Cardputer ADV

Mamoulian

Hello.
Does anyone's internal RTC module work?

felmue

can you be more specific about what you mean by internal RTC module? According to the specifications M5Cardputer Adv does not have an RTC chip inside. What am I missing?

Thanks
Felix

Mamoulian

@felmue The M5Stack Cardputer, specifically the Cardputer-Adv version, does not explicitly list an "adv rtc module" in its specifications. However, it is powered by the ESP32-S3FN8 core processor, which includes two built-in RTC timers. One of these has a lower resolution (around 6us) and operates as long as it has power, while the other offers higher resolution (1us) but does not function in sleep modes. It's important to note that neither of these built-in RTC timers retains time across reboots.

felmue

Hello @Mamoulian

thank you for that information. I was not aware the the timers in ESP32S3 are also called RTC timers.

Thanks
Felix