Crash when loading UI when sendUpdate is part of a task

[skarfacegc]

I have a task that handles gathering the data that I want to show on the dashboard. Whenever I call sendUpdate I get a LoadProhibited error. Any idea where I should be looking?

SDK 4.43
ESP32
using platformio with everything updated (not sure it's actually current versions of everything)

[skarfacegc]

moving sendUpdate out of my task and into the main loop seems to have worked, just needed to add a vTaskDelay to the main loop. If I had passed dashboard into the task via params, would that have worked as well?

[skarfacegc]

So, there's definitely something going on here. When I move send update into the task that is issuing the card.update I start to get crashes immediately after the dashboard loads. Looks like it crashes on the first post load sendUpdate?

Moving sendupdate from main loop to this line breaks things.
https://github.com/skarfacegc/Probeinator/blob/b6d99cec3c06d846e662dd320c99dc3e1c1467a0/src/main.cpp#L189

This seems to be working fine when I put sendUpdate in the main loop.
Crashes look like what I pasted below. Done a ton of dev in my life, very little C. This may come down to I don't understand scoping well enough, but I /think/ I've dug through most of that.

Guru Meditation Error: Core  1 panic'ed (StoreProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0x4010cf3b  PS      : 0x00060834  A0      : 0x8010bee6  A1      : 0x3ffd3b10  
A2      : 0x3ffc5e20  A3      : 0x00000000  A4      : 0x0000ffff  A5      : 0x00000000  
A6      : 0x3f41bf50  A7      : 0x00000070  A8      : 0x00000002  A9      : 0x3ffd3a80  
A10     : 0x00000374  A11     : 0x9ad29925  A12     : 0x9ad29925  A13     : 0x3ffc5e78  
A14     : 0x00000354  A15     : 0x00000004  SAR     : 0x00000000  EXCCAUSE: 0x0000001d  
EXCVADDR: 0x00010047  LBEG    : 0x40089678  LEND    : 0x4008968e  LCOUNT  : 0xffffffff 

[skarfacegc]

sorry. I suck at github.

[skarfacegc]

Trying this again.

[ayushsharma82]

Hi @skarfacegc,

Internally the sendUpdate function broadcasts data ( more than 10KB depending on how much cards you have on dashboard ) to all websocket clients. You may have low memory allocated for that particular task which causes the ESP to crash.

You can try increasing this value to something like 10240: https://github.com/skarfacegc/Probeinator/blob/b6d99cec3c06d846e662dd320c99dc3e1c1467a0/src/main.cpp#L225

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