Status Codes
When first powered up, the NetClock will flash all LEDs, then show on the red 7-segments the version number.
If there are any problems during reset, the LED will show one of the following codes (x is any number)
01xx
Problems with flash EEPROM, eg
0123 EEPROM flash not working
0100 No flash EEPROM installed
02xx
Ethernet chip fault
03xx
RTC chip fault
After this, the NetClock will start its internal program and display progress codes.
These are displayed on the green 7-segment LEDs as
"-AB-"
Where:
A
is a number of single digit transaction progress codes (not added
together)
6
DHCP offer rcvd
7
DHCP request sent
8
DHCP ack rcvd
9
arp handled OK
A
ping handled OK
B
UDP rx
C
SNTP request sent
F
unspecified error
Blank
finished
B
is an addition of codes (add numbers together)
+1 If my IP is invalid (eg not yet DHCP allocated)
+2 If DHCP is in progress
+4 SNTP reply hasn't arrived yet
A typical start-up sequence when using DHCP is:
-07-
No IP Address, DHCP in progress, No SNTP reply
-84-
DHCP ACK rcvd, No SNTP reply
-64-
DHCP OFFER rcvd, No SNTP reply
-Correct operation,
Countdown timer displayed.
