'you need to disable the timer int before using the 1wire functions, and enable it afterwards.
'i2c can be used with interrupts. But 1wire uses timed loops for the delays and the interrupt will slown them down.
'Mark

'  Primer branja temperature, kadar je samo en senzor na 1wire-bus-u
$regfile = "m8515.dat"
'$regfile = "m16def.dat"
'$regfile = "attiny2313.dat"
$crystal = 11059200

Config 1wire = Portb.7                                      'kje se nahaja naš senzor


Config Lcd = 16 * 2
'Config Lcdpin = Pin , Db7 = Portc.7 , Db6 = Portc.6 , Db5 = Portc.5 , Db4 = Portc.4 , E = Portc.2 , Rs = Portc.1       'Config Lcdpin = Pin , Db7 = PortB.7 , Db6 = PortB.6 , Db5 = PortB.5 , Db4 = PortB.4 , E = PortB.3 , Rs = PortB.2
'Config Lcdpin = Pin , Db7 = PortB.7 , Db6 = PortB.6 , Db5 = PortB.5 , Db4 = PortB.4 , E = PortB.3 , Rs = PortB.2
Config Lcdpin = Pin , Db7 = Portd.7 , Db6 = Portd.6 , Db5 = Portd.5 , Db4 = Portd.4 , E = Portd.2 , Rs = Portd.1



Const Timer1reload = 10800
Config Timer1 = Timer , Prescale = 1024
Load Timer1 , Timer1reload
On Ovf1 Timer1_isr
Enable Timer1
Start Timer1
Enable Interrupts
'Add your code here


Cls
Lcd "DS1820-2.bas"
Dim T As Integer
T = 0

Cursor Off Noblink                                          'kurzor ne utripa, je ugasnjen
Dim Sekundabit As Bit

Do
If Sekundabit = 1 Then

     Reset Sekundabit

     1wreset                                                'reset
     1wwrite &HCC                                           'skip ROM ne bo bral naslove
     1wwrite &HBE                                           'READ Scratchpad mk dobi programe od senzorja

     T = 1wread(2)
     1wreset
     T = T / 2
     Cls : Lcd "T =  " ; T ; "C "                           ' izpis temperature

     1wreset
     1wwrite &HCC                                           'skip ROM
     1wwrite &H44                                           'convert temperature


End If

' Tukaj lahko vgradimo vso ostalo logiko programa, ne da bi bila ovirana
' z wait ukazi...

Loop
End



Timer1_isr:                                                 'prekinitvena rutina
   Load Timer1 , Timer1reload
   Set Sekundabit
  Return