| Author | beginning argument ( Replies received: 2 ) |
| BrianM |
 Posted 13-06-2008 at 12:28 |
Registered on :
03-05-2003
From UK (United Kingdom)
Messages : 64
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Hi I am using and ST7 Flite Ultra 09
I am using "bset LTCSR,#WDGD" to reset the Watchdog in my main loop
This seems to be clearing the Interupt flag, does a "bset" command have the same affect as a read.
If so whats the solution to resetting the watchdog?
Re B
[ This message was edited by: BrianM on 13-06-2008 12:34 ]
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| BrianM |
Posted 23-09-2008 at 14:02 |
Registered on :
03-05-2003
From UK (United Kingdom)
Messages : 64
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Bump
Anybody help with this please....
Re Brian
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| EtaPhi |
Posted 24-09-2008 at 13:50 |
Registered on :
07-12-2004
From Italy
Messages : 182
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Brian,
BSET LTCSR,#WDGD is equal to the following instructions:
LD A,LTCSR
OR A,#$01
LD LTCSR,A
For this reason, the first instruction clears the Timebase Interrupt Flag.
The only way to delay the watchdog action without losing the Timebase Interrupt is:
LD A,#%10010011 ;enables Input Capture and Timebase Interrupts too
LD LTCSR,A
According to the datasheet, the Input Capture and Timebase flags should remain unchanged.
Regards
EtaPhi
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Ulta 09 LTCSR TBF being cleared