Morse Code Reference
STATUS LED CODES
The orange Status LED can at times be used to convey information using Morse
Code. Most notably, after disconnecting the Ethernet LAN connection the JNIOR
will convey the last octet of its assigned IP address flashing each digit in
Morse Code.
An application can use the Java JANOS.morseStatusLED() method to output
and repeat any message in Morse Code. This potentially can convey a complex
error message in the absence of any display and remote access.
MORSE CODE
The following is the International Morse Code implemented by JNIOR. A
dot is indicated by the asterisk '*' and a dash by a series of dashes
'---'. The spaces between dots and dashes in the same letter are the same
length as a dot; The spaces between letters are equal to 3 dots; And, the
space between two words is equal to 7 dots. Phrases are repeated with a
space equal to 15 dots after the last.
Digits
1 * --- --- --- --- 6 --- * * * *
2 * * --- --- --- 7 --- --- * * *
3 * * * --- --- 8 --- --- --- * *
4 * * * * --- 9 --- --- --- --- *
5 * * * * * 0 --- --- --- --- ---
Letters
A * --- N --- *
B --- * * * O --- --- ---
C --- * --- * P * --- --- *
D --- * * Q --- --- * ---
E * R * --- *
F * * --- * S * * *
G --- --- * T ---
H * * * * U * * ---
I * * V * * * ---
J * --- --- --- W * --- ---
K --- * --- X --- * * ---
L * --- * * Y --- * --- ---
M --- --- Z --- --- * *
NOTES
Note the pattern used with digits. This is easily remembered and can help
make the IP octet decoding useful.
The length of code to represent letters is based roughly on the frequency of
the occurrence of letters in English text. As such the E is a single dot and
the letter T a single dash.
The status LED on the back of the Control Panel PCB also uses Morse Code.
SEE ALSO
HELP Topics:
NETWORK_ACCESS
[/flash/manpages/reference.hlp:625]