When uploading code to an Arduino M0 from within Visual Studio, upload is always very slow (about a minute) and the log shows plenty of these lines:
avrdude: stk500isp_read_byte(): Sending read memory command: avrdude: ser_recv(): programmer is not responding
avrdude: stk500v2_ReceiveMessage(): timeout

If I switch to uploading from inside the Arduino IDE, the upload is very fast (a few seconds) and succeeds without any problems every time.

I have attached the log from Visual Micro.

Regards;
/jb

Hi,

Looks like its not discovering the m0 tools and dropping back to attempting a standard old style arduino upload.

Can you please switch on vmicro>compiler>verbose and "vmicro>compiler>show build properties" then build and post a new .txt so I can see what you have installed.

Also please say which ide version (visual studio or atmel studio and which version)

Thanks

Yeah, I had already verified that the command line was identical. 

I am using Visual Studio 2017 and the registered version of Visual Micro 1.1702.15/1705,7.

I was suspecting maybe something in the console redirect to the VS window?

Regards;
/jb

1) I tried both, it makes no difference.
2) The version of the driver for "Arduino M0 (native Mode)" is 1.1.1.0, 2015-03-19.

Regards;
/jb

Running the command from a CMD prompt actually shows the same problem. Seems this is not a Visual Micro issue.

Still works fine under Arduino though. Confusing.

Regards
/jb

++ also confirm what app is selected in the vm tool bar. Have you selected "arduino 1.6/1.8" or "Visual Micro"?

Thanks for testing.

I forgot that the M0 is the type of board that has to be commanded to boot onto a different port before upload

In your example you will see COM24 becoming COM15

I think the board also boots into programming mode when it first starts (after reset) but only if it is in programming mode will the command you have been trying work.

Notice the command contains -PCOM15

To cause these boards to boot into programming mode we have to open the com port on com24 at 1200 baud. That's how both Visual Micro and Arduino work. In arduino speak it's called "touching the serial port".

I will do some testing because there are some timings between how long we wait between the new port coming up and running the actual avrdude prog command. From memory the timing is 200-400 millis.  It's possible the new avrdude tools are different to past versions. 

I am sure another user has logged a similar issue over the past week or so but for a different (but similar upload) board so something suggests the new avrdude and the 1200 baud system will be the problem.

I will try to look at it over the next few days, until then you can use the file>preference>external editor option in the arduino to build and upload. It allows both ides to be open with the same project at the same time.

I have purchased an M0 and have the same issue. I'll look into it.

EDIT: Logged a report with arduino.org

Thanks

Sorry for the delay this took some testing.

The issue appears to be with the toolchain. I agree that it works from the java based arduino ide but it doesn't appear to work in normal windows apps.

You can try this for yourself.

In the arduino ide enable file>preferences>upload verbose

Then upload.

After upload you will see the avrdude.exe upload command.

Highlight and use keyboard to copy the entire avrdude.exe command line.

Open windows CMD

Past the command line with right click.

Press the reset button on your esp so it goes into bootloader mode.

Press ENTER in the cmd window to run the avrdude.exe upload command

Has same problem as visual micro?


I have raised the question in the arduino forum here

Hi

Any update on this yet?  I appreciate it is a tough one as it also doesn't work from the command line.  Having the same issue, getting lots of time outs when uploading using the M0 bootloader on a home built SAMD21 board and also on a M0 zero clone board.  It does upload, just loads of timeouts whilst it does it, but works fine via the Arduino IDE.

avrdude: safemode: hfuse reads as 58
avrdude: stk500isp_read_byte(.., efuse, 0x0, ...)
avrdude: stk500isp_read_byte(): Sending read memory command: avrdude: ser_recv(): programmer is not responding
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500isp_read_byte(.., efuse, 0x0, ...)
avrdude: stk500isp_read_byte(): Sending read memory command: avrdude: ser_recv(): programmer is not responding
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500isp_read_byte(.., efuse, 0x0, ...)
avrdude: stk500isp_read_byte(): Sending read memory command: avrdude: ser_recv(): programmer is not responding
avrdude: stk500v2_ReceiveMessage(): timeout
Problem uploading to board.  See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
 

Many thanks

Phil

Okay, my quick dirty fix for this, which means I can upload normally now from Visual Micro was to edit the boards.txt file at:

C:\Users\Phil\AppData\Local\Arduino15\packages\arduino\hardware\samd\1.8.14

Find the entry for the board in question in the board.txt file, in my case it was Arduino M0 and simply add -u after the protocol then restart Visual Studio

mzero_bl.upload.protocol=stk500v2 -u 

This then gets added to the command line, and uploads are all working without the long delays.

Thanks for the update and we will look at adding this in for the M0 / M0 Pro Boards, and update this thread when it is released for download.