Ds18b20

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  1. - 14th June 2009, 09:35 #1
    ahmed_salah's Avatar
    ahmed_salah
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    hi,
    can u please send me picbasic code so i can know where is the error cause i am not god in assembely
  2. - 14th June 2009, 09:50 #2
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    hi,
    i try the code u send me but still the same result nochange the resolution still 0.5
  3. - 14th June 2009, 13:01 #3
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    Talking

    Hi, Ahmed

    No surprise ... you do not write tte DS Config Word in the right registers ...

    our friend Fratello saw that ( and corrected it ... )

    a pair of zeros is missing in your command line ...

    Alain
    Last edited by Acetronics2; - 14th June 2009 at 13:03.
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************
  4. - 14th June 2009, 13:35 #4
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    hi,
    still the same resolution 0.5 even after i update the code , attached is the code u send me if u want to check
    Attached Files Attached Files
  5. - 14th June 2009, 14:24 #5
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    Question Where's the bug ???

    Hi, Ahmed

    I must admit Fratello's program only shows half degrees ... ( just tested on an EasyPic 5 )

    but still have not found Why !!!

    Alain
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************
  6. - 14th June 2009, 14:32 #6
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    hi,
    i am using pic basic pro 2.44 do u think this the problem
  7. - 14th June 2009, 15:00 #7
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    Wink

    Hi, Ahmed

    I Finally got it !!!

    the problem is in the Waiting loop ... that doesn't wait !!!

    sooo... add :

    Code:
     Busy VAR BIT
    at the top of the program

    and change :

    Code:
    WaitLoop:
 
' While not DQ                      ' NOT Working !!!
' Wend
    by

    Code:
    WaitLoop:

OWIn DQ, 4, [Busy] 			' Check for still busy converting

'PORTC.4 = 1				' Show waiting for conv complete

If Busy = 0 Then 

 GOTO waitloop
 
ENDIF

' PORTC.4 = 0
    Port C.4 was chosen to show the time the DS is Busy ... very useful tool to verify conversion is really complete !!!

    Have fun,

    Alain
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************
  8. - 14th June 2009, 14:58 #8
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    Quote Originally Posted by ahmed_salah View Post
    hi,
    can u please send me picbasic code so i can know where is the error cause i am not god in assembely
    complied code and also the corrected .asm are attached.
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