LiveWindow PDP CAN Timeout

[phurley]

Beta 4, newly imaged RIO, installed Phoenix library 5.11.1.0:

Without this line:

private PowerDistributionPanel pdp = new PowerDistributionPanel(10);

There are no errors in the log, add that line and the following error repeats:

Error at frc.robot.Main.main(Main.java:27): HAL: CAN Receive has Timed Out
edu.wpi.first.hal.PDPJNI.getPDPChannelCurrent(Native Method)
edu.wpi.first.wpilibj.PowerDistributionPanel.getCurrent(PowerDistributionPanel.java:66)
edu.wpi.first.wpilibj.PowerDistributionPanel.lambda$initSendable$0(PowerDistributionPanel.java:119)
edu.wpi.first.wpilibj.smartdashboard.SendableBuilderImpl.lambda$addDoubleProperty$3(SendableBuilderImpl.java:242)
edu.wpi.first.wpilibj.smartdashboard.SendableBuilderImpl.updateTable(SendableBuilderImpl.java:95)
edu.wpi.first.wpilibj.livewindow.LiveWindow.updateValues(LiveWindow.java:290)
edu.wpi.first.wpilibj.IterativeRobotBase.loopFunc(IterativeRobotBase.java:262)
edu.wpi.first.wpilibj.TimedRobot.startCompetition(TimedRobot.java:81)
edu.wpi.first.wpilibj.RobotBase.startRobot(RobotBase.java:261)
frc.robot.Main.main(Main.java:27)`

Confirmed using Phoenix Tuner (PDP on Channel 10):

Channel  0 (A):     0.00
Channel  1 (A):     0.00
Channel  2 (A):     0.00
Channel  3 (A):     0.00
Channel  4 (A):     0.00
Channel  5 (A):     0.00
Channel  6 (A):     0.00
Channel  7 (A):     0.00
Channel  8 (A):     0.00
Channel  9 (A):     0.00
Channel 10 (A):     0.00
Channel 11 (A):     0.00
Channel 12 (A):     0.00
Channel 13 (A):     0.00
Channel 14 (A):     0.00
Channel 15 (A):     0.00
Battery(V) :   12.89
   Temp(C) :   19.90
FaultHardwareStatus : 0
Current FAULTS : 0000000000000000
FaultTemp : 0
FaultVbat : 0
Current FAULTS : 0000000000000000    (sticky)    
StickyFaultTemp : 0
StickyFaultVbat : 0

"Light Device LED" to clear sticky faults.

Build:Dec 16 2018 22:56:03
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[ozrien]

I claim this is fixed in https://github.com/wpilibsuite/allwpilib/pull/1496.

Workaround is to disable live window for PDP.

Unrelated but... did you really change the device ID to '10'? Its not a problem or anything, and its good for testing. Just curious if there was a reason. Sometimes I think about what multiple PDPs on a robot would achieve (more channels, more batteries, etc.)

[PeterJohnson]

Should also be fixed by #1497.

[phurley]

We always put the PDP at channel 10, our drive motors start at 1. No idea why, PCM is at 11 too -- who knows.

[PeterJohnson]

Fixed by #1497.