NUCLEO-H743ZI (STM32H743ZI) no Ethernet DMA transfer

[Joerg Wagner]

Posted on October 08, 2017 at 15:11

Hi all.

Does anyone have a working example for Ethernet?

I tried to build one wih CubeMX (HAL 1.1.0) with and without FreeRTOS.

I did it many times for F746, F767 (A and Z) and F769 (A) but Ethernet with STM32H743ZI (Ver. Y) will not work.

- IDE is OpenSTM32 (GNU C)

- RAM is AXI SRAM in Domain D1 or AHB SRAM1 in Domain D2

- no DTCM RAM is used (in linker script: i.e. RAM_D1 >AT FLASH, _estack is adapted)

- Instruction Cache enabled and Data Cache is disabled

- no MPU

- ethernetif.c line 421 is commented out: // SCB_CleanInvalidateDCache();

- ethernetif.c line 443 is commented out: // SCB_CleanInvalidateDCache();

Another options:

- using 0x30040000 and MPU for DMARxDscrTab[ETH_RX_DESC_CNT] and DMATxDscrTab[ETH_TX_DESC_CNT]

- DHCP or static IP

- Data cache enabled and using original SCB_CleanIvalidDCache();

The result:

stm32h7xx_hal_eth.c : HAL_ETH_Transmit(...) throws a timeout in line 708 and returns HAL_ERROR

which is not recognized by low_level_output() in ethernetif.c

Using a different timeout value (>0) in the HAL_ETH_Transmit( &heth, &TxConfig, myTimeOutVal) throws a timeout as well.

When I enable MPUETHADDR16_COPY(&ethhdr->src, src); in ethernet.c it will end in Infinite_Loop. (Edited: wrong MPU settings)

Using AHB SRAM2 in Domain D2, the software cannot be debugged. I hope not to forget something: payload is in domain D2, LAN8742 is activated in CubeMX (Platform settings), ...

In conclusion: The DMA transfer does not work.

I spent so many hours to find a solution and I'm thankful for any advice.

Note: this post was migrated and contained many threaded conversations, some content may be missing.

[Amel NASRI]

Hello @edwin8​ ,

Could you please take the time to create a new thread where you describe your problem?

Seeing that there are several customers facing issues with Ethernet on STM32H7, we would like to manage each case separately with a special focus in a dedicated action.

Thanks,

Amel

[Joerg Wagner]

This thread is very old. In the meantime two new firmware versions came out

and a FAQ is available:

https://community.st.com/s/article/FAQ-Ethernet-not-working-on-STM32H7x3

Follow these steps and everything works properly.

[MX_Master]

Hi, I made a new example project using STM32Cube_FW_H7_V1.3.0. You can find it here

https://github.com/MX-Master/STM32H7_Nucleo-H743ZI_Ethernet_LwIP

This project uses LwIP stack without RTOS. There is a HTTPD (web server) example too.

Configuration info can be found in the README.

[M abouhasem]

Yes it is working will ​

Could you tell why cubmx generation code not working ?

[JSomi]

HI Joerg,

I am also facing the same situation with stm32H750B-DK discovery board. The code exactly stops at the location you mentioned. Did you find any solution for the issue you faced long back.

I converted existing example LWIP ....\STM32Cube_FW_H7_V1.4.0\Projects\STM32H743I-EVAL\Applications\LwIP\LwIP_HTTP_Server_Raw to this board with some modification in linker file and replaced relevent library files. I also attached linker file, please check it out. The board is not able to get IP address from the router. I have complete Atollic Project, If you need I can send you also.

Please help me to resolve this issue.

[Joerg Wagner]

Hi.

I don't know how to help you. Do you use MPU_Config() and/or D-Cache ?

[JSomi]

HI,

I used MPU_Config() and also enable D-cache. I attached the MPU_config() file.... I even tried with RTos using the example LwIP_HTTP_Server_Netconn_RTOS. Problem is same thing the ethernet is not receiving any data. Please help me out if any one worked on STM32H750B-DK board.