在主機顯示學號姓名，利用通信功能，在從機也顯示同樣的內容。- ;發送端
- ;/通用寄存器R5用于錄入lcd1602的8位指令和數據
- ORG 000H
- LCD_PORT EQU P1
- COUNT EQU 30H
- RS EQU P2.5
- RW EQU P2.6
- EN EQU P2.7
- AJMP START
- ORG 00BH
- LJMP TIME0
- ORG 100H
- START:
- ;將自定義的八個字符寫入CGRAM
- ACALL ENABLE
- MOV P1,#40H
- ACALL ENABLE
- MOV DPTR,#SELF1
- CALL WSELF
- MOV P1,#48H
- ACALL ENABLE
- MOV DPTR,#SELF2
- CALL WSELF
- MOV P1,#50H
- ACALL ENABLE
- MOV DPTR,#SELF3
- CALL WSELF
- MOV P1,#58H
- ACALL ENABLE
- MOV DPTR,#SELF4
- CALL WSELF
- MOV P1,#60H
- ACALL ENABLE
- MOV DPTR,#SELF5
- CALL WSELF
- MOV P1,#68H
- ACALL ENABLE
- MOV DPTR,#SELF6
- CALL WSELF
- MOV P1,#70H
- ACALL ENABLE
- MOV DPTR,#SELF7
- CALL WSELF
- MOV P1,#78H
- ACALL ENABLE
- MOV DPTR,#SELF8
- CALL WSELF
- //定時器設置
- MOV TMOD,#00100001B
- SETB EA;總開關
- MOV PCON,#80H
- MOV TH1,#0FDH
- //初始化串口//方式1發送接收均初始化
- MOV SCON,#01010000B
- SETB TR1;定時器1開始運行
- ACALL LCD1602_init;初始化lcd1602
- ACALL PRINT0
- MAIN:
- MOV DPTR,#NUM_TAB
- MOV R0,#16
- ACALL DELAY5
- ACALL SEND_DATA
- NEXT:AJMP NEXT
- //發送數據，表地址放入dptr，發送數量放入R0
- SEND_DATA:
- INC R0
- MOV A,#00H;從首位開始
- SEND_DATA_0:
- DJNZ R0,SEND_DATA_1
- ret
- SEND_DATA_1:
- ACALL D5MS
- ACALL D5MS
- PUSH ACC
- MOVC A,@A+DPTR
- MOV SBUF,A
- ACALL D5MS
- POP ACC
- INC A
- WAIT:JBC TI,SEND_DATA_0//等待發送完成
- AJMP WAIT
- //寫指令，指令放入R5
- WRITE_COM:
- CLR RS ;(130)RS,RW,EN均置0，寫指令
- CLR RW
- CLR EN
- MOV LCD_PORT ,R5 ;(131)指令一律寫入R5，在移入P2
- SETB EN
- ACALL D5MS
- ACALL D5MS
- CLR EN ;(132)EN跳變，允許數據交換
- RET ;(134)返回原處
- //寫數據，數據放入R5
- WRITE_DATA:
- SETB RS ;(130)RS置1,RW,EN均置0，寫數據
- CLR RW
- CLR EN
- MOV LCD_PORT ,R5 ;(131)數據一律寫入R5，在移入P2
- //ACALL D5MS
- SETB EN
- ACALL D5MS
- ACALL D5MS
- CLR EN ;(132)EN跳變，允許數據交換
- RET ;(134)返回原處
- //初始化LCD1602
- LCD1602_init:
- MOV R5,#06H ;(144)8位數據，5*7點陣，2行顯示
- ACALL WRITE_COM
- MOV R5,#0CH ;(148)寫一個數據后，光標右移，屏幕不移動
- ACALL WRITE_COM
- MOV R5,#38H ;(146)顯示開，關光標，光標不閃爍
- ACALL WRITE_COM
- MOV R5,#01H ;(150)清屏
- ACALL WRITE_COM
- RET
- PRINT0:
- PUSH ACC;對A做保護
- PUSH 06
- PUSH 05
- MOV A,#00H
- MOV R3,#16
- MOV DPTR,#NUM_TAB
- PRINT0_0:
- PUSH ACC
- MOVC A,@A+DPTR
- MOV R5,#00H ;(49)命令載入R5
- ACALL WRITE_COM ;(50)寫命令
- MOV R5,A
- ACALL WRITE_DATA
- POP ACC
- INC A
- DJNZ R3,PRINT0_0
- POP 05
- POP 06
- POP ACC
- RET
- ENABLE:
- CLR RS
- CLR RW
- CLR EN
- ACALL D5MS
- ACALL D5MS
- SETB EN
- RET
-
- WSELF:
- MOV R7,#00H
- W1:
- MOV A,R7
- MOVC A,@A+DPTR
- CALL WRITE1
- INC R7
- CJNE R7,#08H,W1
- RET
- WRITE1:
- CLR EN
- SETB RS
- CLR RW
- SETB EN
- MOV P1,A
- CLR EN
- CALL D5MS
- CALL D5MS
- RET
- //計數器0中斷服務函數
- TIME0:
- PUSH ACC
- INC 30H
- MOV A,30H
- CJNE A,#02,RETIME;5*O.1S
- INC R3
- MOV 30H,#0
- RETIME:
- MOV TH0,#27H
- MOV TL0,#11H;重置定時器
- POP ACC
- RETI
- //延時5ms左右，已進行現場保護
- D5MS:
- PUSH 07
- PUSH 06
- MOV R7,#200
- DEL1:MOV R6,#125
- DEL2:DJNZ R6,DEL2
- DJNZ R7,DEL1
- POP 06
- POP 07
- RET
- //帶保護現場的延時
- DELAY5:
- PUSH 02
- PUSH 03
- PUSH 04
- MOV R2,#5
- DLY1:
- MOV R3,#200
- DLY2:
- MOV R4,#250
- DJNZ R4,$
- DJNZ R3,DLY2
- DJNZ R2,DLY1
- POP 04
- POP 03
- POP 02
- RET
- //學號
- NUM_TAB: DB "0123456789",20H,05H,20H,06H,20H,07H
- //姓名
- SELF1:DB 04H,1FH,15H,1FH,15H,1FH,04H,07H
- SELF2:DB 02H,0CH,04H,1FH,0EH,15H,15H,04H
- SELF3:DB 02H,0AH,06H,02H,1FH,02H,02H,02H
- SELF4:DB 0EH,04H,04H,04H,0EH,04H,04H,0EH
- SELF5:DB 0FH,0AH,0AH,1AH,1FH,0AH,0AH,0FH
- SELF6:DB 09H,01H,1DH,07H,15H,09H,15H,03H
- SELF7:DB 04H,1FH,04H,0AH,1FH,00H,1BH,0BH
- SELF8:DB 02H,1CH,10H,14H,1FH,04H,15H,0CH
-
- END
|
QQ好友和群
QQ空間
騰訊微博
騰訊朋友
收藏
淘帖
頂
踩
