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

[João de Brito Rocha Reis Vidigal]

Charles:

> 
> Hi list,
> 
> I could make use of gpio (as output) within pd with just [textfile] :
> 
> on the command-line:
> 
> echo gpio17 > /sys/class/gpio/export
> echo out > /sys/class/gpio/gpio17/direction
> chown charles /sys/class/gpio/gpio17/value
> 
> inside pd:
> 
> [ set 1 (  [ write /sys/class/gpio/gpio17/value cr (
> |
> [ textfile ]
> 
> works.

could I do the reverse here? I mean, use it as an input rather than an output?
would it be something like:

echo gpio17 > /sys/class/gpio/import
echo in > /sys/class/gpio/gpio17/direction
chown charles /sys/class/gpio/gpio17/value

inside pd:

[ set 1 (  [ read /sys/class/gpio/gpio17/value cr (
|
[ textfile ]


tks