Difference between revisions of "LPC1768: RTC Programming"
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Revision as of 20:44, 4 June 2015
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Contents
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