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Related

One Wire temp Question

Former Member
Former Member over 12 years ago

Hey all, im new to arduino, excited and ready to get roaing into my projects, but im a little stuck at the moment.

 

Using the dallas temp sensors ds18b20, i want to display the output on an lcd screen, which seems fine however i dont want for example :

 

35.xx , i only require the main temp 35 not requiring the display of the decimal point, is there any way for me to configure this ?

 

please keep in mind im pretty new to all the code, so im trying to get my head around that.

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  • Robert Peter Oakes
    Robert Peter Oakes over 10 years ago +1
    as a simple measure without getting into casts etc, use the printf function or sprintf found in STDIO.H or printf.h printf("'%.2f'", 10.3456); // prints to two decimal places (10.35) printf("'%.0f'", 10…
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  • mconners
    mconners over 12 years ago

    I'd really have to see your code to know exactly what you are doing, but from the description, you could just cast the double/float or whatever to an int to get just the integral part of the temp reading. I'm sure if you posted the code you could get a better response.

     

    Mike

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  • billpenner
    billpenner over 10 years ago in reply to mconners

    In in your reply to Michael Conners. Please explain what " cast the double/float " means and how to do it. I am trying to learn and this will help me in a project.

    Thanks,

    Bill

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  • gadget.iom
    gadget.iom over 10 years ago in reply to billpenner

    Hi billpenner.

     

    This page should clarify the cast operator for you: Arduino - Cast

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  • gadget.iom
    gadget.iom over 10 years ago in reply to billpenner

    Hi billpenner.

     

    This page should clarify the cast operator for you: Arduino - Cast

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  • billpenner
    billpenner over 10 years ago in reply to gadget.iom

    I see. It looks like a cast is a translation from one type to another.

    Thanks

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