ESP32 32Khz external crystal
Posted: Fri Sep 21, 2018 12:50 pm
Hi,
Is the external 32KHz crystal required for sleep mode to keep track of time and wake up at a specific time, and also to wakeup when a GPIO input changes? I am using ULP in sleep mode with 1 second interval and wake up the main CPU when a GPIO changes.
Is the external 32KHz crystal required for sleep mode to keep track of time and wake up at a specific time, and also to wakeup when a GPIO input changes? I am using ULP in sleep mode with 1 second interval and wake up the main CPU when a GPIO changes.