LPC Microcontrollers中的主题 GPIO key hold detection

GPIO key hold detection

kensu — Tue, 18 Apr 2017 01:55:55 GMT

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

Re: GPIO key hold detection

kerryzhou — Thu, 20 Apr 2017 07:33:44 GMT

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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Re: GPIO key hold detection

kensu — Fri, 21 Apr 2017 00:38:54 GMT

Hi Kerry

I understood,

Very thanks for your reply.

Ken