Crash after ESP.getFreeHeap()

[vlast3k]

Basic Infos

Hardware

Core Version: Current Master

Description

I am currently debugging a problem where in some case calling ESP.getFreeHeap(), results in crash and restart - perhaps some watchdog reset. It happens almost always at a certain point of my code, and right before it works and says there are 30000 free bytes. Then i do some stuff, invoke the HTTP Client, and then call again ESP.getFreeHeap() and then it is stuck and the sketch restarts.

It is part of a big program, so i cannot easily post it here.

I just wanted to hear if somebody had already seen such problems - if not - i will share more info once i discover it

[vlast3k]

i finally managed to get an exception, seems like it is dumped only occasionally
this is what the exception says

Exception (3):
epc1=0x4022e14f epc2=0x00000000 epc3=0x00000000 excvaddr=0x40014989 depc=0x00000000

ctx: cont 
sp: 3fff18b0 end: 3fff1c40 offset: 01a0

>>>stack>>>
3fff1a50:  000000c8 3fff017c 3fff1ab0 30303288  
3fff1a60:  0000414a 000000df 3ffe972d 4021a64c  
3fff1a70:  00000009 00000001 3fff0c20 3fff1b40  
3fff1a80:  00000001 3ffe8914 3fff0b50 4022e1b0  
3fff1a90:  00000001 3ffe8914 00000000 40219664  
3fff1aa0:  3ffe972c 3ffe8914 3fff32e4 4023565d  
3fff1ab0:  402010bc 000000c8 3fff0b50 402014fa  
3fff1ac0:  00000001 000000c8 3fff0b50 4021c656  
3fff1ad0:  00000001 3fff017c 00000001 4021e751  
3fff1ae0:  3fff430c 000000af 000000a0 3fff0c20  
3fff1af0:  402039fa 00000064 00000064 3fff06fc  
3fff1b00:  00000001 00000000 3fff0200 40221cb5  
3fff1b10:  00005a83 3fff1b40 40203188 3fff0c20  
3fff1b20:  402039fa 00000064 00000064 3ffe9860  
3fff1b30:  3fff0068 3fff0b50 3fff0200 40221fa9  
3fff1b40:  3ffe8948 00000005 3fff4164 3fff42fc  
3fff1b50:  3fff42fc 00000004 3fff1b01 402024b7  
3fff1b60:  3fff40b5 00000000 00000335 4010020c  
3fff1b70:  0000002d 3fff3ce4 3fff1ba0 3fff0838  
3fff1b80:  0000002d 3fff3ce4 3fff40b5 40221fde  
3fff1b90:  3fff0838 3fff40a4 3fff40b5 4021bd39  
3fff1ba0:  00000000 00000000 00000000 3fff40cc  
3fff1bb0:  0000000f 00000007 00000000 4021c267  
3fff1bc0:  3fff0838 00000000 3fff0a00 3fff0a00  
3fff1bd0:  3fff0838 3fff40a4 3fff0938 4021c045  
3fff1be0:  00000001 3fff0c0c 00000000 40201562  
3fff1bf0:  3fffdad0 3fff0c0c 3fff0838 3fff0c0c  
3fff1c00:  3fffdad0 00000000 3fff0838 4021c09c  
3fff1c10:  3fffdad0 00000000 3fff0838 4022b751  
3fff1c20:  3fffdad0 00000000 3fff0c04 402031d4  
3fff1c30:  feefeffe feefeffe 3fff0c20 402057d0  
<<<stack<<<

this is what the debugger shows

And this is the code:

[vlast3k]

seems to happen after i call
HTTPClient http;
http.begin("http://:@192.168.1.116:9001/api/variables/rssi11");

will look further into this, but once i send correct URL it works fine