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PSoC 4 MCU

Anonymous
Not applicable

Hello All,

   

I have been working on getting a hardware solution to single click, double click, and long press detection operational. My thought process was to do the following:

   

Switch (resistive pull up) -> Timer -> ISR (Please see attached image. There appears to be no way for me to show it in the editor). 

   

In this way, a double click would be fired off if there were two clicks before the timer period expired. A single click would be when there is no double click. I figured there might already be an FPGA circuit or similar solution to this problem. Does anyone have any input?

   

P.S. I considered doing a software solution, but I thought it would be better for the CPU to only have to respond to ISRs, keeping it in sleep mode longer.

   

Thanks!

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Esteemed Contributor II

You need two (different) time-windows: one to distinguish between a double-click from two clicks and another one to distinguish a long press from a click. Doing that in software is the easiest way, look at this example for a PSoC5: http://www.cypress.com/?app=forum&id=2492&rID=68603

   

Bob

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