Unable to upload to Mega2560

Development Tools Uploading
1

Hi, I am new to posting but I am just frustrated as it was working hours before and then the boards manager decided to update the drivers. I am re doing my lighting automation as previously used proprietary boards are not produced any more (ie oxrs rack 32).
Using a Mega 2560 from eBay when uploading I get :-

avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.

avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer
Failed uploading: uploading error: exit status 1

avrdude: ser_open(): can't set com-state for "\.\COM6"

I am sure that the port is com 6 as Tools/Ports detects it, I have tried it on several Mega boards and they all don't communicate, uno boards are fine. A search on the net comes up with a suggestion from Rich Langer of placing a capacitor in parallel with C4 so that it resets prior to communicating, the thing is they used to work. Any suggestions please.

2

Please enable verbose output during upload and disable verbose output during compilation under file/preferences; I think you already did the first. Perform an upload and post the output here using code tags (you can use the <CODE/> button above the compose window).

Some questions:

  1. How are you uploading? Via USB or using a programmer (which one)?
  2. Which version of the IDE?
  3. Which version of Windows (10/11/...)?
  4. Which board packages have you installed except for AVR which does not include the CH340 driver? Which board package did you update?

The Chinese clones usually use the CH340 serial-to-usb adapter. If it is indeed the update of that driver, Port monitor error: command 'open' failed: Invalid serial port. Could not connect to COM serial port - #49 by ptillisch contains instructions to roll it back.

Please post a link.

3

Hi sterretje,
I am uploading via USB
I am using IDE 2.3.2
Windows 11
Board packages Arduino AVR Boards 1.8.6 and 1.6.23 and 1.6.13
the annoying thing is that it was working before it did an update .
I have restored the windows drivers to the CH340 and it now works wonderfully.
Thanks sterretje you are a life saver.

4

I wonder which board package was updated?

FYI, I usually don't allow driver updates.