;~~~~~~~~~~~~ ;P4-6-1.ASM ~ ;~~~~~~~~~~~~ SYMBOLS RS REG P2.0 EN REG P2.1 PICK REG P3.0 RELAY0 REG P3.1 RELAY1 REG P3.6 RELAY2 REG P3.

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1 ;~~~~~~~~~~~~ ;P4-6-1.ASM ~ ;~~~~~~~~~~~~ SYMBOLS RS REG P2.0 EN REG P2.1 PICK REG P3.0 RELAY0 REG P3.1 RELAY1 REG P3.6 RELAY2 REG P3.7 PASS1 REG 70H PASS2 REG 71H TURN REG 72H IN_CODE REG 73H TIME REG 74H OVER_T REG 75H R_DATA REG 76H ON EQU 0 OFF EQU 1 HANDUP EQU 10 ; HAND UP TIME ENDCODE EQU 0FFH ORG 0 JMP START ; INT0 INTERRUPTING ORG 03 JMP DTMF_INPUT ; INT1 INTERRUPTING ORG 13H JMP PHONE_RING ; T1 INTERRUPTING ORG 1BH JMP HANDUP_TIME ; INT0 INTERRUPTING

2 DTMF_INPUT: PUSH A MOV A, P2 SWAP A ANL A, # B ; MASK P2.4-P2.7 CALL PHONE_TABLE ; NUMBER TO ASCII MOV IN_CODE, A MOV OVER_T, #HANDUP ; SET NEXT KEY TIME POP A I ; INT1 INTERRUPTING PHONE_RING: DJNZ R_DATA, END_RING MOV R_DATA, #5 SETB PICK ; SET PHONE_RELAY TO PICK UP MOV OVER_T, #HANDUP ; SET NEXT KEY TIME END_RING: I ; T1 INTERRUPTING HANDUP_TIME: PUSH A MOV TH1, #>( ) MOV TL1, #<( ) DJNZ TIME, END_T1 MOV TIME, #100 MOV A, OVER_T JZ ENDUP DEC OVER_T END_T1: POP A I ENDUP: CLR PICK JMP END_T1 PHONE_TABLE: INC A

3 MOVC DB -1,'1','2','3','4','5','6','7','8','9','0','*','#',-1,-1,-1 ; MAIN PROGRAM STARTING START: MOV TMOD, # B ; T0,T1:MODE1 MOV IE, # B ; ENABLE T1,INT0,INT1 INTERRUPT MOV R_DATA, #5 ; RING 5 TIMES MOV P2, # B ; RELAY0,1,2,PICK=0 MOV IN_CODE, #-1 ; NO PHONE CODE IN CALL INIT_LCD ; INITIAL LCD MOV PASS1, #'1' MOV PASS2, #'2' AGAIN: CALL CLEAR_LCD MOV DPTR, #PASSWORD ; SHOW PASSWORD CALL DISPMESS ; GET 2 CHAR CHECK1_KEYIN: CALL KEYIN JC KEY1_SET ; IF KEY PRESSED, GO TO KEY1_SET WAIT1_PHONE: JNB PICK, CHECK1_KEYIN $1 CALL GET_CODE JNC KEY1_SET ; IF PHONE CODE IN, GO TO KEY1_SET JNB PICK, AGAIN ; IF HAND UP, RESTART AGAIN JMP $1 KEY1_SET: CALL KEYIN ; DEBOUNCE JNC KEY1_SET CALL DELAY25MS MOV R2, A CALL OUT_CHAR CHECK2_KEYIN: CALL KEYIN

4 JC KEY2_SET ; IF KEY PRESSED, GO TO KEY2_SET WAIT2_PHONE: JNB PICK, CHECK2_KEYIN $2 CALL GET_CODE JNC KEY2_SET ; IF PHONE CODE IN, GO TO KEY2_SET JNB PICK, AGAIN ; IF HAND UP, RESTART AGAIN JMP $2 KEY2_SET: CALL KEYIN ; DEBOUNCE JNC KEY2_SET CALL DELAY25MS MOV R3, A CALL OUT_CHAR MOV A, R2 CJNE A, PASS1, ERROR ; FIRST KEY <> '1' MOV A, R3 CJNE A, PASS2, ERROR ; SECOND KEY <> '2' CALL CLEAR_LCD MOV DPTR, #OK ; DISPLAY 'O.K.!!' CALL DISPMESS CHECK3_KEYIN: CALL KEYIN JC KEY3_SET ; IF KEY PRESSED, GO TO KEY3_SET WAIT3_PHONE: JNB PICK, CHECK3_KEYIN $3 CALL GET_CODE JNC KEY3_SET ; IF PHONE CODE IN, GO TO KEY3_SET JNB PICK, RESTART0 ; IF HAND UP, RESTART AGAIN JMP $3 KEY3_SET: CALL KEYIN ; DEBOUNCE JNC KEY3_SET CALL DELAY25MS CJNE A, #'*', CHECK_OFF

5 MOV TURN, A JMP GET_NO ; GET NUMBER CHECK_OFF: CJNE A, #'#', RESTART0 MOV TURN, A GET_NO: CHECK4_KEYIN: CALL KEYIN JC KEY4_SET ; IF KEY PRESSED, GO TO KEY4_SET WAIT4_PHONE: JNB PICK, CHECK4_KEYIN $4 CALL GET_CODE JNC KEY4_SET ; IF PHONE CODE IN, GO TO KEY4_SET JNB PICK, RESTART0 ; IF HAND UP, RESTART AGAIN JMP $4 KEY4_SET: CALL KEYIN ; DEBOUNCE JNC KEY4_SET CALL DELAY25MS CJNE A, #'2', CHECK_1NO MOV A, TURN CJNE A, #'*', TURN_2OFF TURN_2ON: SETB RELAY2 JMP AGAIN TURN_2OFF: CLR RELAY2 JMP AGAIN ERROR: CALL CLEAR_LCD MOV DPTR, #ER ; DISPLAY 'ERROR!!' CALL DISPMESS JMP AGAIN

6 CHECK_1NO: CJNE MOV CJNE TURN_1ON: SETB JMP TURN_1OFF: CLR JMP CHECK_0NO: CJNE MOV CJNE TURN_0ON: SETB RESTART0: JMP TURN_0OFF: CLR JMP PASSWORD: DB OK: DB ER: DB A, #'1', CHECK_1NO A, TURN A, #'*', TURN_1OFF RELAY1 AGAIN RELAY1 AGAIN A, #'0', RESTART0 A, TURN A, #'*', TURN_0OFF RELAY0 AGAIN RELAY0 AGAIN 'PASSWORD:', ENDCODE 'O.K.!!', ENDCODE 'ERROR!!', ENDCODE ; READ THE INPUT PHONE NUMBER GET_CODE: MOV A, #-1 XCH A, IN_CODE ADD A, #1 DEC A

7 ; BELL 2K HZ 3 TIMES BELL: MOV R7, #150 BELLLOOP: SETB T0 CALL DELAY0.25MS CLR T0 CALL DELAY0.25MS DJNZ R7, BELLLOOP MOV R6, #20 DELAYLOOP: CALL DELAY25MS DJNZ R6, DELAYLOOP ; 8 BITS,2 LINES,5X10 DOTS INIT_LCD: MOV P0, #3FH ; FUNCTION SET CLR RS ; RS=0 CALL WRITE ; SET DISPLAY ON,CURSOR ON,CURSOR BLINKING MOV P0, #0FH ; DISPLAY ON CLR RS ; RS=0 CALL WRITE ; CLEAR DISPLAY, HOME CURSOR, ADDR=00H CLEAR_LCD: MOV P0, #01H CLR RS ; RS=0 CALL WRITE CALL DELAY1MS CALL DELAY1MS ; TRIGGER EN LINE, AND WAIT FOR A WHILE WRITE: CLR EN ; EN=0

8 SETB EN ; EN=1 CLR EN ; EN=0 CALL DELAY1MS ; DISPLAY A STRING ENDED BY ENDCODE DISPMESS: PUSH A PUSH 0 MOV R0, #0 DISP_AGAIN: MOV A, R0 MOVC CJNE A, #ENDCODE, CH_OUT POP 0 POP A CH_OUT: CALL OUT_CHAR INC R0 LJMP DISP_AGAIN ; PUT A CHAR TO LCD OUT_CHAR: MOV P0, A SETB RS ; RS=1 CALL WRITE KEYIN: PUSH 0 PUSH 1 PUSH 2 MOV R0, #0 ; R0 = THE KEY NO. MOV R2, #0FEH ; R2 = THE SCANNING CODE KROW: MOV R1, #4 ; R1 = THE COLUMNS(LINES) MOV P1, R2 ; P0 : OUTPUT PORT

9 CALL DELAY1MS MOV A, P1 ; P1 : INPUT PORT SWAP A ; CHANGE P1.4-7 TO A.0-3 KCOL: RRC A ; Carry = A.0 JNC KEYPRESSED ; IF Carry=0 THEN GOTO KEYPRESSED INC R0 ; OTHERWISE R0<-R0+1 DJNZ R1, KCOL ; TO CHECK THE LINE NO. MOV A, R2 ; IF 4 LINES HAS BEEN SCANNED RL A ; SHIFT SCAN DATA TO NEXT LINE MOV R2, A JNB A.4, NO_KEY ; TO CHECK IF THE 4 ROWS SCANNED LJMP KROW ; IF NOT GOTO KROW NO_KEY: CLR C ; IF NO KEY PRESSED THEN Carry = 0 KEY_END: POP 2 POP 1 POP 0 KEYPRESSED: MOV A, R0 MOV DPTR, #KEY_TABLE MOVC SETB C ; TO SET Carry = 1 LJMP KEY_END ; GO BACK KEY_TABLE: DB ' *0# ' DELAY0.25MS: ; DELAY 0.25 mini SEC. MOV TH0, #>( ) MOV TL0, #<( ) SETB TR0 JNB TF0, $ CLR TF0 CLR TR0 DELAY1MS: ; DELAY 1 mini SEC.

10 MOV TH0, #>( ) MOV TL0, #<( ) SETB TR0 JNB TF0, $ CLR TF0 CLR TR0 DELAY25MS: MOV TH0, #>( ) MOV TL0, #<( ) SETB TR0 JNB TF0, $ CLR TF0 CLR TR0 ; DELAY 25 mini SEC.

Microcontroller Intel [Instruction Set]

Microcontroller Intel [Instruction Set] Microcontroller Intel 8051 [Instruction Set] Structure of Assembly Language [ label: ] mnemonic [operands] [ ;comment ] Example: MOV R1, #25H ; load data 25H into R1 2 8051 Assembly Language Registers