Renamed folders for consistency, using sim/athena/shared schema (#27)

Rename the following folders:
hal/lib/Athena -> hal/lib/athena
hal/lib/Desktop -> hal/lib/sim
hal/lib/Shared -> hal/lib/shared
wpilibc/Athena -> wpilibc/athena
wpilibc/simulation -> wpilibc/sim

Windows users may need to run gradlew clean after updating.

wpilibc/athena/include/SerialPort.h

@@ -0,0 +1,73 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2008-2016. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include "ErrorBase.h"
+#include "HAL/HAL.hpp"
+
+/**
+ * Driver for the RS-232 serial port on the RoboRIO.
+ *
+ * The current implementation uses the VISA formatted I/O mode.  This means that
+ * all traffic goes through the fomatted buffers.  This allows the intermingled
+ * use of Printf(), Scanf(), and the raw buffer accessors Read() and Write().
+ *
+ * More information can be found in the NI-VISA User Manual here:
+ *   http://www.ni.com/pdf/manuals/370423a.pdf
+ * and the NI-VISA Programmer's Reference Manual here:
+ *   http://www.ni.com/pdf/manuals/370132c.pdf
+ */
+class SerialPort : public ErrorBase {
+ public:
+  enum Parity {
+    kParity_None = 0,
+    kParity_Odd = 1,
+    kParity_Even = 2,
+    kParity_Mark = 3,
+    kParity_Space = 4
+  };
+  enum StopBits {
+    kStopBits_One = 10,
+    kStopBits_OnePointFive = 15,
+    kStopBits_Two = 20
+  };
+  enum FlowControl {
+    kFlowControl_None = 0,
+    kFlowControl_XonXoff = 1,
+    kFlowControl_RtsCts = 2,
+    kFlowControl_DtrDsr = 4
+  };
+  enum WriteBufferMode { kFlushOnAccess = 1, kFlushWhenFull = 2 };
+  enum Port { kOnboard = 0, kMXP = 1, kUSB = 2 };
+
+  SerialPort(uint32_t baudRate, Port port = kOnboard, uint8_t dataBits = 8,
+             Parity parity = kParity_None, StopBits stopBits = kStopBits_One);
+  ~SerialPort();
+
+  SerialPort(const SerialPort&) = delete;
+  SerialPort& operator=(const SerialPort&) = delete;
+
+  void SetFlowControl(FlowControl flowControl);
+  void EnableTermination(char terminator = '\n');
+  void DisableTermination();
+  int32_t GetBytesReceived();
+  uint32_t Read(char* buffer, int32_t count);
+  uint32_t Write(const std::string& buffer, int32_t count);
+  void SetTimeout(float timeout);
+  void SetReadBufferSize(uint32_t size);
+  void SetWriteBufferSize(uint32_t size);
+  void SetWriteBufferMode(WriteBufferMode mode);
+  void Flush();
+  void Reset();
+
+ private:
+  uint32_t m_resourceManagerHandle = 0;
+  uint32_t m_portHandle = 0;
+  bool m_consoleModeEnabled = false;
+  uint8_t m_port;
+};