Files
allwpilib/wpilibc/wpilibC++/lib/HiTechnicCompass.cpp
thomasclark bb50f4b134 C++ testing
Made a toplevel directory for C++ and C++ tests

Change-Id: I4bc2074a7036ec7fe79568b411637a5bee9eb5b3

Added the C++ testing framework and one test

Change-Id: I1e80a1e16b251a49666820a9d4c8caa025da9785
2014-06-02 15:36:18 -04:00

109 lines
2.7 KiB
C++

/*----------------------------------------------------------------------------*/
/* 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 "HiTechnicCompass.h"
#include "DigitalModule.h"
#include "I2C.h"
//#include "NetworkCommunication/UsageReporting.h"
#include "WPIErrors.h"
#include "LiveWindow/LiveWindow.h"
const uint8_t HiTechnicCompass::kAddress;
const uint8_t HiTechnicCompass::kManufacturerBaseRegister;
const uint8_t HiTechnicCompass::kManufacturerSize;
const uint8_t HiTechnicCompass::kSensorTypeBaseRegister;
const uint8_t HiTechnicCompass::kSensorTypeSize;
const uint8_t HiTechnicCompass::kHeadingRegister;
/**
* Constructor.
*
* @param moduleNumber The digital module that the sensor is plugged into (1 or 2).
*/
HiTechnicCompass::HiTechnicCompass(uint8_t moduleNumber)
: m_i2c (NULL)
{
m_table = NULL;
DigitalModule *module = DigitalModule::GetInstance(moduleNumber);
if (module)
{
m_i2c = module->GetI2C(kAddress);
// Verify Sensor
const uint8_t kExpectedManufacturer[] = "HiTechnc";
const uint8_t kExpectedSensorType[] = "Compass ";
if ( ! m_i2c->VerifySensor(kManufacturerBaseRegister, kManufacturerSize, kExpectedManufacturer) )
{
wpi_setWPIError(CompassManufacturerError);
return;
}
if ( ! m_i2c->VerifySensor(kSensorTypeBaseRegister, kSensorTypeSize, kExpectedSensorType) )
{
wpi_setWPIError(CompassTypeError);
}
HALReport(HALUsageReporting::kResourceType_HiTechnicCompass, moduleNumber - 1);
LiveWindow::GetInstance()->AddSensor("HiTechnicCompass", moduleNumber, 0, this);
}
}
/**
* Destructor.
*/
HiTechnicCompass::~HiTechnicCompass()
{
delete m_i2c;
m_i2c = NULL;
}
/**
* Get the compass angle in degrees.
*
* The resolution of this reading is 1 degree.
*
* @return Angle of the compass in degrees.
*/
float HiTechnicCompass::GetAngle()
{
uint16_t heading = 0;
if (m_i2c)
{
m_i2c->Read(kHeadingRegister, sizeof(heading), (uint8_t *)&heading);
// Sensor is little endian... swap bytes
heading = (heading >> 8) | (heading << 8);
}
return (float)heading;
}
void HiTechnicCompass::UpdateTable() {
if (m_table != NULL) {
m_table->PutNumber("Value", GetAngle());
}
}
void HiTechnicCompass::StartLiveWindowMode() {
}
void HiTechnicCompass::StopLiveWindowMode() {
}
std::string HiTechnicCompass::GetSmartDashboardType() {
return "HiTechnicCompass";
}
void HiTechnicCompass::InitTable(ITable *subTable) {
m_table = subTable;
UpdateTable();
}
ITable * HiTechnicCompass::GetTable() {
return m_table;
}