- Wed Feb 19, 2020 1:18 am
#85736
EDIT: lol: I didn't realize there were a page 2 and 3 in this topic. 
Not according to https://www.espressif.com/sites/default ... eet_en.pdf
It also has a VDD_RTC pin specifically for it. But I don't think it's available in software. Just to keep a timer running while the CPU is off and provide reliable timing for the wifi and wake it up from sleep.
martinayotte wrote:ESP8266 doesn't have an internal RTC.
You can either add an external one, or simply do an NTP Request at power-up and keep a software clock updated using Time library.
Not according to https://www.espressif.com/sites/default ... eet_en.pdf
It also has a VDD_RTC pin specifically for it. But I don't think it's available in software. Just to keep a timer running while the CPU is off and provide reliable timing for the wifi and wake it up from sleep.
- Fri Feb 21, 2020 11:45 am
#85771
It is not a Real Time Clock, but a Real Time Counter, and this counter is reset at power up ...
Dolf Andringa wrote:Not according to https://www.espressif.com/sites/default ... eet_en.pdf
It also has a VDD_RTC pin specifically for it. But I don't think it's available in software. Just to keep a timer running while the CPU is off and provide reliable timing for the wifi and wake it up from sleep.
It is not a Real Time Clock, but a Real Time Counter, and this counter is reset at power up ...
