Getting the VC21RB1 working with the VC I2C example was a nice step to make. I can now get back to looking at the VC21MM1.
With the COGLinux kernel in the VCMX212 flash ROM, a few people have been asking on the VC google group whether anyone has ported some form of Linux framebuffer based GUIs across. Some suggestiongs have been Qt, Tiny-X, DirectFB. It's taken me a few weeks to check out the various window managers. Finally liking the look of Qt for Embedded Linux.
One deciding factor was a group post about someone that had ported this to another i.MX21 based device called the Chumby, blog link. I've spent the last week going through this, the Qt web site, and getting it all setup in Cygwin (and lately Ubuntu).
I've managed to get the tslib to work on the VCMX212/VC21MM1 :) But the Qt Embedded install has been quite challenging. It took me a while to determine why a cross platform compile of Qt wasn't working under Cygwin. The configure script uses uname to sort out certain paths through the configure scripts, and breaks the cross platform compile!! :( With Wubi installing Ubutu on the development laptop I'm now looking at cross compiling via that and Cygwin.
With the limited time I can spend on home-brew development, this could take (probably) a couple of months to sort out. But so far it's coming along nicely.. Watch this space for updates :) Eventually I'll start filling out the Wiki over on my Google Code page that accompanies this blog with the steps required to get Qt working on the VC21MM1.