With a simple program trying to control a Hitech servo, the program compiles and deploys properly, but does not run correctly on the Pi.
Program:
public class PWMServo extends TimedRobot {
Servo servo;
int time;
@Override
public void robotInit() {
servo = new Servo(0);
}
@Override
public void teleopPeriodic() {
if (servo.get() < 0.05) {
servo.set(1);
}
else if (servo.get() < 0.95) {
servo.set(0);
}
}
}
Error presented in /var/local/kauailabs/logs/FRC_UserProgram.log
** Robot program starting **
Error at frc.robot.PWMServo.robotInit(PWMServo.java:32): Unhandled exception: edu.wpi.first.hal.util.UncleanStatusException: Code: -20021. Only a single Channel Capability is allowed
at edu.wpi.first.hal.PWMJNI.setPWMPeriodScale(Native Method)
at edu.wpi.first.wpilibj.PWM.setPeriodMultiplier(PWM.java:291)
at edu.wpi.first.wpilibj.Servo.(Servo.java:39)
at frc.robot.PWMServo.robotInit(PWMServo.java:32)
at edu.wpi.first.wpilibj.TimedRobot.startCompetition(TimedRobot.java:63)
at edu.wpi.first.wpilibj.RobotBase.startRobot(RobotBase.java:263)
at frc.robot.Main.main(Main.java:27)
Warning at edu.wpi.first.wpilibj.RobotBase.startRobot(RobotBase.java:274): Robots should not quit, but yours did!
Error at edu.wpi.first.wpilibj.RobotBase.startRobot(RobotBase.java:276): The startCompetition() method (or methods called by it) should have handled the exception above.
With a simple program trying to control a Hitech servo, the program compiles and deploys properly, but does not run correctly on the Pi.
Program:
Error presented in /var/local/kauailabs/logs/FRC_UserProgram.log