Difference between revisions of "Unit DS1307"

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''To be documented''
 
  
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'''Initialization functions'''
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">procedure DS1307Init;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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| None documented
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'''DS1307 RTC functions'''
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<pre style="border: 0; padding-bottom:0px;">function DS1307RTCStart(RTC:PRTCDevice):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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| None documented
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<pre style="border: 0; padding-bottom:0px;">function DS1307RTCStop(RTC:PRTCDevice):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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<pre style="border: 0; padding-bottom:0px;">function DS1307RTCGetTime(RTC:PRTCDevice):Int64;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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| None documented
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">function DS1307RTCSetTime(RTC:PRTCDevice; const Time:Int64):Int64;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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| None documented
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</div></div>
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<br />
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'''DS1307 helper functions'''
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">function DS1307ReadRTC(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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| None documented
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|}
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</div></div>
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">function DS1307WriteRTC(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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| None documented
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<pre style="border: 0; padding-bottom:0px;">function DS1307ReadNVRAM(RTC:PRTCDevice; Offset:Byte; Buffer:Pointer; Size:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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| None documented
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|}
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">function DS1307WriteNVRAM(RTC:PRTCDevice; Offset:Byte; Buffer:Pointer; Size:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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| None documented
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|}
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</div></div>
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">function DS1307ReadControl(RTC:PRTCDevice; var Control:Byte):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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| None documented
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|}
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</div></div>
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<br />
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">function DS1307WriteControl(RTC:PRTCDevice; Control:Byte):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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! '''Note'''
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| None documented
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|-
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|}
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</div></div>
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<br />
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">function DS1307DefaultRTCTime(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord):Boolean;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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! '''Note'''
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| None documented
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|}
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</div></div>
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">function DS1307FileTimeToRTCTime(RTC:PRTCDevice; const FileTime:Int64; Buffer:Pointer; Size:LongWord):Boolean;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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! '''Note'''
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| None documented
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|-
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|}
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</div></div>
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<br />
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">function DS1307RTCTimeToFileTime(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord; var FileTime:Int64):Boolean;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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! '''Note'''
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| None documented
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|-
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|}
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</div></div>
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Revision as of 23:51, 13 October 2016

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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


DS1307 RTC functions 

function DS1307RTCStart(RTC:PRTCDevice):LongWord;
Description: To be documented
Note None documented 


function DS1307RTCStop(RTC:PRTCDevice):LongWord;
Description: To be documented
Note None documented 


function DS1307RTCGetTime(RTC:PRTCDevice):Int64;
Description: To be documented
Note None documented 


function DS1307RTCSetTime(RTC:PRTCDevice; const Time:Int64):Int64;
Description: To be documented
Note None documented


DS1307 helper functions 

function DS1307ReadRTC(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord):LongWord;
Description: To be documented
Note None documented 


function DS1307WriteRTC(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord):LongWord;
Description: To be documented
Note None documented 


function DS1307ReadNVRAM(RTC:PRTCDevice; Offset:Byte; Buffer:Pointer; Size:LongWord):LongWord;
Description: To be documented
Note None documented 


function DS1307WriteNVRAM(RTC:PRTCDevice; Offset:Byte; Buffer:Pointer; Size:LongWord):LongWord;
Description: To be documented
Note None documented 


function DS1307ReadControl(RTC:PRTCDevice; var Control:Byte):LongWord;
Description: To be documented
Note None documented 


function DS1307WriteControl(RTC:PRTCDevice; Control:Byte):LongWord;
Description: To be documented
Note None documented 


function DS1307DefaultRTCTime(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord):Boolean;
Description: To be documented
Note None documented 


function DS1307FileTimeToRTCTime(RTC:PRTCDevice; const FileTime:Int64; Buffer:Pointer; Size:LongWord):Boolean;
Description: To be documented
Note None documented 


function DS1307RTCTimeToFileTime(RTC:PRTCDevice; Buffer:Pointer; Size:LongWord; var FileTime:Int64):Boolean;
Description: To be documented
Note None documented


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