CPU freq Test

[beadon]

We seem to be seeing slowness in a bare metal implementation.  We would like to confirm the nrf52832 CPU speed.  How can this be confirmed from within the codebase and/or logger ?

[Turbo J]

Simplest solution:

Run blinky example, measure blinking frequency.

[beadon]

I'd like to test if the nRF52832 is running at 32Mhz or 64Mhz.  Can the system just report this to me ?  I'm just not sure where in the NRF SDK to look.

[Dmitry]

nRF52 runs only at 64MHz, it cannot be changed. Peripheral bus works at 16MHz.

[Amanda Hsieh]

Hi,

The nRF52832 CPU clock speed is 64 MHz. See the CPU performance section. 

The peripheral bus runs on a different frequency, as described here: HFCLK clock controller

-Amanda H.

[beadon]

thank you, this is exactly what I was looking for.