Ethernet issue (STM32F7BIT)

[Edwin kaus]

Posted on October 12, 2017 at 14:40

Hello .,

I am working on STM32 MCU in our custom board, In this I am facing some issues related to Ethernet interface. 

I manage to generate Ethernet code using STM cube MX,(Using in RMII), The code is working but not reliably working,

 When I make ping from PC it works 3 time out of 5 iteration. It works for some time . I don't find any solution for this problem.

MCU : Running at 216Mhz

Ethernet configuration I am using: : 100Mbps,Full duplex mode, And I have not enabled Ethernet global interrupt(NVIC setting) , Does this configuration make any problem.

I have made some changes in code to make ping work :

int main(void)

{

  HAL_Init();

  SystemClock_Config();

  /* Initialize all configured peripherals */

  MX_GPIO_Init();

  MX_LWIP_Init();

  while (1)

  {  MX_LWIP_Process();

  }

  /* USER CODE END 3 */

}

If I add MX_LWIP_Process() function in while loop then only the ping is working (That is also for some time not every time). 

Can anyone suggest me to resolve this issue. 

I have attached cubeMX file for the reference.

#ethernet-stm32f7 #stme32-cube

[Amel NASRI]

Posted on October 16, 2017 at 15:32

Hi

karthikshivanna.94

‌,

Please refer to this discussion

https://community.st.com/0D70X000006SrvzSAC

, you may find some help there.

-Amel

[Edwin kaus]

Posted on October 19, 2017 at 18:13

Hello

st.mcu

The Ethernet issue is not yet resolved , I have tried in all aspect like interrupt mode and polling mode . I also tried using RTOS but still problem is unresolved. If I switch off and switch on the board some times work but some times Ethernet link not getting UP. Is there any timing issue creates this problem.

I am running MCU at 216MHZ speed , Is that high speed creates any issues in Ethernet.

I have wasted lot of time in this issue , Can you please help me to resolve the issue.

Thank you.,

[nguen nguyen]

hello, I have problem the same as you 

have you fixed it?

[HAkpı.1]

check if correct your ethernet phy addr

for the STM32F7-Discover LAN8742A_PHY_ADDRESS should be 0