Low level drivers and HAL drives

[DS.4]

I see 2 types of drivers.

 

one are under ll , e.g., "stm32wbxx_hal_exti"

and one under hal e.g., "stm32wbxx_ll_exti"

Why are there two types for each?

Can EXTI C2EMR2 be configured via the hal drivers and not the ll drivers?

[Imen.D · Accepted solution]

Hello @Community member​ ,

The HAL and LL have their own include files defining what they need.

They are complementary and cover a wide range of application requirements:

• The HAL offers high-level and feature-oriented APIs with a high-portability level.
• The LL offers low-level APIs at register level, with better optimization but less portability.

I advise you to refer to this user manual UM2442 to have an overview of HAL and LL drivers, and how to use the given API to build your application.

When your question is answered, please close this topic by choosing Select as Best. This will help other users find that answer faster.

Imen

[DS.4]

Is there a BLE middleware for stm32wb5x that uses HAL instead of LL?