Company Confidential
27
Raveon Technologies Corp.
Action
TFTP
initiated
Connected to
server and
downloading
Successful
TFTP
download
Download
failure
(Telnet
session
active)
GPS
Orange
Orange
Orange
Red
STAT
Off
Orange
Orange
Orange
PWR
Off
Off
Orange
Green
Figure 1: LED status colors
9.3. Error - Bootloader Telnet Command-Line Interface (CLI)
If there is a problem with a TFTP transfer (can’t find server, can’t find filename,
etc.) the three LEDs will light as described above and a Telnet server is started
(with static IP 192.168.26.4). The user can then use any standard Telnet terminal
program to access this server at 192.168.26.4. In order to see what is typed on the
user side, local echo must be enabled in
the Telnet terminal program; it’s not
necessary but makes the process a little easier. After initiating this Telnet session,
the user should see the following screen: