Lcd Menu

I speak a little english
I need a lcd menu with three or four levels, with submenu, with keypad
if I press a key from keypad then goto the first level if I pres the same key goto the second level etc.
each level may have a number for example
first level
1.motor
2.lamp

second level

3.servo
4.Temp

third level
5.Optional

so, when I press the key number one from keypad goto the submenu motor, because motor is the
first menu in this submenu will be a program. The lcd is 2*26 hitachi controller, pbp 2.42.
I am making the program but I am lost. help me please I am very lost.
my email [email protected].

Is your keypad routine's working. If so, can you post your code here? With your current stuff, we can provide you some idea. It can be as simple then using BRANCH or BRANCHL statement from PBP.

eliecer

as Steve has already mentioned,
if you post the code you have so far,
and some information about your hardware
(i.e. are you using a matrix-keypad, or just some buttons) etc.

we will have a look at it.

If you are going to setup "complex" menu structures
the display text will "eat up" a lot of codespace.

to solve that problem have a look at This

this is my code example with buttons I made this code myself. I simulate those examples with
proteus 5.2 lite if you have proteus, tell me and send you by mail the examples.this lcd if for 2*16.
PIC16f873. I post the pictures like attached file. I am using buttons from portc.0 up to portc.7.
if press portc.0 several times this dislay on lcd the diferent levels. this code is good but
I need a button(for example, portc.1 etc) to enter the submenu 1, other button to enter the submenu 2, etc.
other button for back. the same is to keypad(key number one to enter first submenu etc).
you can choose the easily code(buttons or keypad).


' Define LCD connections
DEFINE LCD_DREG PORTB
DEFINE LCD_DBIT 4
DEFINE LCD_RSREG PORTB
DEFINE LCD_RSBIT 0
DEFINE LCD_EREG PORTB
DEFINE LCD_EBIT 2


' Define program variables
b0 var byte

ADCON1= 7 ' Make PORTA and PORTE digital

low portb.1

lcdout $fe,1, " RED"
lcdout $fe,$c0," ELECTRICA"

loop: if portc.0=0 then
b0=b0+1

select case b0

case 1
gosub retardo
lcdout $fe,1,"1.Motor"
lcdout $fe,$c0,"2.Lampara"

case 2
gosub retardo
lcdout $fe,1,"3.Temperatura"
lcdout $FE,$c0,"4.Servo"

case 3
gosub retardo
lcdout $fe,1,"5.Opcional"

end select
endif
goto loop

End

retardo:
pause 250
return





This is my code example with keypad I get the routine keypad on internet.
this code is for lcd 4*16 but I have a lcd 2*16

' Define LCD connections
DEFINE LCD_DREG PORTC
DEFINE LCD_DBIT 4
DEFINE LCD_RSREG PORTC
DEFINE LCD_RSBIT 1
DEFINE LCD_EREG PORTC
DEFINE LCD_EBIT 3


' Define program variables
col VAR BYTE ' Keypad column
row VAR BYTE ' Keypad row
key VAR BYTE ' Key value
disp_key VAR BYTE ' Key ASCII value
b0 var byte
OPTION_REG.7 = 0 ' Enable PORTB pullups (16F877)

ADCON1 = 7 ' Make PORTA and PORTE digital
low PORTC.2
Pause 150 ' Wait for LCD to start

LCDOut $fe, 1, " RED" ' Display sign on message
LCDOUT $fe,$C0," ELECTRICA"



' Get a key from the keypad
loop: GoSub getkey ' Check to see if a key was pressed
if key =$c then


lcdout $fe,1,"1.Motor"
lcdout $fe,$C0,"2.Lampara"
lcdout $fe,144,"3.Servo"
lcdout $fe,208,"4.Temperatura"
endif




if key =$d then
lcdout $fe,1,"5.opcional"

endif

goto loop ' Do it forever


' Subroutine to get a key from keypad
getkey:
' Check for keypress
For row = 0 TO 3 ' Loop for 4 rows in keypad
PORTB = 0 ' All output pins low
TRISB = ~(DCD row) ' Set one row pin to output
'@ NOP ' Fudge for 18F452
col = PORTB >> 4 ' Read column pins

IF col != $0F Then ' Check if key is pressed

' Begin speaker tick
GoTo gotkey ' If any keydown, exit
EndIF
Next row ' Repeat for the next row

key = $FF ' No keys down, set key to $FF

Return ' Return to main loop

gotkey: ' Change row and column to key number 0 - 15
Pause 15 ' Debounce
' End speaker tick

' Wait for all keys up
PORTB = 0 ' All output pins low
TRISB = $F0 ' Least significant 4 pins out, top 4 pins in
IF ((PORTB >> 4) != $0F) Then gotkey ' If any keys down, loop
key = (row * 4) + (NCD (col^$0F)) - 1 ' Combine row and column into numeric value


' Translate key to display label:
' 1 2 3 A
' 4 5 6 B
' 7 8 9 C
' * 0 # D
LookUp key,["123A456B789C*0#D"],disp_key


Return ' Return to main loop
End

O.K i'll refer to your first code.

Lets assume that PORTC is set to input... but i'll prefer to set it myself..
TRISC=255 'PORTC as all input

And now this snippet ..

Code:

---


loop:
      if portc.0=0 then
          b0=b0+1
   
          select case b0
   
                case 1
'
'
'
'
goto loop

---

Your select case will never work untill you press all the button down...

To fix it:

Code:

---


loop:
      b0=PORTC 'get the reading of PORTC
   
          select case b0
   
                case 1

---

BUT if i refer to your schematic, we will need to revert the logic or use other CASE.

I mean. If you need to read only PORTC.0 =0 the result comming from your PORTC will be %11111110 or 254 and blah blah blah for all the other option. If you feel safer to read like this
PORTC.0=0 PORTC=1
PORTC.1=0 PORTC=2
PORTC.2=0 PORTC=4
and blah blah blah
what you have to do is to use a simple XOR $ff like this

b0 = PORTC ^ $ff

and now you have the *normal* bit reading from PORTC.

To implement your stuff it will look something like this

Code:

---

loop:
b0 = PORTC ^ $ff
select case b0
    case 1
          gosub menu1
    case 2
          gosub menu2
    case 4
          gosub menu3
    case 8
          gosub menu4
'
'
'
end select
goto loop

---

that's it that's all , basketball ;)

I speak a little english

I made a lcd menu, very good with trhee buttons
MENU,ENTER and BACK
So, now I need A Scroll LCD messague I imagine is with FOR.. NEXT.

This is the code example, it's free. WORK OK 100%

' Definiciones
DEFINE OSC 4 'oscilador de 4 Mhz




' Constante de Tiempos (time)
SYMBOL T1 = 200


' modo LCD de 8 bits
DEFINE LCD_DREG PORTB
DEFINE LCD_DBIT 4
DEFINE LCD_RSREG PORTB
DEFINE LCD_RSBIT 0
DEFINE LCD_EREG PORTB
DEFINE LCD_EBIT 2


' Define program variables

SYMBOL SW1 = PORTC.0 ' Switch 1 "MENU"
SYMBOL SW2 = PORTC.1 ' Switch 2 "DEFILE"
SYMBOL SW3 = PORTC.2 ' Switch 3 "ENTER"





' Variables diversas
MENU VAR BYTE ' Position dans les MENUS
POSI VAR BYTE ' Position sur le LCD


'*** INITIALISATION ************************************************** *****************************
' Initialisation of ports
ADCON1 = 7 ' Set PORTA to digital
low PORTB.1
' Initialisation
PAUSE 300 ' Wait for LCD to initialise
LCDOUT $FE,1 ' Clear LCD




' Inicializacion de variables

MENU = 0

LCDOUT $FE,128," Soft Elio "
'
'************************************************* *************************************************
' cuerpo del programa
'************************************************* *************************************************
MAIN:
IF SW1 = 0 THEN
MENU = 1

GOSUB CONFIGURE

ENDIF
GOTO MAIN
END


'************************************************* *************************************************
' MENU CONFIGURATION
'************************************************* *************************************************
CONFIGURE:
PAUSE T1

'--- Switch MENU-----------------------------------------------------------------------
IF SW1 = 0 THEN

MENU = MENU + 1
GOSUB AFFICHEMENU

SUITECONFIGURE:
SELECT CASE MENU
CASE 6
PAUSE T1
IF SW1 = 0 THEN
MENU = 1
GOTO CONFIGURE
ENDIF
IF SW3 <> 0 THEN SUITECONFIGURE

END SELECT
ENDIF






'--- Switch "ENTER" -----------------------------------------------------------
SWITCH3:
IF SW2 = 0 THEN
LCDOUT $FE,1 ' Clear LCD
SELECT CASE MENU


CASE 2 :GOSUB PROG1:MENU=2

CASE 3 :GOSUB PROG2:MENU=2

'CASE 4 others aplications
'CASE 5


END SELECT
GOSUB AFFICHEMENU
ENDIF


GOTO CONFIGURE

AFFICHEMENU:
LCDOUT $FE,1
SELECT CASE MENU
CASE 2
POSI = 129 : GOSUB MSG6 : GOSUB MSG1
POSI = 193 : GOSUB MSG2

CASE 3
POSI = 129 : GOSUB MSG6 : GOSUB MSG2
POSI = 193 : GOSUB

CASE 4
POSI = 129 : GOSUB MSG6 : GOSUB MSG3
POSI = 193 : GOSUB MSG4

CASE 5
POSI = 129 : GOSUB MSG6 : GOSUB MSG4
POSI = 193 : GOSUB MSG5

CASE 6
POSI = 129 : GOSUB MSG6 : GOSUB MSG5
POSI = 193 : GOSUB MSG1 '
END SELECT
RETURN


PROG1:
lcdout $fe,1, " LED "
lcdout $fe,1, " FLASHER "

pause T1
high porta.0
pause t2
low porta.0
goto PROG1

IF SW3=0 THEN RETURN
GOTO PROG1

PROG2:
INCLUDE "scroll.bas"
IF SW3=0 THEN RETURN
GOTO PROG2


'************************************************* *************************************************
' Lista de mensajes
'************************************************* *************************************************
MSG1: LCDOUT $FE,POSI,"1.Motor DC" : RETURN
MSG2: LCDOUT $FE,POSI,"2.Motor AC" : RETURN
MSG3: LCDOUT $FE,POSI,"3.Lampara" : RETURN
MSG4: LCDOUT $FE,POSI,"4.Temperatura" : RETURN
MSG5: LCDOUT $FE,POSI,"5.Opcional " : RETURN
MSG6: LCDOUT $FE,128,">" : RETURN