Embedded Strings in your Code Space


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  1. #1
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    and when you use HSEROUT ["HELLO"] it works or not?
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.

  2. #2
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    Question

    Using pin 25 RC6/TX and monitoring with MCS serial communicator at 9600 baud I get a repeating string of garbage characters. Hserout ["hello"] test result was the same. Isn't there an issue with hserout and inverted output?

    In the mean time playing around I found this code works:


    StringOut: ' Send the string out via serout
    Readcode Addr, TwoChars ' Get the 14 bit packed characters
    Char = TwoChars >> 7 ' Separate first char
    if Char = 0 then StringDone ' Look for Null char, Stop if found
    Gosub Out ' Send first char
    Char = TwoChars & $7F ' Separate second char


    if Char = 0 then StringDone ' Look for Null char, Stop if found
    Gosub out ' Send the second char
    Addr = Addr + 1 ' Point to next two characters

    Goto StringOut ' Continue with rest of the string

    StringDone:
    Return

    out:
    Serout PORTE.1,N2400,[char]:Return
    end

    I'm trying to find a way to select ASCI character tag pairs based on a numerical index something like my flawed example below.

    Lookup index,["A1","A2","A3","A4","B1","B2","B3","B4"....... ..],#tag

    I can use codespace strings if there is no simpler way to go.
    Last edited by Homerclese; - 9th March 2007 at 20:02.
    Thanks,
    Homerclese

  3. #3
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    Isn't there an issue with hserout and inverted output?
    Yes. HSEROUT & HSERIN work with non-inverted data. There is no way
    to force inverted when using the hardware USART without an external
    inverter.
    Regards,

    -Bruce
    tech at rentron.com
    http://www.rentron.com

  4. #4
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    This was a new one on me. I was trying to work DT’s "STRINGS.PBP" code for the first time and ran across an error from MPASM, the likes of which I had never seen before.

    “The Microchip assembler (MPASM) only allows up to 62 characters for path and file name. Current length is 72 characters”

    AHHHH ??Now, I am not 100% efficient on doing a forum search, but I could not find anything like this. Stumped big time and no where to go.

    Contacted the author and low and behold I had my code buried 5 levels deep into subdirectories on my C:\ drive. Each subdirectory had long names, hence 72 characters by the time I got to the directory where I placed my "STRINGS.PBP" code. Changed the subdirectory names to shorter lengths and bingo, works fine. Even though all my projects have worked fine over the years, one needs to think how and where they store their projects,

    Thought I would share this little “tidbit” just incase someone else runs into it.

  5. #5
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    Quote Originally Posted by DavidK View Post
    “The Microchip assembler (MPASM) only allows up to 62 characters for path and file name. Current length is 72 characters”
    You aren't the 1st one to get bitten by that one. That used to bite me every once in awhile for no particular reason...and would stump me for literally hours each time.
    To cure it, awhile back I started a completely separate partition just for MPLAB, PBP, MCS, PICKIT2, all my programming stuff and keep it all in the root directory.
    Even if I do have to type something out at the command line, the line ends up being relatively short. Not to mention, I can 'dynamically' adjust the partition size with Partition Magic since the partition is so small. And I backup the whole thing at PC startup with a simple ZIP batch file straight to a thumbdrive. Practically bullet proof...and transportable...

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