【正文】 參考文獻 1. GB5011698《火災自動報警系統(tǒng)設計規(guī)范》，國家質量技術監(jiān)督局，中華人民共和國建設部聯(lián)合發(fā)布 ,1998 2.《電子報》，成都科技大學出版社，王有春 1993 年 (第二版 ),高等教育出版社 ,余孟嘗 ,1999年 數(shù) 字部分 ,高等教育出版社 ,康華光 ,2020 年 5. 電子技術基礎 模擬部分 ,高等教育出版社 ,康華光 ,1999 年 ,電子科技大學出版社 ,武慶生、仇梅， 2020 年 。************結束 OK ********** ******* END 。TDATA DATA 25 MOV R3, 4 MOV R2,00H MOV R4,00H MOV R5,00H MOV R7,10H CHU55:MOV A,R0 ADD A,R0 MOV R0,A MOV A,R1 ADDC A,R1 MOV R1,A MOV A,R2 ADDC A,R2 MOV R2,A MOV A,R4 ADD A,R4 MOV R4,A MOV A,R5 ADDC A,R5 MOV R5,A CJNE R2,4,LOOP05 LOOP05:JC LOOP15 MOV A,R2 SUBB A,R3 MOV R2,A MOV A,R4 ADD A,01H MOV R4,A MOV A,R5 ADDC A,00H MOV R5,A LOOP15:DJNZ R7,CHU55 RET。**************div4 subprogram*********** 。 Clock out a negative acknowledge bit (high). 。 SCL expected low on entry. Return with SCL low. 。 Destroys A. push b mov b, 8 x42: NOP rlc a mov SDA, c nop setb SCL nop nop nop nop clr SCL djnz b, x42 setb SDA nop nop setb SCL nop nop nop nop mov c, SDA clr SCL pop b ret shin:NOP 。 Called with data to send in A. 。 Shift out a byte to the AT24Cxx, most signific ant bit first. 。 Send STOP, defined as lowtohigh SDA with SCL high. 。 Verify bus availab le. jnb SDA, x40 jnb SCL, x40 nop clr SDA nop nop nop nop nop clr SCL clr c Ljmp x41 x40: setb c x41: ret。 Return with SCL, SDA low. 。 or that the addressed device failed to acknowled ge. PUSH b MOV b, a LCALL start JC x47 RL a ORL a, FADDR CLR LCALL shout JC x46 MOV a, address LCALL shout JC x46 MOV a, b LCALL rd_curr LJMP x47 x46: LCALL stop x47: pop b ret start:NOP 。 register pair ADDR_HI:ADDR_ LO. Returns data in A. 。 AT24Cxx Random Read function. 。n bsp。 Returns CY set to indicate that the bus is not availab le 。 AT24Cxx Current Address Read functio n. 。 or that the addressed device failed to acknowled ge. 。 Does not wait for write cycle to plete. 。Called with programmab le address in A, byte address in 。r7 放置 AD7416 溫度值高 2 位 ,r6 放置低 8 位 CLR C RET wr_byte:NOP。**********ad 7416 samping************ ad7416: MOV FADDR,090H MOV address,00h ii: MOV a,01h LCALL rd_rand CLR C RLC A MOV ,C RLC A MOV ,C MOV 4dh,a MOV ,C CLC c RLC A MOV ,C ANL a,11111100b MOV L_DATA,A MOV ,C MOV C,F0 MOV ,C MOV A,20H ANL A,00000011B MOV H_DATA,A RET MOV ADDr_ lo, 0 MOV address,00h 。*****************CONTROL JDQ****** *** CONTROL:MOV A,W_DATA CJNE A,S_H_DATA,COMPARE1 OPEN1:CLR JDQ AJMP CON_END COMPARE1:JNC OPEN1 MOV A,W_DATA CJNE A,S_L_DATA,COMPARE2 OPEN2:CLR JDQ AJMP CON_END COMPARE2:JC OPEN2 SETB JDQ CON_END:RET RET。***************key（按鍵） program ******* KEY:CLR tr0 JB WD_H_KEY,L_S ET LCALL DELL JB WD_H_KEY,L_S ET INC S_H_DATA MOV A,S_H_DATA CJNE A,7FH,S_DIS MOV S_H_DATA, 00H S_DIS: MOV A,S_H_DATA LCALL HEX_BCD MOV 69H,R5 MOV 6aH,R6 MOV 6BH,R7 MOV A,S_H_DATA LCALL HEX_BCD MOV 69H,A MOV 6AH,B MOV FADDR,0A0H MOV address,00h MOV addr_hi, 00h MOV a,00h MOV ZDATA,S_ H_ DATA LCALL wr_byte S_REP:LCALL DIS JNB WD_H_KEY,S_REP L_SET:JB WD_L_KEY,S ET_ END LCALL DELL JB WD_L_KEY,S ET_ END INC S_L_DATA MOV A,S_L_DATA CJNE A,7FH,M_ DIS MOV S_L_DATA, 00H M_DIS:MOV A,S_L_DATA LCALL HEX_BCD MOV 6cH,R5 MOV 6dH,R6 MOV 6eH,R7 MOV FADDR,0A0H MOV address,01h MOV addr_hi,00h MOV a,00h MOV ZDATA,S_ L_ DATA LCALL wr_byte