Revision as of 20:57, 4 June 2015

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Objective

RTC Registers

CCR ( Clock Control Register )

CCR
31:5	4	3:2	1	0
-	CCALEN	-	CTCRST	CLKEN

Bit 0 – CLKEN : Clock Enable

Bit 1 - CTCRST : CTC Reset

Bit 3:2

Bit 4 - CCALEN

Bit 31:5

Time Counter Register

Time Counter Register
Name	Description	Minimum Value	Maximum Value
SEC	Seconds value	0	59
MIN	Minutes value	0	59
HOUR	Hours value	0	23
DOM	Day of Month value	1	28,29,30 or 31 ( depending on the month and whether it is a leap year).
DOW	Day of Week value	0	6
DOY	Day of Year value	1	365 (366 for Leap Year)
MONTH	Month value	1	12
YEAR	Year value	0	4095

Consolidated Time Registers

The values of the Time Counters can optionally be read in a consolidated format which allows the programmer to read all time counters with only three read operations.

There are 3 Consolidated Time Registers. The minimum and maximum values of the various fields in these registers are same as the respective Time Counter Register.

These registers are read only. New values should be written to Time Counter Registers.

Consolidated Time Register 0 (CTIME0)

CTIME0
31:27	26:24	23:21	20:16	15:14	13:8	7:6	5:0
Reserved	Day of Week	Reserved	Hours	Reserved	Minute	Reserved	Second

Consolidated Time Register 1 (CTIME1)

CTIME1
31:27	27:16	15:12	11:8	7:5	4:0
Reserved	Year	Reserved	Month	Reserved	Day of Month

Consolidated Time Register 2 (CTIME2)

CTIME2
31:12	11:0
Reserved	Day of Year

Steps for Configuring RTC

Code EXample

Example 1

Using Explore Embedded Liberaries

Difference between revisions of "LPC1768: RTC Programming"