Questions about GPIO
#11
(02-16-2016, 03:15 PM)limitlesscodes Wrote: Alright, so I kind of figured out pin assignment using the GPIO image on the wiki. I still would like to know what PC, PD, PH, etc. means and when to use them vs. others. Also I would like to know if there is any better way of exporting the pins through C rather than doing something like:
Code:
//near beginning of file
system("echo 71 > /sys/class/gpio/export")
and
Code:
//near end of file
system("echo 71 > /sys/class/gpio/unexport")

You can fopen the file and write the string "71" to it like your first post.  That's essentially what the echo is doing.


Messages In This Thread
GPIO ports - by igna09 - 12-31-2015, 04:31 AM
RE: GPIO ports - by o9guy - 12-31-2015, 10:28 AM
RE: GPIO ports - by limitlesscodes - 02-07-2016, 01:56 PM
RE: GPIO ports - by tllim - 02-07-2016, 08:25 PM
RE: GPIO ports - by limitlesscodes - 02-10-2016, 12:25 AM
RE: GPIO ports - by tllim - 02-10-2016, 06:53 PM
Questions about GPIO - by limitlesscodes - 02-14-2016, 05:49 PM
RE: Questions about GPIO - by patrickhwood - 02-14-2016, 07:12 PM
RE: Questions about GPIO - by limitlesscodes - 02-15-2016, 06:05 PM
RE: Questions about GPIO - by limitlesscodes - 02-16-2016, 03:15 PM
RE: Questions about GPIO - by patrickhwood - 02-16-2016, 11:45 PM
RE: Questions about GPIO - by limitlesscodes - 02-17-2016, 03:51 PM

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