WPILib Reorganization

This is a major restructuring of the WPILib repository to simply build
procedures and remove the remnants of Maven from everything except the
eclipse plugins. Gradle files have been largely simplified or rewritten,
taking advantage of splitting up parts of the build into separate build
files for ease of reading.

The eclipse plugins are now in a separate project, as is ntcore. All
dependencies are resolved via Maven dependencies, with the
Jenkins-maintained WPILib repo. Project structures have also been
simplified: we no longer have separate subprojects inside wpilibc and
wpilibj. Where possible, these changes hav been done with git renames,
to make sure we still have full history for all repositories. Other
unrelated subprojects have also been broken out: OutlineViewer is now a
separate project.

Change-Id: Ib4e2a6e1a2f66427a14f16612b0e0d69ed661878

wpilibc/Athena/src/AnalogOutput.cpp

@@ -0,0 +1,100 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2014. 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 "AnalogOutput.h"
+#include "Resource.h"
+#include "WPIErrors.h"
+#include "LiveWindow/LiveWindow.h"
+
+#include <sstream>
+
+static std::unique_ptr<Resource> outputs;
+
+/**
+ * Construct an analog output on the given channel.
+ * All analog outputs are located on the MXP port.
+ * @param The channel number on the roboRIO to represent.
+ */
+AnalogOutput::AnalogOutput(uint32_t channel) {
+  Resource::CreateResourceObject(outputs, kAnalogOutputs);
+
+  std::stringstream buf;
+  buf << "analog input " << channel;
+
+  if (!checkAnalogOutputChannel(channel)) {
+    wpi_setWPIErrorWithContext(ChannelIndexOutOfRange, buf.str());
+    return;
+  }
+
+  if (outputs->Allocate(channel, buf.str()) ==
+      std::numeric_limits<uint32_t>::max()) {
+    CloneError(*outputs);
+    return;
+  }
+
+  m_channel = channel;
+
+  void *port = getPort(m_channel);
+  int32_t status = 0;
+  m_port = initializeAnalogOutputPort(port, &status);
+  wpi_setErrorWithContext(status, getHALErrorMessage(status));
+
+  LiveWindow::GetInstance()->AddActuator("AnalogOutput", m_channel, this);
+  HALReport(HALUsageReporting::kResourceType_AnalogOutput, m_channel);
+}
+
+/**
+ * Destructor. Frees analog output resource
+ */
+AnalogOutput::~AnalogOutput() { outputs->Free(m_channel); }
+
+/**
+ * Set the value of the analog output
+ *
+ * @param voltage The output value in Volts, from 0.0 to +5.0
+ */
+void AnalogOutput::SetVoltage(float voltage) {
+  int32_t status = 0;
+  setAnalogOutput(m_port, voltage, &status);
+
+  wpi_setErrorWithContext(status, getHALErrorMessage(status));
+}
+
+/**
+ * Get the voltage of the analog output
+ *
+ * @return The value in Volts, from 0.0 to +5.0
+ */
+float AnalogOutput::GetVoltage() const {
+  int32_t status = 0;
+  float voltage = getAnalogOutput(m_port, &status);
+
+  wpi_setErrorWithContext(status, getHALErrorMessage(status));
+
+  return voltage;
+}
+
+void AnalogOutput::UpdateTable() {
+  if (m_table != nullptr) {
+    m_table->PutNumber("Value", GetVoltage());
+  }
+}
+
+void AnalogOutput::StartLiveWindowMode() {}
+
+void AnalogOutput::StopLiveWindowMode() {}
+
+std::string AnalogOutput::GetSmartDashboardType() const {
+  return "Analog Output";
+}
+
+void AnalogOutput::InitTable(std::shared_ptr<ITable> subTable) {
+  m_table = subTable;
+  UpdateTable();
+}
+
+std::shared_ptr<ITable> AnalogOutput::GetTable() const { return m_table; }