Arduino on Xcode Project — Official Thread

New releases add Wiring and LaunchPad support.

embedXcode • Apr 05, 2012 release 7 • Wiring and LaunchPad platforms added
mpideXcode • Apr 05, 2012 release 10 • Wiring and LaunchPad platforms added

Code is here and documentation there.

Both build and upload have been successfully tested on Wiring S and LaunchPad msp430g2452 boards.

Energia is the Processing-based IDE for the LaunchPad platform.