Re: [RDD] GPIO Permissions
I wrote this for Debian 6 as a source install a few years ago but it still applies: http://rivendell.tryphon.org/wiki/Debian_6_GPIO_MC_PCIDIO24 On 2015-10-14 18:51, Cowboy wrote: On Wednesday 14 October 2015 01:33:42 pm Michael Barnes wrote: I check /dev/gpio0 and find the permissions only for root. By "only for root" I suspect you mean owner only, and it's owned by root ? Or do you mean owner and group root ? I suspect a udev rule, or something along those lines. ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] GPIO Permissions
A chown command in the rc.local file worked. Thanks for your help. Michael On Wed, Oct 14, 2015 at 12:41 PM, Brian P. McGlynn wrote: > Michael, > > Put a command in /etc/rc.local that chown's and it will work each time on > reboot. > > Brian > > -- > Brian P. McGlynn > Sent from my iPhone > > > On Oct 14, 2015, at 13:33, Michael Barnes wrote: > > > > Setting up a new Rivendell box that has a Measurement Computing PCI > DIO-24 card installed. When I fire it up, I find that it doesn't read > contact closures. Using gpitest I get a popup box that says "Can't open > GPIO device." I check /dev/gpio0 and find the permissions only for root. I > chmod it to 777 and everything works fine. However, on rebooting the > machine, the permissions reset and the relay contacts don't work again. > > > > How do I permanently change the permissions so they stay in place after > a reboot? > > > > This is a CentOS 6 Appliance install. > > > > Thanks for your ideas. > > > > Michael > > > > ___ > > Rivendell-dev mailing list > > Rivendell-dev@lists.rivendellaudio.org > > http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev > ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] GPIO Permissions
On Wednesday 14 October 2015 01:33:42 pm Michael Barnes wrote: > I check /dev/gpio0 and find the permissions only for root. By "only for root" I suspect you mean owner only, and it's owned by root ? Or do you mean owner and group root ? I suspect a udev rule, or something along those lines. -- Cowboy ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] GPIO Permissions
Michael, Put a command in /etc/rc.local that chown's and it will work each time on reboot. Brian -- Brian P. McGlynn Sent from my iPhone > On Oct 14, 2015, at 13:33, Michael Barnes wrote: > > Setting up a new Rivendell box that has a Measurement Computing PCI DIO-24 > card installed. When I fire it up, I find that it doesn't read contact > closures. Using gpitest I get a popup box that says "Can't open GPIO > device." I check /dev/gpio0 and find the permissions only for root. I chmod > it to 777 and everything works fine. However, on rebooting the machine, the > permissions reset and the relay contacts don't work again. > > How do I permanently change the permissions so they stay in place after a > reboot? > > This is a CentOS 6 Appliance install. > > Thanks for your ideas. > > Michael > > ___ > Rivendell-dev mailing list > Rivendell-dev@lists.rivendellaudio.org > http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
[RDD] GPIO Permissions
Setting up a new Rivendell box that has a Measurement Computing PCI DIO-24 card installed. When I fire it up, I find that it doesn't read contact closures. Using gpitest I get a popup box that says "Can't open GPIO device." I check /dev/gpio0 and find the permissions only for root. I chmod it to 777 and everything works fine. However, on rebooting the machine, the permissions reset and the relay contacts don't work again. How do I permanently change the permissions so they stay in place after a reboot? This is a CentOS 6 Appliance install. Thanks for your ideas. Michael ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
