Re: [lwip-users] STM32F7 HAL issues

[Dave Nadler]

Hi Mario + Nico! You will want to see Alister's driver fixes here:
https://community.st.com/s/question/0D50X0000BozSc5SQE/ethernet-security-issues

Please let us know if this works for you,
Best Regards, Dave

On 1/17/2020 7:35 AM, Mário Luzeiro wrote:

> Hi Nico,
> I had issues with STM and the DMA fix did really improved.
> There was lot of work then trying to find the best configurations that works for me, but nothing more that I need to hack to get it working...
>
> Mario Luzeiro
>
> ________________________________________
> From: lwip-users <lwip-users-bounces+mrluzeiro=address@hidden> on behalf of Sachs, Nico <address@hidden>
> Sent: 17 January 2020 09:09
> To: Mailing list for lwIP users
> Subject: [lwip-users] STM32F7 HAL issues
>
> Hi,
> I know there were or are a lot of issues around stm32 ethernet  STM HAL / etherenetif from CubeMX etc.. which can be found on the st community or discussed here.
> I try to reopen this conversion, since anything which I found won't solve my issue.
>
> Issue: I run the http example from contrib on lwip 2.1.2. FS from example, and generated my file using makefsdata. So, If I now open the website, I get somewhere a frame which previous segment was not captured, resulting in some delays/timeouts on the full website load.
>
> I had hope that this which I found here https://community.st.com/s/question/0D50X00009XkgffSAB/stm32f746-ethernet-dma-transmit-problem would help on the issue, but including the memory barrier instruction wont help. But if I include some Delay before HAL_ETH_TransmitFrame(&heth, framelength); it works like a charm.
>
> So it has something to do with the descriptors, but I can't figure it out how to solve it. And I don't want to leave that delay in there.
>
> Is, there anybody out there who had similar issues?
>
> Cheers
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Dave Nadler, USA East Coast voice (978) 263-0097, address@hidden, Skype 
 Dave.Nadler1