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I'm using Raspberry pi 2, in that there are: one GPIO_GCLK pin, seven GPIO_GEN pins

I don't no for what purpose these pins are used for, do they have any special purpose? can anyone explain it in detail?

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  • Have you even attempted to google your question?
    – Jacobm001
    Dec 7 '15 at 8:16
  • @Jacobm001 This is the first result on google when I searched for the same question.
    – ubomb
    Apr 21 '17 at 17:06
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GPIO_GCLK is the GPIO General Purpose Clock (GPCLK in the datasheet linked). You can set it to generate a square wave up to 125 MHz at 1.2 V, according to the BCM2835 ARM Peripherals datasheet page 103 and page 106.

GEN pins are just regular GPIO pins from the user's perspective. Nothing special.

Useful link: http://elinux.org/RPi_BCM2835_GPIOs

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