Hi list, hi J,
I am better understand the GPIOs on a Raspberry Pi 2 model B using Miller's gpio external from pi-externs. Everything works fine so far, only in the help patch kindly provided by J Oliver in his posting http://lists.puredata.info/pipermail/pd-list/2013-04/102172.html the message "enable 17" is said to do the same as an echo "17" > /sys/class/gpio/export on the shell, but is has no effect, no file /sys/class/gpio/gpio17 is created.
If I create in on the console all is fine.
Does anyone else experience this?
Thanks, Peter
Are you running pd with sudo privileges? On Aug 28, 2015 2:25 PM, "Peter P." peterparker@fastmail.com wrote:
Hi list, hi J,
I am better understand the GPIOs on a Raspberry Pi 2 model B using Miller's gpio external from pi-externs. Everything works fine so far, only in the help patch kindly provided by J Oliver in his posting http://lists.puredata.info/pipermail/pd-list/2013-04/102172.html the message "enable 17" is said to do the same as an echo "17" > /sys/class/gpio/export on the shell, but is has no effect, no file /sys/class/gpio/gpio17 is created.
If I create in on the console all is fine.
Does anyone else experience this?
Thanks, Peter
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- Ivica Bukvic ico@vt.edu [2015-08-28 14:52]:
Are you running pd with sudo privileges?
The user is part of the gpio group which has the correct permissions to execute echo "2" > /sys/class/gpio/export successfully. But you are right, strangely Pd only started as root can execute the "enable 2" message in the patch. Weird.
Thanks Ivo, P
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Ivica Bukvic -
Peter P.