it is possible to use pin XPD_DCDC as external wakeup? I found in 0D - ESP8266__Pin_List__Release_15-11-2014.xlsx that XPD_DCDC can act as EXT_WAKEUP (function 3). I need a wakeup ESP from deep sleep after press the button. I know that it is possible to connect button to EXT_RSTB and call system_deep_sleep(0), but this not prevent additional system reset when the ESP working.
XPD_DCDC/GPIO16 cannot function as deep sleep wake-up until it has been connected to EXT_RSTB.About deep sleep wake-up, GPIO16 will give low level signal to EXT_RSTB to reset module. That's why we request GPIO16 to connect to EXT_RSTB.
You can also connect external GPIO or button to EXT_RSTB to wake-up deep sleep.
More questions, please let us know.
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