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Hello, I have a AT89C5131 development kit and I want do disable the WDTCN (watchdog timer) but in the list of the registers in the file "at89c5131.h" it looks like there are two registers: Sfr ( WDTRST, 0xA6 ) ; Sfr ( WDTPRG, 0xA7 ) ;
What do I need to do in order to Disable the watchdog timer.
Thanks!
Specifically, the section titled, "Hardware Watchdog Timer"
"I would be glad if you stop trying to fight me."
I fight you because you seem so totally uninterested in what I'm trying to say.
I asked you if you had verified that you had the correct datasheet. You answered with a "of course" about the header file - so no response about the datasheet. That lost you time.
When you finally had the correct datasheet (you never told us what datasheet had only one register and with a different name) I asked you if you had read the first section about the watchdog - it contained all you needed to know: that you can't stop an already started watchdog without resetting the chip. That lost you time.
It also explained that the chip boots with the watchdog off - so no need to stop a watchdog that has never been started.
It is common that a watchdog has no means to disable - a broken program must not accidentaly find any sequence that turns off the WD protection.
If you want any progress, you really have to start reading the datasheet information. Ask if you don't understand some text, but don't expect others to read the datasheet for you. 5 minutes reading the WD chapter and you would have saved a huge amount of time. But maybe you are in a hurry and doesn't have the time to save some time...
any good watchdog can not be disabled once it is enabled.
were that possible, a "wild write" could disable the watchdog, which would defeat the purpose of having one.
Erik
I have never witnessed the problem before.
Again, what "problem" are you talking about?
Or is it just that you turn a blind eye to all problems...?
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This delicious and easy Chocolate Cake Recipe comes from the recipe collection of a friend's mother.
But what I mean by this, is that the cake looks and tastes perfect and has that melting, smooth lightness - immensely chocolately but far from rich. The fact that it is scarcely harder than making one out of cake-mix (only worlds better) is an added joy. The recipe itself is an evolved version of a couple of cakes I've done before, and although the amounts and ingredients are slightly fiddled with, the real change
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, and an improvement in terms of ease, is that it can be made, all in one, in the processor.