'Include-Datei "RTC_Subroutine.bas"
'Wolfgang Schneider, 20.07.2007
'
'Unterprogramme für die Bascom Date/Time-Funktionen

Dim Weekday As Byte

Getdatetime:
  I2cstart
  I2cwbyte Ds1307w
  I2cwbyte 0
  I2cstart
  I2cwbyte Ds1307r
  I2crbyte _sec , Ack
  I2crbyte _min , Ack
  I2crbyte _hour , Ack
  I2crbyte Weekday , Ack
  I2crbyte _day , Ack
  I2crbyte _month , Ack
  I2crbyte _year , Nack
  I2cstop
  _sec = Makedec(_sec) : _min = Makedec(_min) : _hour = Makedec(_hour)
  _day = Makedec(_day) : _month = Makedec(_month) : _year = Makedec(_year)
Return

Setdate:
  _day = Makebcd(_day) : _month = Makebcd(_month) : _year = Makebcd(_year)
  I2cstart
  I2cwbyte Ds1307w
  I2cwbyte 4
  I2cwbyte _day
  I2cwbyte _month
  I2cwbyte _year
  I2cstop
Return

Settime:
  _sec = Makebcd(_sec) : _min = Makebcd(_min) : _hour = Makebcd(_hour)
  I2cstart
  I2cwbyte Ds1307w
  I2cwbyte 0
  I2cwbyte _sec
  I2cwbyte _min
  I2cwbyte _hour
  I2cstop
Return