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Om1p "watchdog" And Reboots


csystem
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Just a FYI, I was playing with a newly arrived OM1P (same board as the AP51) and noticed this in Redboot:

RedBoot> bdshow
name:     MR3201P-FLF-38NQ
magic:    35333131
cksum:    5a13
rev:      5
major:    1
minor:    0
pciid:    0013
wlan0:    yes 00:12:cf:d6:20:17
wlan1:    no  ff:ff:ff:ff:ff:ff
enet0:    yes 00:12:cf:d6:20:16
enet1:    no  ff:ff:ff:ff:ff:ff
localbus: no  ff:ff:ff:ff:ff:ff
PCI:      no  ff:ff:ff:ff:ff:ff
uart0:    yes
sysled:   yes, gpio 2
factory:  yes, gpio 6
serclk:   internal
cpufreq:  configured 184000000 Hz
sysfreq:  configured 92000000 Hz
memcap:   disabled
watchdg:  disabled (WARNING: for debugging only!)

serialNo:           
RedBoot> 

RedBoot> version

RedBoot(tm) bootstrap and debug environment [ROMRAM]
Accton release, version v1.5.1 - built 20:10:40, Aug 19 2008

Copyright (C) 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.

Board: ap51 
RAM: 0x80000000-0x82000000, [0x8003f640-0x80fe1000] available
FLASH: 0xa8000000 - 0xa87f0000, 128 blocks of 0x00010000 bytes each.
RedBoot> 

Apparently the watchdog can be disabled, mine was when I bought it, probably is by default in the Alfa ap51's. Curious on why this OM1P had it disabled, but pleasantly surprised.

These Redboot commands were run before flashing, but I think the setting is stored in NVRAM anyway.

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Either way, the heartbeat is built into the current firmware so a watchdog chip is not an issue for us at the moment.

That was an odd thing to crack though, as I wanted to be able to permanently remove it. It isn't easily possible to change the watchdog Boolean, either you are lucky or they now ship OM1Ps with disabled watchdogs.

Seems unlikely though as it is actually a great feature for mesh networks.

Thanks for the tip though, I will take a closer look at it.

Best,

Sebkinne

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