16F88 internal clock configuration

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  1. - 7th March 2005, 21:41 #1
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    reason is simple... you run out of memory...

    PIC16F876 : 8K
    PIC16F88: 4K
    YourCode :4287 words

    so you can for sure shrink it using internal or external EEPROM instead of arrays and few other things. It has to fit in a 4k memory space
    Steve

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    There's no problem, only learning opportunities.
  2. - 8th March 2005, 04:58 #2
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    Red face

    ...wow, that easy huh? Well, I removed some of the code, and it does run much better, indeed!! I still see some odd behavior however:

    1. The voltage calculation is inaccurate
    2. The 'initialize' subroutine does not fire, or only partially fires
    3. The N, S, E, W Select Case does not appear to be working as the values are missing in the output
    4. The Select Case routine for the lock flag (which is 1,2, or 3. is showing an ERROR - or something besides these values.

    The other calculations look right...

    I think all this may be convincing me not to try to port over, as this program runs really well on the other chip... arghhh
  3. - 8th March 2005, 05:18 #3
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    Post your new code here to see wha can it should be.
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.
  4. - 8th March 2005, 05:47 #4
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    Here it is..

    It won't do much unless you have this particular type of GPS that outputs the wierd data.. I captured some as a text file(which it is not).

    Attached is a zip file with

    1. shorter program files (Less the LST - it was too big)
    2. the 16F88 include file I use

    TG
    Attached Files Attached Files
  5. - 8th March 2005, 07:51 #5
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    probably i'm getting older and need to sleep after only 22 hours awake but, i can't see why it's not working. I really suspect an hardware problem now. 0.1 uF ceramic Capacitor close to the PIC.

    i didn't get any compile error with the select case stuff.

    did you install the PBP patch for the F88???

    Here's the patch

    about the calculation what about if you skip the hexa to decimal and do like Bruce propose few post ago!!!
    Steve

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    There's no problem, only learning opportunities.
  6. - 8th March 2005, 08:03 #6
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    Thanks.. I'll try the patch and see what happens. Is the CAP from Gnd - + close to the V+ pin? I have nothing there.

    What post about skipping the Hex conv? I don't see that post in this thread.

    TG
  7. - 8th March 2005, 08:10 #7
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    Odd.. that patch does not work for me. It says the 16F88 file is an "unknown version"...
  8. - 8th March 2005, 08:19 #8
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    Quote Originally Posted by Tom Gonser
    What post about skipping the Hex conv? I don't see that post in this thread.

    TG
    i thought it was on this post... sorry

    there you go
    Steve

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