Freescale Semiconductor ColdFire MCF52210 - Manual (Page 175)

Initialization/Application Information
MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 11-15
Figure 11-14. Flow Chart of RTC Operation
11.4.2 Code Example for Initializing the Real-Time Clock
Figure 11-15 shows sample code for initializing the RTC.
MCF_CLOCK_RTCCR=0b01010110; //RTCCC
MCF_RTCGOCL = 0x00002000; //32KHz
MCF_CLOCK_RTCCR=0b01010111; //RTCCC
MCF_RTC_HOURMIN = MCF_RTC_HOURMIN_HOURS(((uint32)time_temp % 24));
MCF_RTC_HOURMIN = MCF_RTC_HOURMIN_MINUTES(((uint32)time_temp % 60));
MCF_RTC_SECONDS = MCF_RTC_SECONDS_SECONDS(((uint32)time_temp % 60));
Figure 11-15. Code Example for Initializing the Real-Time Clock
Configure RTC Control Register
Config RTC Days Counter Register
Config RTC Hr/Min Counter Register
Config RTC Alarm Registers
Config RTC Interrupt Enable Reg
Check RTC Interrupt Status Register
Config RTC Seconds Counter Reg