DS1307 Ram

[AndrewB]

Am I correct that the DS1307 has ram that I can write to.
I would like to use it to save two variables.

How would I access this?

Thanks

[AndrewB]

Would it be

Code: Select all

DS1307.writebyte(8,variable or value) ' first byte
DS1307.writebyte(9,variable or value) ' second byte
DS1307.readbyte(8,variable or value)  ' first byte
DS1307.readbyte(9,variable or value)  ' second byte


[David John Barker]

I think this routine already offsets the address by RTC_NVRAM, see the WriteByte() and ReadByte() implementations by clicking on the DS1307 in the explorer window. Keep us informed of your progress...

[AndrewB]

Have it working...

Code: Select all

DS1307.Writebyte(&H08,14)
DS1307.Writebyte(&H09,50)
temp = DS1307.readbyte(&H08)
temp = DS1307.readbyte(&H09)


[David John Barker]

Great - don't forget though, the routines are automatically offset by RTC_NVRAM, so you can use

Code: Select all

' import modules...
Imports DS1307         

' main program entry point...
Sub Main()
   DS1307.WriteByte(0,10)
   DS1307.WriteByte(1,20)
   Console.Write("Addr(0) = ", cstr(DS1307.ReadByte(0)),13,10) 
   Console.Write("Addr(1) = ", cstr(DS1307.ReadByte(1)),13,10)
End Sub

[AndrewB]

Oh Ok thanks