Re: [lwip-users] Corrupted ETH Rx Buffer in STM32H7 with TCP protocol

[Indan Zupancic]

Hello,

On 2022-05-31 15:55, Rogier Wolff wrote:
> The other option is that the cache is corrupting things. You need to
> properly flush the caches after the DMA-into-a-buffer and before
> accessing the data.

Well, I think that was also missing from the original driver, but
can't remember. Maybe they assumed you would map it uncached, who
knows.

> I didn't have exactly the same setup as you, but possibly the same
> source of the problem. I spent quite a lot of time on that issue...

I think we spend about two weeks in total to find and solve all 
problems,
may have added up to more in the end though.

On 2022-05-31 15:54, Grant Edwards wrote:
> In my experience, target code provided by Silicon vendors is always
> very poor quality and should never be trusted. It's been like that for
> 40 years, and I've seen no sign of change.

Same experience here. Even the I2C driver didn't had work-arounds for
their own published errata's.

Greetings,

Indan