STM32duino Opta PlatformIO Build Error: Missing 'stm32_def.h' File

[osamahnini]

Describe the bug When attempting to build the project using PlatformIO with the Arduino framework for the Opta board, the compilation fails with a fatal error indicating that the stm32_def.h file is missing.

To Reproduce

Set up a PlatformIO project configured for the Opta board with the following platform and framework in platformio.ini:
ini

[env:opta]
platform = https://github.com/platformio/platform-ststm32.git
board = opta
framework = arduino

Include the following libraries in your platformio.ini:
ini

lib_deps =
  STM32duino [email protected]
  [email protected]
  [email protected]
  [email protected]
  [email protected]
  [email protected]+sha.61684d4
  [email protected]
  [email protected]
  [email protected]
  [email protected]
  [email protected]
  [email protected]
  Arduino Cloud Provider [email protected]
  Wifi

Attempt to build the project by running the build command in PlatformIO.
Observe the compilation error related to the missing stm32_def.h file.
Expected behavior The project should compile successfully without any missing file errors, resulting in a valid firmware binary for the Opta board.

OS: Windows 10
PlatformIO Version: 5.2.1 (example version; please specify your actual version)
STM32 core version: Using PlatformIO's platform-ststm32 at version 17.6.0+sha.9f7c0d8
Library versions: As listed in lib_deps
Upload method: SWD
Hardware (please complete the following information):

Board Name: Opta
Hardware Revision: Not specified
Extra hardware used if any:
STM32H747XIH6
WiFi module
RTC module
Additional context During the build process, the compiler cannot locate the stm32_def.h file, resulting in a fatal error. Below is the relevant portion of the build log:

In file included from .pio\libdeps\opta\STM32duino RTC\src\rtc.c:37:0:
.pio\libdeps\opta\STM32duino RTC\src\rtc.h:42:10: fatal error: stm32_def.h: No such file or directory

*******************************************************************
* Looking for stm32_def.h dependency? Check our library registry!
*
* CLI  > platformio lib search "header:stm32_def.h"
* Web  > https://registry.platformio.org/search?q=header:stm32_def.h
*
*******************************************************************

 #include "stm32_def.h"
          ^~~~~~~~~~~~~
compilation terminated.
*** [.pio\build\opta\libdae\STM32duino RTC\rtc.c.o] Error 1

Summary of Issue:

Missing Header File: The build fails because the stm32_def.h file is not found. This suggests that a directed dependency is missing or not properly included in the project.
Suggested Actions:

Verify Library Dependencies: Ensure that all necessary libraries, especially those that provide the stm32_def.h file, are correctly installed and included in the project.
Search for the Missing File: Use the PlatformIO library registry to search for and include the missing stm32_def.h file.
CLI: platformio lib search "header:stm32_def.h"
Web: PlatformIO Library Registry
Check Library Compatibility: Confirm that the versions of the libraries used are compatible with the platform-ststm32 and the Opta board.
Update or Install Missing Libraries: If the stm32_def.h file is part of a specific library, add it to your lib_deps in platformio.ini.
Additional Resources:

PlatformIO Library Registry
stm32duino GitHub Repository
stm32duino Forum

[valeros]

Hi @osamahnini, the STM32duino RTC library is not compatible with the Opta board because this board uses a completely different Arduino core based on the mbed framework.