I want to use Atmel Icee with Atmel Studio 7 and debug an existing arduino application.   I did not seen any way to open an existing .ino file and create an arduino project.  Please let me know what I miss.   

So....I went to the doc 'visualmicro.com/page/Arduino-for-Atmel-Studio-7.aspx' and tried to follow that.

The test file is a simple blink example with a counter added.

Step 1:  Create a new arduino project named Blink.

Step 2:  Rename the arduino example 'blink.ino' to 'blink.cpp' and copy it to the folder created in step 1.

Step 3:  Set up the project for hardware debugging.  Screen shots attached.

Step 4:   Remove the contents of blink.ino created above but retain the file.

When I select Debug->Start Debugging and Break, the program compiles properly but does not load to the DUE target.

Note that vMicro->Atmel Studio Debugging is not enabled.

When I check vMicro->Atmel Studio Debugging I get the same behavior, but I think this is normal.   I can go to Tools->Device Programming and upload the file using Atmel Ice.  After uploading, I can use Debug->Attach to Process and the debugger will break into the code at an assembler location.  Unfortunately, all of the start  up code is missed and I cannot restart the program (read I don't know how).

Suggestions??

That simple -- Works. Thanks.