Can't upload after opening RESET-EN on Mega

I needed to disable auto reset because in my application it was causing problems. After cutting the trace I found that I cannot update the Mega unless I bridge the RESET-EN contacts.

Is this the expected behavior?

Is this the expected behavior?

Yes it is. Resetting the processor is the only why to activate the bootloader program. In theory you can press the reset button on the board when wanting to upload a new program from the IDE, however the timing of when to press it is kind of tricky.

Lefty

Thanks...

This Mega is my first Arduino so I did not realize the implication of breaking that trace. I was under the (false) impression that it only stopped the reset when a client connected.

I may reconnect the points and try the resistor method I have seen documented.

Thanks…

This Mega is my first Arduino so I did not realize the implication of breaking that trace. I was under the (false) impression that it only stopped the reset when a client connected.

I may reconnect the points and try the resistor method I have seen documented.

Indeed. It stops it from resetting when connecting to the computer, but also when anything tries to reset it via the Serial connection.

You could just add some solder between the points and bridge them :).