The PIC does not start its program.


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  1. #1
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    Quote Originally Posted by Ted's View Post
    Not right now, skimask.
    The issue is that the pic is not even starting its programme.
    I want to give you more information. When voltage is being applied to the circuitry, these levels are given on the pic's socket:
    RA3 = Undefined, Floating
    RA4,RA5,RB2,Vdd,RB5 = 5.01 Volts
    RA7,RA7 = OSC
    That's EXACTLY the issue. If you break it down into it's simplest form, you can probe around, put parts in, pull parts out, play around, without worrying about anything.
    And again, YOUR program only execute ONE TIME. Are you going to sit there and keep pressing RESET while you mess around trying to probe?

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    Do you recommend soldering on a running system?

    To me it is about what is given the first time when voltage is being applied. Or will it work if I replace the quarz while there is already voltage applied to vdd and vss? I doubt so.
    Last edited by Ted's; - 26th July 2008 at 23:42.

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    Quote Originally Posted by Ted's View Post
    Do you recommend soldering on a running system?
    If it's only 5v and you've only got a PIC, an LED, a resistor, and the rest of the glue that goes with, sure...why not?

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    It is not. Just look at the voltage levels being applied. There need to be outside devices which apply the voltage to the pic.

    skimask, the main issue is that the device is not starting. I want to solely focus on that.

    I know four main error sources: The pic's hardware, the pic's software, the quarz and voltage applied to vdd and vss.

    Right now I suspect the quarz to be faulty.
    Last edited by Ted's; - 26th July 2008 at 23:47.

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    Quote Originally Posted by Ted's View Post
    It is not. Just look at the voltage levels being applied. There need to be outside devices which apply the voltage to the pic.
    skimask, the main issue is that the device is not starting. I want to solely focus on that.
    I know four main error sources: The pic's hardware, the pic's software, the quarz and voltage applied to vdd and vss.
    Right now I suspect the quarz to be faulty.
    Ok, fine. Let us know what you did to troubleshoot the problem and what you did to fix it.

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    I replaced the quarz -> No change.

    I saw some soldering issues, fixed them and connected some solder points with others having the same potential via wire to make sure that there are no facers. I measured using my multimeter and the connection was there. I switched on and again, nothing.

    For other measurements refer to my previous posts in this thread.

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    Some photos of the setup. Quarz currently removed.
    Attached Images Attached Images     
    Last edited by Ted's; - 27th July 2008 at 08:07.

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