Hi,
I've been using VM for close to 5 years now and very pleased with it.  All work so far has been on a Uno-compatible board with an RFM69 radio module running ChibiOS and fully Arduino-compatible.  No problems whenever I check it all still builds with the Arduino IDE. Impressive.   

I now need to add some functionality that requires more RAM and a WiFi capability in addition to the existing radio.  I was thinking of an ESP32 for the multitudinous small nodes.  However, I also have need for a central server unit that can do more PC-like stuff, and the Raspberry Pi looks ideal for that, and may be acceptable to replace the 328P also which would simplify the logistics, even be cheaper.

So I am starting to port over my code to the Pi.   I installed a package called RasPiArduino fron github to keep it Arduino-compatible.  This package installs a new board into the Arduino IDE and appears to use SSH to upload it to the Pi - though Telnet is also involved somehow.  I tested it with Blink and Serial and it works very well, in the Arduino IDE. However, I cannot get the upload to work in VM; it gives me the following:

Uploading 'Blink' to 'RaspberryPI B+/2' using '192.168.1.30'
Uploader started for board RaspberryPI B+/2
Upload method will be: bootloader
Uploading via Bootloader 
echo "Upload" C:\Users\Jed\AppData\Local\Temp\VMBuilds\Blink\RASPBE~1\Release/BLINKI~1.HEX
The system cannot find the file specified

In contrast, the Arduino IDE outputs the following:

/usr/bin/run-avrdude /tmp/sketch.hex
Sketch Started

Now, I've figured out that the Arduino IDE is remotely invoking the /usr/bin/run-avrdude script which actually just executes the uploaded sketch hex file (and generates the "Sketch Started" message). I have also figured out that "echo upload" stuff must be how the hex file transfer is supposed to get done (it's in the platform.txt in the tools section), and that the file not found is not the hex file, but that's as far as my knowledge takes me.

So my question is why it works fine in the Arduino IDE, but not with VS/VM?  Is there a piece of VM magic I need?  I'd really like to get it working, as there is no way I can continue without a real IDE.

Supplementary question:  a video tutorial on the RasPiArduino package suggests using the Arduino IDE "Export compiled Binary" command with a network share to hold the sketch and as an easy way to get the executable to the Pi.  I don't see that in VM:  did I miss it?

Thanks for your time.
Jed

Thanks, Tim.  I am new to RPi myself, but there is an amazing amount of stuff out there.

The particular package I am concentrating on is found on github at

https://github.com/me-no-dev/RasPiArduino

I am not familiar with the Yun, but I wouldn't be surprised if this package doesn't use a lot of the same stuff.  The examples folder has a lot of the same sketches.

There are also some Youtube tutorials, one of which is referenced from the github page and well worth a look, as it takes a simpler approach using the  "Export compiled Binary" command and a shared sketch folder, avoiding a bit of the Linux setup on the Pi, if that's not your cup of tea.  Following on your comments on the export command, I had tried what you suggested, and it does work.  The .bin file looks the same as the .hex file, and the .hex is an ELF file so is of course is is directly executable on the Pi (if built with the right toolchain). All you need is a way to get it there.

Anyhow, it would be good to be have the quick "build and upload" in the VS environment, which I got used to for the AVR, so if you can help that would be great.   I'd also be curious to know why the SSH doesn't already work, when it does in the Arduino IDE?  I don't of course know anything about the internals of VM, and probably don't need to, just curious.

Regards,
Jed