GPIO key hold detection

[kensu]

Hi

Does LPC1830 have any special feature for "GPIO key hold" detection?

Normally, we implement the firmware  "Interrupt and timer" or "polling and timer" to detect the "key hold".

Now I use freeRtos with LPC1830, Does any better or easy solutionfor key hold detect?  

Thanks

Ken

[kensu]

Hi Kerry

I understood, 

Very thanks for your reply.

Ken

[kerryzhou]

Hi Ken Su,

    Actually, the GPIO key hold is the basic operation method for all the MCU.

   LPC1830 have no special hardware feature for the key hold. You can use the hardware key dithering or the software key dithering.

  You said you implement the interrupt, timer or polling to detect it, actually, in the freeRtos, the method is still the same for the key hold or key dithering.

Have a great day,
Kerry

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