Revision as of 20:43, 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	Range
SEC	Seconds value	0 to 59
MIN	Minutes value	0 to 59
HOUR	Hours value	0 to 23
DOM	Day of Month value	1 to 28,29,30 or 31 ( depending on the month and whether it is a leap year).
DOW	Day of Week value	0 to 6
DOY	Day of Year value	1 to 365 (366 for Leap Year)
MONTH	Month value	1 to 12
YEAR	Year value	0 to 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

Consolidated Time Register 0 (CTIME0)

CTIME0
31:27	24:26	23:21	20:16	15:14	13:8	7:6	5:0
Reserved	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	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

@@ Line 53: / Line 53: @@
 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
+=====Consolidated Time Register 0 (CTIME0) =====
+{| class="wikitable" style="text-align:center; background-color:#ABCDEF;margin: 1em auto 1em auto"
+!colspan = '9'|CTIME0
+|-
+| 31:27 || 24:26 || 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) =====
+{| class="wikitable" style="text-align:center; background-color:#ABCDEF;margin: 1em auto 1em auto"
+!colspan = '9'|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) =====
+{| class="wikitable" style="text-align:center; background-color:#ABCDEF;margin: 1em auto 1em auto"
+!colspan = '9'|CTIME2
+|-
+| 31:12 || 11:0
+|-
+| Reserved || Day of Year
+|}
 =Steps for configuring RTC=

Difference between revisions of "LPC1768: RTC Programming"