??? 07/29/04 07:40 Read: times Msg Score: 0 -1 Gimmee Code +1 Underrated |
#75074 - RE: LCD Problem. Responding to: ???'s previous message |
Hi Arif,
Try the below code. Regards, Charlie Bannister $MOD51 ;LCD Module testing programe ;D7 - D0 on P1 ;RS on P3.0 ;R/W on P3.1 ;E on P3.2 ORG 0000H MOV A, #38H ;2 LINE, 5*7 CHAR ACALL COMNWRT ACALL DELAY MOV A, #0EH ;Display ON, Cursor OFF ACALL COMNWRT ACALL DELAY MOV A, #01H ;Cleasr display screen ACALL COMNWRT ACALL DELAY MOV DPTR, #0FFFH mov r0, #0x08 ;;======> set up 8 byte counter BACK: CLR A MOVC A, @A+DPTR JZ ENDD ACALL DATAWRT ACALL DELAY INC DPTR djnz r0, BACK ;;======> MOV A,#0C0h ;;======> 2nd line change address ACALL COMNWRT ;;======> ACALL DELAY ;;======> SJMP BACK ENDD: SJMP ENDD COMNWRT: MOV P1, A CLR P3.0 ;RS = 0 NOP NOP CLR P3.1 ;R/W = 0 NOP NOP SETB P3.2 ;E = 1 NOP NOP CLR P3.2 ;E = 0 RET DATAWRT: MOV P1, A SETB P3.0 ;RS = 1 NOP NOP CLR P3.1 ;R/W = 0 NOP NOP SETB P3.2 ;E = 1 NOP NOP CLR P3.2 ;E = 0 RET DELAY: MOV R3, #50H HERE2: MOV R4, #255H HERE: DJNZ R4, HERE DJNZ R3, HERE2 RET ORG 0FFFH DB 'Testing LCD Work',0 ; ....x....x....x. ; 5 10 15 ; ^ END |
Topic | Author | Date |
LCD Problem. | 01/01/70 00:00 | |
RE: LCD Problem. | 01/01/70 00:00 | |
RE: LCD Problem. | 01/01/70 00:00 | |
RE: LCD Problem. | 01/01/70 00:00 | |
RE: LCD Problem. | 01/01/70 00:00 | |
LCD User`s Manual. | 01/01/70 00:00 | |
RE: LCD User`s Manual.![]() | 01/01/70 00:00 | |
RE: LCD Problem. | 01/01/70 00:00 | |
Thanks Mr. Charles | 01/01/70 00:00 | |
Yes now my LCD module is working. | 01/01/70 00:00 |