Hi,
I ran into a problem with nRF52840 based firmware development
I initialize the RTC with
Prescaler = 0
CC[0] = 0x19fd
I tried clock source synthesized from HFCLK and RC oscillator and got the same result (we don't have a LF crystal oscillator)
It should produce a period of 0x19fd/32768 = 203ms but I observe by toggling a pin in the IRQ Handler that the actual period is 112ms
If I breakpoint in my code after initializing the RTC and then let go, I get the right period 203ms
I am currently working on replacing the RTC with Timer for debug
Do you have any errata or known issue regarding RTC setup ?
How can I solve this issue ? I can provide the project if needed
Thanks,
Gabriel