PlatformIO - thernstig/Arduino_Core_STM32 GitHub Wiki
Warning
The STM32duino GitHub organization does not support issue met using PlatformIO. Only the Arduino IDE is supported. Below information are provided "as it" based on this PR #1413 from @brianredbeard. Do not hesitate to correct them.
In your project, set your environment to use the platform setting ststm32 and the framework setting arduino, e.g:
[env]
platform = ststm32
framework = arduinoBehind the scenes this will create a dependency on the ST STM32: development platform for PlatformIO (ststm32) and the framework package framework-arduinoststm32 (the PlatformIOname of this library as noted in /package.json).
This repository should not be confused with the ST STM32: development platform which is located at https://github.com/platformio/platform-ststm32.