The Clock implements the device for the real time clock, providing an interface to retrieve the current date/time.
More...
#include <device/clock.h>
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| Clock () |
| | Constructor.
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void | init () |
| | Initialize Clock and its interrupts.
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| uint32_t | getTimestamp () const |
| | Get current time stamp. More...
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| DateTime | getDateTime () const |
| | Get current date and time. More...
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| bool | prologue () override |
| | Prologue for Real Time Clock Since the RTC can cause three different interrupts, the prologue is required to determine the source. More...
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| void | epilogue () override |
| | Epilogue for Real Time Clock. More...
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| Gate () |
| | Constructor.
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| virtual | ~Gate () |
| | Destructor. More...
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| virtual bool | prologue ()=0 |
| | Device-specific interrupt handling routine that is executed immediately after the interrupt occurs (asynchronously). More...
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| virtual void | epilogue () |
| | Possibly delayed, synchronously executed Device-specific interrupt handling routine. More...
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| enum | Interrupt {
NONE = 0
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UPDATE = 1 << 4
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ALARM = 1 << 5
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PERIODIC = 1 << 6
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| | Possible Interrupt sources. More...
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| enum | PeriodicFrequency {
FREQ_NONE = 0
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FREQ_8192HZ = 3
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FREQ_4096HZ = 4
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FREQ_2048HZ = 5
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FREQ_1024HZ = 6
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FREQ_512HZ = 7
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FREQ_256HZ = 8
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FREQ_128HZ = 9
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FREQ_64HZ = 10
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FREQ_32HZ = 11
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FREQ_16HZ = 12
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FREQ_8HZ = 13
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FREQ_4HZ = 14
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FREQ_2HZ = 15
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| | Frequencies for periodic interval. More...
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| static void | setPeriodic (enum PeriodicFrequency freq) |
| | Set a periodic interrupt interval. More...
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| static void | setAlarm (uint8_t hour, uint8_t minute, uint8_t second) |
| | Set an alarm. More...
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| static void | receiveInterrupt (Interrupt i, bool enable) |
| | Enable or disable an interrupt source. More...
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| static Interrupt | getSource () |
| | Get the source of the last interrupt. More...
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| static DateTime | getDateTime () |
| | Get current date and time. More...
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The Clock implements the device for the real time clock, providing an interface to retrieve the current date/time.
Instead of reading several CMOS registers on each call to Clock::getDateTime / Clock::getTimestamp() (which is quite expensive), the update interrupt is used to keep track of the current timestamp in a local variable.
| uint32_t Clock::getTimestamp |
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const |
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inline |
Get current time stamp.
- Returns
- seconds since Unix epoch
Get current date and time.
- Returns
- the current date and time
Prologue for Real Time Clock Since the RTC can cause three different interrupts, the prologue is required to determine the source.
- Returns
true if the epilogue has to be executed.
Implements Gate.
Epilogue for Real Time Clock.
Updates the time on the screen
Reimplemented from Gate.
The documentation for this class was generated from the following files:
Inheritance diagram for Clock: