wpilibc/Athena/src/ADXL345_I2C.cpp

/*----------------------------------------------------------------------------*/
/* 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; }