Processor Expert SoftwareのトピックRe: RTC programed to the wrong time by PE_LDD

RTC programed to the wrong time by PE_LDD

randenewberry — Wed, 18 Mar 2015 21:23:13 GMT

How can we stop PE_LDD from overwriting the time in the RTC registers with the values in the PE properties panel on Power up?

Using MK22FX512VLH12 with KDS.

Re: RTC programed to the wrong time by PE_LDD

mjbcswitzerland — Wed, 18 Mar 2015 23:53:29 GMT

Hi Rande

I don't know the PE generated code but I expect that you can simply add a check of the validity of the timer and abort any initialistion (which should only be done when it is has not yet been configured)

if ((RTC_SR & RTC_SR_TIF) != 0) {

return; // RTC is alread operating so ignore

}

Note however that you will still need to ensure that the clock gate is enabled to the RTC after each reset (and to be able to check its validity) so the code will in fact look more like (similar to the uTasker time management solution):

POWER_UP(6, SIM_SCGC6_RTC);

if ((RTC_SR & RTC_SR_TIF) != 0) {

return; // RTC is alread operating so ignore

}

// Continue with the configuration...

Regards

Mark

Kinetis: µTasker Kinetis support

K22: µTasker Kinetis FRDM-K22F support / µTasker Kinetis TWR-K22F120M support

Time Management: http://www.utasker.com/docs/uTasker/uTasker_Time.pdf

For the complete "out-of-the-box" Kinetis experience and faster time to market

Re: RTC programed to the wrong time by PE_LDD

randenewberry — Tue, 24 Mar 2015 12:56:09 GMT

Thank you Mark for the reply. The problem is with PE, and we found a way

to make it work.

Thanks!

Rande Newberry

H-ITT, LLC, a Hyper-Interactive Teaching Technology Company

420 Shearer Blvd.-Cocoa, FL, 32922

PH: 888-322-0089

rande@h-itt.com

Re: RTC programed to the wrong time by PE_LDD

marek_neuzil — Thu, 26 Mar 2015 12:42:08 GMT

Hello,

I have provided answer on the same previous question, see Re: rtc resets at powerup.

Best Regards,

Marek Neuzil