这里是168点阵的字符代码

1、;This program is for 12232F;RS-P3.3;R/W-P3.1;E-P3.0;DB07-P1DIEQUP3.3RW EQUP3.1EEQUP3.0ORG0000HAJMPSTARTORG0003HLCALL PAUSESTART:MOV IE,#81H ;EXT. INT0 PERMITMOV IP,#01H ;INT0 IS FIRST INT. LEVELMOV TCON,#00H ;TIMER/COUNTER CONTROLER INIT.mov SP, #67hLCALL DELAYLCALL DELAYLCALL SETUPLCALL DEF_CHARMOV

2、 A,#80HLCALL WRITE_COMMOV R3,#8TEST11:MOV DPTR,#CGRAM1;CGRAM TESTLCALL WRITE_CGRAMDJNZ R3,TEST11MOV A,#90HLCALL WRITE_COMMOV R3,#8TEST12:MOV DPTR,#CGRAM1LCALL WRITE_CGRAMDJNZ R3,TEST12LCALL DELAYLCALL DELAYLCALL DELAYLCALL DELAYLCALL DELAYMOV A,#80HLCALL WRITE_COMMOV R3,#8TEST21:MOV DPTR,#CGRAM2LCAL

3、L WRITE_CGRAMDJNZ R3,TEST21MOV A,#90HLCALL WRITE_COMMOV R3,#8TEST22:MOV DPTR,#CGRAM2LCALL WRITE_CGRAMDJNZ R3,TEST22LCALL DELAYLCALL DELAYLCALL DELAYLCALL DELAYLCALL DELAYMOV A,#80HLCALL WRITE_COMMOV R3,#8TEST31:MOV DPTR,#CGRAM3LCALL WRITE_CGRAMDJNZ R3,TEST31MOV A,#90HLCALL WRITE_COMMOV R3,#8TEST32:M

4、OV DPTR,#CGRAM3LCALL WRITE_CGRAMDJNZ R3,TEST32LCALL DELAYLCALL DELAYLCALL DELAYLCALL DELAYLCALL DELAYMOV A,#80HLCALL WRITE_COMMOV R3,#8TEST41:MOV DPTR,#CGRAM4LCALL WRITE_CGRAMDJNZ R3,TEST41MOV A,#90HLCALL WRITE_COMMOV R3,#8TEST42:MOV DPTR,#CGRAM4LCALL WRITE_CGRAMDJNZ R3,TEST42LCALL DELAYLCALL DELAYL

5、CALL DELAYLCALL DELAYLCALL DELAYMOV A#80H;WORD TESTLCALL WRITE_COMMOV DPTR,#CHINESELCALL WRITE_HZMOV A,#90HLCALL WRITE_COMMOV DPTR,#TABLE1LCALL WRITE_ASCIILCALL DELAYLCALL DELAYLCALL DELAYLCALL DELAYLCALL DELAYMOV A#80HLCALL WRITE_COMMOV DPTR,#table1LCALL WRITE_asciiMOV A,#90HLCALL WRITE_COMMOV DPTR

6、,#chineseLCALL WRITE_hzLCALL DELAYLCALL DELAYLCALL DELAYLCALL DELAYLCALL DELAYAAA:LJMP STARTSETUP:LCALL DELAYLCALL DELAYLCALL DELAYMOV A,#01H;CLEAR DISPLAYLCALL WRITE_COMMOV A,#00110000B;FUNCTION SETTINGLCALL WRITE_COMMOV A,#00000010B;DDRAM SET TO 00HLCALL WRITE_COMMOV A,#00000100B;LCALL WRITE_COMMO

7、V A,#00001100B;DISPLAY ONLCALL WRITE_COMMOV A,#00000001B;CLEARING SCREENLCALL WRITE_COMMOV A,#10000000B;SET DDRAM ADDRESSLCALL WRITE_COMRETWRITE_COM:;WRIT/cv;WRITE COMMANDS TO ST7920LCALL DELAY1;INSTEAD OF CHECKING BF STATECLR RSCLR RSCLR RWCLR RWMOV P1,AMOV P1,ASETB ESETB ENOPNOPCLR ECLR E;LCALL DE

8、LAY1RETWRITE_DAT:;WRITE DISPLAY DATAS TO ST79220LCALL DELAY1SETB RSSETB RSCLR RWCLR RWMOV P1,AMOV P1,ASETB ESETB ENOPNOPCLR ECLR ERETDELAY1:MOV R7,#010HD11:MOV R6,#010HDJNZ R6,$DJNZ R7,D11RETDELAY:MOV R1,#00HD2:MOV R2,#00HDJNZ R2,$DJNZ R1,D2RETDEF_CHAR:;WRITE TO CGRAMMOV A,#01000000B;SET CGRAM ADDRE

9、SSLCALL WRITE_COMMOV R3,#8DEF1:MOV A,#000HLCALL WRITE_DATLCALL WRITE_DATMOV A,#0FFHLCALL WRITE_DATLCALL WRITE_DATDJNZ R3,DEF1MOV R3,#8DEF2:MOV A,#0AAHLCALL WRITE_DATLCALL WRITE_DATMOV A,#0AAHLCALL WRITE_DATLCALL WRITE_DATDJNZ R3,DEF2MOV R3,#8DEF3:MOV A,#055HLCALL WRITE_DATLCALL WRITE_DATMOV A,#0AAHL

10、CALL WRITE_DATLCALL WRITE_DATDJNZ R3,DEF3mov R3,#8DEF4:MOV A,#0FFHLCALL WRITE_DATLCALL WRITE_DATLCALL WRITE_DATLCALL WRITE_DATDJNZ R3,DEF4RETWRITE_ASCII:MOV R4,#16DDDD:CLR AMOVC A,A+DPTRLCALL WRITE_DATINC DPTRDJNZ R4,DDDDRETWRITE_HZ:;WRITE 8 CHINESE TO LCDMOV R4,#8DD:CLR AMOVC A,A+DPTRINC DPTRLCALL

11、WRITE_DATCLR AMOVC A,A+DPTRINC DPTRLCALL WRITE_DATDJNZ R4,DDRETWRITE_CGRAM:;CGRAM TESTINGCLR AMOVC A,A+DPTRLCALL WRITE_DATINC DPTRCLR AMOVC A,A+DPTRLCALL WRITE_DATRETPAUSE:SETBP3.2;PAUSE KEY PROCESSSETBP3.2LCALLDELAY1MOVC,P3.2MOVC,P3.2JNCPAUSE;CHECK KEY WAS PRESSEDPAUSE1:MOVC,P3.2MOVC,P3.2LCALLDELAY

12、1JCPAUSE1;CHECK KEY OPEN AFTER PRESSEDPAUSE2:SETBP3.2SETBP3.2LCALLDELAY1MOVC,P3.2MOVC,P3.2JNCPAUSE2;CHECK KEY WAS PRESSED AGAINRETITABLE1:;“这里是16*8点阵的字符代码”CGRAM1:DB 000H,000H ;这里是自造字符地址表 CGRAM2:DB 000H,002HCGRAM3:DB 000H,004HCGRAM4:DB 000H,006HCHINESE:;“这里是16*16点阵的汉字代码表”END以下为串口写指令和数据的子程序：WRITE_COM:

13、LCALL DELAY1;INSTEAD OF CHECKING BF STATESETB CSPUSH ACCMOV R0,#8MOV A,#11111000BCOMM1:CLR CRLC AMOV SID,CCLR CLKSETB CLKDJNZ R0,COMM1POP ACCMOV R5,AANL A,#0F0HMOV R0,#8COMM2:CLR CRLC AMOV SID,CCLR CLKSETB CLKDJNZ R0,COMM2MOV A,R5SWAP AANL A,#0F0HMOV R0,#8COMM3:CLR CRLC AMOV SID,CCLR CLKSETB CLKDJNZ R0,COMM3CLR CSRETWRITE_DAT:LCALL DELAY1SETB CSPUSH ACCMOV R0,#8MOV A,#11111010BDATA1:CLR CRLC AMOV SID,CCLR