Waveform on GPIO16 during wakeup
Posted: Thu Mar 19, 2015 8:11 amHi,
Just to share my finding about deep sleep mode. As we know now GPIO16 and RESET has to be connected together for ESP8266 to wake from deep sleep mode. I guess during wakeup, RTC will generate a pulse on GPIO16 so as to reset the chip. Below is the waveform observed on GPIO16/RST
The falling edge actually only reaches 1.96V then it climbs immediately, with effective pulse width only 5.2us.
It seems ESP8266 is very easy to get resetted?
Just to share my finding about deep sleep mode. As we know now GPIO16 and RESET has to be connected together for ESP8266 to wake from deep sleep mode. I guess during wakeup, RTC will generate a pulse on GPIO16 so as to reset the chip. Below is the waveform observed on GPIO16/RST
The falling edge actually only reaches 1.96V then it climbs immediately, with effective pulse width only 5.2us.
It seems ESP8266 is very easy to get resetted?