clock signal to GPIO

[JIYEON]

Hello,

I want to send 614.4 kHz clock signal to GPIO.

I checked that GPIOTE example could be used for this.

When I update uint32_t cc_value at nrf_drv_timer_extended_compare, clock rate were changed.

The results were like below. Is there a way to be more closer to 614.4 kHz?

cc_value	External clock
14	570 kHz
13	616 kHz

[Kenneth]

I would expect the resolution here would be limited by 16MHz  so I would expect the steps to be 63ns. The accuracy will depend on the HFCLK, so I guess ~616 is the closest you can get yes.

Kenneth