Probably millis() integer overflow problem

[DanielAndrascik]

Hi. After 49 days, all tasks will stop working. I only use a few "every" tasks but after 49 days all are dead. My UDP server in a separate thread is still running, that means ESP32 is alive. I guess it is millis() integer overflow problem.

[HamzaHajeir]

I don't think so, even that overflows, the difference is back to zero since it's unsigned.

[HamzaHajeir]

Hi @DanielAndrascik, you're correct, and I've just proposed a solution, you can take a look here:
HamzaHajeir@093b019

[HamzaHajeir]

To validate the issue, here's a MCVE:

#include <H4.h>
H4 h4(115200);

void testTimer(){
    Serial.printf("T=%lu testTimer()\n", millis());
    h4.once(UINT32_MAX, testTimer);
}
void h4setup(){
    delay(1); // ensure at least one millisecond pass
    testTimer();
}

[HamzaHajeir]

Solved in my fork.