upload hangs with code with certain Serial.print statement

Projects Programming
1

:astonished:I have a sketch that worked perfect until I added a line in the code that read

Serial.print("    Cliff!!!!!    ");

With that line in the code included in the3 sketch the IDE hangs everytime when uploading. I am uploading to a mega 2560 r3 and have no trouble with any other uploads. I took the entire print statement out of the code and it worked fine. I put it back in and changed it to

Serial.print("Cliff!");

and it works fine. There is something about the multiple spaces or multiple exclamation points that causes a problem. Anyone have any thoughts on this? It isn't critical, I changed the text in the print statment and it is fine. I would like to know what is causing this so I don't do it again in the future.

Thanks,

Jim, K6JMG

3

The !!! throws the Mega bootloader into its debugging mode, unfortunately.

4

will cause the same issue.

No, it won't. That code will generator a compiler error, which is completely different from uploading, which happens far later in the build process, doing unexpected, but known, things.

5

Thanks, Folks. Bug, feature, don't really care. It sounds like it is a known event so I just need to remember to not do it again. I didn't need the exclamation points, I was just doing it for emphasis.

I also apologize for posting this if there was another thread about the issue. I did some searching around but, obviously, didn't search on the right thing.

Thanks,

Jim