[eagle] Re: Jim's Phase Noise Number!!
kc0ftq at amsat.org
Mon Jun 11 14:20:52 PDT 2007
> Please refresh me on the function of the watchdog timer.
While the dongle may be powered up, can traffic needs to be sent to
the Widget at least once every three seconds or the watchdog will fire.
This watchdog is here to account for a number of possible system
issues. Some of them are (1) CAN-Do is not hearing IHU CAN
traffic so it assumes it is not well and resets or (2) the CAN Do for
some reason locks up and can't receive CAN traffic in which case,
again, it resets.
The only CAN traffic that resets the watchdog timer is 'configure'
messages (Heartbeat traffic in CDNC terms). So set the heartbeat
rate for something shorter than 3 seconds and you will not see any
This description help?
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