Building ESP32 Code from scratch

[MartinP1]

Cloned Repository from Github. Tried to build with VSCode and got the mentioned error message...

src/ESP32React/ESP32React.cpp:3:10: fatal error: WWWData.h: No such file or directory

... These targets start with 'ci_' as seen in the platformio.ini file and should not be used. If you see the error "fatal error: WWWData.h: No such file or directory" then you are using the wrong target. For local builds create a pio_local.ini file (an example file is provided) and choose the target board you want to build for.

looked for target starting with 'ci_' in platformio.ini - no text match

created a "pio_local.ini" file - does not help ...

My Platform is a linux mint PC with no updates in queue..

Final message

The terminal process "platformio 'run', '--environment', 's_4M'" terminated with exit code: 1.

[MichaelDvP]

See https://docs.emsesp.org/Building/
You have to install nodejs. In interface folder run pnpn install and pnpm build_webUI.
Then you can run pio.

Or see the pio_local.ini_example, the command you are looking fore is extra_scripts = pre:scripts/build_interface.py ; builds the WebUI

[MartinP1]

Does not work: "pnpm install" works, but "pnpm build webUI" fails

martin@martin-D2836-S1:~/github/EMS-ESP32/interface$ pnpm build_webUI
 ERR_PNPM_RECURSIVE_EXEC_FIRST_FAIL  Command "build_webUI" not found

[proddy]

There was a typo (if you knew node.js and looked into the package.json file you would have found it).

i've updated the documentation (https://docs.emsesp.org/Building) with the new name, and made a comment that you should be building the firmware if you have knowledge of web development, node and using platformio.

[MartinP1]

Was able to fix it by using a development container...

Using linux mint PC

• installing Docker.io
• added my user to group docker
• logout/login
• from vs-code ctrl-shift-P and devcontainer:clone repository (long wait)
• in dev container console the "pio run -e build-webUI" worked

Afterwards building the ESP32 Code worked also

I think, problems to build without development container are caused by some strange things Linux Mint is doing to force a certain python and node version

[proddy]

thanks, that's good feedback for others.