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/DigitalInput.cpp

@@ -0,0 +1,108 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2008. 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 $(WIND_BASE)/WPILib.  */
+/*----------------------------------------------------------------------------*/
+
+#include "DigitalInput.h"
+//#include "NetworkCommunication/UsageReporting.h"
+#include "Resource.h"
+#include "WPIErrors.h"
+#include "LiveWindow/LiveWindow.h"
+
+#include <sstream>
+
+/**
+ * Create an instance of a Digital Input class.
+ * Creates a digital input given a channel.
+ *
+ * @param channel The DIO channel 0-9 are on-board, 10-25 are on the MXP port
+ */
+DigitalInput::DigitalInput(uint32_t channel) {
+  std::stringstream buf;
+
+  if (!CheckDigitalChannel(channel)) {
+    buf << "Digital Channel " << channel;
+    wpi_setWPIErrorWithContext(ChannelIndexOutOfRange, buf.str());
+    return;
+  }
+  m_channel = channel;
+
+  int32_t status = 0;
+  allocateDIO(m_digital_ports[channel], true, &status);
+  wpi_setErrorWithContext(status, getHALErrorMessage(status));
+
+  LiveWindow::GetInstance()->AddSensor("DigitalInput", channel, this);
+  HALReport(HALUsageReporting::kResourceType_DigitalInput, channel);
+}
+
+/**
+ * Free resources associated with the Digital Input class.
+ */
+DigitalInput::~DigitalInput() {
+  if (StatusIsFatal()) return;
+  if (m_interrupt != nullptr) {
+    int32_t status = 0;
+    cleanInterrupts(m_interrupt, &status);
+    wpi_setErrorWithContext(status, getHALErrorMessage(status));
+    m_interrupt = nullptr;
+    m_interrupts->Free(m_interruptIndex);
+  }
+
+  int32_t status = 0;
+  freeDIO(m_digital_ports[m_channel], &status);
+  wpi_setErrorWithContext(status, getHALErrorMessage(status));
+}
+
+/**
+ * Get the value from a digital input channel.
+ * Retrieve the value of a single digital input channel from the FPGA.
+ */
+bool DigitalInput::Get() const {
+  int32_t status = 0;
+  bool value = getDIO(m_digital_ports[m_channel], &status);
+  wpi_setErrorWithContext(status, getHALErrorMessage(status));
+  return value;
+}
+
+/**
+ * @return The GPIO channel number that this object represents.
+ */
+uint32_t DigitalInput::GetChannel() const { return m_channel; }
+
+/**
+ * @return The value to be written to the channel field of a routing mux.
+ */
+uint32_t DigitalInput::GetChannelForRouting() const { return GetChannel(); }
+
+/**
+ * @return The value to be written to the module field of a routing mux.
+ */
+uint32_t DigitalInput::GetModuleForRouting() const { return 0; }
+
+/**
+ * @return The value to be written to the analog trigger field of a routing mux.
+ */
+bool DigitalInput::GetAnalogTriggerForRouting() const { return false; }
+
+void DigitalInput::UpdateTable() {
+  if (m_table != nullptr) {
+    m_table->PutBoolean("Value", Get());
+  }
+}
+
+void DigitalInput::StartLiveWindowMode() {}
+
+void DigitalInput::StopLiveWindowMode() {}
+
+std::string DigitalInput::GetSmartDashboardType() const {
+  return "DigitalInput";
+}
+
+void DigitalInput::InitTable(std::shared_ptr<ITable> subTable) {
+  m_table = subTable;
+  UpdateTable();
+}
+
+std::shared_ptr<ITable> DigitalInput::GetTable() const { return m_table; }