I have a Raspberry Pi running the latest version of Raspbian with a PiFace connected to it. I can run the PiFace emulator and Python scripts against the PiFace just fine. Everything from a command prompt works. This is great, but my goal is to be able to remotely control the PiFace from a web page. I followed the directions in the PiFace Google Docs documentation page here:
https://drive.google.com/folderview?id=0B-UAZ9CyJCLGQjJ3RDlqa2pqaDg#
After some troubleshooting and tweaking later (there's one extra httpi directory deep) I can access the initial web page, but the web based interface keeps throwing up this error:
Error: can't open device: /dev/spidev0.0
It appears to be a permission issue, but I've tried everything I can think of to no avail. I've spent the past two weeks on this problem and it's really frustrating. My original goal was to automate my garage door. I've got all the hardware working, it's just a problem of this web interface. I just need a working web interface so I can see how this is all supposed to work so I can tweak it to my needs. Sadly I'm not smart enough to build this from scratch. Can anyone point me in the right direction to fix this error? Is there a better way to make a web interface connection to the PiFace so I can run my garage door? Any help would be appreciated.
