Visual Micro currently only performs an Arduino build.

It is not so difficult to create a custom arduino core but will take a bit of reading.

Do you know the build commands for the FreeRTOS system?

The way arduino works is that every core has a set of code files along with a boards.txt and platform.txt. The .txt files contain the instructions used to determine the required build commands for each board. They are all different.

For example if you are building the Arduino Uno then you are using AVR architecture. Below the ArduinoIDE\Hardware\AVR folder is the avr core along with .txt files.

When you install esp32 or esp8266 Arduino cores then you are installed some code files and also the .txt files.

So you need to make or use an arduino core

There are a lot of people using the standard exressif cores for arduino so that works fine.

FreeRTOS is not a part of any standard arduino cores.

The best solution is to make what you want work in the arduino ide then visual micro should also be happy.

The guide is here but if you can't answer my initial questions it's going to be hard for you.

Maybe I am wrong but you might be jumping a bit too fast

Did you try the arduino espressif?

https://github.com/espressif/arduino-esp32

Not currently.

Because Visual Micro is mainly free or low price there isn't room for complex support which is why I stick to what is published and known.

If you can find a user who knows what they are doing then they could help us understand what doesn't work.

This is how VS works if sources are not in the project.

If you click "vMicro>Toggle Hidden Files" then core and library sources are added as short cuts to the project.

Then F12 takes you to the cpp