pr2_dashboard should report special case for no power board data (ros ticket #3519)

[ahendrix]

The power board on PRL isn't coming up. The power node is reporting data from "Power board 0".

{{{
header:
seq: 236
stamp: 1263340558336284000
frame_id:
name: Power board 0
serial_num: 0
input_voltage: 0.0
circuit_state: [0, 0, 0]
circuit_voltage: [0.0, 0.0, 0.0]
run_stop: False
wireless_stop: False
}}}

The dashboard agg or dashboard should report a power board 0 with a special case, like "No data". This is how the power node reports that it can't contact the power board.

Maybe it should be gray, and say "No data from power board" or "Can't contact power board".

trac data:

• Owner: wheeler
• Reporter: watts
• Reported at: Tue Jan 12 15:59:59 2010
• URL: https://code.ros.org/trac/wg-ros-pkg/ticket/3519

[ahendrix]

[jfaust] This is should be taken care of by the dashboard aggregator

[ahendrix]

[wheeler] Why is the power board publishing a message with bogus values in it?

[ahendrix]

[watts] We need to fix this at both ends:

• Power board shouldn't publish bogus values
• Dashboard or aggregator should realize there's no power board

Having the power board not come up is one of the more frequent problems on the robot. I'm giving this ticket to Rob, and I'm opening up another one to Curt and Tim to not publish this.

Maybe we should go blue, or have a tool tip warning that its stale.