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keypad help

 
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sohailkhanonline



Joined: 06 Mar 2008
Posts: 35
Location: pakistan

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keypad help
PostPosted: Tue May 20, 2008 11:55 pm     Reply with quote
hi
i am using kbd.c for a 3X4 keypad. And it is working when i pull up the row pins. But i can only pull up column pins. So what modification in kbd.c I need to get it working with pulled up column pins.

As i think you have access to CCS drivers so i am not posting kbd.c file
however my main file is a test program

Code:
#include <18F4620.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=20000000)
#include <kbd.c>
#include <flex_lcd.c>

void main()
{
   char k;
   lcd_init();
   kbd_init();

   printf(lcd_putc,"\fReady...\n");

   while (TRUE)
   {
      k=kbd_getc();
      if(k!=0)
      {
      if(k=='*')
      printf(lcd_putc,"\f");
      else
      printf(lcd_putc,"%c",k);
      } 
   }
}

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sohail khan
filjoa



Joined: 04 May 2008
Posts: 260

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PostPosted: Wed May 21, 2008 12:24 pm     Reply with quote
Hi

see this post http://www.ccsinfo.com/forum/viewtopic.php?p=96191&sid=5d505e34fee013e60b95cbb211aae27c

it explain better... if you have mores questions, post..

regards
sohailkhanonline



Joined: 06 Mar 2008
Posts: 35
Location: pakistan

View user's profile Send private message Visit poster's website Yahoo Messenger MSN Messenger

PostPosted: Wed May 21, 2008 10:49 pm     Reply with quote
Hi i have read post of all the related links
but couldnt find the solution.
Someone says that place pull ups on row pins. Some say on column pins but i need code for pull down column pins
my keypad connections are
0 Row0 Port D0
1 Row1 Port D1
2 Row2 Port D2
3 Row3 Port D3
4 col0 Port D4
5 col1 Port D5
6 col2 Port D6
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sohail khan
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