How to split the GPIO port in multiple sections?

[daniel7]

Posted on November 28, 2007 at 04:48

How to split the GPIO port in multiple sections?

[daniel7]

Posted on November 27, 2007 at 14:59

Hi.

Is there any way to split one of the GPIO ports in multiple sections.

If I e.g. have an 8 bit parallel D/A converter, if think it is a bit strange that I have to use the whole port for only use 8 connections. The best solution would be if I was able to configure which connections that are related and only write to these connections and not to the entire port.

Is there any solution?

[kleshov]

Posted on November 28, 2007 at 04:48

There is a solution. Use bitwise AND/OR operations and bitmasks.

http://en.wikipedia.org/wiki/Mask_(computing)