Pic programming help, (be gentle)

Dec 16, 2015 7 Replies
G

Hi all, First off I know nothing about programming pics, so please be gentle. I took over this project that has a pic (P16F886 if that matters.) I've programmed a bunch of these previously... following a cook book recipe that I wrote down. Now it's not working and I'm stuck.



I'm working in a with a MPLAB ICD2. There is a project file that I open



*.mcp. And then I click a few buttons and it's done. The problem I see now is that when I start this the checksum is not the right number.

So some silly questions, What is the checksum, and does the wrong number mean I need to recompile the program? Or something else.



Help! TIA George H.


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G

OK never mind... I "rebuilt" the whole thing and it seems to be happy now. (Grumble, I hate the feeling of not knowing what I'm doing.)

George H.

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M

For production I just use the hex file. You can open MPLAB, select the programmer(ICD2), Select the device, then File->Import the HEX File, then program.

That way there is no chance the code can be changed and it's stored in a safe place.

Cheers

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G

Huh, OK that worked too. What's weird is the only hex file in the development space is the one I just created with my "build all" command. (I saved the file with a different name before building.. not knowing what I'm doing I save early and often.)

Thanks George H.

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M

Somewhere on the Microchip website there is a standalone programming environment (IPE). So you don't mess with projects etc. But I think it's only MPLAB X.

Cheers

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K

We used MPLAB X (upgraded) in an earlier job. It was very buggy, so we reverted back

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M

I still use 8.84. It produces repeatable results, which is a good thing.

The IPE is part of X, unfortunatly.

Cheers

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L

You *can* have both, but you end up with things like the "driver switcher".

Les Cargill
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