Squashed 'third_party/allwpilib_2019/' content from commit bd05dfa1c
Change-Id: I2b1c2250cdb9b055133780c33593292098c375b7
git-subtree-dir: third_party/allwpilib_2019
git-subtree-split: bd05dfa1c7cca74c4fac451e7b9d6a37e7b53447
diff --git a/wpilibc/src/main/native/cpp/PIDController.cpp b/wpilibc/src/main/native/cpp/PIDController.cpp
new file mode 100644
index 0000000..b1c51c6
--- /dev/null
+++ b/wpilibc/src/main/native/cpp/PIDController.cpp
@@ -0,0 +1,85 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2008-2018 FIRST. All Rights Reserved. */
+/* Open Source Software - may be modified and shared by FRC teams. The code */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project. */
+/*----------------------------------------------------------------------------*/
+
+#include "frc/PIDController.h"
+
+#include "frc/Notifier.h"
+#include "frc/PIDOutput.h"
+#include "frc/smartdashboard/SendableBuilder.h"
+
+using namespace frc;
+
+PIDController::PIDController(double Kp, double Ki, double Kd, PIDSource* source,
+ PIDOutput* output, double period)
+ : PIDController(Kp, Ki, Kd, 0.0, *source, *output, period) {}
+
+PIDController::PIDController(double Kp, double Ki, double Kd, double Kf,
+ PIDSource* source, PIDOutput* output,
+ double period)
+ : PIDController(Kp, Ki, Kd, Kf, *source, *output, period) {}
+
+PIDController::PIDController(double Kp, double Ki, double Kd, PIDSource& source,
+ PIDOutput& output, double period)
+ : PIDController(Kp, Ki, Kd, 0.0, source, output, period) {}
+
+PIDController::PIDController(double Kp, double Ki, double Kd, double Kf,
+ PIDSource& source, PIDOutput& output,
+ double period)
+ : PIDBase(Kp, Ki, Kd, Kf, source, output) {
+ m_controlLoop = std::make_unique<Notifier>(&PIDController::Calculate, this);
+ m_controlLoop->StartPeriodic(period);
+}
+
+PIDController::~PIDController() {
+ // Forcefully stopping the notifier so the callback can successfully run.
+ m_controlLoop->Stop();
+}
+
+void PIDController::Enable() {
+ {
+ std::lock_guard<wpi::mutex> lock(m_thisMutex);
+ m_enabled = true;
+ }
+}
+
+void PIDController::Disable() {
+ {
+ // Ensures m_enabled modification and PIDWrite() call occur atomically
+ std::lock_guard<wpi::mutex> pidWriteLock(m_pidWriteMutex);
+ {
+ std::lock_guard<wpi::mutex> mainLock(m_thisMutex);
+ m_enabled = false;
+ }
+
+ m_pidOutput->PIDWrite(0);
+ }
+}
+
+void PIDController::SetEnabled(bool enable) {
+ if (enable) {
+ Enable();
+ } else {
+ Disable();
+ }
+}
+
+bool PIDController::IsEnabled() const {
+ std::lock_guard<wpi::mutex> lock(m_thisMutex);
+ return m_enabled;
+}
+
+void PIDController::Reset() {
+ Disable();
+
+ PIDBase::Reset();
+}
+
+void PIDController::InitSendable(SendableBuilder& builder) {
+ PIDBase::InitSendable(builder);
+ builder.AddBooleanProperty("enabled", [=]() { return IsEnabled(); },
+ [=](bool value) { SetEnabled(value); });
+}