ST10F269 RTC PROBLEM !!!

pawel1 · ‎2006-06-30

Posted on June 30, 2006 at 14:07

pawel1 · ‎2006-06-25

Posted on June 25, 2006 at 13:53

Occasionally the RTCL RTCH register has decreases by a fixed amount (4096 or 16384). What is this??? Any suggestions? Thanks.

thomaskobler9 · ‎2006-06-28

Posted on June 29, 2006 at 06:16

When using CAN2, the RTC regs gets corrupted!

pawel1 · ‎2006-06-29

Posted on June 29, 2006 at 12:20

When using CAN2, the RTC regs gets corrupted!

I donâ€™t use CAN2â€¦.

Are you observing this problem randomly?

Yes.

Could you fix when you are observing exactly this problem?

Yes.

How are you detecting the RTCH decreased content?

I read value from RTCL RTCH every 1 sec.

I suspect the following points:

- What's the RTC basic clock frequency? May be you are not spying the RTCH register in real time.

I have external clock 11.0592 MHz and I init RTCPH RTCPL regs.

- Are you updating RTC registers in your code?

Yes. If occasionally the RTCL RTCH register has decreases, I fixed it.

- May be, you are unintentionally updating RTC registers?

Neila, pleaseâ€¦ :)

Regards,

Pawel