Freerunner GPIO locations

Robin Paulson robin.paulson at gmail.com
Tue Feb 18 12:35:05 CET 2014


On 18 February 2014 15:22, Paul Wise <pabs3 at bonedaddy.net> wrote:
>> any schematics out there with their location? ideally something which
>> relates them to the nodes in /sys/class/gpio/
>
> These are the schematics I can find related to this:
>
> http://downloads.openmoko.org/developer/schematics/GTA02/Schematics_Freerunner-GTA02_A5-A7cumulative_public_RC0.pdf
> http://svn.openmoko.org/trunk/doc/hardware/GTA02v4/gpio.txt


hi,
yes, thanks for those, i have seen them already. they help, but don't
enable me to relate the nodes in /sys/class/gpio/ to anything on the
board. the specific files in that directory are:

gpiochip0
gpiochip160
gpiochip224
gpiochip416
gpiochip480
gpiochip96
gpio164
gpiochip128
gpiochip192
gpiochip32
gpiochip448
gpiochip64

how do those files relate/connect to the components and solder pads
listed on the schematics? which point on the board would i solder to
if i wanted to control, say, the gpio named "gpio164", or "gpiochip0"?

cheers,

-- 
robin

What the world needs now is love sweet love



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