How to route clock derived signal to GPIO on NRF52810?

[orbitcoms]

Is it possible to route a signal derived from internal clock to an IO pin? I am new to NRF micro controller. My experience has been with Cypress PSOC and in the IDE it was easy to create a clock derived from the main clock and route it to a pin.

What I need is a 31.25kHz (NOT 32.767 khz) signal on a GPIO pin. This is for an external device that currently uses a radial style crystal that is time consuming to assembly by hand and cannot find a pick and place friendly version of it. 

The current version of my project uses the Cypress PSOC to generate the 31.25kHz. As the project also uses a NRF24L01+, I can save space and cost replacing the micro and NRF with the NRF52810 module.

Thanks

[Dmitry]

Hi,

yes, it's possible though maybe not so easy as with Cypress. You can configure a timer to run, for example, at 1 MHz (PRESCALER=4), set compare register CC[0]=16 (that gives exactly 62.5 kHz), enable COMPARE0->CLEAR shortcut, configure GPIOTE channel for TOGGLE task then route COMPARE[0] event to GPIOTE.TASKS_OUT[n] through PPI.