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Keypad Driver

 
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Ahmed



Joined: 07 Mar 2006
Posts: 19

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Keypad Driver
PostPosted: Sun Mar 12, 2006 4:24 pm     Reply with quote
I'm trying to use 4x3 matrix keypad with PIC16f877. the pins were connected to different ports which made me unable to use CCS KBD driver.

Do anybody knows modified driver?

Thanks for your Cooperation.
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Sun Mar 12, 2006 4:31 pm     Reply with quote
Post the list of connections between the keypad and the PIC.
Ahmed



Joined: 07 Mar 2006
Posts: 19

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Connections
PostPosted: Sun Mar 12, 2006 4:42 pm     Reply with quote
PCM programmer wrote:
Post the list of connections between the keypad and the PIC.


Connections is as follow:

X3 ------ PIN A5
X2 ------ PIN E0
X1 ------ PIN E1
Y4 ------ PIN E2
Y3 ------ PIN C0
Y2 ------ PIN C1
Y1 ------ PIN C2

Four pull up resistors were connected to the (Y4 - Y1).
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Sun Mar 12, 2006 10:21 pm     Reply with quote
I don't have a flexible driver for the keypad. I could do one, but I'm
very busy at work for the next few days.
Ahmed



Joined: 07 Mar 2006
Posts: 19

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PostPosted: Mon Mar 13, 2006 3:54 pm     Reply with quote
PCM programmer wrote:
I don't have a flexible driver for the keypad. I could do one, but I'm
very busy at work for the next few days.


Thanks alot PCM, i modified it and put it on the library for anybody may need it in the future.

http://www.ccsinfo.com/forum/viewtopic.php?t=26333
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