Does the iPhone SDK allow hardware access to the dock connector?

Question

I haven't been able to find any documentation on hardware access via the iPhone SDK so far. I'd like to be able to send signals via the dock connector to an external hardware device but haven't seen any evidence that this is accessible via the SDK (not interested in possibilities on jailbroken iPhones).

Anyone have any pointers to docs for this or some idea of what deep dark corner i should look?

Answer 1

It will with the new SDK (3.0):

iPhone OS Accessories

Using iPhone SDK 3.0 your application can communicate with accessories attached to iPhone or iPod touch through either the 30-pin dock connector or wirelessly using Bluetooth.

Answer 2

Available in iPhone SDK 3.0 as External Accessory framework

http://developer.apple.com/iphone/program/sdk.html