For that, you can use the following function: espsleepgetext1wakeupstatus() This function returns a number of base 2, with the GPIO number as an exponent: 2 (GPIO). When you use several pins to wake up the ESP32, it is useful to know which pin caused the wake up. I don't know if I need to store time (if that's what is required) and later display it without connecting to the internet, or use the now() function of time library to fetch the time after waking up and show it on the screen?Īfter every hour or so, as per requirements, I do again connect to the internet to transfer data, but I don't want to connect to the internet every time I have to show just the time upon waking up, plus it take few seconds to connect and fetch time, so I was wondering if there is any way to store and fetch time locally, syncing the local clocks every few hours. Identifying the GPIO used as a wake up source. To do this I either need to store time or if its implemented in the time library? During DeepSleep, the device is effectively off and, as such, it is not possible to modify DeepSleepTime without exiting DeepSleep. Once the command is issued, the DeepSleep cycle commences. How to do this in MicroPython Heres a minimal example: frommachine importPin, deepsleep fromtime importsleep importesp32 touchenp 25touchp 33touch Pin(touchp, Pin. DeepSleepTime sets the time the device remains in DeepSleep before it returns to full operating mode. This test shows that when this 'error' happens, code actually stop running, but does not enters deep sleep ( power-wise ) esp32. LED was attached to a GPIO, generating a blink on loop () - when sleep succeeds - it goes off, when it fails, it stays on. ![]() ![]() The issue is - The esp32 is later woken up by an external button, and I want it to display time, without connecting to the internet. This means you need to make the 'TTP223 power' GPIO (25) into an output and make sure its still an output during deepsleep. most of callback was commented out, remaining only printing incoming message. So, initially, esp32 connects to the WiFi, fetches time from ntp server, turns off WiFi, shows time on the display and then sleep after 30 sec. I have an ESP32 running on batteries with display.
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