So, I\'m in a bit over my head, and I feel like I\'m very close to a solution, but it\'s just not working quite yet. Here\'s my situation:
I\'m working with an Ardui
There's also Apple's SerialPortSample command line tool that allows you to set arbitrary baud rates:
// from: SerialPortSample/SerialPortSample.c
// ...
// Starting with Tiger, the IOSSIOSPEED ioctl can be used to set arbitrary baud rates
// other than those specified by POSIX. The driver for the underlying serial hardware
// ultimately determines which baud rates can be used. This ioctl sets both the input
// and output speed.
// ...
For more information see: http://www.arduino.cc/playground/Interfacing/Cocoa
Another piece of Cocoa sample code that shows you how to talk to the Arduino microcontroller over a serial connection is objective-candarduino (hosted on Google code).