Working with vMicro on AS7.  I thought I had this working yesterday but poorly.   Anyway.   I have a basis blinky program with a counter for test purposes.  Right now I am trying to verify seial debug will work.  The program seems to upload to the Arduino Due but doesn't hit breakpoints nor does it provide  output to the output screen or to the expression screen. 

I looked for a log file but didn't find one. Does AS7 uses a different down loader??

Screen shots and compile output attached.

I used vMicro->Explorer to import an arduino example blink project for debug trial purposes. It does not use the serial port nor is there any way  or any reason to to set the DTR.

I am attempting to get vMicro serial debug working with Atmel Studio 7.

Ok.  I understand.  The Screen serial screen pops up.. Says
Opening Port
Port open

The Expression screen comes up with some instruction but nothing changes.

Never get the message Debug Started.   
The break point is set on a'digitalWrite' with a condition of hit count >=1 and an option to break and print counter value, eg $FUNCTON n = {n}
Here's the code 
void loop() {
     n++;
  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1500);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);                       // wait for a second
}

break point is on the second digitalWrite

The 'output' screen (not the serial screen) says Launching Debugger  followed by some informational lines but nothing  else shows up.

Follow up.   

The instructions I found for using AS7 was to create a .cpp file with the same name as the .ino file.  It also indicated it would create a main.cpp.  But perhaps that was all for hardware debugging. If so, We'll get to that later.

AS7 instruction page has been updated. Sorry for the time waste.

You don't need the project_name.cpp. The serial debugger needs an .ino with setup() and loop() as normal for arduino. This is because it has to inject the serial debug commands and any watch expressions into the code. The setup() is used to kick things off and .begin() the Serial.

Great, it's all useful feedback thanks.