[PD] gpio on the raspberry pi from within pd ?

[Julian Brooks]

For whatever reason on my install (and this is based upon the one Miller
shared at the CrashSpace RPi session in February 2013)
sudo bash
echo gpio17 > /sys/class/gpio/export
wont work.
But
sudo echo "17" > /sys/class/gpio/export
Does

Will test some more with the [gpio] object later - out of time now:(

Cheers Charles,

Julian




On 2 April 2013 12:22, Charles Goyard <cg at fsck.fr> wrote:

> Hi,
>
> Julian Brooks wrote:
> > After sudo bash I get:
> > root at raspberrypi:/home/pi# echo gpio17 > /sys/class/gpio/export
> > bash: echo: write error: Invalid argument
>
> That's strange. I don't have a pi handy for now to double check my
> instructions. Maybe I forgot something.
>
> > I'm presuming 'gpio17' is to allow access to pin 17 and not what was my
> > first impression that gpio17 allows access to all 18 pins?
>
> yes, only creates the gpio17 "file" for pin 17.
>
>
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