AzureRTOS Nx_TCP_Echo_Server on NUCLEO-H743ZI2

[Irek]

Hello everyone,

I use the NUCLEO-H743ZI2 board in my project and previously, Before I've used the MBed OS - it works well on this board, just I need to maximize TCP transfer speed as well as QSPI. So I decided to try another RTOS. After reading forums, I decided to try the Azure RTOS and Cube IDE. I chose the Nx_TCP_Echo_Echo_Server example as a starting point. I reconfigured it to use with NUCLEO-H743ZI2, and also I disabled DHCP as I don't need it. Also added plenty of printf functions at different steps in the app_netxduo.c. As result project can be build, and I see next messages in Terminal:

The network cable is connected.
nx_ip_interface_status_check == NX_SUCCESS.
nx_ip_address_set == NX_SUCCESS.
nx_tcp_socket_create == NX_SUCCESS .
nx_tcp_server_socket_listen == NX_SUCCESS .
TCP Server listening on PORT 5000
STM32 NX_APP_DEFAULT_IP_ADDRESS: 192.168.0.200
Next is the tx_semaphore_get

Then I try to ping the board I see the blinking LED on the Ethernet connector of the board but I get :

Ping statistics for 192.168.0.200:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

Thus, it looks like the function

static VOID tcp_listen_callback(NX_TCP_SOCKET *socket_ptr, UINT port)
{
tx_semaphore_put(&TCPSemaphore);
}

never called.

I already spent two days trying to find solutions. All receipts which I found - like
https://community.st.com/t5/stm32-mcus/ethernet-not-working-on-stm32h7x3/ta-p/49479
I implemented them - the result is the same.

Does anyone have any idea where is the problem?
Thanks in advance.

[Irek]

I have changed pins for the Ethernet adapter in the Nx_TCP_Server project according to schematic.

Result is absolutely amazing - now program freezes in the static void MX_USART3_UART_Init(void) at the line if (HAL_UART_Init(&huart3) != HAL_OK)
It is a real magic! How changing pins for Ethernet can influence the USART3 ? Pins are completely different...

[mbarg.1]

It is not only gpio pins - compare my and your ioc files to see what else is wrong

Uart is the problem I found earlier, with 2 project nested

[Irek]

Ok, I assume you have a correct ioc file. 
But when I open your ioc file in Cube IDE I see plenty of colours as many of the features are disabled or have warnings. E.g. I use QSPI in my hardware - and it is disabled in your configuration. 
And it really looks like a black magic!

For example: in your ioc : Mcu.Pin59=PG11,

in CubeIDE's ioc :             Mcu.Pin18=PG11

And in the MB1364 schematic I see that PG11 corresponds to the pin 126 (!)

So I don't understand in which god I should trust ! ;) But Ok - this is a secondary problem for now.

Could you please help me to get a working Nx_TCP_Echo_Server example with static IP address on the NUCLEO-H743ZI2 board? 
Or related question. If I switch to the FreeRTOS-Plus-TCP in the Cube IDE will I have difficulties with ioc file too?
Just in MBed Studio everything worked well without such problems...

[mbarg.1]

As result, the project can be build and uploaded to the board, but it restarts every second - I see it in the Terminal. 
And I still do not have a chance to ping my board. 

Just stop watchdog - comment out line 184 in main.c

Question:

do you need TCP server or HTTP server?

Actually you should have only STM basic code working.

Test it.

You should see some network activity in NX_IP instance with Live expressions - see attached

Suggestions for future use:

Always use tools and examples as intended by designer.

First understand how tool are intended to be used , see videos in youtube.

If Stm removed examples from STM32cubeIde menu for nucleo-h743, there must be some reason.

Nucleo-H743 is obsolete - it should mean something.

Don't be afraid of what is set-up, you can remove later once you are familiar with code and everything works.

Mike

[Irek]

Hello Mike,

Thank you for your recommendations, but... 

Just stop watchdog - comment out line 184 in main.c

Yes - now it is not restarting. But it's also not responding to ping.

You should see some network activity in NX_IP instance with Live expressions - see attached

It is amazing: this code works if I run it - so I see some response in Terminal. But if I run it in Debug mode, then it hung at SCB_EnableDCache(); So I can't reach NX_IP instance with Live expressions 

Nucleo-H743 is obsolete - it should mean something.

Once again - MBed OS working well on this board - so there is no problem with HW. 

do you need TCP server or HTTP server?

I need very basic TCP server with static IP address on the NUCLEO-H743ZI2 board - it is working as a bridge between FPGA (connected by QSPI) and computer. So I need to receive raw byte buffers and send them back. Nothing more. MBed do not provide me the speed which I need, so I decided to try Cube IDE with some non-LWIP library. 
Can you suggest something working?

[Irek]

Good morning!
I succeed to compile and run the LwIP_HTTP_Server_Netconn_RTOS example on my NUCLEO-H743ZI2 board.
And I succeed to run it with static IP and not DHCP. But this example use LWIP as MBed - so not very fast and not very stable.

Can someone suggest working non-LWIP library for NUCLEO-H743ZI2 board?

[matt-crc]

Hi @Irek 

I'm using the H743 on a custom board and it works with Azrtos, ThreadX, and Netduo.   I'm also running XVC (xilinx virtual cable) to connect to the Xilinx and qspi memory for FPGA debugging and programming.

You should start with the Nx_TCP_Echo_Client  for the H723, and then just change the chip to a H743.  

Good luck.

[mbarg.1]

NetxDuo is best available - I agree LwIP is not reliable - but also NetxDuo has some limitations, be careful and test your specs till last bit before committing to it.

TCP seerver are embedded in HTTP, FTP, and other servers, not availbale as standalone.

You need to dig in heavvy nested code, unless you have great skill, you will run in trouble.

We did a lot of reverse engineering to get websockets on top of http, but never had requests for pure TCP.

I suggest to have a look at available protocols, I know some are happy with MQTT which is in NetXDuo.

I never used it.

I was for a long time Xilinx developer and IP provider, I love Fpga+Dsp+Mpu solutions.

Another solution, could be to build a QUIC protocol on top of UDP, UDP is in NetXDuo

[Irek]

Thank you for the reply, Matt!
I have started with the Nx_TCP_Echo_Client for the H723, just as you suggested changed manually in all the files the chip to a H743.

But it doesn't work - see my first post. As result now I know that one of the reason is that ioc file for H743 contains errors.

Now I am going to try FreeRTOS-PLUS-TCP.

[matt-crc]

@Irek 

Ok, if you return to azrtos, then the only other thing it could be is that your memory map is not setup properly.  I think there were 3 memory addresses that needed to be set in the cubemx (.ioc) file under the ethernet parameters, and then you have to add a few lines to the flash.ID file so it allocates the ram at the correct locations.

Anyway, good luck with FreeRTOS, it works with that OS as well.