NodeMCU ESP8266 V3 RESTART PROBLEM (watchdog timer)

[Danilo277]

Hello everyone, I've noticed that there is an issue when using the DMD2 library with any WiFi function. Initially, everything works fine, but after some time, the ESP8266 restarts. Sometimes it works well for a few hours, and other times it takes less than an hour before it restarts. In the serial terminal, I get the following error:

ets Jan 8 2013,rst cause:4, boot mode:(3,2)

wdt reset load 0x4010f000, len 3460, room 16 tail 4 chksum 0xcc load 0x3fff20b8, len 40, room 4 tail 4 chksum 0xc9 csum 0xc9 v000584a0 ~ld.....

I assume the problem is with the use of timer0, as both DMD2 and WiFi use the same timer?

The problem occurs in several my projects, but I didn't notice it right away.
I don't have blocking functions and I don't use delay(); in my code...

[9chakravarthy]

my esp8266 is wdt

Hello everyone, I've noticed that there is an issue when using the DMD2 library with any WiFi function. Initially, everything works fine, but after some time, the ESP8266 restarts. Sometimes it works well for a few hours, and other times it takes less than an hour before it restarts. In the serial terminal, I get the following error:

ets Jan 8 2013,rst cause:4, boot mode:(3,2)

wdt reset load 0x4010f000, len 3460, room 16 tail 4 chksum 0xcc load 0x3fff20b8, len 40, room 4 tail 4 chksum 0xc9 csum 0xc9 v000584a0 ~ld.....

I assume the problem is with the use of timer0, as both DMD2 and WiFi use the same timer?

The problem occurs in several my projects, but I didn't notice it right away. I don't have blocking functions and I don't use delay(); in my code...

i have the same problem but more frequently. less than 2 minutes. and there is compilation deprecation warning of " deprecated: Use IRAM_ATTR in place of ICACHE_RAM_ATTR to move functions into IRAM" help

[h4rm0n1c]

so this has been long coming. I've had to take a break from coding due to health issues.

I've made a branch here using chatgpt codex to just quickly analyze the library and see if it can fix it.

https://github.com/h4rm0n1c/DMD2/tree/codex/audit-library-for-arduino-and-esp8266-improvements

I'll have to dust off my DMD test rig and see how it runs, but for now, if people want to try that version of the library out, that MIGHT fix your WDT reset issue and a few other issues while we're at it.

If anybody else gets to it before me, report back on how it runs if you're able to get it working with this test branch.