wk.asm

汇编程序(cygnal c8051f021)

$INCLUDE(C8051F020.INC)
BIT_COUNT DATA 07FH
S1     DATA 07EH
S2    DATA 07DH
S3       DATA 07CH
S4 DATA  07BH
TIMER DATA 07AH
TIMER1 DATA 069H
DATA_IN   DATA 020H
DATA_OUT  DATA 021H

CLK BIT  P1.6
DAT BIT  P1.7
           ORG 0000H
					 JMP START
					 ORG 0100H
START:      mov   WDTCN, #0deh            ; disable watchdog timer
            mov   WDTCN, #0adh
            mov   OSCXCN, #67h            ; enable external crystal
                                          ; oscillator at 22.1184MHz

            clr   A                       ; wait at least 1ms 
            djnz  acc, $                  ;  wait ~512us
            djnz  acc, $                  ;  wait ~512us

osc_wait:                                 ; poll for XTLVLD-->1
            mov   a, OSCXCN
            jnb   acc.7, osc_wait

            orl   OSCICN, #08h            ; select external oscillator as 
                                          ; system clock source
            orl   OSCXCN, #80h            ; enable missing clock detector

CP1INIT: 	mov CPT1CN, #080h	  ; Comparator 1 Control Register
          mov A, #010h          ;CPT1CN
          djnz ACC, $           ;CPT1CN wait at least 20us
          anl CPT1CN, #not(30h)
          mov EIP1, #040h
					MOV TIMER,#50
PORTINIT:mov XBR2, #044h
         mov P0MDOUT, #001h 
DELAY0:  MOV TIMER1,#255
DELAY1:  DJNZ TIMER1,DELAY1
         DJNZ TIMER,DELAY0
				 ANL P5,#00H
				 MOV DATA_OUT,#10100100B
				 CALL SEND
				 MOV DATA_OUT,#0BFH
				 CALL SEND//TEST
				 CALL DELAY1S
				 CALL DELAY1SE
				 MOV DATA_OUT,#10100100B
				 CALL SEND//RESET
				 				 
TIME:		 MOV DATA_OUT,#10000000B
				 CALL SEND
				 MOV DATA_OUT,#00000000B
				 CALL SEND// 1
				 
				 MOV DATA_OUT,#10000001B
				 CALL SEND
				 MOV DATA_OUT,#00000000B
				 CALL SEND// 2

				 MOV DATA_OUT,#10000010B
				 CALL SEND
				 MOV DATA_OUT,#00001010B
				 CALL SEND// 3

				 MOV DATA_OUT,#10000011B
				 CALL SEND
				 MOV DATA_OUT,#00000000B
				 CALL SEND// 4

				 MOV DATA_OUT,#10000100B
				 CALL SEND
				 MOV DATA_OUT,#00000000B
         CALL SEND// 5
				 
				 MOV DATA_OUT,#10001000B
				 CALL SEND
				 MOV DATA_OUT,#11100000B
				 CALL SEND//SHAN
         
				 CALL DELAY1S
         MOV DATA_OUT,#10100100B
				 CALL SEND//RESET
                 
         MOV DATA_OUT,#10000010B
				 CALL SEND
				 MOV DATA_OUT,#00001010B
				 CALL SEND//SCREEN '-'
TI2:		 MOV R6,#00H
TIM2:    MOV R5,#00H
TIME2:	 MOV DATA_OUT,#10000011B
				 CALL SEND
				 MOV DATA_OUT,R5
				 CALL SEND// 4

				 MOV DATA_OUT,#10000100B
				 CALL SEND
				 MOV DATA_OUT,R6
         CALL SEND// 5
TI1:   	 MOV R4,#00H
TIM1:		 MOV R3,#00H
TIME1:	 MOV DATA_OUT,#11001000B
				 CALL SEND
				 MOV DATA_OUT,R3
				 CALL SEND// 1位
				 
				 MOV DATA_OUT,#11001001B
				 CALL SEND
				 MOV DATA_OUT,R4
				 CALL SEND// 2位
				 
				 CALL DELAY1S
         INC R3
				 CJNE R3,#0AH,TIME1
				 INC R4
				 CJNE R4,#06H,TIM1
				 INC R5
				 CJNE R5,#0AH,TIME2
				 INC R6
				 CJNE R6,#06H,TIM2
  					// 00-00  -- 59-59
   			 CALL DELAY1S
				 CALL DELAY1SE//DELAY

				 MOV DATA_OUT,#10100100B
				 CALL SEND

TIMED:	 MOV DATA_OUT,#10000000B
				 CALL SEND
				 MOV DATA_OUT,#00001010B
				 CALL SEND// 1 '-'
				 
				 MOV DATA_OUT,#10000001B
				 CALL SEND
				 MOV DATA_OUT,#0BH
				 CALL SEND// 2 'E'

				 MOV DATA_OUT,#11001010B
				 CALL SEND
				 MOV DATA_OUT,#04H
				 CALL SEND// 3 'Y'

				 MOV DATA_OUT,#11001011B
				 CALL SEND
				 MOV DATA_OUT,#0BH
				 CALL SEND// 4 'b'

				 MOV DATA_OUT,#10000100B
				 CALL SEND
				 MOV DATA_OUT,#0AH
         CALL SEND// 5 '-'
				 
				 MOV DATA_OUT,#10000101B
				 CALL SEND
				 MOV DATA_OUT,#0AH
         CALL SEND// 5 '-'

				 CALL DELAY1S
				 
				 MOV DATA_OUT,#10001000B
				 CALL SEND
				 MOV DATA_OUT,#11110001B
				 CALL SEND//SHAN
				 
				 CALL DELAY1S
				 CALL DELAY1S

				 MOV DATA_OUT,#10100100B
				 CALL SEND//RESET
				 JMP EXIT

SEND: MOV BIT_COUNT,#8         ;发送字符子程序
      ANL P5,#00H
      CALL LONG_DELAY
SEND_LOOP:MOV C,DATA_OUT.7
          MOV DAT,C
          SETB CLK
          MOV A,DATA_OUT
          RL A
          MOV DATA_OUT,A
          CALL SHORT_DELAY
          CLR CLK
          CALL SHORT_DELAY
          DJNZ BIT_COUNT,SEND_LOOP
          CLR DAT
          RET

LONG_DELAY:  MOV TIMER,#250         ;延时约200US
DELAY_LOOP:  DJNZ TIMER,DELAY_LOOP
             RET
SHORT_DELAY: MOV TIMER,#100         ;延时约20US
SHORT_LP:    DJNZ TIMER,SHORT_LP
             RET
DELAY1S:	  MOV TIMER,#200          ;延时约1S 
DELAY10:    MOV TIMER1,#20
              
DELAY11:  	CLR A
						DJNZ ACC,$
						DJNZ ACC,$
							 
						DJNZ TIMER1,DELAY11
						DJNZ TIMER,DELAY10
            
DELAY1SE:		MOV R1,#108
DELAYS:			MOV R0,#10
SS:			    CLR A
						DJNZ ACC,$
						DJNZ ACC,$
						DJNZ R0,SS
						DJNZ R1,DELAYS
						RET
EXIT:       AJMP EXIT
						END