Build the ESP32 IDF Libraries

Using the instructions on the Espressif website.

Download the complete Msys2 enviroment and toolchain and unzip to c:\msys2

Download the required ESP IDF into the nanoClr build default location c:\Esp32_tools\esp-idf-v3.3.1

Set up your Windows environment with the IDF_PATH=c:\Esp32_tools\esp-idf-v3.3.1

Start Msys command shell C:\msys32\mingw32.exe

 cd /c/esp32_tools/esp-idf-v3.3.1/examples/get-started/blink/

run:

make menuconfig

Change the following options:

• Esp32 specific/Cpu frquency 240Mhz
• Esp32 specific/Initialize Task Watchdog Timer in startup = OFF
• Esp32 specific/Main XTAL frequency = Autodetect
• LWIP SO RCVbuf
• Component config/Bluetooth enable
• FatFS Long filename support(Heap)
• Psram autodetect 32bit or 64bit

Save and Exit

Run make to build blink project

Exit msys2

Copy the libraries to the Esp32_tools/lib-v3.3.1 directory

Copy the nf-interpreter\targets\FreeRTOS_ESP32\ESP32_WROOM_32\CopyLibs.cmd to the c:\esp32_tools\esp-idf-v3.3.1\examples\get-started\blink directory Open windows command in same directory and run batch file.

This will create and copy all the libraries plus the bootloader.bin to the c:\esp32_tools\libs-v3.3.1 directory

copy the updated build/include/sdkconfig.h to the nf-interpreter\targets\FreeRTOS_ESP32\ESP32_WROOM_32 directory

Check/update build files

In the nf-interpreter repo check/update the following files:

• azure-pipelines-templates\build-esp32.ymlAppveyor.yml
• azure-pipelines-templates\download-install-esp32-build-components.yml
• install-scripts\install-esp32-idf.ps1
• install-scripts\install_esp32-libs.ps1