S32KのトピックRe: Lwip stack gets hanged in netconn_recv api

Lwip stack gets hanged in netconn_recv api

rak14 — Thu, 29 Jun 2023 07:46:47 GMT

I'm sending continuous data packets from PC client to S32k148 uC server, after some point the netconn_recv gets hanged and doesn't come out of loop.

I've sent the packets from client but noe received in server.

What's the problem here and how can it be solved?

Thanks in advance..

Re: Lwip stack gets hanged in netconn_recv api

Nhi_Nguyen — Wed, 12 Jul 2023 07:48:14 GMT

Hi @rak14 ,

What version of RTD, FreeRTOS and TCPIP you are using?

Could you please share your configuration/project?

Best regards,

Nhi

Re: Lwip stack gets hanged in netconn_recv api

rak14 — Wed, 12 Jul 2023 12:42:19 GMT

Hi @Nhi_Nguyen ,

Microcontroller used: FS32K148UJT0VLUT

RTM Version: v3.0.0

FreeRTOS: v10.0.1

LWIP stack: stable v2.0.2

TCP/IP stack: v3.0.2

We are using LAN8710A as an ethernet transceiver.

The ethernet driver, lwip stack are taken from NXP examples and it is integrated with LAN8710A ethernet transceiver driver code which works in MII mode. The ethernet is working in 100Mbps speed, and in tcp/ip configurator we have enabled TCP_ECHO_NETCONN application.

When we send continuously the data packets from the PC (as a client) to the microcontroller (as a server) after some time the entire Mainloop task is getting stuck in xQueueReceive API and the tcpecho thread is getting stuck in netconn_recv_data API in turn stuck in xQueueReceive API.

So, what might be the problem causing this and how can it be fixed?

Re: Lwip stack gets hanged in netconn_recv api

Nhi_Nguyen — Wed, 12 Jul 2023 13:33:28 GMT

Hi @rak14 ,

Because we don't do stack, so I created the ticket to stack team. As I known, they start handling this ticket. I'll come back to you as soon as I receive their response.

Best regards,

Nhi

Re: Lwip stack gets hanged in netconn_recv api

rak14 — Thu, 20 Jul 2023 13:28:45 GMT

Hi @Nhi_Nguyen ,

Any updates regarding the query?

Further we debugged the tcpecho application and got to know when we send the data from client tcp application to uC the data is not being read in ethernet driver itself in the API ENET_DRV_ReadFrame as we added a printf for data received.
Any inputs on the same?

Re: Lwip stack gets hanged in netconn_recv api

Nhi_Nguyen — Thu, 20 Jul 2023 14:27:04 GMT

Hi rak14,

Unfortunately, they said that SDK version is old, so they have to take much time to look at it.

I'll remind them and come back to you as soon as I get response from them.

Best regards,

Nhi

Re: Lwip stack gets hanged in netconn_recv api

rak14 — Thu, 27 Jul 2023 13:01:34 GMT

Hi @Nhi_Nguyen ,

Any updates on this? we are waiting for the response from your side..

From our side when debugged the points we got:

The PHY we are using is LAN8710A in MII mode.
The data when sent from TCP client (PC) to TCP server(uC) the ethernet frame is not received by Ethernet driver itself.
When working the ethernet data length is 60. And when it hangs it is 54.

Thanks

Re: Lwip stack gets hanged in netconn_recv api

Nhi_Nguyen — Fri, 28 Jul 2023 03:09:27 GMT

Hi Rak14,

Unfortunately, I didn't receive any update on this. I reminded them already and come back to you as soon as I get response from them.

Best regards,

Nhi

Re: Lwip stack gets hanged in netconn_recv api

Nhi_Nguyen — Fri, 28 Jul 2023 07:14:39 GMT

Hi rak14,

SW team said that they're working on this, so could you please share configuration/project that you're using and encountered this issue?

Best regards,

Nhi

Re: Lwip stack gets hanged in netconn_recv api

rak14 — Fri, 28 Jul 2023 07:32:57 GMT

Hi @Nhi_Nguyen ,

Configurations:

We are using LAN8710A as an ethernet transceiver.
The ethernet driver, lwip stack are taken from NXP examples.
And it is integrated with LAN8710A ethernet transceiver driver code which works in MII mode.
The ethernet is working in 100Mbps speed, and in tcp/ip configurator we have enabled TCP_ECHO_NETCONN application.

Problem:

When we send the data continuously from TCP client (PC) to server (uC). at some point connection has been established data is also sent from client but not received in server side.

Re: Lwip stack gets hanged in netconn_recv api

Nhi_Nguyen — Mon, 31 Jul 2023 01:34:24 GMT

Hi rak14,

Developer said that could you please send them tcpip configuration's pex file? They want to ensure that this configuration is correct to don't take time to investigate it. Because they didn't reproduce the issue yet, so it is better if you can send them your project.

Best regards,

Nhi

Re: Lwip stack gets hanged in netconn_recv api

rak14 — Mon, 31 Jul 2023 13:35:55 GMT

Hi @Nhi_Nguyen ,

Please find the configuration file of tcp/ip and ethernet.

Thanks

Re: Lwip stack gets hanged in netconn_recv api

rak14 — Fri, 18 Aug 2023 07:05:35 GMT

Hi @Nhi_Nguyen ,

Any update from development team?

Re: Lwip stack gets hanged in netconn_recv api

Nhi_Nguyen — Mon, 21 Aug 2023 03:08:25 GMT

Hi rak14,

This is response from SW team:

"As I understood the customer is sending continuous data packets, while doing this after some time the packets are getting lost.

The issue was reproduced on the reported software version S32K1 SDK3.0.2 by sending messages every 100 ms, the TCP server stopped receiving messages. It looks like there is no indication of a new message from the enet driver.

Solutions and recommendations for the customer:

Integrate latest version of TCPIP, RTD and FreeRTOS for which this issue was already solved.

S32K1 RTD RTM 1.0.1
S32K1 FreeRTOS 1.0.1
S32K1 TCPIP 1.0.1

If integration of the latest software package is not possible please try the following:

Increase the RX/TX buffer size from 4 to 10 from enetif.h file

#define ENET_RXBD_NUM 4

#define ENET_TXBD_NUM 4

If the use-case allows start send messages every ~250 ms or slower in order to allow processing time for the tcp server."

Best regards,

Nhi

Re: Lwip stack gets hanged in netconn_recv api

rak14 — Mon, 21 Aug 2023 06:38:54 GMT

Hi @Nhi_Nguyen ,

Thanks for the update.

1. We tried increasing the ENET_RXBD_NUM & ENET_TXBD_NUM to 10 sent the data every 500ms but still it's not working.

2. Currently we are using:

RTM Version: v3.0.0
FreeRTOS: v10.0.1
LWIP stack: stable v2.0.2
TCP/IP stack: v3.0.2Which version needs to install to make this work, and Can I get the links for the same?

Also, can I know what's the reason the TCP server is unable to receive the data?

Thanks & regards,

Rak**bleep**h

Re: Lwip stack gets hanged in netconn_recv api

Nhi_Nguyen — Mon, 21 Aug 2023 09:36:16 GMT

Hi Rak14,

This is from SW team

RTD Standard software can be downloaded from here: https://www.nxp.com/webapp/swlicensing/sso/downloadSoftware.sp?catid=SW32K1-RTD44-D

Reference software can be downloaded from here: https://www.nxp.com/webapp/swlicensing/sso/downloadSoftware.sp?catid=SW32K1-REFSW-D

Please follow the documentation for installation details.

The issue how it has been diagnosed so far comes from the low level driver, and I could not continue with the analysis."

How did you configure Clock for TX_CLK and RX_CLK? and Port?

Did you try to measure signal at TX_CLK and RX_CLK? you're configuring MII 100 Mbps, so 2 these signals need to provide from external clock source is 25MHz.

Because ETH driver didn't receive message, so did you try to measure signal on both 4 Tx and RX data pins when you transmit/receive message to avoid interrupt by configuring or signal on board?

Best rehards,

Nhi

Re: Lwip stack gets hanged in netconn_recv api

rak14 — Wed, 23 Aug 2023 05:39:51 GMT

Hi,

We are giving the Clock to the TX_CLK & TR_CLK from PHY (to the PHY from external crystal) with 25MHz clock for MII 100Mbps mode.

We can't measure the signals of 4 TX & RX pins when it hangs right? Because we'll be not knowing when it will hangs.

Thanks

Re: Lwip stack gets hanged in netconn_recv api

Nhi_Nguyen — Wed, 23 Aug 2023 06:19:04 GMT

Hi Rak14,

Could you please send me value of registers ENET after any frame was sent to Chip?

Best regards,

Nhi

Re: Lwip stack gets hanged in netconn_recv api

rak14 — Wed, 23 Aug 2023 13:35:39 GMT

Hi,

Please find the attachment of the ENET Registers value when it's working.

Re: Lwip stack gets hanged in netconn_recv api

Nhi_Nguyen — Tue, 29 Aug 2023 09:35:14 GMT

Hi Rak14,

I saw this from registers that you sent me:

Form my view of low level driver, this usually come from RX_CLK is incorrect or not stable. But, because you received some frames, so my thought is second point, Rx_Clk is not stable. So, please sure that RX_CLK is stable and is 25 MHz. I'll ask upper layer if they have any experience about this.

Best regards,

Nhi