Comments on: Basic IO: Button Debounce http://www.engscope.com Engineering, Kayaking, Guitar and More Wed, 01 Sep 2010 00:29:56 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: jliu83 http://www.engscope.com/pic-example-codes/basic-io-button-debounce/comment-page-1/#comment-4151 jliu83 Thu, 03 Sep 2009 11:40:19 +0000 http://www.engscope.com/?page_id=244#comment-4151 Would work however, interrupts, especially external interrupts are hot commodities. You would want to reserve them for input captures of digital signals, not waste them on buttons. The lower model PICs has 3 external interrupts, and some only have 1 I believe. The software oversampling filter really is the most elegant solution because you can use any old input pin and save your interrupt resources. -J Would work however, interrupts, especially external interrupts are hot commodities. You would want to reserve them for input captures of digital signals, not waste them on buttons. The lower model PICs has 3 external interrupts, and some only have 1 I believe. The software oversampling filter really is the most elegant solution because you can use any old input pin and save your interrupt resources.

-J

]]> By: MooCow http://www.engscope.com/pic-example-codes/basic-io-button-debounce/comment-page-1/#comment-4137 MooCow Wed, 02 Sep 2009 19:57:07 +0000 http://www.engscope.com/?page_id=244#comment-4137 Another idea would be to hook an interrupt on the input. When the button is pushed, the interrupt is called and the routine does its work. But it also flags that input as disabled for the next 20ms and sets itself to be recalled after 20ms to reset everything to be ready for another button press. Makes sense? Another idea would be to hook an interrupt on the input. When the button is pushed, the interrupt is called and the routine does its work. But it also flags that input as disabled for the next 20ms and sets itself to be recalled after 20ms to reset everything to be ready for another button press.

Makes sense?

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