OK. I figured out my issue and I'm pretty embarrassed to say what the issue was. It basically stems from the fact I let the code sit for awhile and came back to it not remembering my entire plan. What it came down to was that fact my strategy was that after the device woke up and started the timer a...

Thanks for that info. I will test and report back. I'm definitely weak in my knowledge of how some of the additional keywords for function and variable definitions that deal with how they are handled/placed in RAM or handled differently in a RTOS.

This simple program seems to work just fine: #include <stdio.h> #include "esp_log.h" #include "freertos/FreeRTOS.h" #include "freertos/timers.h" static const char* TAG = "timertesting"; bool timerEnabled = false; TimerHandle_t wakeTimerHandle = NULL; static void onTimer(TimerHandle_t timer){ timerEn...

So, nothing obviously wrong with the basic timer code above?

Rather than post a wall of code, I'll do what I should have already done and create a simple program to just start a 5 minute timer and print something out when it fires. If that behaves the same, I'll post that code.

Not for this particular timer. The "wake" in the variable names are reflecting that it is the timer to determine how long it stays awake before going back to sleep. What I am doing is putting the ESP to sleep with both esp_sleep_enable_ext0_wakeup() and esp_sleep_enable_timer_wakeup() so that I can ...

I'm relatively new to ESP-IDF and programming an ESP32 but not programming in general. In my particular case, I'm trying to create a timer that will fire after 5 minutes on an ESP32-S3 (Seeed Studio Xiao S3 Sense). My specific timer is defined and started as follows: wakeTimerHandle = xTimerCreate("...