Difference between revisions of "Unit RTC"

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Revision as of 05:44, 27 September 2016

Return to Unit Reference


Description

The RTC unit provides the device interface for real time clock modules to be registered with Ultibo core. Each RTC module requires a driver that communicates with the specific hardware to implement the device interface although many devices may use the same chip and will be covered by a single driver.

This unit registers the RTCGetTime and RTCSetTime functions with the Platform unit to enable hardware independent access to a real time clock module.

Constants

To be documented

Type definitions

To be documented

Public variables

To be documented

Function declarations


Initialization functions 

procedure RTCInit;
Description: To be documented
Note None documented


RTC functions 

function RTCDeviceStart(RTC:PRTCDevice):LongWord;
Description: To be documented
Note None documented 


function RTCDeviceStop(RTC:PRTCDevice):LongWord;
Description: To be documented
Note None documented 


function RTCDeviceGetTime(RTC:PRTCDevice):Int64;
Description: To be documented
Note None documented 


function RTCDeviceSetTime(RTC:PRTCDevice; const Time:Int64):Int64;
Description: To be documented
Note None documented 


function RTCDeviceProperties(RTC:PRTCDevice; Properties:PRTCProperties):LongWord;
Description: To be documented
Note None documented 


function RTCDeviceCreate:PRTCDevice;
Description: Create a new RTC entry
Return Pointer to new RTC entry or nil if RTC could not be created 


function RTCDeviceCreateEx(Size:LongWord):PRTCDevice;
Description: Create a new RTC entry
Size Size in bytes to allocate for new RTC (Including the RTC entry)
Return Pointer to new RTC entry or nil if RTC could not be created 


function RTCDeviceDestroy(RTC:PRTCDevice):LongWord;
Description: Destroy an existing RTC entry
Note None documented 


function RTCDeviceRegister(RTC:PRTCDevice):LongWord;
Description: Register a new RTC in the RTC table
Note None documented 


function RTCDeviceDeregister(RTC:PRTCDevice):LongWord;
Description: Deregister a RTC from the RTC table
Note None documented 


function RTCDeviceFind(RTCId:LongWord):PRTCDevice;
Description: To be documented
Note None documented 


function RTCDeviceFindByName(const Name:String):PRTCDevice; inline;
Description: To be documented
Note None documented 


function RTCDeviceFindByDescription(const Description:String):PRTCDevice; inline;
Description: To be documented
Note None documented 


function RTCDeviceEnumerate(Callback:TRTCEnumerate; Data:Pointer):LongWord;
Description: To be documented
Note None documented 


function RTCDeviceNotification(RTC:PRTCDevice; Callback:TRTCNotification; Data:Pointer; Notification,Flags:LongWord):LongWord;
Description: To be documented
Note None documented


RTL RTC functions 

function SysRTCAvailable:Boolean;
Description: Check if an RTC device is available
Note None documented 


function SysRTCGetTime:Int64;
Description: Get the current time from a RTC device
Note Returned time is 100 nanosecond ticks since 1 January 1601 


function SysRTCSetTime(const Time:Int64):Int64;
Description: Set the current time for a RTC device
Time The time to be set
Return The device time after setting (or 0 on failure)
Note Time and returned time is 100 nanosecond ticks since 1 January 1601


RTC helper functions 

function RTCGetCount:LongWord; inline;
Description: Get the current RTC count
Note None documented 


function RTCDeviceGetDefault:PRTCDevice; inline;
Description: Get the current default RTC device
Note None documented 


function RTCDeviceSetDefault(RTC:PRTCDevice):LongWord;
Description: Set the current default RTC device
Note None documented 


function RTCDeviceCheck(RTC:PRTCDevice):PRTCDevice;
Description: Check if the supplied RTC is in the RTC table
Note None documented 


function RTCTimeIsValid(const Time:TSystemTime):Boolean;
Description: To be documented
Note None documented 


function RTCSystemTimeToFileTime(const SystemTime:TSystemTime; var FileTime:Int64):Boolean;
Description: System time is assumed to be UTC and returned file time is UTC
Note None documented 


function RTCFileTimeToSystemTime(const FileTime:Int64; var SystemTime:TSystemTime):Boolean;
Description: File time is assumed to be UTC and returned system time is UTC
Note None documented 


procedure RTCLog(Level:LongWord; RTC:PRTCDevice; const AText:String);
Description: To be documented
Note None documented 


procedure RTCLogInfo(RTC:PRTCDevice; const AText:String); inline;
Description: To be documented
Note None documented 


procedure RTCLogError(RTC:PRTCDevice; const AText:String); inline;
Description: To be documented
Note None documented 


procedure RTCLogDebug(RTC:PRTCDevice; const AText:String); inline;
Description: To be documented
Note None documented


Return to Unit Reference

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