RE: Re: [jallib] Re: WDT

Ptr Tue, 03 Dec 2019 11:59:32 -0800

Hi Rob

I already looked in the library and understood 0x1 = enabled.

I did not understand

pragma fuse_def WDT:3 0x1

but that’s less important because I then knew how to handle.

Kind regards,

Peter

Van: Rob CJ
Verzonden: maandag 2 december 2019 19:11
Aan: jallib
Onderwerp: Re: [jallib] Re: WDT

Hi Peter,

That is not completely correct. The pragma is not always the same for every PIC. I you look at the blink sample you find:

pragma target WDT CONTROL -- watchdog

That is because the options given in the device file 16f4455 for WDT are:

pragma fuse_def WDT:3 0x1 { -- Watchdog Timer Enable bit

ENABLED = 0x1 -- WDT enabled

CONTROL = 0x0 -- WDT disabled (control is placed on the SWDTEN bit)

}

So you have to check the device file if you really want to know which settings to use for which pragma (and what the default is, in this case 0x1 so ENABLED) or you can have a look at the blink sample for your PIC, that is often the easiest way to get the right pragmas for your application.

Kind regards,

Rob

Van: [email protected] <[email protected]> namens Zet Weeh <[email protected]>
Verzonden: maandag 2 december 2019 11:43
Aan: jallib <[email protected]>
Onderwerp: [jallib] Re: WDT

Op zondag 1 december 2019 07:57:59 UTC+1 schreef Zet Weeh:

LS

I can't find the difference between:

'WDTCON_SWDTEN = off' and 'pragma target WDT control'.

I searched on Internet but I could not find the answer.
I hope someone will explain.

Kind regards
Peter

Wauw, I got a lot of answers also by mail and some with examples.

I learned a lot about WDT.

I understood that 'pragma target WDT Disabled ' gives an error because it's already standard in tthe PIC-lib 18F4455 I use.

Thanks for your help.

Peter

Heiloo

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RE: Re: [jallib] Re: WDT

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