What is the Nano ESP32 clockspeed by default?

Official Hardware Nano Family Nano ESP32
1

Hello

In the datasheet of Arduino Nano ESP32 I can read that the clockspeed can go up to 240Mhz.
grafik
I see the board is clocked via external 32Mhz Xtal.
So my question is how can I see at what clock to board is running by default?
How is the clock speed set or adjusted by software?

Thanks for helping
Best regards
Mascho11

2

That is correct, it depends on your program.

3

Hello @mascho11, the CPU in the Arduino Nano ESP32 is indeed clocked at 240MHz.
It is possible to change CPU Frequency on the fly via the setCpuFrequencyMhz() function; see the example "Serial_All_CPU_Freqs" under ESP32/Serial for more information.

Note, though, that users have reported issues with other peripheral clocks after changing it, so be aware and tread carefully! :wink:

1 Like
4

Hello lburelli
Thank you very much for your support.
Best regards Mascho11