[PATCH] STM32H743ZI Nucleo and basic lwIP support

[Robin Müller]

Actually, the configurations for GPIOA and GPIOC are completely overlapping
and could be reused to the NUCLEO BSP.

Kind Regards
Robin

On Wed, 21 Apr 2021 at 11:23, Robin Müller <robin.mueller.m at gmail.com>
wrote:

> I'm sorry I have to dig this up and bother you again but it's something
> that i spotted when browsing the STM CubeH7 code and which is a similar
> problem to the UART3 issue and might affect NUCLEO users who would like to
> use libbsd networking.
> Similarly to the UART3, the pins for the ETH initialization seem to be
> different for the NUCLEO device.
>
> More specifically, the code for the NUCLEO-H743ZI looks like this:
>
>   /* Configure PA1, PA2 and PA7 */
>   GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
>   GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
>   GPIO_InitStructure.Pull = GPIO_NOPULL;
>   GPIO_InitStructure.Alternate = GPIO_AF11_ETH;
>   GPIO_InitStructure.Pin = GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_7;
>   HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
>
>   /* Configure PB13 */
>   GPIO_InitStructure.Pin = GPIO_PIN_13;
>   HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
>
>   /* Configure PC1, PC4 and PC5 */
>   GPIO_InitStructure.Pin = GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5;
>   HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
>
>   /* Configure PG2, PG11, PG13 and PG14 */
>   GPIO_InitStructure.Pin =  GPIO_PIN_2 | GPIO_PIN_11 | GPIO_PIN_13;
>   HAL_GPIO_Init(GPIOG, &GPIO_InitStructure);
>
> So instead of GPIOA 1,2 and 7, GPIOG 11, 12 and 13 and GPIOC 1, 4, 5, the
> pins above are used.
>
> KInd Regards
> Robin
>
> On Mon, 12 Apr 2021 at 11:23, Robin Müller <robin.mueller.m at gmail.com>
> wrote:
>
>> I can split up the rest of the patch.
>> I would rename STM32H7_ADD_LWIP from the BSP configuration to
>> RTEMS_USE_LWIP as a more generic variant which could be reused for other
>> BSPs if that is okay.
>>
>> Kind Regards
>> Robin
>>
>> On Mon, 12 Apr 2021 at 10:46, Robin Müller <robin.mueller.m at gmail.com>
>> wrote:
>>
>>> The variant worked without issues.
>>>
>>> Kind Regards
>>> Robin
>>>
>>> On Fri, 9 Apr 2021 at 09:21, Robin Müller <robin.mueller.m at gmail.com>
>>> wrote:
>>>
>>>> Hello Sebastian,
>>>>
>>>> I will have a look at it soon.
>>>>
>>>> Kind Regards
>>>> Robin
>>>>
>>>> On Tue, 6 Apr 2021 at 10:01, Sebastian Huber <
>>>> sebastian.huber at embedded-brains.de> wrote:
>>>>
>>>>> Hello Robin,
>>>>>
>>>>> sorry for the delay. I checked in some patches to add a
>>>>> "arm/nucleo-h743zi" BSP variant. Could you please check if this
>>>>> variant
>>>>> works on the board.
>>>>>
>>>>> Could you please split up the remaining pieces of the patch into
>>>>> separate commits.
>>>>>
>>>>> --
>>>>> embedded brains GmbH
>>>>> Herr Sebastian HUBER
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>>>>> Germany
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