8x8 keypad matrix...

[Archangel]

Thanks for the quick responce, I'm using pic16f877, the same PIC I use for my 4x4 keypad. If possible I want to make use the keypad.bas include file work for the 8x8. I did not make any changes to the keypad.bas but instead I include this in my code...

DEFINE KEYPAD_ROW        8       ' 8 row 
    define KEYPAD_ROW_PORT   PORTB   '   on PORTB
    DEFINE KEYPAD_ROW_BIT    0       '      
    DEFINE KEYPAD_COL        8       ' 8 col 
    DEFINE KEYPAD_COL_PORT   PORTD   '   on PORTD
    DEFINE KEYPAD_COL_BIT    0

I also want to make clear, is the DEFINE KEYPAD_ROW_BIT and DEFINE KEYPAD_COL_BIT is where you suppose to connect your first row and column?

regards,
mbox

Hi,
I see mister_e has commented the DEFINES in keypad.bas you should scroll down and see this in amongst the assembly code:

<font color=green>
  ;
    ;    Default settings
    ;    ================
    KB_ROW        = 4                                      ; 4 ROW keypad
    KB_ROW_PORT   = PORTB                                  ; Keypad ROW on PORTB
    KB_ROW_BIT    = 0                                      ; ROW0 = PORTB.0
    KB_COL        = 4                                      ; 4 COL keypad
    KB_COL_PORT   = PORTB                                  ; Keypad Col on PORTB
    KB_COL_BIT    = 4                                      ; COL0 = PORTB.4
    DebounceDelay = d'200'                                 ; debounce delay 200mSec
</font color>

I do not know if the defines will override this or not, somehow I doubt it, but it very well may.
Also here are some threads on this subject:
http://www.picbasic.co.uk/forum/show...ght=keypad.bas
http://www.picbasic.co.uk/forum/showthread.php?t=3250