Joachim Franek wrote: > Hello. > > Where is the information about the pin > multiplexing? > > It is all described in the 1700 (!!) page manual on the chip, which is linked to from the beagle Board site. But, it is a poorly indexed manual, and will drive you nuts. Also, you have to work around random GPIO pads on the ports that are used for important system functions. If you alter the settings for one of those pads, the beagle crashes.
Here is a short TCP server program that initializes a bunch of pins of GPIO 5 as needed, then binds a TCP service to port 2020, and when it gets a packet, it does some I/O to the GPIO pins to control an attached device. Perhaps the way it configures and accesses the GPIO from user space may be helpful. This program is owned by root and has the s privilege bit set with chmod so it can access the I/O space. http://pico-systems.com/codes/server.c Jon ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. ON SALE this month only -- learn more at: http://p.sf.net/sfu/learnmore_123012 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
