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61
CE-HW-01/02 User Manual
Appendix B: Watchdog
1.5 Start Watchdog Description:
Step
Action
Description
RW Sample Code
Command
0
Wait IBF clear
x
1
Write 0x28 to
0x66
Send start watchdog
command
>o 0x66 0x28
2
Wait IBF clear
x
3
Write 0x01 to
0x62
>o 0x62 0x01
(check 0x03 output
on display)
4
Wait OBF set
x
5
Read 0x62 port
If setup successfully,
EC will return 0x01.
x
(check 0x01 output
on display)
1.6 Stop Watchdog Description:
Step
Action
Description
RW Sample Code
Command
0
Wait IBF clear
x
1
Write 0x29 to
0x66
Send stop watchdog
command
>o 0x66 0x29
2
Wait OBF set
x
3
Read 0x62 port
If setup successfully,
EC will return 0x02.
x
(check 0x02 output
on display)