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4x4 keypad with pic16f877

 
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cwilson



Joined: 24 Oct 2016
Posts: 1

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4x4 keypad with pic16f877
PostPosted: Mon Oct 24, 2016 6:45 pm     Reply with quote
Hi I'm a year 1 student in Fiji and working on a project using a 4x4 keypad. My problem is that the ccs pic c compiler only has a driver for a 4x3 keypad and not a 4x4. Please help.
ezflyr



Joined: 25 Oct 2010
Posts: 1019
Location: Tewksbury, MA

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PostPosted: Mon Oct 24, 2016 7:06 pm     Reply with quote
Hi,

Hmmm, how hard did you look??? Rolling Eyes

There are numerous examples of 4x4 keypad drivers available on the forum. Here is one by PCM programmer: http://www.ccsinfo.com/forum/viewtopic.php?t=28022&start=14

John
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John

If it's worth doing, it's worth doing in real hardware!

Last edited by ezflyr on Mon Oct 24, 2016 7:30 pm; edited 1 time in total
temtronic



Joined: 01 Jul 2010
Posts: 9171
Location: Greensville,Ontario

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PostPosted: Mon Oct 24, 2016 7:09 pm     Reply with quote
You need to look at and understand how CCS coded the 4 by 3 driver, then decide how to add one column or row.
If we just give you the code, then you've not learned anything.


Jay
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