RE: [ts-7000] Re: TS-7800 External Watchdog Timer

[Alex Kulinchenko <>]

Charlie,

 

OK, now I am even more confused.

 

Here is the example from TS web-site:

 

.....

*wdt_feed = 0x05;

*wdt_control = 0x07;

 

while (1)

{

    *wdt_feed = 0x05;

     sleep(5);

}

...

 

According to TS-7260 manual:

"The WDT control register must be initialized with the timeout period desired".

So, we are setting wdt_control to 0x07. which is 8 sec (not 2).

 

Then the TS-7260 manual states:

"In order to clear the WDT counter (feeding the watchdog), a value of Hex 05 must be written to the WDT Feed register".

It sounds like 0x05 is the only choice for WDT feed and this WDT feed value does not correspond to 2 sec. 

 

If I understood the example and manual correctly, the example application sets timeout to 8 sec and then feeds WDT timer every 5 sec, so it should never cause the reboot.

 

Did I misunderstood the instructions in the manual?

 

 

 

 

-----Original Message-----
From: [On Behalf Of charliem_1216
Sent: Friday, May 01, 2009 11:06 AM
To:
Subject: [ts-7000] Re: TS-7800 External Watchdog Timer

--- In .com, Alex Kulinchenko <> wrote:
>
> Charlie,
>
> Thanks for quick reply. The system is running 2.4 TS kernel. I am using
> external TS WDT as recommended by TS-7260 manual.
> I used the wdt2.c code as example (I basically did copy / paste for the
> code).

Well, there it is then. The code, as-is on the web site, is set to demo the WDT triggering: it sets the feed to 0x05 (ie 2 seconds), then does a sleep(5), which is longer than 2, so it is working as designed.

regards, ........ Charlie

>
> The link that you provided is for 2.6 kernel. How can I check if I have
> driver for ts7260-wdt enabled and ep93xx-wdt disabled in 2.4 kernel?
>
> - Alex
>
>

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