Check 2 and 12. Both should be low. You can try removing everything connected to these pins externally to allow the internal pulldowns to do this automatically.

You only set esp_sleep_enable_timer_wakeup once. After the first sleep+wakeup, there is no wakeup source configured so it's expected that it remains in light sleep forever.

Try moving esp_sleep_enable_timer_wakeup to the line before esp_light_sleep_start.

You want to rule out a memory leak exhausting heap memory, not your task's stack.

Log these after each scan: esp_get_free_heap_size(), esp_get_minimum_free_heap_size()

https://docs.espressif.com/projects/esp ... structures

Also esp_now_send return value only indicates that the packet was internally queued successfully. You need to use the send callback to determine the outcome of sending it.

vTaskDelete doesn't return so obj never goes out of scope so obj's destructor never runs. This is expected. C++ has no way of "knowing" what vTaskDelete(NULL) does, it can't be cleaning up anything upon arbitrary function calls that it expects to return from. A separate function or your commented br...

However, if I programmatically set the brown-out detector threshold to 3.19v right before shutting off the boost converter (remember, the ultracap is 3.0v max), the ESP32-S2 is guaranteed to be held in brown-out reset until VDD reaches 3.30v. What is guaranteeing this? I would expect an immediate b...

https://github.com/boarchuz/bo_dfu Bitbanged USB Low Speed and DFU for the ESP32 2nd-stage bootloader. It works surprisingly well, give it a try! It's surreal plugging my ESP32 into my phone and updating it in a web browser (when WebUSB decides to work, at least). Some ideas: enable OTA updates with...

Remove 'static'

Looks like this: https://sourceware.org/binutils/docs/as ... nment.html

"As an optimization to improve performance, the assembler attempts to align branch targets so they do not cross instruction fetch boundaries."

Will overwrite. Only one is supported.