请问一下 我的程式码在APP01上的一行LCD上可以显示，但最近换了一个四行的LCD，加了程式码却 只能显示2行，不知道是哪里的设定有问题?可以麻烦帮我看一下吗? 附加档案在文章底部(LCD Datasheet & 程式码) http://0rz.tw/NReDT ----------------------------------------- list p=18f4585 #include <p18f4585.inc> EXTERN InitLCD,putcLCD,Send_Cmd,L1homeLCD,L2homeLCD,L3homeLCD,L4homeLCD,clrLCD, PutHexLCD PUT_Address macro STR movlw UPPER STR movwf TBLPTRU movlw HIGH STR movwf TBLPTRH movlw LOW STR movwf TBLPTRL call Put_String endm start code org 0x00 bra start prog code start call InitLCD call clrLCD call L1homeLCD PUT_Address String_1 call L2homeLCD PUT_Address String_2 call L3homeLCD PUT_Address String_3 call L4homeLCD PUT_Address String_4 bra $ Put_String TBLRD*+ movlw 0x00 cpfseq TABLAT,0 bra Send_String return Send_String movf TABLAT,w,0 call putcLCD bra Put_String String_1 db "First ",0x00 String_2 db "Second",0x00 String_3 db "Third",0x00 String_4 db "Fourth",0x00 end end --------------------------------------LCD设定 list p=18f4585 #include <p18f4585.inc> global InitLCD global putcLCD global clrLCD global L1homeLCD global L2homeLCD global L3homeLCD global L4homeLCD global Send_Cmd global PutHexLCD global Hex2ASCII global Delay_xMS global Delay_1ms LCD_CTRL equ TRISD LCD_DATA equ LATD #define LCD_E_DIR TRISA,2 ;pin RA2=LCD_E #define LCD_RW_DIR TRISD,5 #define LCD_RS_DIR TRISD,4 #define LCD_E LATA,2 #define LCD_RW LATD,5 #define LCD_RS LATD,4 CLR_DISP equ b'00000001' Cursor_Home equ b'00000010' ENTRY_DEC equ b'00000100' ENTRY_DEC_S equ b'00000101' ENTRY_INC equ b'00000110' ENTRY_INC_S equ b'00000111' DISP_OFF equ b'00001000' DISP_ON equ b'00001100' DISP_ON_C equ b'00001110' DISP_ON_B equ b'00001111' FUNC_SET equ b'00101000' CG_RAM_ADDR equ b'01000000' DD_RAM_ADDR equ b'10000000' ;DD_RAM_UL equ 0x080 ; Upper Left coner of the Display UDATA LCD_Byte RES 1 LCD_Temp RES 1 Count_100us RES 1 Count_1ms RES 1 Count_ms RES 1 W_BUFR RES 1 Hex_Bfr RES 1 LCD_CODE CODE InitLCD banksel TRISD clrf TRISD clrf LATD clrf TRISA clrf LATA banksel LCD_DATA bcf LCD_E bcf LCD_RW bcf LCD_RS bcf LCD_E_DIR bcf LCD_RW_DIR bcf LCD_RS_DIR banksel LCD_DATA clrf LCD_DATA banksel ADCON1 movlw b'00001101' movwf ADCON1 banksel ADCON2 movlw b'00001011' movwf ADCON2 banksel LCD_CTRL movf LCD_CTRL,w andlw 0xF0 movwf LCD_CTRL movlw .10 ;power on delay 10ms rcall Delay_xMS movlw b'00000011' rcall Send_Low_4bit movlw .10 rcall Delay_xMS movlw b'00000011' rcall Send_Low_4bit rcall Delay_1ms movlw b'00000011' rcall Send_Low_4bit rcall Delay_1ms movlw b'00000010' rcall Send_Low_4bit rcall Delay_1ms movlw FUNC_SET rcall Send_Cmd rcall Delay_1ms movlw DISP_ON rcall Send_Cmd rcall Delay_1ms banksel CLR_DISP movlw CLR_DISP rcall Send_Cmd movlw .5 rcall Delay_xMS banksel ENTRY_INC movlw ENTRY_INC rcall Send_Cmd rcall Delay_1ms banksel DD_RAM_ADDR movlw DD_RAM_ADDR rcall Send_Cmd rcall .5 rcall Delay_xMS banksel ENTRY_INC movlw ENTRY_INC rcall Send_Cmd rcall Delay_1ms banksel DD_RAM_ADDR movlw DD_RAM_ADDR rcall Send_Cmd rcall Delay_1ms return putcLCD banksel LCD_Byte movwf LCD_Byte rcall Send_High_LCD banksel LCD_Byte movf LCD_Byte,W rcall Send_Low_LCD rcall Delay_100us return Send_High_LCD swapf WREG,W Send_Low_LCD banksel LATD bcf LCD_RW andlw 0x0F banksel LCD_Temp movwf LCD_Temp banksel LCD_DATA movf LCD_DATA,W andlw 0xF0;0x0F banksel LCD_Temp iorwf LCD_Temp,W banksel LCD_DATA movwf LCD_DATA ;DB[4:7] banksel LATD bsf LCD_RS bcf LCD_RW nop banksel LATA bsf LCD_E nop ;movlw .10 ;bra Delay_xMS bcf LCD_E return PutHexLCD banksel W_BUFR movwf W_BUFR swapf W_BUFR,W rcall Hex2ASCII rcall putcLCD banksel W_BUFR movf W_BUFR,W rcall Hex2ASCII rcall putcLCD return Hex2ASCII andlw 0xF0 banksel Hex_Bfr movwf Hex_Bfr sublw .09 banksel STATUS btfsc STATUS,C bra _Add_W_30 _Add_W_37 movlw 0x37 bra _Hex_cont _Add_W_30 movlw 0x30 _Hex_cont banksel Hex_Bfr addwf Hex_Bfr,W return Send_Cmd banksel LCD_Byte movwf LCD_Byte rcall Send_High_4bit banksel LCD_Byte movf LCD_Byte,W rcall Send_Low_4bit rcall Delay_100us return Send_High_4bit swapf WREG,W Send_Low_4bit ;bcf LCD_RW;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; andlw 0x0F banksel LCD_Temp movwf LCD_Temp banksel LCD_DATA movf LCD_DATA,W andlw 0xF0 banksel LCD_Temp iorwf LCD_Temp,W banksel LCD_DATA movwf LCD_DATA ;DB[4:7] banksel LATD bcf LCD_RS bcf LCD_RW nop banksel LATA bsf LCD_E nop ;movlw .10 ;bra Delay_xMS bcf LCD_E return clrLCD banksel CLR_DISP movlw CLR_DISP rcall Send_Cmd movlw .5 bra Delay_xMS L1homeLCD banksel DD_RAM_ADDR movlw DD_RAM_ADDR|0x00 rcall Send_Cmd bra Delay_100us L2homeLCD banksel DD_RAM_ADDR movlw DD_RAM_ADDR|0x14 rcall Send_Cmd bra Delay_100us L3homeLCD banksel DD_RAM_ADDR movlw DD_RAM_ADDR|0x40 rcall Send_Cmd bra Delay_100us L4homeLCD banksel DD_RAM_ADDR movlw DD_RAM_ADDR|0x54 rcall Send_Cmd bra Delay_100us Delay_xMS banksel Count_ms movwf Count_ms _D_ms call Delay_1ms banksel Count_ms decfsz Count_ms,F goto _D_ms return Delay_1ms movlw .10 banksel Count_1ms movwf Count_1ms _D_1ms call Delay_100us banksel Count_1ms decfsz Count_1ms,f bra _D_1ms return Delay_100us movlw .50 banksel Count_100us movwf Count_100us _D_2us nop nop banksel Count_100us decfsz Count_100us,f bra _D_2us return end --

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