STM32F4 HAL Ethernet module change (compatibility break)

[fpistm]

Since STM32CubeF4 Firmware Package v1.27.0:

The following changes done on the HAL drivers require an update of the application code based on older HAL versions

Rework of HAL Ethernet driver to resolve problems and improve performance.(compatibility break)

• A new HAL Ethernet driver has been redesigned with new APIs, to bypass limitations with previous HAL Ethernet driver version.
• The new HAL Ethernet driver is the recommended version. It is located as usual in Drivers/STM32F4xx_HAL_Driver/Src and Drivers/STM32F4xx_HAL_Driver/Inc folders.
  • It can be enabled through switch HAL_ETH_MODULE_ENABLEDin stm32f4xx_hal_conf.h
• The legacy HAL Ethernet driver is also present in the release in Drivers/STM32F4xx_HAL_Driver/Src/Legacy and Drivers/STM32F4xx_HAL_Driver/Inc/Legacy folders for software compatibility reasons.
  • Its usage is not recommended as deprecated. It can however be enabled through switch HAL_ETH_LEGACY_MODULE_ENABLEDin stm32f4xx_hal_conf.h

[fpistm]

To avoid breaking compatibility with new HAL driver, HAL legacy support has been added to the core: https://github.com/stm32duino/Arduino_Core_STM32/pull/1710

While this issue is not implemented, legacy driver will be used.