1ms tick function with system clock 16MHz ?

Question

I made code like to below for using 16Mhz system clock. 
 /* Start 16 MHz crystal oscillator */
NRF_CLOCK->EVENTS_HFCLKSTARTED = 0; NRF_CLOCK->TASKS_HFCLKSTART = 1; 
 /* Wait for the external oscillator to start up */
while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0)
{
}
NRF_CLOCK->EVENTS_HFCLKSTARTED = 0; 
 after this routine, I would like to configure 1ms tick timer.
I think that the 1ms tick timer seem to be made using timer interrupt(timerX_IRQn). So, Can I make the tick timer using 32.768Hz with system clock 16MHz? If this is possible, How can I make code? 
 I look forward to wait for your detailed guide.

Håkon Alseth · Accepted Answer

Hi, 
 For setting up a TIMER or RTC with a 1 ms interval, please see the examples "rtc_example" and "timer_example" in the SDK. They are not directly setup with this interval, but that can be changed by adjusting the values for CC-registers. 
 If you want the 16M to source the 32kHz RTC, then this can be set in register "NRF_CLOCK->LFCLKSRC" 
 Best regards
Håkon