Verifying SmartDashboard is working
Minimal Java robot program
Minimal C++ robot program
SmartDashboard output for the sample program
Verifying the IP address in SmartDashboard
Using TableViewer to verify that the program is working
You can verify that the robot program is generating SmartDashboard values by using the TableViewer program. This is a java program, TableViewer.jar that is located in the sunspotfrcsdk/tools folder for NetBeans installations or in C:\WindRiver\WPILib folder for Workbench installations. It is run with the command: java -jar TableViewer-r355.jar. The version number in your installation might be different.
Look at the second row in the table, the value "SmartDashboard/Counter" is the variable written to the SmartDashboard via NetworkTables. As the program runs you should see the value increasing (44.0 in this case) and the sequence number also increasing (648 in this case). The sequence number is incremented as new values are written and is a way of keeping multiple clients and server in sync. If you don't see this variable in the TableViewer then you should look for something wrong with the robot program or the network configuration.