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PogoPlug E02 GPIO

Posted by sl33nyc 
PogoPlug E02 GPIO
January 28, 2016 02:44PM
I managed to install OpenWRT onto it (and playing with the orange and green LEDs!), I started wondering if there are other GPIO pins. A quick:

root@OpenWrt:/sys/class/gpio# cat gpiochip0/ngpio
32
root@OpenWrt:/sys/class/gpio# cat gpiochip32/ngpio
18

suggests there are more available, but since I have virtually no experience hardware spelunking for undocumented GPIO pins, I figured I should at least start by finding someone who might’ve done so.

Has anybody identified additional GPIO pins on PogoPlug E02 board?
Re: PogoPlug E02 GPIO
January 31, 2016 06:39AM
as i understand it - they are there, but hidden underneath the kirkwood processor - so inaccessible.

Someone please correct me if i am wrong


for accessible gpio - you are better served looking at the v4 - these sit in SD card slot
Re: PogoPlug E02 GPIO
January 31, 2016 11:09AM
There are quite a few GPIOs that are accessible in this Pogo E02, besides the LED GPIOs. Look in the DTS source (see the patch in kernel/rootfs thread).

See here for an example about how to access them in Linux
http://forum.doozan.com/read.php?3,23008,23017#msg-23017

Warning to beginners: be careful, you have to know exactly what the effect of writing to a GPIO pin before trying.

-bodhi
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Re: PogoPlug E02 GPIO
January 31, 2016 11:57AM
@bodhi

I think the OP was looking for the physical location of the GPIOs. Do you have any documentation or images anywhere that shows them? or am i correct in my earlier statement that like the dockstar they are not physically available??
Re: PogoPlug E02 GPIO
January 31, 2016 01:23PM
Yes, I was looking for the physical location of the GPIOs. I'm looking to break out GPIOs, so I can turn the Pogo E02 into something closer to a Raspberry Pi. Documentation or images would be awesome.

I found the manual for the SoC and know the SoC has a ton of functionality, but I was hoping some of the GPIO pins (MPP?) were easily accessible like the Pogo V4.
Re: PogoPlug E02 GPIO
January 31, 2016 02:20PM
Ah, sorry I've misread the question! in that case, no, I'm not aware of anybody has successful identified/located them physically on the Pogo E02.

-bodhi
===========================
Wiki
latest Kirkwood kernel builds and rootfs
latest u-boot-kirkwood builds
latest Oxnas kernel builds and rootfs
latest u-boot-oxnas builds
latest MVEBU Armada kernel builds and rootfs
U-Boot & Kernel Booting process
bodhi's u-boot GitHub
bodhi's corner
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