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How can I use the watchdog
Posted: Mon Sep 29, 2008 8:14 pm
by P_T
I would like the Watchdog to use the 16F877A.
My preference is for a software version .
Has someone an example or a link.
Re: How can I use the watchdog
Posted: Tue Sep 30, 2008 10:35 am
by Benj
Hello
Basically all you have to do to use the watchdog is the following.
1) Enable the watchdog using the Chip -> Configure screen.
2) In your main program loop add the following line into a C code icon: clr_wdt();
3) Any further modification eg the watchdog timeout and prescaler etc can be found in the device datasheet and modified by using C code to control the option_reg prescaler register.
eg: option_reg = 0x00;