nucleo-F746 ethrnet, lwip configıration

[HS]

Hi,

I am using Nucleo F746 eval board. I configured ethernet and lwip. But I can't get ping. "Reply from 169.254.255.144: Destination host unreachable." I get feedback like: My ETH and Lwip configurations are below. Can you help with this issue?

[Issamos]

Hello @HS  

I suggest you to start from this exemple's configuration.

Best regards.

II

[HS]

Hi,

There is no ios file in the example in this link and I think I made a mistake here. How can I find the ioc file?

[Issamos]

Open the project in CubeIDE and then in the main.c compare the configuration in this project to your configurations. 

Best regards.

II

[KDJEM.1]

Hello @HS ,

The STM32F746xx devices are based on the high-performance ARM^®Cortex^®-M7, for that it is recommended to configure cortex-M7:

• Enable ICache and DCache.
• Enable memory protection unit (MPU) in “Background Region Privileged access only + MPU Disabled ...” mode. Configure regions according to the picture below:

Could you please check the MPU configuration?

Kaouthar

[LCE]

Unless he knows about cache handling, I'd say that turning OFF the caches would be the easier path for a start.

[RMasi.19]

I use F746_Discovery, i follow your recomendation about MPU and LDCache, and the configuration before about LwIP. In the main.c i have added:

extern struct netif gnetif;

while(1)

{ ethernetif_input(&gnetif);

sys_check_timeouts();

}

In the pc i made ping 192.168.000.123 but no have answer of the F746, some can lack here ?

I also ran the program LwIP_HTTP_Server_Netconn_RTOS and yes work, can see the ping, the http web

and LCD

[LCE]

At least you have the example working, then go through that code and compare to your own.

You'll learn a lot about lwip...

[RMasi.19]

i see the example LwIP_HTTP_Server_Netconn_RTOS the call LwIP are mixed with lcd and os function, i search some simple for start of CubeMX or .ioc, because these is the purpose of these graphical configuration, make simple the management of the pheriperal.