Rename our allwpilib (which is now 2020) to not have 2019 in the name

Change-Id: I3c07f85ed32ab8b97db765a9b43f2a6ce7da964a
diff --git a/wpilibc/src/main/native/cpp/AnalogOutput.cpp b/wpilibc/src/main/native/cpp/AnalogOutput.cpp
new file mode 100644
index 0000000..041b446
--- /dev/null
+++ b/wpilibc/src/main/native/cpp/AnalogOutput.cpp
@@ -0,0 +1,74 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2014-2019 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/AnalogOutput.h"
+
+#include <limits>
+#include <utility>
+
+#include <hal/AnalogOutput.h>
+#include <hal/FRCUsageReporting.h>
+#include <hal/HALBase.h>
+#include <hal/Ports.h>
+
+#include "frc/SensorUtil.h"
+#include "frc/WPIErrors.h"
+#include "frc/smartdashboard/SendableBuilder.h"
+#include "frc/smartdashboard/SendableRegistry.h"
+
+using namespace frc;
+
+AnalogOutput::AnalogOutput(int channel) {
+  if (!SensorUtil::CheckAnalogOutputChannel(channel)) {
+    wpi_setWPIErrorWithContext(ChannelIndexOutOfRange,
+                               "analog output " + wpi::Twine(channel));
+    m_channel = std::numeric_limits<int>::max();
+    m_port = HAL_kInvalidHandle;
+    return;
+  }
+
+  m_channel = channel;
+
+  HAL_PortHandle port = HAL_GetPort(m_channel);
+  int32_t status = 0;
+  m_port = HAL_InitializeAnalogOutputPort(port, &status);
+  if (status != 0) {
+    wpi_setHALErrorWithRange(status, 0, HAL_GetNumAnalogOutputs(), channel);
+    m_channel = std::numeric_limits<int>::max();
+    m_port = HAL_kInvalidHandle;
+    return;
+  }
+
+  HAL_Report(HALUsageReporting::kResourceType_AnalogOutput, m_channel + 1);
+  SendableRegistry::GetInstance().AddLW(this, "AnalogOutput", m_channel);
+}
+
+AnalogOutput::~AnalogOutput() { HAL_FreeAnalogOutputPort(m_port); }
+
+void AnalogOutput::SetVoltage(double voltage) {
+  int32_t status = 0;
+  HAL_SetAnalogOutput(m_port, voltage, &status);
+
+  wpi_setHALError(status);
+}
+
+double AnalogOutput::GetVoltage() const {
+  int32_t status = 0;
+  double voltage = HAL_GetAnalogOutput(m_port, &status);
+
+  wpi_setHALError(status);
+
+  return voltage;
+}
+
+int AnalogOutput::GetChannel() { return m_channel; }
+
+void AnalogOutput::InitSendable(SendableBuilder& builder) {
+  builder.SetSmartDashboardType("Analog Output");
+  builder.AddDoubleProperty("Value", [=]() { return GetVoltage(); },
+                            [=](double value) { SetVoltage(value); });
+}