

MOV?R4,#2?;?将温度高位和低位从DS18B20中读出?

MOV?R1,#31H?;?低位存入30H(TEMPER_L),高位存入31H(TEMPER_H)?

RE004:?

MOV?R2,#8?

RE014:?

CLR?C?

SETB?P1.3H?

NOP?

CLR?P1.3H?

NOP?

SETB?P1.3H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.3H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE014

MOV?@R1,A?

DEC?R1?

DJNZ?R4,RE004

RET?

;=======================================

INIT_18204:?

SETB?P1.3H?

NOP?

CLR?P1.3H?

MOV?R0,#250

TSR14:?

DJNZ?R0,TSR14?;?延时520us?

SETB?P1.3H?

MOV?R0,#25H?;96US-25H?

TSR24:?

DJNZ?R0,TSR24

JNB?P1.3H,TSR34;如D0为低则复位成功，DS18B20存在?

LJMP?TSR44?;?延时?

TSR34:?

SETB?00H?;?置标志位,表示DS1820存在?

LJMP?TSR54?

TSR44:?

CLR?00H?;?清标志位,表示DS1820不存在?

LJMP?TSR74

TSR54:?

MOV?R0,#06BH?;200US?

TSR64:?

DJNZ?R0,TSR64?;?延时?

TSR74:?

SETB?P1.3H?;拉高总线

RET

;===============================?

GET_TEMPER5:?

SETBP1.4H?;?定时入口?

BCD5:LCALL?INIT_18205

JB00H,S225

LJMPBCD5?;?若DS18B20不存在则返回?

S225:?LCALL?DELAY1?

MOVA,#0CCH?;?跳过ROM匹配------0CC命令

LCALL?WRITE_18205

MOV?A,#44H?;?发出温度转换命令?

LCALL?WRITE_18205

NOP?

LCALL?DELAY1?

CBA5:LCALL?INIT_18205

JB?00H,ABC5

LJMP?CBA5

ABC5:LCALL?DELAY1?

MOV?A,#0CCH?;?跳过ROM匹配?

LCALL?WRITE_18205

MOV?A,#0BEH?;?发出读温度命令?

LCALL?WRITE_18205

LCALL?READ_182005?;READ_1820?

RET?

;==============================

READ_18205:?

MOV?R2,#8?

RE15:?

CLR?C?

SETB?P1.4H?

NOP?

CLR?P1.4H?

NOP?

SETB?P1.4H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.4H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE15

RET?

;=============================

WRITE_18205:?

MOV?R2,#8?

CLR?C?

WR15:?

CLR?P1.4H?

MOV?R3,#6?

DJNZ?R3,$?

RRC?A?

MOV?P1.4H,C?

MOV?R3,#23?

DJNZ?R3,$?

SETB?P1.4H?

NOP?

DJNZ?R2,WR15

SETB?P1.4H?

RET

;=======================================

READ_182005:?

MOV?R4,#2?;?将温度高位和低位从DS18B20中读出?

MOV?R1,#31H?;?低位存入30H(TEMPER_L),高位存入31H(TEMPER_H)?

RE005:?

MOV?R2,#8?

RE015:?

CLR?C?

SETB?P1.4H?

NOP?

CLR?P1.4H?

NOP?

SETB?P1.4H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.4H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE015

MOV?@R1,A?

DEC?R1?

DJNZ?R4,RE005

RET?

;=======================================

INIT_18205:?

SETB?P1.4H?

NOP?

CLR?P1.4H?

MOV?R0,#250

TSR15:?

DJNZ?R0,TSR15?;?延时520us?

SETB?P1.4H?

MOV?R0,#25H?;96US-25H?

TSR25:?

DJNZ?R0,TSR25

JNB?P1.4H,TSR35;如D0为低则复位成功，DS18B20存在?

LJMP?TSR45?;?延时?

TSR35:?

SETB?00H?;?置标志位,表示DS1820存在?

LJMP?TSR55?

TSR45:?

CLR?00H?;?清标志位,表示DS1820不存在?

LJMP?TSR75

TSR55:?

MOV?R0,#06BH?;200US?

TSR65:?

DJNZ?R0,TSR65?;?延时?

TSR75:?

SETB?P1.4H?;拉高总线

RET

;===============================?

GET_TEMPER6:?

SETBP1.5H?;?定时入口?

BCD6:LCALL?INIT_18206

JB00H,S226

LJMPBCD6;?若DS18B20不存在则返回?

S226:?LCALL?DELAY1?

MOVA,#0CCH?;?跳过ROM匹配------0CC命令

LCALL?WRITE_18206

MOV?A,#44H?;?发出温度转换命令?

LCALL?WRITE_18206

NOP?

LCALL?DELAY1?

CBA6:LCALL?INIT_18206

JB?00H,ABC6

LJMP?CBA6

ABC6:LCALL?DELAY1?

MOV?A,#0CCH?;?跳过ROM匹配?

LCALL?WRITE_18206

MOV?A,#0BEH?;?发出读温度命令?

LCALL?WRITE_18206

LCALL?READ_182006?;READ_1820?

RET?

;==============================

READ_18206:?

MOV?R2,#8?

RE16:?

CLR?C?

SETB?P1.5H?

NOP?

CLR?P1.5H?

NOP?

SETB?P1.5H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.5H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE16

RET?

;=============================

WRITE_18206:?

MOV?R2,#8?

CLR?C?

WR16:?

CLR?P1.5H?

MOV?R3,#6?

DJNZ?R3,$?

RRC?A?

MOV?P1.5H,C?

MOV?R3,#23?

DJNZ?R3,$?

SETB?P1.5H?

NOP?

DJNZ?R2,WR16

SETB?P1.5H?

RET

;=======================================

READ_182006:?

MOV?R4,#2?;?将温度高位和低位从DS18B20中读出?

MOV?R1,#31H?;?低位存入30H(TEMPER_L),高位存入31H(TEMPER_H)?

RE006:?

MOV?R2,#8?

RE016:?

CLR?C?

SETB?P1.5H?

NOP?

CLR?P1.5H?

NOP?

SETB?P1.5H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.5H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE016

MOV?@R1,A?

DEC?R1?

DJNZ?R4,RE006

RET?

;=======================================

INIT_18206:?

SETB?P1.5H?

NOP?

CLR?P1.5H?

MOV?R0,#250

TSR16:?

DJNZ?R0,TSR16?;?延时520us?

SETB?P1.5H?

MOV?R0,#25H?;96US-25H?

TSR26:?

DJNZ?R0,TSR26

JNB?P1.5H,TSR36;如D0为低则复位成功，DS18B20存在?

LJMP?TSR46?;?延时?

TSR36:?

SETB?00H?;?置标志位,表示DS1820存在?

LJMP?TSR56?

TSR46:?

CLR?00H?;?清标志位,表示DS1820不存在?

LJMP?TSR76

TSR56:?

MOV?R0,#06BH?;200US?

TSR66:?

DJNZ?R0,TSR66?;?延时?

TSR76:?

SETB?P1.5H?;拉高总线

RET

;===============================?

GET_TEMPER7:?

SETBP1.6H?;?定时入口?

BCD7:LCALL?INIT_18207

JB00H,S227

LJMPBCD7;?若DS18B20不存在则返回?

S227:?LCALL?DELAY1?

MOVA,#0CCH?;?跳过ROM匹配------0CC命令

LCALL?WRITE_18207

MOV?A,#44H?;?发出温度转换命令?

LCALL?WRITE_18207

NOP?

LCALL?DELAY1?

CBA7:LCALL?INIT_18207

JB?00H,ABC7

LJMP?CBA7

ABC7:LCALL?DELAY1?

MOV?A,#0CCH?;?跳过ROM匹配?

LCALL?WRITE_18207

MOV?A,#0BEH?;?发出读温度命令?

LCALL?WRITE_18207

LCALL?READ_182007?;READ_1820?

RET?

;==============================

READ_18207:?

MOV?R2,#8?

RE17:?

CLR?C?

SETB?P1.6H?

NOP?

CLR?P1.6H?

NOP?

SETB?P1.6H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.6H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE17

RET?

;=============================

WRITE_18207:?

MOV?R2,#8?

CLR?C?

WR17:?

CLR?P1.6H?

MOV?R3,#6?

DJNZ?R3,$?

RRC?A?

MOV?P1.6H,C?

MOV?R3,#23?

DJNZ?R3,$?

SETB?P1.6H?

NOP?

DJNZ?R2,WR17

SETB?P1.6H?

RET

;=======================================

READ_182007:?

MOV?R4,#2?;?将温度高位和低位从DS18B20中读出?

MOV?R1,#31H?;?低位存入30H(TEMPER_L),高位存入31H(TEMPER_H)?

RE007:?

MOV?R2,#8?

RE017:?

CLR?C?

SETB?P1.6H?

NOP?

CLR?P1.6H?

NOP?

SETB?P1.6H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.6H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE017

MOV?@R1,A?

DEC?R1?

DJNZ?R4,RE007

RET?

;=======================================

INIT_18207:?

SETB?P1.6H?

NOP?

CLR?P1.6H?

MOV?R0,#250

TSR17:?

DJNZ?R0,TSR17?;?延时520us?

SETB?P1.6H?

MOV?R0,#25H?;96US-25H?

TSR27:?

DJNZ?R0,TSR27

JNB?P1.6H,TSR37;如D0为低则复位成功，DS18B20存在?

LJMP?TSR47;?延时?

TSR37:?

SETB?00H?;?置标志位,表示DS1820存在?

LJMP?TSR57?

TSR47:?

CLR?00H?;?清标志位,表示DS1820不存在?

LJMP?TSR77

TSR57:?

MOV?R0,#06BH?;200US?

TSR67:?

DJNZ?R0,TSR67;?延时?

TSR77:?

SETB?P1.6H?;拉高总线

RET

;===============================?

GET_TEMPER8:?

SETBP1.7H?;?定时入口?

BCD8:LCALL?INIT_18208

JB00H,S228

LJMPBCD8;?若DS18B20不存在则返回?

S228:?LCALL?DELAY1?

MOVA,#0CCH?;?跳过ROM匹配------0CC命令

LCALL?WRITE_18208

MOV?A,#44H?;?发出温度转换命令?

LCALL?WRITE_18208

NOP?

LCALL?DELAY1?

CBA8:LCALL?INIT_18208

JB?00H,ABC8

LJMP?CBA8

ABC8:LCALL?DELAY1?

MOV?A,#0CCH?;?跳过ROM匹配?

LCALL?WRITE_18208

MOV?A,#0BEH?;?发出读温度命令?

LCALL?WRITE_18208

LCALL?READ_182008?;READ_1820?

RET?

;==============================

READ_18208:?

MOV?R2,#8?

RE18:?

CLR?C?

SETB?P1.7H?

NOP?

CLR?P1.7H?

NOP?

SETB?P1.7H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.7H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE18

RET?

;=============================

WRITE_18208:?

MOV?R2,#8?

CLR?C?

WR18:?

CLR?P1.7H?

MOV?R3,#6?

DJNZ?R3,$?

RRC?A?

MOV?P1.7H,C?

MOV?R3,#23?

DJNZ?R3,$?

SETB?P1.7H?

NOP?

DJNZ?R2,WR18

SETB?P1.7H?

RET

;=======================================

READ_182008:?

MOV?R4,#2?;?将温度高位和低位从DS18B20中读出?

MOV?R1,#31H?;?低位存入30H(TEMPER_L),高位存入31H(TEMPER_H)?

RE008:?

MOV?R2,#8?

RE018:?

CLR?C?

SETB?P1.7H?

NOP?

CLR?P1.7H?

NOP?

SETB?P1.7H?

MOV?R3,#7?

DJNZ?R3,$?

MOV?C,P1.7H?

MOV?R3,#23?

DJNZ?R3,$?

RRC?A?

DJNZ?R2,RE018

MOV?@R1,A?

DEC?R1?

DJNZ?R4,RE008

RET?

;=======================================

INIT_18208:?

SETB?P1.7H?

NOP?

CLR?P1.7H?

MOV?R0,#250

TSR18:?

DJNZ?R0,TSR18?;?延时520us?

SETB?P1.7H?

MOV?R0,#25H?;96US-25H?

TSR28:?

DJNZ?R0,TSR28

JNB?P1.7H,TSR38;如D0为低则复位成功，DS18B20存在?

LJMP?TSR48;?延时?

TSR38:?

SETB?00H?;?置标志位,表示DS1820存在?

LJMP?TSR58

TSR48:?

CLR?00H?;?清标志位,表示DS1820不存在?

LJMP?TSR78

TSR58:?

MOV?R0,#06BH?;200US?

TSR68:?

DJNZ?R0,TSR68;?延时?

TSR78:?

SETB?P1.7H?;拉高总线

RET

;===============================?

;======================================

DELAY1:MOV?R7,#20H?

DJNZ?R7,$?

RET

;====================================

TEMPRRO:MOV?33H,#00H;初始化0

MOV?A,30H

ANL?A,#0FH

SWAP?A

MOV?33H,A

MOV?A,31H

ANL?A,#0F0H

SWAP?A

ORL?33H,A;重新组合成的带符号数据（整数部分）

MOV?A,33H

ANL?A,#80H;判断符号

JZ?TEMPP

MOV?A,33H

CPL?A

;ADD?A,#01H

SJMP?TEMPP1

TEMPP:MOV?A,33H;正数处理程序

LCALL?HBCD

MOV?A,31H

ANL?A,#0FH

MOV?DPTR,#TEMPTAB;小数查表

MOVC?A,@A+DPTR

MOV?36H,A

CLR?P3.7;表示正数

SJMP?EXIT

TEMPP1:LCALL?HBCD;负数处理程序

MOV?A,31H

ANL?A,#0FH

ORL?A,#0F0H

CPL?A

ADD?A,#01H

MOV?DPTR,#TEMPTAB

MOVC?A,@A+DPTR;小数查表

MOV?36H,A

SETB?P3.7;表示负数

EXIT:RET

HBCD: MOV B,#100 ;分离出百位，存放在R3中

DIV AB

MOV R3,A

MOV A,#10 ;余数继续分离十位和个位

XCH A,B

DIV AB

SWAP A

ORL A,B ;将十位和个位拼装成BCD码

MOV?34H,R3

MOV?35H,A

RET

TEMPTAB:DB?00H,01H,01H,02H,03H,03H,04H,04H

DB?05H,06H,06H,07H,08H,08H,09H,09H;0~16*0.0652

;==================================================

CBCD:;MOV?R2,#04H;5个待分离的BCD

CL:MOV?A,@R1?;分离后将占10个单元

MOV?B,A

ANL?A,#0F0H

SWAP?A

MOV?4CH,A

MOV?A,B

ANL?A,#0FH

MOV?4DH,A

MOV?@R0,4CH

INC?R0

MOV?@R0,4DH

INC?R0

INC?R1

DJNZ?R2,CL

RET

;===================================================

DISPLAY:MOV?R0,#38H;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;显示缓冲区首地址

MOV?R2,#04

DISP_LOOP:MOV?A,@R0

LCALL?DISP

INC?R0

DJNZ?R2,DISP_LOOP

CLRP0.2

NOP

SETB?P0.2;上升沿将数据送到输出锁存器

NOP

CLRP0.2

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