For testing on the bench of separate modules, it is fine to use your own user accounts for running the watchdog or your application directly. To test many programs running together under the watchdog, we should run the watchdog as the vehicle user. This ensures that the right permissions are given to the programs running and makes syncing of binaries on separate machines more convenient. The vehicle user is present on all the machines that will be on the vehicle (gcrear0, gcrear1, gcchassis).
The password for the vehicle user is "vehicle".
The vehicle user home directory, /home/vehicle/ on the vehicle machines (gcrear0, gcrear1 and gcchassis) will contain the bin directory where
binaries are found. For clarity, it is recommended that the bin directory only contains binaries that are meant to run on that machine. The /home/vehicle/ directory on gcrear1 (the computer designated to run the watchdog) will contain 2 more directories startfiles and text. The startfiles directory will contain all the startfiles for the different modes of testing and operation. The text directory will contain the logs that are "tee"ed off the stdout and stderr output of the watchdog program. Look in there to look for the printing outputs of your programs.
For field testing, there is a monitor and wireless keyboard (with roll ball) connected to gcrear1. Sshd is running on gcchassis, gcrear0 and gcrear1 and you should be able to ssh to each of the machines if you need to. Note that gcchassis only has root and vehicle user accounts set up. Avoid using the root account on gcchassis. Use the vehicle user account if you need to ssh in.
The wireless 802.11b bridge will be present on the vehicle for testing. The wireless bridge makes the whole vehicle network (industrial hub + gcrear0 + gcrear1 + gcchassis) appear on the wired network in the workshop transparently. If the vehicle is in range of the workshop, the machines in workshop should be able to talk to the vehicle machines. With line of sight, this should be about 100m. Without line of sight, it will be 20 to 30m. Whether in range or out of range, the vehicle machines would be able to talk to each other.
Step by Step for Field Development