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| Search found 4 matches |
| Author | Message |
|---|---|
 Topic: Problem with 4x4 Keypad Scan (Without Pull-up) |
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| fms Replies: 20 Views: 23423 |
 Forum: General CCS C Discussion Posted: Wed Apr 02, 2008 11:11 am Subject: Problem with 4x4 Keypad Scan (Without Pull-up) |
| Really glad it did helped someone out. Worth all the debugging effort. Thanks CCS Forum and PCM programmer for the pull up version. | |
| Topic: Problem with 4x4 Keypad Scan (Without Pull-up) |
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| fms Replies: 20 Views: 23423 |
Forum: General CCS C Discussion Posted: Thu Feb 14, 2008 12:12 pm Subject: 4x4 Keypad Scan (Without Pull-up) (SOLVED) |
| Dear ALL,
I've retested and reconfirmed that my code is just fine and working perfectly. The problem is with the floating of my row input pins. Pull them low and everything works beautifully. Hope t ... |
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| Topic: Problem with 4x4 Keypad Scan (Without Pull-up) |
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| fms Replies: 20 Views: 23423 |
Forum: General CCS C Discussion Posted: Wed Feb 13, 2008 7:11 am Subject: Problem with 4x4 Keypad Scan (Without Pull-up) |
| Row scanning like this, should work fine with CCS. I do it on several keyboards OK.
Dear Ttelmah, Thanks for the explanation. mind if u share us your codes? This would help me alot. |
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| Topic: Problem with 4x4 Keypad Scan (Without Pull-up) |
|
| fms Replies: 20 Views: 23423 |
Forum: General CCS C Discussion Posted: Wed Feb 13, 2008 2:14 am Subject: Problem with 4x4 Keypad Scan (Without Pull-up) |
| This would result changes in the hardware design. There are many design which uses this concept (without pullup). but why it wouldn't work using PIC C? | |
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