Comments (1)
cgreening
commented on July 20, 2024
I think I've got a solution to this now - I'm using it in my diy ereader project https://github.com/atomic14/diy-esp32-epub-reader
Doing this will keep pin2 high even in deep sleep so the power supply is kept on. This means you can now run ULP programs and use the EXT0 and EXT1 wake modes.
rtc_gpio_init(GPIO_NUM_2);
rtc_gpio_set_direction(GPIO_NUM_2, RTC_GPIO_MODE_OUTPUT_ONLY);
rtc_gpio_set_level(GPIO_NUM_2, 1);
rtc_gpio_hold_en(GPIO_NUM_2);
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