<![CDATA[Core Ink Wake Up button from Deep Sleep]]>Can't get my M5 Core Ink to wake up from deep sleep using a button :

esp_sleep_enable_ext0_wakeup(GPIO_NUM_5, LOW); // EXT buton
esp_deep_sleep_start();

It goes to deep sleep but does not wake up from button. It does wake up from an RTC timer though.
I also tried holding power pin without success:

gpio_hold_en((gpio_num_t) POWER_HOLD_PIN);
gpio_deep_sleep_hold_en();

Thanks for your help!
Alex.

]]>https://community.m5stack.com/topic/3421/core-ink-wake-up-button-from-deep-sleepRSS for NodeSat, 11 Apr 2026 21:28:50 GMTMon, 28 Jun 2021 16:22:50 GMT60<![CDATA[Reply to Core Ink Wake Up button from Deep Sleep on Thu, 01 Jul 2021 17:48:48 GMT]]>Hello @alexylem

only so called RTC_GPIOs can wake ESP32 from deep sleep. Unfortunately GPIO_NUM_5 is not one of them.

Please check out page 15 - Pin description of the ESP32 datasheet.

Thanks
Felix

]]>https://community.m5stack.com/post/14301https://community.m5stack.com/post/14301Thu, 01 Jul 2021 17:48:48 GMT