Unit DS1307
From Ultibo.org
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Description
The Maxim DS1307 is an I2C interface, battery backed real time clock chip with full BCD clock and calendar and 56 bytes of software accessible NVRAM. The chip supports 12 or 24 hour format and is widely used in low cost RTC devices available from a range of suppliers.
This driver extends the real time clock API to include functions for directly reading and writing the NVRAM which could be used for storing device specific information and configuration or for non volatile storage of keys, passwords or tokens.
Constants
To be documented
Type definitions
To be documented
Public variables
To be documented
Function declarations
Initialization functions
procedure DS1307Init;
Description: To be documented
| Note | None documented |
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DS1307 RTC functions
function DS1307RTCStart(RTC:PRTCDevice):LongWord;
Description: To be documented
| Note | None documented |
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function DS1307RTCStop(RTC:PRTCDevice):LongWord;
Description: To be documented
| Note | None documented |
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function DS1307RTCGetTime(RTC:PRTCDevice):Int64;
Description: To be documented
| Note | None documented |
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function DS1307RTCSetTime(RTC:PRTCDevice; const Time:Int64):Int64;
Description: To be documented
| Note | None documented |
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DS1307 helper functions
function DS1307ReadRTC(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord):LongWord;
Description: To be documented
| Note | None documented |
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function DS1307WriteRTC(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord):LongWord;
Description: To be documented
| Note | None documented |
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function DS1307ReadNVRAM(RTC:PRTCDevice; Offset:Byte; Buffer:Pointer; Size:LongWord):LongWord;
Description: To be documented
| Note | None documented |
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function DS1307WriteNVRAM(RTC:PRTCDevice; Offset:Byte; Buffer:Pointer; Size:LongWord):LongWord;
Description: To be documented
| Note | None documented |
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function DS1307ReadControl(RTC:PRTCDevice; var Control:Byte):LongWord;
Description: To be documented
| Note | None documented |
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function DS1307WriteControl(RTC:PRTCDevice; Control:Byte):LongWord;
Description: To be documented
| Note | None documented |
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function DS1307DefaultRTCTime(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord):Boolean;
Description: To be documented
| Note | None documented |
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function DS1307FileTimeToRTCTime(RTC:PRTCDevice; const FileTime:Int64; Buffer:Pointer; Size:LongWord):Boolean;
Description: To be documented
| Note | None documented |
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function DS1307RTCTimeToFileTime(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord; var FileTime:Int64):Boolean;
Description: To be documented
| Note | None documented |
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