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[wpilib] Add functional interface equivalents to MotorController (#6053)

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This does not deprecate any current functionality, but prepares the way for future deprecation.

The drive classes now accept void(double) functions, which makes them more flexible.

The C++ API ended up a bit more verbose, but the Java API is really concise with method references, which is >80% of our userbase. For example:

`DifferentialDrive drive = new DifferentialDrive(m_leftMotor::set, m_rightMotor::set);`

Lambdas can be passed to interoperate with vendor motor controller APIs that don't have e.g., set(double), so CTRE doesn't have to maintain their WPI_ classes anymore.

MotorControllerGroup was replaced with PWMMotorController.addFollower() for PWM motor controllers. Users of CAN motor controllers should use their vendor's follower functionality.
This commit is contained in:
Tyler Veness
2024-01-01 13:37:51 -08:00
committed by GitHub
parent 8aca706217
commit e7c9f27683
132 changed files with 1159 additions and 697 deletions
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9
wpilibcExamples/src/main/cpp/examples/DifferentialDriveBot/include/Drivetrain.h
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@@ -12,7 +12,6 @@
#include <frc/controller/SimpleMotorFeedforward.h>
#include <frc/kinematics/DifferentialDriveKinematics.h>
#include <frc/kinematics/DifferentialDriveOdometry.h>
#include <frc/motorcontrol/MotorControllerGroup.h>
#include <frc/motorcontrol/PWMSparkMax.h>
#include <units/angle.h>
#include <units/angular_velocity.h>
@@ -25,10 +24,13 @@
class Drivetrain {
public:
Drivetrain() {
m_leftLeader.AddFollower(m_leftFollower);
m_rightLeader.AddFollower(m_rightFollower);
// We need to invert one side of the drivetrain so that positive voltages
// result in both sides moving forward. Depending on how your robot's
// gearbox is constructed, you might have to invert the left side instead.
m_rightGroup.SetInverted(true);
m_rightLeader.SetInverted(true);
m_gyro.Reset();
// Set the distance per pulse for the drive encoders. We can simply use the
@@ -63,9 +65,6 @@ class Drivetrain {
frc::PWMSparkMax m_rightLeader{3};
frc::PWMSparkMax m_rightFollower{4};
frc::MotorControllerGroup m_leftGroup{m_leftLeader, m_leftFollower};
frc::MotorControllerGroup m_rightGroup{m_rightLeader, m_rightFollower};
frc::Encoder m_leftEncoder{0, 1};
frc::Encoder m_rightEncoder{2, 3};