ESP32 Forum

Posted: **Sat Feb 10, 2024 4:11 pm**

Hello, everyone,
I have noticed crashes in my ESP32 after several calls to the webserver using the httpd library.
I've also tried httpd_register_uri_handler a very simple function that only gives an HTTP 200 response and every time it receives a call the memory increments by about 300bytes this results in esp going into

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abort() was called at PC 0x420a16be on core 0
Setting breakpoint at 0x40377331 and returning...

Now I'm analysing the problem with the debugger but I can't figure out where the heap memory occupancy is checked.
I notice the memory increase with

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multi_heap_info_t info;
heap_caps_get_info(&info, MALLOC_CAP_INTERNAL); 
info.total_allocated_bytes

Is there any way to see the heap occupancy during debugging? would be the sum of the variables?

Thanks

Posted: **Sat Feb 10, 2024 4:46 pm**

https://docs.espressif.com/projects/esp ... debug.html

Do you get a backtrace output when the error happens?

Also,

and every time it receives a call the memory increments by about 300bytes this results in esp going into

300 bytes 'lost' per HTTP request? 30kb/100 requests? At that pace, it'd likely take hundreds of requests for the issue to become apparent. Are you sure this is what causes the abort() you're seeing?

Posted: **Sat Feb 10, 2024 5:33 pm**

Yes, I am quite sure that this is the problem.
I've tried replicating it by sending a lot of requests and in the process keeping track of the heap size and when it exceeds a certain threshold the abort happens. plus minus the threshold is always the same.
In the meantime I have carried out these tests I have stopped all other tasks not related to the network.

With the debugger connected I replicated the problem again and am now stopped at the point that generated the abort.
Unfortunately I don't have much experience with the debugger... try to see if the following information is sufficient to pinpoint the problem.

: Debug; panicAbort.jpg (123.81 KiB) Viewed 550 times

In the meantime I'll try to see if I can get more information using the link you gave me.

Thanks

ESP32 Forum

Displaying heap memory occupation

Displaying heap memory occupation

Re: Displaying heap memory occupation

Re: Displaying heap memory occupation