;以下是濕度報警	P1.0\P1.1,61H當前濕度,66H上限,65下限,68上差,67下差
	MOV	A,61H	;#####################
	CJNE	A,66H,SD_BJ_H_NEQ
SD_BJ_H_EQ:	CLR	P1.0
	LJMP	SD_BJ_H_OVER
SD_BJ_H_NEQ:	JC	SD_BJ_H_OVER
	CLR	P1.0
SD_BJ_H_OVER:	MOV	A,61H	;#####################
	CJNE	A,65H,SD_BJ_L_NEQ
SD_BJ_L_EQ:	CLR	P1.1
	LJMP	SD_BJ_L_OVER
SD_BJ_L_NEQ:	JNC	SD_BJ_L_OVER
	CLR	P1.1
SD_BJ_L_OVER:	MOV	A,66H	;#####################
	CLR	C
	SUBB	A,68H
	CJNE	A,61H,SD_CJ_H_NEQ
SD_CJ_H_EQ:	LJMP	SD_CJ_H_OVER
SD_CJ_H_NEQ:	JC	SD_CJ_H_OVER
	SETB	P1.0
SD_CJ_H_OVER:	MOV	A,65H	;#####################
	CLR	C
	ADD	A,67H
	CJNE	A,61H,SD_CJ_L_NEQ
SD_CJ_L_EQ:	LJMP	SD_CJ_L_OVER
SD_CJ_L_NEQ:	JNC	SD_CJ_L_OVER
	SETB	P1.1
SD_CJ_L_OVER:	RET
SE485:	CLR	EA
	CLR	RI
	PUSH	PSW	
	PUSH	A
	MOV	C,SM2
	JNC	RE_DATA	;如SM2=1則接收的為地址,SM2=0則接收的為數據(跳轉)
	MOV	A,SBUF
	CJNE	A,18H,SET_SM2	;地址不對跳轉置位SM2
	CLR	SM2
	LJMP	RS485-OVER
SET_SM2:	SETB	SM2
	LJMP	RS485-OVER
RE_DATA:	MOV	A,SBUF
	CJNE	A,#10100000B,NEXT485-1
	MOV	A,24H	;實際溫度,高位
	SETB	P3.7	;P3.7=1時發送數據
	MOV	SBUF,A
WAIT485-1:	JNB	TI,WAIT485-1
	CLR	TI
	CLR	P3.7
	SJMP	RS485-OVER
NEXT485-1:	CJNE	A,#10100001B,NEXT485-2
	MOV	A,23H	;實際溫度,低位
	SETB	P3.7	
	MOV	SBUF,A
WAIT485-2:	JNB	TI,WAIT485-2
	CLR	TI
	CLR	P3.7
	SJMP	RS485-OVER
NEXT485-2:	CJNE	A,#10100010B,NEXT485-3
	MOV	A,26H	;溫度上限
	SETB	P3.7	
	MOV	SBUF,A
WAIT485-3:	JNB	TI,WAIT485-3
	CLR	TI
	CLR	P3.7
	SJMP	RS485-OVER
NEXT485-3:	CJNE	A,#0100011B,NEXT485-4
	MOV	A,25H	;溫度下限
	SETB	P3.7
	MOV	SBUF,A
WAIT485-4:	JNB	TI,WAIT485-4
	CLR	TI
	CLR	P3.7
	SJMP	RS485-OVER
NEXT485-4:	CJNE	A,#10100100B,NEXT485-5
	MOV	A,2AH	;上限報警撤警之差
	SETB	P3.7
	MOV	SBUF,A
WAIT485-5:	JNB	TI,WAIT485-5
	CLR	TI
	CLR	P3.7
	SJMP	RS485-OVER
NEXT485-5:	CJNE	A,#10100101B,NEXT485-6
	MOV	A,29H	;下限報警撤警之差
	SETB	P3.7
	MOV	SBUF,A
WAIT485-6:	JNB	TI,WAIT485-6
	CLR	TI
	CLR	P3.7
	SJMP	RS485-OVER
NEXT485-6:	MOV	A,#0FFH	;命令發錯時返回,可以用來測試通信
	SETB	P3.7
	MOV	SBUF,A
WAIT485-7:	JNB	TI,WAIT485-7
	CLR	TI
	CLR	P3.7
	SJMP	RS485-OVER
RS485-OVER:	POP	A
	POP	PSW
	SETB	EA
	RETI	;串口中斷返回
DISPLAY2:	CLR	P2.7	;濕度部分顯示,小數位
	CLR	P2.6	
	CLR	P2.5	
	MOV	A,62H	
	MOV	DPTR,#DATA1	
	MOVC	A,@A+DPTR	
	ORL	A,#10000000B	;可以不寫,這是小數點位	
	MOV	P0,A	;小數一位	
	LCALL	DELAY1	
	MOV	P0,#0FFH	
	CLR	P2.7	;濕度個位
	CLR	P2.6	
	SETB	P2.5	
	MOV	A,63H	
	ANL	A,#0FH	
	MOV	DPTR,#DATA1	
	MOVC	A,@A+DPTR	
	ANL	A,#01111111B	;顯示小數點,個位	
	MOV	P0,A	
	LCALL	DELAY1	
	MOV	P0,#0FFH	
	MOV	A,63H	
	ANL	A,#0F0H	
	RR	A	
	RR	A	
	RR	A	
	RR	A	
	MOV	DPTR,#DATA1	
	MOVC	A,@A+DPTR	
	MOV	P0,A	;十位數	
	CLR	P2.7	
	SETB	P2.6	
	CLR	P2.5	
	LCALL	DELAY1	
	MOV	P0,#0FFH
	RET	
SD_SJ_CL:	CLR	C	
	;這里是濕度數據處理部分。
	;高頻A在5C5B
	;低頻B在5A59
	;當前測得頻率5857
	;子程序返回整數在5E,小數在5D
	;另外臨時使用到了70H、71H、72H、R0.
	;濕度16進制整數部分61H,小數部分60H.
	;轉成BCD碼后分別存于64H63H整數,62H小數
	MOV	A,58H	
	CJNE	A,#1CH,NEQ_P_ZH
	MOV	A,57H
	CJNE	A,#0B7H,NEQ_P_L
	CLR	A
	MOV	61H,A
	MOV	60H,A	;為最高頻率時,濕度為0
	LJMP	SD_P_OVER
NEQ_P_L:	JC	LOW_P_L
	LJMP	SD_P_OVER
LOW_P_L:	LJMP	LOW_P_H
NEQ_P_ZH:	JC	LOW_P_H
	CLR	A
	MOV	61H,A
	MOV	60H,A
	LJMP	SD_P_OVER
LOW_P_H:	CLR	C
	MOV	A,58H
	CJNE	A,#17H,NEQ_P_ZL
	MOV	A,57H
	CJNE	A,#91H,NEQ_P_L_D
	MOV	A,#100	;為最低頻率時,適度為100
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_L_D:	JC	LOW_P_L_D
	LJMP	HIGH_P_H_D
LOW_P_L_D:	MOV	A,#100	;為最低頻率時,適度為100
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_ZL:	JNC	HIGH_P_H_D
	MOV	A,#100	;為最低頻率時,適度為100
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
HIGH_P_H_D:	CLR	C
	MOV	A,58H
	CJNE	A,#1CH,	NEQ_P_0_10_GW
	MOV	A,57H
	CJNE	A,#38H,NEQ_P_0_10_DW
	MOV	A,#10
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_0_10_DW:	JC	P_0_10_GO
	LJMP	P_0_10_CL
NEQ_P_0_10_GW:	JC	P_0_10_GO
P_0_10_CL:	MOV	A,#1CH
	MOV	5CH,A
	MOV	A,#0B7H
	MOV	5BH,A	;高頻
	MOV	A,#1CH
	MOV	5AH,A
	MOV	A,#38H
	MOV	59H,A	;低頻
	LCALL	SD_P_CL
	MOV	A,5EH
	MOV	61H,A	;濕度整數部分
	MOV	A,5DH
	MOV	60H,A	;濕度小數部分
	LJMP	SD_P_OVER
P_0_10_GO:	CLR	C
	MOV	A,58H
	CJNE	A,#1BH,	NEQ_P_10_20_GW
	MOV	A,57H
	CJNE	A,#0BCH,NEQ_P_10_20_DW
	MOV	A,#20
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_10_20_DW:	JC	P_10_20_GO
	LJMP	P_10_20_CL
NEQ_P_10_20_GW:	JC	P_10_20_GO
P_10_20_CL:	MOV	A,#1CH
	MOV	5CH,A
	MOV	A,#38H
	MOV	5BH,A	;高頻
	MOV	A,#1BH
	MOV	5AH,A
	MOV	A,#0BCH
	MOV	59H,A	;低頻
	LCALL	SD_P_CL
	MOV	A,5EH
	ADD	A,#10
	MOV	61H,A
	MOV	A,5DH
	MOV	60H,A
	LJMP	SD_P_OVER
P_10_20_GO:	CLR	C
	MOV	A,58H
	CJNE	A,#1BH,	NEQ_P_20_30_GW
	MOV	A,57H
	CJNE	A,#40H,NEQ_P_20_30_DW
	MOV	A,#30
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_20_30_DW:	JC	P_20_30_GO
	LJMP	P_20_30_CL
NEQ_P_20_30_GW:	JC	P_20_30_GO
P_20_30_CL:	MOV	A,#1BH
	MOV	5CH,A
	MOV	A,#0BCH
	MOV	5BH,A	;高頻
	MOV	A,#1BH
	MOV	5AH,A
	MOV	A,#40H
	MOV	59H,A	;低頻
	LCALL	SD_P_CL
	MOV	A,5EH
	ADD	A,#20
	MOV	61H,A
	MOV	A,5DH
	MOV	60H,A
	LJMP	SD_P_OVER
P_20_30_GO:	CLR	C
	MOV	A,58H
	CJNE	A,#1AH,	NEQ_P_30_40_GW
	MOV	A,57H
	CJNE	A,#0C5H,NEQ_P_30_40_DW
	MOV	A,#40
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_30_40_DW:	JC	LOW_P_30_40_DW
	LJMP	P_30_40_CL
LOW_P_30_40_DW:	LJMP	P_30_40_GO
NEQ_P_30_40_GW:	JC	P_30_40_GO
P_30_40_CL:	MOV	A,#1BH
	MOV	5CH,A
	MOV	A,#40H
	MOV	5BH,A	;高頻
	MOV	A,#1AH
	MOV	5AH,A
	MOV	A,#C5H
	MOV	59H,A	;低頻
	LCALL	SD_P_CL
	MOV	A,5EH
	ADD	A,#30
	MOV	61H,A
	MOV	A,5DH
	MOV	60H,A
	LJMP	SD_P_OVER
P_30_40_GO:	CLR	C
	MOV	A,58H
	CJNE	A,#1AH,	NEQ_P_40_50_GW
	MOV	A,57H
	CJNE	A,#48H,NEQ_P_40_50_DW
	MOV	A,#50
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_40_50_DW:	JC	LOW_P_40_50_DW
	LJMP	P_40_50_CL
LOW_P_40_50_DW:	LJMP	P_40_50_GO
NEQ_P_40_50_GW:	JC	P_40_50_GO
P_40_50_CL:	MOV	A,#1AH
	MOV	5CH,A
	MOV	A,#0C5H
	MOV	5BH,A	;高頻
	MOV	A,#1AH
	MOV	5AH,A
	MOV	A,#48H
	MOV	59H,A	;低頻
	LCALL	SD_P_CL
	MOV	A,5EH
	ADD	A,#40
	MOV	61H,A
	MOV	A,5DH
	MOV	60H,A
	LJMP	SD_P_OVER
P_40_50_GO:	CLR	C
	MOV	A,58H
	CJNE	A,#19H,	NEQ_P_50_60_GW
	MOV	A,57H
	CJNE	A,#0C8H,NEQ_P_50_60_DW
	MOV	A,#60
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_50_60_DW:	JC	LOW_P_50_60_DW
	LJMP	P_50_60_CL
LOW_P_50_60_DW:	LJMP	P_50_60_GO
NEQ_P_50_60_GW:	JC	P_50_60_GO
P_50_60_CL:	MOV	A,#1AH
	MOV	5CH,A
	MOV	A,#48H
	MOV	5BH,A	;高頻
	MOV	A,#19H
	MOV	5AH,A
	MOV	A,#0C8H
	MOV	59H,A	;低頻
	LCALL	SD_P_CL
	MOV	A,5EH
	ADD	A,#50
	MOV	61H,A
	MOV	A,5DH
	MOV	60H,A
	LJMP	SD_P_OVER
P_50_60_GO:	CLR	C
	MOV	A,58H
	CJNE	A,#19H	NEQ_P_60_70_GW
	MOV	A,57H
	CJNE	A,#44H,NEQ_P_60_70_DW
	MOV	A,#70
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_60_70_DW:	JC	LOW_P_60_70_DW
	LJMP	P_60_70_CL
LOW_P_60_70_DW:	LJMP	P_60_70_GO
NEQ_P_60_70_GW:	JC	P_60_70_GO
P_60_70_CL:	MOV	A,#19H
	MOV	5CH,A
	MOV	A,#0C8H
	MOV	5BH,A	;高頻
	MOV	A,#19H
	MOV	5AH,A
	MOV	A,#44H
	MOV	59H,A	;低頻
	LCALL	SD_P_CL
	MOV	A,5EH
	ADD	A,#60
	MOV	61H,A
	MOV	A,5DH
	MOV	60H,A
	LJMP	SD_P_OVER
P_60_70_GO:	CLR	C
	MOV	A,58H
	CJNE	A,#18H,	NEQ_P_70_80_GW
	MOV	A,57H
	CJNE	A,#0CEH,NEQ_P_70_80_DW
	MOV	A,#80
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_70_80_DW:	JC	LOW_P_70_80_DW
	LJMP	P_70_80_CL
LOW_P_70_80_DW:	LJMP	P_70_80_GO
NEQ_P_70_80_GW:	JC	P_70_80_GO
P_70_80_CL:	MOV	A,#19H
	MOV	5CH,A
	MOV	A,#44H
	MOV	5BH,A	;高頻
	MOV	A,#18H
	MOV	5AH,A
	MOV	A,#0CEH
	MOV	59H,A	;低頻
	LCALL	SD_P_CL
	MOV	A,5EH
	ADD	A,#70
	MOV	61H,A
	MOV	A,5DH
	MOV	60H,A
	LJMP	SD_P_OVER
P_70_80_GO:	CLR	C
	MOV	A,58H
	CJNE	A,#18H	NEQ_P_80_90_GW
	MOV	A,57H
	CJNE	A,#2AH,NEQ_P_80_90_DW
	MOV	A,#90
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_80_90_DW:	JC	LOW_P_80_90_DW
	LJMP	P_80_90_CL
LOW_P_80_90_DW:	LJMP	P_80_90_GO
NEQ_P_80_90_GW:	JC	P_80_90_GO
P_80_90_CL:	MOV	A,#18H
	MOV	5CH,A
	MOV	A,#0CEH
	MOV	5BH,A	;高頻
	MOV	A,#18H
	MOV	5AH,A
	MOV	A,#2AH
	MOV	59H,A	;低頻
	LCALL	SD_P_CL
	MOV	A,5EH
	ADD	A,#80
	MOV	61H,A
	MOV	A,5DH
	MOV	60H,A
	LJMP	SD_P_OVER
P_80_90_GO:	CLR	C
	MOV	A,58H
	CJNE	A,#17H	NEQ_P_90_100_GW
	MOV	A,57H
	CJNE	A,#91H,NEQ_P_90_100_DW
	MOV	A,#100
	MOV	61H,A
	CLR	A
	MOV	60H,A
	LJMP	SD_P_OVER
NEQ_P_90_100_DW:	JC	LOW_P_90_100_DW
	LJMP	P_90_100_CL
LOW_P_90_100_DW:	LJMP	P_90_100_GO
NEQ_P_90_100_GW:	JC	P_90_100_GO
P_90_100_CL:	MOV	A,#58H
	MOV	5CH,A
	MOV	A,#2AH
	MOV	5BH,A	;高頻
	MOV	A,#57H
	MOV	5AH,A
	MOV	A,#91H
	MOV	59H,A	;低頻
	LCALL	SD_P_CL
	MOV	A,5EH
	ADD	A,#90
	MOV	61H,A
	MOV	A,5DH
	MOV	60H,A
	LJMP	SD_P_OVER
P_90_100_GO:	NOP
SD_P_OVER:	LCALL	SD_BCD
	RET
SD_P_CL:	CLR	C	;這里實現(A-F)*10/(A-B),得濕度的整數5EH和小數5DH.A為較高頻率,B為較低頻率
	MOV	A,5BH
	SUBB	A,59H
	CLR	C
	MOV	5FH,A	;實現A-B
	CLR	C
	MOV	A,5BH
	SUBB	A,57H	;實現A-F
	CLR	C
	MOV	B,#0AH
	MUL	AB	;(A-F)*10
	MOV	71H,A	;(A-F)*10低位
	MOV	72H,B	;(A-F)*10高位
	MOV	A,72H
	;72H71H/5FH
	MOV	R4,72H
	MOV	R5,71H
	MOV	R7,5FH
	LCALL	CHUFA
	MOV	5EH,R3	;R3整數部分,R4余數
	MOV	R5,#00H
	LCALL	CHUFA
	MOV	5DH,R3	;小數部分
	MOV	A,5DH
	CPL	A
	CLR	C
	ADD	A,#01H
	MOV	5DH,A
	JC	JIAN_10
	MOV	A,#9
	SUBB	A,5EH
	MOV	5EH,A
	LJMP	JIAN_9
JIAN_10:	MOV	A,#10
	SUBB	A,5EH
	MOV	5EH,A
JIAN_9:	CLR	C
	LJMP	EQ_OVER
EQ_0:	MOV	A,#0AH	;數值10
	CLR	C
	SUBB	A,5EH
	MOV	5EH,A	;上面計算的是距離濕度上值的數,所以要用10減
EQ_OVER:	RET
	;16進制轉BCD碼,整數在64H63H,小數在62H
SD_BCD:	MOV	A,61H
	MOV	R1,A
	CLR	C
	LCALL	BCD
	MOV	A,R5
	MOV	64H,A
	MOV	A,R4
	MOV	63H,A
	MOV	A,60H
	ANL	A,#0F0H
	RR	A
	RR	A
	RR	A
	RR	A
	CJNE	A,#00H,SDNEXT1
	MOV	A,#0
SDNEXT1:	CJNE	A,#01H,SDNEXT2
	MOV	A,#1
	LJMP	SDNEXT16
SDNEXT2:	CJNE	A,#02H,SDNEXT3
	MOV	A,#1
	LJMP	SDNEXT16
SDNEXT3:	CJNE	A,#03H,SDNEXT4
	MOV	A,#2
	LJMP	SDNEXT16	
SDNEXT4:	CJNE	A,#04H,SDNEXT5	
	MOV	A,#3	
	LJMP	SDNEXT16	
SDNEXT5:	CJNE	A,#05H,SDNEXT6	
	MOV	A,#3	
	LJMP	SDNEXT16	
SDNEXT6:	CJNE	A,#06H,SDNEXT7	
	MOV	A,#4	
	LJMP	SDNEXT16	
SDNEXT7:	CJNE	A,#07H,SDNEXT8	
	MOV	A,#4	
	LJMP	SDNEXT16	
SDNEXT8:	CJNE	A,#08H,SDNEXT9	
	MOV	A,#5	
	LJMP	SDNEXT16	
SDNEXT9:	CJNE	A,#09H,SDNEXT10	
	MOV	A,#6	
	LJMP	SDNEXT16	
SDNEXT10:	CJNE	A,#0AH,SDNEXT11	
	MOV	A,#6	
	LJMP	SDNEXT16	
SDNEXT11:	CJNE	A,#0BH,SDNEXT12	
	MOV	A,#7	
	LJMP	SDNEXT16	
SDNEXT12:	CJNE	A,#0CH,SDNEXT13	
	MOV	A,#8	
	LJMP	SDNEXT16	
SDNEXT13:	CJNE	A,#0DH,SDNEXT14	
	MOV	A,#8	
	LJMP	SDNEXT16	
SDNEXT14:	CJNE	A,#0EH,SDNEXT15	
	MOV	A,#9	
	LJMP	SDNEXT16	
SDNEXT15:	CJNE	A,#0FH,SDNEXT16	
	MOV	A,#9	
SDNEXT16:	MOV	62H,A	;濕度小數部分,十進制一位。
	RET
CHUFA:	CLR	C
	MOV	A,R4
	SUBB	A,R7
	JC	DV50
	SETB	OV
	RET
DV50:	MOV	R6,#8
DV51:	MOV	A,R5
	RLC	A
	MOV	R5,A
	MOV	A,R4
	RLC	A
	MOV	R4,A
	MOV	F0,C
	CLR	C
	SUBB	A,R7
	ANL	C,/F0
	JC	DV52
	MOV	R4,A
DV52:	CPL	C
	MOV	A,R3
	RLC	A
	MOV	R3,A
	DJNZ	R6,DV51
	CLR	OV
	RET
	ORG	30H	
	DB	C0H	
	DB	F9H	
	DB	A4H	
	DB	B0H	
	DB	99H	
	DB	92H	
	DB	82H	
	DB	F8H	
	DB	80H	
	DB	90H	
	DB	88H
	DB	80H
	DB	C6H
	DB	C0H
	DB	86H
	DB	8EH
DATA1:	EQU	30H	
	;本程序的機器周期為1.08507US,約為1US.	
	;R0、R1在延時時使用的臨時寄存器	
	;R2為發收數據的位數	
	;R6為溫度低位數據,R7為溫度高位數據。	
;主機控制DS18B20必須經過三個步驟:	初始化、ROM操作指令、存儲器操作指令。	
	;置位---復位600US---置位---等待60US---花30US判斷是否有低電平送來,如沒有復位標志位,初始化失敗,如有則花240US判斷是否有高電平送來----有則置位標志位,等待480US,無則復位標志位,初始化失敗.	
	;讀數據,置位---等2US---復位---等2US---置位---等待8US---讀端口----等60US---讀下一位數	
	;寫數據,復位,作為輸出口---等16US---向端口寫數據---等60US---置位---等2US---寫下一位數	
	END