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Build a smartpower3

Linux(platformio)

Install platformio

(https://docs.platformio.org/en/latest//core/installation.html)

Get a smartpower3 source code including submodules

git clone --recursive https://github.com/hardkernel/smartpower3

Check again the submodule repository

cd smartpower3
git submodule init
git submodule update

Compile & Upload

pio run --target upload
pio run --target uploadfs

Notes on building the firmware using Platformio

Build environment, libraries and their versions

Platform

Platform build environment pulls in some more general libraries, for example bus and filesystem libraries (Wire/I2C, SPI, SPIFFS etc.). As these may change between (major) versions, it is advisable to fix platform version in platformio.ini file.

That is not to say that you shouldn't use the latest platform version - on the contrary. But it gives you a known working starting point - if you can compile the original firmware code without any changes to the codebase and version settings, flash it into the device and it works as expected, than any problem is likely related to any update or changes you may have made. Should you make a change and things went wrong, then you have a good idea what change exactly caused the problem and work from there.

Libraries

Some of the more specific hardware libraries required to build the project can be included into the firmware build in two ways. The original way of using git submodule (using source and version fixed in git) or by linking them via platformio.ini.

If you remove lib_deps information from platformio.ini, the submodules at their checked out versions will be used. Or you can use library manager in Platformio (for VSCode or other with similar functionality), download the same library at different version and then see which one works best for your use-case. There are more options - see documentation on setting up your project and configuration options (https://docs.platformio.org/en/latest/projectconf/index.html) and notes in platformio.ini provided with the project.

Again, as is the case with platform settings, having a known version working configuration and updating from there can help pinpoint any problem you may encounter.