Need Help: Ethernet not working on H723ZG without FreeRTOS.

[eduardo_reis]

Hello Folks,

[Re-posting this question since I believe I had it in the from Board. I would delete the original one if I could.]

I use the H723ZG Nucleo board without FreeRTOS. I had configured Ethernet for the H723ZG in the past. But I am unable to configure it again now, even when following the same steps. When I first got it working, my configuration was based on this Youtube video STM32 ETHERNET #1. Hardware Configuration || PART 1.

In addition, I spent countless days trying to configure the Ethernet without FreeRTOS based on this post How to create project for STM32H7 with Ethernet and LwIP stack working from @Adam BERLINGER . I was able to get it working WITH FreeRTOS, but not WITHOUT it. And I am here to kindly ask for your help.

Here are some screenshots from my `.ioc` file.

I am testing it with the ping example.

/* USER CODE BEGIN 0 */
extern struct netif gnetif;
/* USER CODE END 0 */

[...]

/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/** PING Example */
ethernetif_input(&gnetif);
sys_check_timeouts();
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */

=== EDIT START

I noticed that in the MPU I was requestion 16 KBytes starting from 0x30000200 and I had the LWIP MEM_SIZE as 8 KBytes. I decided to change both, and I got a HardFault.

=== EDIT END

I would appreciate any feedback on this matter from anyone.

Many thanks,

Eduardo.

[STea]

Hello @eduardo_reis ,

At first glance it seems like you are missing this call in the while(1);

   Ethernet_Link_Periodic_Handle(&gnetif);

The MPU  configuration should be as follows following the example found in the cube firmware :

static void MPU_Config(void)
{
  MPU_Region_InitTypeDef MPU_InitStruct;

  /* Disable the MPU */
  HAL_MPU_Disable(); 
/* Configure the MPU attributes as Device not cacheable
     for ETH DMA descriptors */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x30000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_1KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER1;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /* Configure the MPU attributes as Normal Non Cacheable
     for LwIP RAM heap which contains the Tx buffers */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x30004000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_16KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER2;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);
HAL_MPU_ConfigRegion(&MPU_InitStruct);
}

The GPIO configuration should be as follows :

void HAL_ETH_MspInit(ETH_HandleTypeDef *heth)

{

GPIO_InitTypeDef GPIO_InitStructure = {0};



/* Ethernett MSP init: RMII Mode */

/* Ethernet pins configuration */

/*

 RMII_REF_CLK ----------------------> PA1

 RMII_MDIO -------------------------> PA2

 RMII_MDC --------------------------> PC1

 RMII_MII_CRS_DV -------------------> PA7

 RMII_MII_RXD0 ---------------------> PC4

 RMII_MII_RXD1 ---------------------> PC5

 RMII_MII_RXER ---------------------> PB10

 RMII_MII_TX_EN --------------------> PB11

 RMII_MII_TXD0 ---------------------> PB12

 RMII_MII_TXD1 ---------------------> PB13

 */



/* Enable GPIOs clocks */

 __HAL_RCC_GPIOA_CLK_ENABLE();

 __HAL_RCC_GPIOB_CLK_ENABLE();

 __HAL_RCC_GPIOC_CLK_ENABLE();



/* Configure PA1, PA2 , PA7 */

GPIO_InitStructure.Pin = GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_7;

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;

HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);



/* Configure PB10, PB11, PB12 and PB13 */

GPIO_InitStructure.Pin = GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | 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);



/* Enable Ethernet clocks */

 __HAL_RCC_ETH1MAC_CLK_ENABLE();

 __HAL_RCC_ETH1TX_CLK_ENABLE();

 __HAL_RCC_ETH1RX_CLK_ENABLE();

}

you can base your configuration on the STM32Cube_FW_H7_V1.11.1\Projects\STM32H735G-DK\Applications\LwIP\LwIP_TCP_Echo_Server example .

BR

[eduardo_reis]

Hello @STea,

Thank you for your feedback. I am a bit resistant to pasting C code that will be overwritten when regenerating the .ioc file since my project is constantly evolving and changes made from time to time.

Also, the schematics I have for my board (below)

points to a different pin assignment than the ones you gave in

/* Ethernet pins configuration */

/*

 RMII_REF_CLK ----------------------> PA1

 RMII_MDIO -------------------------> PA2

 RMII_MDC --------------------------> PC1

 RMII_MII_CRS_DV -------------------> PA7

 RMII_MII_RXD0 ---------------------> PC4

 RMII_MII_RXD1 ---------------------> PC5

 RMII_MII_RXER ---------------------> PB10

 RMII_MII_TX_EN --------------------> PB11

 RMII_MII_TXD0 ---------------------> PB12

 RMII_MII_TXD1 ---------------------> PB13

 */

----

Thank you for the MPU configuration and point this

   Ethernet_Link_Periodic_Handle(&gnetif);

I got ping to work, however it stops working after sequence 10.

eduardoj@ThunderBit:~$ ping 192.168.1.11
PING 192.168.1.11 (192.168.1.11) 56(84) bytes of data.
64 bytes from 192.168.1.11: icmp_seq=1 ttl=255 time=0.749 ms
64 bytes from 192.168.1.11: icmp_seq=2 ttl=255 time=0.465 ms
64 bytes from 192.168.1.11: icmp_seq=3 ttl=255 time=0.503 ms
64 bytes from 192.168.1.11: icmp_seq=4 ttl=255 time=0.426 ms
64 bytes from 192.168.1.11: icmp_seq=5 ttl=255 time=0.180 ms
64 bytes from 192.168.1.11: icmp_seq=6 ttl=255 time=0.474 ms
64 bytes from 192.168.1.11: icmp_seq=7 ttl=255 time=0.416 ms
64 bytes from 192.168.1.11: icmp_seq=8 ttl=255 time=0.526 ms
64 bytes from 192.168.1.11: icmp_seq=9 ttl=255 time=0.478 ms
64 bytes from 192.168.1.11: icmp_seq=10 ttl=255 time=0.189 ms
From 192.168.1.10 icmp_seq=48 Destination Host Unreachable
From 192.168.1.10 icmp_seq=49 Destination Host Unreachable
From 192.168.1.10 icmp_seq=50 Destination Host Unreachable
From 192.168.1.10 icmp_seq=51 Destination Host Unreachable
From 192.168.1.10 icmp_seq=52 Destination Host Unreachable
From 192.168.1.10 icmp_seq=53 Destination Host Unreachable

[STea]

Hello @eduardo_reis ,

i suggest that you close this thread and open another thread to address the ping getting out of reach after some sequences  .

[eduardo_reis]

Hello @STea 

How would I close it? I looked around and couldn't find that option.

[STea]

Hello @eduardo_reis ,

by marking the comment that answered your request as accepted solution .

BR

[eduardo_reis · Accepted solution]

This issue was solved with the solution for this other related question.

Also, MX_LWIP_Process() inside the while(1) can simply be used instead of all these other changes, since MX_LWIP_Process does exactly that.

---

@eduardo_reis wrote:

I am testing it with the ping example.

/* USER CODE BEGIN 0 */
extern struct netif gnetif;
/* USER CODE END 0 */

[...]

/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/** PING Example */
ethernetif_input(&gnetif);
sys_check_timeouts();
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */

---