Scott’s GPIO page is the best I’ve come across for gumstix: http://www.jumpnowtek.com/index.php?option=com_content&view=article&id=54&Itemid=60
You can also see some of this stuff in the wiki: http://wiki.gumstix.org/index.php?title=GPIO
RE your shell stuff – the logic level of the pins is only 1.8V, keep that in mind when making measurements. I can toggle the level of gpio_10 using the first three commands you posted without any trouble. That’s using kernel 2.6.36-r100 with u-boot 2010.09.
I am a graduate student working on a project with the Gumstix Overo Fire and Tobi Expansion Board. This is my first time working on a Linux embedded computing project ever so help would be much appreciated.
My task is to create a python code for a GPIO (I was planning on GPIO10). This code will turn the pin high to have a voltage output and then turn the pin low.
I was doing some testing in the command line with the following prompts:
Measured with an oscilloscope using PIN 15 as GND
Measured with an oscilloscope
I saw no change when measuring both times.
I have been reading multiple forums and all of them seem confusing and complicated. All I want to do is turn the pin high.
For the python code I figured I would be doing something according to these steps to make the pin high:
write a 1 to the value
Thanks in advance