ESP32: Wakeup from multiple GPIO sources and using predefined pin definitions instead of bitmask

The ESP32 can be set to wake up from sleep due to one of several pins going high. Which pin caused it to wake up? This has been causing me a few headaches with my combined mailbox and driveway monitor because sometimes multiple pins can be high at once. While researching this I also discovered... Continue Reading →

April 14, 2024 2

Calculating bitmask value for ESP32 external wake up: Google is your friend

Update 14 April 2024: I've discovered that it is not necessary to calculate bitmask values for the ext1 external wakeup with the ESP32. There are predefined definitions that you can use. If you are interested check out my post ESP32: Wakeup from multiple GPIO sources and using predefined pin definitions instead of bitmask I'm currently... Continue Reading →

May 3, 2023 2