TMDSCNCD28388D:CM core Hard Fault

ryo tsuchiya

Part Number: TMDSCNCD28388D

Hello
I am currently adding FreeRTOS to the Lwip sample project and trying to get it working.
Ethernet_Init works without any problem, but when lwip_init function executed by tcpip_init in Lwip_Init is executed, Hard Fault occurs during debugging and it cannot be operated.

As a result of analysis, it is assumed that there is a problem with the contents executed by tcp_init in the lwip_init function.
A Hard Fault seems to occur when compiling with the LWIP_RAND() macro (rand function) in tcp_init included in the code.

I think it is probably necessary for the initialization behavior, but how can I solve it?

Also, when performing tcp communication with lwip, does the port have to be random?

thank you.

over 3 years ago

0 Siddharth Deshpande over 3 years ago

TI__Mastermind 36305 points

Hi,

Please debug it to find out the cause for hard fault. It maybe due to some corrupted memory.

You can refer the following link

https://www.freertos.org/Debugging-Hard-Faults-On-Cortex-M-Microcontrollers.html

Best Regards

Siddharth

0 ryo tsuchiya over 3 years ago in reply to Siddharth Deshpande

Prodigy 120 points

Hello
I have two questions:
1.When performing TCP communication with the LWIP library, should the port number be randomized during initialization?
2. Is there a hard fault countermeasure when executing the rand function that seems to be necessary for the initialization operation?
These are the two.

The cause of the Hard Fault is the tcp_init function being executed in the lwip_init function.
If the rand function used in the macro inside the function is included in the executable code and compiled, a Hard Fault will occur during debugging.

thank you.

0 Siddharth Deshpande over 3 years ago in reply to ryo tsuchiya

TI__Mastermind 36305 points

Hi,

TCP port need not be randomized, it can be static. Incoming connections must specify the same port in order to connect .

Not sure on the Hard fault caused during the execution of rand function.

Best Regards

Siddharth

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMDSCNCD28388D:CM core Hard Fault