CSE477 / DS3231

DS3231 driver with timestamp string function

Dependents:   swimate_v2

Fork of DS3231 by Robert Fischer

Files at this revision

API Documentation at this revision

Revision 5:71aad49938bc, committed 2014-05-28

Comitter:
paulbartell
Date:
Wed May 28 22:56:11 2014 +0000
Parent:
4:b5736355af3a
Commit message:
minor changes to loss of power detection;

Changed in this revision

DS3231.cpp Show annotated file Show diff for this revision Revisions of this file
DS3231.h Show annotated file Show diff for this revision Revisions of this file 
--- a/DS3231.cpp	Tue May 27 23:53:24 2014 +0000
+++ b/DS3231.cpp	Wed May 28 22:56:11 2014 +0000
@@ -2,6 +2,9 @@
 
 DS3231::DS3231(PinName sda, PinName scl) : i2c(sda, scl)
     {
+        
+        powerFailure = OSF();
+        
     } 
     
     
@@ -139,6 +142,7 @@
     {int reg=readRegister(DS3231_Control_Status);
      reg=reg&0x7F;
      writeRegister(DS3231_Control_Status,reg);
+     powerFailure = false;
     }     
     
 bool DS3231::OSF()
@@ -148,6 +152,5 @@
 
 bool DS3231::checkClockIntegrity()
 {
-    int reg=readRegister(DS3231_Control_Status);
-    return(!(reg&DS3231_bit_OSF));
+    return !powerFailure;
 }
\ No newline at end of file

--- a/DS3231.h	Tue May 27 23:53:24 2014 +0000
+++ b/DS3231.h	Wed May 28 22:56:11 2014 +0000
@@ -231,6 +231,7 @@
      void decodeTime(int regHours, int regMinutes, int regSeconds,int *Hours, int *Minutes, int *Seconds);
      void decodeDate(int regDate,int regMonth, int regYear, int *date, int *month, int *year);
      char charbuf[20];
+     bool powerFailure;
     };