Please help with code for DS18B20

[Archangel]

it is strange because most of the times PICs can directly drive loads until 100mA. . . .

Ok I took this comment out of context . . . 100 ma if all port pins have a load on them distributed across the entire port . . . 25ma max on a single output pin. . . unless I misread the data sheets.

[astanapane]

Fratello,

i have changed your code a little bit, only a very simple thing in order to have two outputs.

instead of this

If V < TargetTemp - Hyst then ' Below Target temperature - Hysteresis
PORTA.2=1 ' Activate Warm Output
PORTA.3=0 ' Deactivate Cold Output
EndIf

If V > TargetTemp + Hyst then ' Above Target temperature + Hysteresis
PORTA.2=0 ' Deactivate Warm output
PORTA.3=1 ' Activate Cold Output
EndIf

i used this

If V < TargetTemp - Hyst then ' Below Target temperature - Hysteresis
PORTA.2=1 ' Activate Warm Output

EndIf

If V > TargetTemp + Hyst then ' Above Target temperature + Hysteresis
PORTA.2=0 ' Deactivate Warm output
EndIf

If V2 < TargetTemp - Hyst then ' Below Target temperature - Hysteresis
PORTA.3=0 ' Deactivate Cold Output
EndIf

If V2 > TargetTemp + Hyst then ' Above Target temperature + Hysteresis
PORTA.3=1 ' Activate Cold Output
EndIf

and now i have two outputs. Very simple change but useful.

Regards,

[Ioannis]

I used to manipulate the ports directly, but once I had a problem and suspicion have fallen on the technique among other things.

So, I now only use HIGH and LOW commands even if these eat a little program memory just to be sure.

If your code is small enough to fit in one page then you probably can use direct port control.

Ioannis