单片机温控程序.doc

; 温度控制程序 ;四键模式：功能键（P1.0）、移位键(P1.1)、加1键(P1.2)、闹钟取消键(P1.3)。 ;P1.0小数点作为秒显示 ;45H:闹铃延时计数 ADC_CON EQU 0C5H ADC_H EQU 0C6H ADC_L EQU 0BEH P1M0 EQU 91H P1M1 EQU 92H SETH EQU 36 SETL BIT P1.0 KJQ BIT P1.3 ORG 0000H AJMP MAIN ORG 000BH AJMP T00K ORG 0030H MAIN:MOV SP,#60H MOV P1M0,#01H MOV P1M1,#00H MOV P1,#0FFH MOV TMOD,#01H MOV TH0,#0ECH ;5MS MOV TL0,#78H MOV 14H,#200 ;中断次数 ;MOV 44H,#0 ;交替显示标志 SETB TR0 SETB ET0 SETB EA MOV 30H,#1 ;显示缓冲单元 MOV 31H,#1 MOV 32H,#1 MOV 33H,#1 MOV 10H,#0FEH ;记录显示位置 MOV 11H,#30H ;记录显示单元 MOV 12H,#0 ;功能键按下计数器 CLR 00H ; 按键状态 CLR 01H ; CLR 02H ; CLR 03H ; CLR 04H ; CLR 05H ;交替闪烁标志 CLR 06H ;继电器动作标志 MOV 26H,#SETL MOV 27H,#SETH MOV ADC_CON,#0E0H NOP ACALL ADCC KH1: JNB 04H,KH1 CLR 04H ACALL ADCC MOV A,R4 CLR C SUBB A,27H ;减上限 JNC KJ1 MOV A,R4 CLR C SUBB A,26H ;减下限 JNC KJ2 ;大于下限保持 CLR P1.3 ;小于下限，加热 SETB 06H SJMP KH1 KJ1:CLR 06H ;大于上限 SETB P1.3 ;停 KJ2:SJMP KH1 ;HH:SJMP HH ;ACALL KSMAO ;查按键,键扫描 ;TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT T00K:PUSH ACC ;T0中断子程序 PUSH PSW PUSH 00H PUSH 01H MOV TH0,#0ECH ;定时中断 MOV TL0,#78H DJNZ 14H,Z1 MOV 14H,#200 CPL 05H ;05H交替闪烁标志 JB 00H,KSAN ;00H按键标志 SETB 04H ;1秒钟到标志 SJMP Z1 KSAN: JNB 07H,Z1 JNB 05H,SAN1 MOV R0,35H MOV @R0,#10 SJMP SAN2 SAN1:MOV R0,35H MOV @R0,34H SAN2:NOP Z1:NOP ORL P2,#0FH ;灭 MOV A,11H MOV R0,A MOV A,@R0 MOV DPTR,#DDB MOVC A,@A+DPTR ;取段吗 MOV SCON,#00H MOV SBUF,A Z2:JNB TI,Z2 MOV A,10H ANL P2,A RL A MOV 10H,A INC 11H JB ACC.4,TK1 MOV 10H,#0FEH MOV 11H,#30H TK1: NOP DEC 13H ;健扫描延时 RETUN:POP 01H POP 00H POP PSW POP ACC RETI DDB:DB 0C0H,0F9H,0A4H,0B0H,99H ;段码表 DB 92H,82H,0F8H,80H,90H ;0--9 DB 0FFH ;E,-,n,灭 ; ;TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT T10MS:MOV R2,#20 ;10MS延时 SS2:MOV R3,#200 SS1:NOP NOP NOP DJNZ R3,SS1 DJNZ R2,SS2 RET ADCC: ;AD转换程序 NOP ORL ADC_CON,#08H ;启动AD N