Squashed 'third_party/allwpilib_2016/' content from commit 7f61816

Change-Id: If9d9245880859cdf580f5d7f77045135d0521ce7
git-subtree-dir: third_party/allwpilib_2016
git-subtree-split: 7f618166ed253a24629934fcf89c3decb0528a3b
diff --git a/wpilibc/Athena/src/ADXL345_I2C.cpp b/wpilibc/Athena/src/ADXL345_I2C.cpp
new file mode 100644
index 0000000..000d4b8
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+++ b/wpilibc/Athena/src/ADXL345_I2C.cpp
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+/*----------------------------------------------------------------------------*/
+/* 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 "ADXL345_I2C.h"
+#include "I2C.h"
+#include "HAL/HAL.hpp"
+#include "LiveWindow/LiveWindow.h"
+
+const uint8_t ADXL345_I2C::kAddress;
+const uint8_t ADXL345_I2C::kPowerCtlRegister;
+const uint8_t ADXL345_I2C::kDataFormatRegister;
+const uint8_t ADXL345_I2C::kDataRegister;
+constexpr double ADXL345_I2C::kGsPerLSB;
+
+/**
+ * Constructor.
+ *
+ * @param port The I2C port the accelerometer is attached to
+ * @param range The range (+ or -) that the accelerometer will measure.
+ */
+ADXL345_I2C::ADXL345_I2C(Port port, Range range) : I2C(port, kAddress) {
+  // Turn on the measurements
+  Write(kPowerCtlRegister, kPowerCtl_Measure);
+  // Specify the data format to read
+  SetRange(range);
+
+  HALReport(HALUsageReporting::kResourceType_ADXL345,
+            HALUsageReporting::kADXL345_I2C, 0);
+  LiveWindow::GetInstance()->AddSensor("ADXL345_I2C", port, this);
+}
+
+/** {@inheritdoc} */
+void ADXL345_I2C::SetRange(Range range) {
+  Write(kDataFormatRegister, kDataFormat_FullRes | (uint8_t)range);
+}
+
+/** {@inheritdoc} */
+double ADXL345_I2C::GetX() { return GetAcceleration(kAxis_X); }
+
+/** {@inheritdoc} */
+double ADXL345_I2C::GetY() { return GetAcceleration(kAxis_Y); }
+
+/** {@inheritdoc} */
+double ADXL345_I2C::GetZ() { return GetAcceleration(kAxis_Z); }
+
+/**
+ * Get the acceleration of one axis in Gs.
+ *
+ * @param axis The axis to read from.
+ * @return Acceleration of the ADXL345 in Gs.
+ */
+double ADXL345_I2C::GetAcceleration(ADXL345_I2C::Axes axis) {
+  int16_t rawAccel = 0;
+  Read(kDataRegister + (uint8_t)axis, sizeof(rawAccel), (uint8_t *)&rawAccel);
+  return rawAccel * kGsPerLSB;
+}
+
+/**
+ * Get the acceleration of all axes in Gs.
+ *
+ * @return An object containing the acceleration measured on each axis of the
+ * ADXL345 in Gs.
+ */
+ADXL345_I2C::AllAxes ADXL345_I2C::GetAccelerations() {
+  AllAxes data = AllAxes();
+  int16_t rawData[3];
+  Read(kDataRegister, sizeof(rawData), (uint8_t *)rawData);
+
+  data.XAxis = rawData[0] * kGsPerLSB;
+  data.YAxis = rawData[1] * kGsPerLSB;
+  data.ZAxis = rawData[2] * kGsPerLSB;
+  return data;
+}
+
+std::string ADXL345_I2C::GetSmartDashboardType() const {
+  return "3AxisAccelerometer";
+}
+
+void ADXL345_I2C::InitTable(std::shared_ptr<ITable> subtable) {
+  m_table = subtable;
+  UpdateTable();
+}
+
+void ADXL345_I2C::UpdateTable() {
+  m_table->PutNumber("X", GetX());
+  m_table->PutNumber("Y", GetY());
+  m_table->PutNumber("Z", GetZ());
+}
+
+std::shared_ptr<ITable> ADXL345_I2C::GetTable() const { return m_table; }