UM0408
Troubleshooting
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Appendix D
Troubleshooting
D.1 Communication
error
A "Communication error" message may appear on the PC screen (as in
Figure 15
) for any of
the following reasons:
1.
Baud rate mismatch (set it to 4800), signaled by the red error LED glowing
2.
RS232 serial cable not connected or not connected properly
3.
Incorrect COM port selection (set it to correct setting based on the PC configuration)
4. Board
not
power-on
In all the above cases, the user needs to re-start the GUI.
5.
Red error LED glowing
For this case, when the Error LED (red) turns off, then the user needs to re-start the
GUI.
D.2 Time-out
error
The "Time-out error" (see
Figure 19
), is shown when the command issued by the user takes
longer to finish than expected by the system on the GUI side, though the operation is
completed on the board side. In this case, the user needs to re-start the GUI to get the real
system status.
Figure 19.
Time-out error
D.3 Delete
all
users
Deleting all users is a time-consuming process. To ensure that this is completed, after
receiving the OK prompt from the GUI (see
Figure 20
), make sure that the "Code in system
= 0" in the status bar. Wait a little longer if this has not been updated. As soon as the status
bar displays "Code in system = 0" the system is ready for next command (see
Figure 21
).
Note:
If any command is sent and the delete all users operation is not complete, system behavior
is not guaranteed.
Figure 20.
Delete all users - OK window
Figure 21.
Delete all users - Status bar
