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ATPL
Associate II
July 18, 2024
Question

STM32F407 Ethernet LwIP + FREERTOS ping break Hard fault

  • July 18, 2024
  • 2 replies
  • 865 views

Dear team,

I am facing an issue where my device disconnects and drops the ping whenever the master device tries to connect with RS-485 Devices. after some "request timeout" error the device goes into a hard fault.

The application runs on  STM32F407VET6 + LAN8742 Ethernet PHY + Free RTOS

3 Task, 2 Message Queue used in this application 

USART is used as interrupt mode - after receiving complete data, data is put into the message Queue

Total 3 tasks running on the same priority -osPriorityNormal

Task1- Handle TCP: put data into the Message Queue

Task2-  data conversion: get data from the Message Queue

Task3- Handle HTTP request 

Master Device/Software: Modscan32, PLC

Slave Devices (RS-485 Devices): Digital inputs, Digital Outputs, Analog Input, Analog Output

Terminating resistor used at the starting of RS-485 Bus.

Please suggest any solution for this problem, your valuable input will be helpful to me.

Hoping to hear from you soon.

 

Thanks & Regards,

Rahul

 

 

This topic has been closed for replies.

2 replies

STea
ST Employee
November 28, 2024

Hello @ATPL ,

This is lacking contest on the origin of the Hardfault as no code or call stack were provided to identify which part caused the Hardfault.

I recommend you check this article to help you identify what is causing the Hardfault (I would guess most probably stack is not big enough for handling the  RS-485 communication)
Regards
Hichem

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STea
ST Employee
December 31, 2024

Hello @ATPL ,

Any updates on this issue?

Regards

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
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