[PATCH] bsps/arm/stm32f4 Optimize get pin and change from HAL to LL

[Duc Doan]

Hello Cedric,

On Wed, 2022-07-06 at 16:41 +0200, Cedric Berger wrote:
> One more detail and one question follows:
> 
> >   static unsigned int EXTIx_IRQn[] = {
> >       EXTI0_IRQn,
> >       EXTI1_IRQn,
> 
> Detail: You should really mark all constants like that "const": on a 
> STM32 with little RAM, the constants stays in FLASH and that makes a 
> difference.
> 

Thanks, I will change that.

> Finally, sorry for my ignorance - I don't know the overall plan on
> that 
> project here - but I'm sure that code is 99.5% compatible with the 
> STM32H7. Do you plan to enable it there too?

Actually my project is focused on STM32F4, but it is nice that the code
could be extensible to H7. However, I can't think of a good way to use
that code with H7 right now; do you think that the code can be copied
and pasted to H7 BSP? Or is there a better way to share the code among
all STM32 BSPs?

Best,

Duc Doan