Feature request: Pass arbitrary data pointer in HAL callbacks

[tdecker2]

It is really sad that ST decided to not implement this requested and really helpful feature: https://github.com/STMicroelectronics/STM32CubeG4/issues/23

Maybe we can change their minds by creating some more attention to this topic here? Leave a comment, when you also find this useful ;)

Example solution for the I²C driver by adding a void* to the handle:

typedef struct __I2C_HandleTypeDef
{
/* Rest of struct... */
#if (USE_HAL_CALLBACK_CONTEXT == 1)
  void *UserContext;
#endif /* USE_HAL_CALLBACK_CONTEXT */
} I2C_HandleTypeDef;

[Pavel A.]

.

[mƎALLEm · Accepted solution]

Hello all,

Getting back to you regarding this point and the dev team informed us that there is no plan to deploy this feature on the existing STM32CubeFW packages due to the heavy work to do considering the number of HAL drivers and STM32 series to cover.
So customer must rely on his own implementation for such a need. But the point could be addressed for new products in the future.