I have been using this tool for a couple of weeks now with fairly good results however today I have run into something I have not seen yet.

When I attempt to us VS, compile my program and download to the target all is well UNTIL sometime during the download process. I get the following message:

Uploading to I/O board using 'COM3'. I can observer the TX / RX led's indicating activity to / from the target

Usually I will get a message indicating that the process is complete. Following this point in time the VS application is hung, unresponsive and requires a stop via kill or 'X' (dialog button).

A power cycle / reset to the target results in non-operation so I suspect the download process failed. (validated via the Arduino standard Serial Monitor tool)

It I attempt to reproduce the issue without unplugging and reinserting the Arduino target I receive a message indicating that the COM3 port is in use. (I suspect a problem in the program download process)

If I remove / re-insert the USB plug and attempt to use the 'normal' Arduino tool chain the application runs properly and the target performs as expected.

If I configure VS to disable the debug the download is successful and I can use the Serial Monitor to verify the proper operation of the program. (obviously without debug support! )

Setting VS back to debug results in the same hang.

I have attempted to reproduce this issue with another very simple sketch and all works fine.

Any ideas? I have grown accustomed to the debugger; would like to use it!

Don

The serial monitor is not displayed during the attempted download; not sure how it could be though, in my experience it is closed by VM prior to the download process.

The RemovePort and LocalPort variables are '' (empty)

Zip file being sent.

Thanks for the support!

Don

Not sure if company will allow me to send complete sketch (I don't see why but I will have to ask for permission).

Interesting note RE the USB though; I started having this issue after I inserted a 'different' Arduino board (One that I have not used before). When I inserted the new board the OS assigned a different COM  port to the USB. I wonder if this is causing some issues?

As far as the serial window goes; I do not 'see' the serial monitor and the Window->Windows menu option does not indicate a serial monitor. 

Clicking on Tools -> Arduino -> Serial Monitor however will bring up the serial monitor.

If I attempt to download with the Serial Monitor displayed I get:

Port open
Port closed
Uploading to I/O Board

And nothing else.

However VS does not die if Serial Monitor is displayed.

If I close the Serial Monitor and attempt to load again (without a restart) I get the 'Access to the port 'COM3' is denied so I suspect the process is still 'stuck'.

Keep in mind I have a very simple sketch that still works ok.....

BTW; I have searched the Arduino forum and it is a reported problem that the libraries (sprintf) do not currently support floating point.. Just in case someone else on this forum was curious.

Hmmm

Don

Driver:

'Arduino Mega 2560 (COM3)'

Driver date: 11/15/2007
Driver Version 5.1.2600.0


Is this the latest USB driver? If not where can I get the latest.

Startup Delay (ms)  0
Startup Delay or Dtr false

Sorry for the delay; I have been on travel this week.

Yes, my sketch does use the serial  port (for diagnostic output, written before I started using your tool)

I switched the break/pause to FALSE and things now seem to work (of course I cannot break; but that may not be a big problem)

The compiled size of the sketch is:

Binary sketch size: 20686 bytes (of a 258048 byte maximum) (2.6520047 secs)

Thanks,

Don