Hello! In https://www.espressif.com/sites/default/files/documentation/esp32_errata_en.pdf on 3.11 you can read "3.11. When certain RTC peripherals are powered on, the inputs of GPIO36 and GPIO39 will be pulled down for approximately 80 ns. Details: Powering on the following RTC peripherals will trig...

If I understand what your asking, I believe this example does what you want. https://github.com/espressif/esp-idf/blob/master/examples/peripherals/gpio/generic_gpio/main/gpio_example_main.c When the IRQ fires for the pin, it reads the pin level and sends that value via xQueueSendFromISR. Thanks a l...

I use method 1. There is no need to read the GPIO via ADC. Simply use gpio_get_level(gpio_num_t gpio_num). HTH Thanks a lot for the advice! I made some tests. /* snippet 1 */ /* SOME_GPIO_ISR configured for [b]any edge[/b] interrupt firing, the pulses has active level LOW. */ static bool wait_begin...

Hi there! I work with ESP 32 (ESP-IDF) and try to detect a cause of interrupt - rising or falling edge. I know some ways to accomplish. So: 1. Use one GPIO configured as an interrupt emitter (rise and fall), after it we need to measure a voltage on GPIO (of course by ADC) - is not bad method, but ne...