MCF52210 RTC problem

junkers13 — Tue, 22 Jul 2008 20:10:27 GMT

Hi,

For awhile now I've been using the RTC and its been working correctly, but now it is getting screwy. The way i have it configured is that it can update the clock if the time is sent serially. The problem occurs when I set the day register using the data received serially. For some reason it messes up the hours and minutes registers. It almost looks like every time the seconds register reaches 60 it increments both the minutes and the hours. The problem does not occur if I don't give the day register a value, the code is setup as follows:

//REAL TIME CLOCK CONFIG

MCF_CLOCK_RTCCR=0b01010110; //RTCCC
MCF_RTCGOCL = 0x00002000; //32KHz
MCF_CLOCK_RTCCR=0b01010111; //RTCCC\

// Writing to registers

MCF_RTC_HOURMIN = (((stimValue[parsingOffset + 3]) << 8) | (stimValue[parsingOffset + 4]));
MCF_RTC_SECONDS = MCF_RTC_SECONDS_SECONDS(stimValue[parsingOffset + 5]);

MCF_RTC_DAYS = (stimValue[parsingOffset +6]);

The stimValue is the data received serially, I'm just picking off the values needed to update

I know reading the values is not the problem becuase I looked in the registers and the acually values in the registers are changing, to weird numbers once the day reg is written to.

Thanks for any help.

Re: MCF52210 RTC problem

junkers13 — Sat, 02 Aug 2008 03:35:39 GMT

nvm I got it solved, freescale replied to me. It seems there is alot more to initializing the RTC than I thought.

ColdFire/68K Microcontrollers and ProcessorsのトピックMCF52210 RTC problem

MCF52210 RTC problem

Re: MCF52210 RTC problem