Forgot subsystem linking in the robotcontainer

src/main/java/frc/robot/RobotContainer.java

@@ -7,6 +7,8 @@
 import edu.wpi.first.wpilibj2.command.Command;
 import edu.wpi.first.wpilibj2.command.button.CommandXboxController;
 import edu.wpi.first.wpilibj2.command.button.Trigger;
+import frc.robot.commands.*;
+import frc.robot.subsystems.*;
 
 /**
  * This class is where the bulk of the robot should be declared. Since Command-based is a
@@ -16,13 +18,21 @@
  */
 public class RobotContainer {
   // The robot's subsystems and commands are defined here...
+  private static final RobotContainer m_robotContainer = new RobotContainer();
+
+  public final Drivetrain m_drivetrain = new Drivetrain();
+  public final Pneumatics m_pneumatics = new Pneumatics();
 
   // Replace with CommandPS4Controller or CommandJoystick if needed
 
   /** The container for the robot. Contains subsystems, OI devices, and commands. */
   public RobotContainer() {
     // Configure the trigger bindings
     configureBindings();
+
+    // Set default commands
+    m_drivetrain.setDefaultCommand(new Drive(m_drivetrain));
+    m_pneumatics.setDefaultCommand(new PistonControl(m_pneumatics));
   }
 
   /**