Flashing PlatformIO projects
PlatformIO projects developed with LibreTiny can be flashed just like any other PIO project.
All binary files generated by PlatformIO will be in
.pio/build/<my_board>/. The methods described below may require you to get a file from that directory.
This path will be referred to as build directory.
LibreTiny has a built-in firmware uploader, based on ltchiptool. Pressing
Upload in PlatformIO IDE does all the work for you.
If you have more than one COM port, configure your PIO project first:
The device needs to be connected to your PC with a UART-TTL adapter. Refer to chip connection guides to learn how to connect your device.
Using ltchiptool (wired, via UART)
The UF2 file may have a different name, depending on the project you're building. Usually it's best to grab the latest (sorted by date) file with UF2 extension from the build directory.