PIC18F4523 + LCD DRIVER AY0438 + LCD DISPLAY 4 DIGITS, 32 SEGMENTS

Could you post teh shematic and code , inorder to help you ?

Thank you very much for trying to help me.
 
1- Schematic Proteus 7.7 SP2 (attached)
2- Routine in asm code that concerns my problem is the one bellow (comments in Brazilian  portuguese):
Note: Crystal 4 MHz
___________________________________________________________________________________________
#DEFINE          CLK             PORTE,0             ; Clock para o driver AY0438
 #DEFINE          DATAIN       PORTE,1             ; Entrada de dados para o driver AY0438
 #DEFINE          LOAD          PORTE,2             ; Load do driver AY0438
____________________________________________________________________________________________
CONVERTE 
;Converts binary to segments 
 
 ADDWF  PCL,F
 
 RETLW          B'01111110'   ; 00
 RETLW          B'00001100'   ; 01
 RETLW          B'10110110'   ; 02
 RETLW          B'10011110'   ; 03
 RETLW          B'11001100'   ; 04
 RETLW          B'11011010'   ; 05
 RETLW          B'11111010'   ; 06
 RETLW          B'00001110'   ; 07
 RETLW          B'11111110'   ; 08  
 RETLW          B'11011110'   ; 09
 
______________________________________________________________________________________________
 
; Routine from Datasheet  AY0438 -MICROCHIP 
DISPLAY
         BCF               LOAD                        ; Garante que LOAD=0 (opcional)
         MOVLW          .32                           ; W = 32
         MOVWF          COUNT                    ; COUNT = 32     (segmentos)

SERIAL_DISPLAY

 RRCF          DIG4,F                        ; Rotaciona a direita atraves do carry
 RRCF          DIG3,F                        ; Rotaciona a direita atraves do carry
 RRCF          DIG2,F                        ; Rotaciona a direita atraves do carry
 RRCF          DIG1,F                        ; Rotaciona a direita atraves do carry

 BSF             DATAIN
 BTFSS         STATUS,C                    ; Verifica se ja completou o giro (completou=>CARRY=1)
 BCF             DATAIN                        ; Completou: DATAIN=1; habilita o segmento , tornando-o visivel
 BSF             CLK                             ; Nao completou: 
 BCF             CLK                             ; Alterna os estados de CLOCK

 DECFSZ      COUNT,F                      ; Decresce COUNT de 1 e compara (=0?) 
 GOTO         SERIAL_DISPLAY         ; Nao: GOTO SERIAL_DISPLAY
 BSF              LOAD                          ; Sim: LOAD=1, faz a carga paralela dos dados no shift register
 NOP                                                 ; Aguarda 1 us 
 BCF              LOAD                          ; LOAD=0,habilita os Latches e desconecta os segmentos
 RETURN                                           ; Retorno da rotina DISPLAY
_________________________________________________________________________________________________ 
 
I am not sure, but I think the problem resides in Setup times and Hold times for AY0438.
 
Please do your best to help me.
The project is pending on this! 
BEST REGARDS

Hello Ernie,
It's a customized multimeter and clock-calendar for a Radio Transmitters supplier, friend of mine.
If you dont use this driver (AY0438) and feed the display directly throgh ports, it displays, according to the specifications of the "client";
1- Source and Module Tension (Example: 357 Volts, step 1 volt);
2- Source current (Example : 32,70 , step 0.1 Amp);
3 - Power and Reflected Power at antenna(Example:  0 to 5000 Watts, step 10 watts);
4- A Clock- Calendar , by interruption of TIMER0, with set and halt functions that controls the power of transmitter according to the month, hours and minutes to a determined region  of BRAZIL;
5- I could not send  3 includes, so I send in separate messages; 
 
But all this is curiosity, once my problem  is:
To write a small routine that sends 4 digits (already converted to segments) to a 32 segments display throhgh AY0438.
 
Thans for your interest.
 
Best regards

I can't get it to build with out the include files.

Can you drop your entire project into one zip file? Zips are one of the allowed file types here.

Ernie,
 
I kindly request you to inform your mail, so I can send the code, all includes and even the PROTEUS sketch.
My mail is:
emanueldegni@bol.com.br
 
I put everything into a  .rar, but the system systematicaly refuses to upload.
 
Best Regards
Emanuel - São Paulo
 
 

ARNIE,
 
1-Here goes the whole package in a .zip file;
 
2- I've tried your proposed tests;
 
3- The LCD display presents following behaviours (aleatory, every time you switch power On and Off):
a- Some segments lights and some blinks;
b- Part of segments lights and part not (08 -   )
c- Al segments lights (8.8.8.8);
d - No segments  lights at all (           ).
 
3- When you look @ the main code (DIGICAST.asm) attached,  please refer to lines 945 to 963 where you can find the problem (routine for AY0438).
 
4- Other informations:
a-Crystal is now 20 MHZ;
b- Capacitors 0.1 uF has been placed between VDD and VSS;
c- Code comments in Brazilian Portuguese.
 
Yours Sincerely

Hello,
I'm using the LASCAR DDM4 LCD, but I can not find a some example with C code for start. you can help me ?
Thank you