So I created a nice serial/UART program and it runs very well through "mobileterminal".

I tried running the same code using a GUI hello world example, however it doesn't output anything to my connected UART device so I'm assumming it doesn't run or there is permission issue opening the serial port via the commmand...

Code:

open("/dev/tty.iap", O_RDWR | O_NOCTTY | O_NONBLOCK);

My goal is to get UART data to and from a GUI.

I'm about to tear apart the "mobileterminal" app source code to see what I can do. I'm just wondering if it has been done?

Well I've had no luck tearing apart the "mobileterminal" app. Objective-C is getting extremely frustrating at this point. I can't even follow where functions are being called from.... Anyways, mobileterminal includes a SubSystem process in order to run terminal apps. The question is, whats the easiest way to get a terminal app's IO to a GUI application? The function execve() used in mobileterminal isn't working.

Considering the above question is merely a hack to get certain code to run, the real question is what needs to be set up before I can open "/dev/tty.iap" with file pointer and not get permissions issues within a GUI app?