Files
allwpilib/wpilibc/wpilibC++Sim/include/Gyro.h
Tyler Veness d5922bb037 artf4127: Implemented velocity PID controller
Change-Id: I8c0f84422f7ca0ac5c50fddb282fb3452ee1d491
2015-08-11 01:05:45 -07:00

61 lines
2.2 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. */
/*----------------------------------------------------------------------------*/
#pragma once
#include "SensorBase.h"
#include "PIDSource.h"
#include "LiveWindow/LiveWindowSendable.h"
#include "simulation/SimGyro.h"
#include <memory>
class AnalogInput;
class AnalogModule;
/**
* Use a rate gyro to return the robots heading relative to a starting position.
* The Gyro class tracks the robots heading based on the starting position. As the robot
* rotates the new heading is computed by integrating the rate of rotation returned
* by the sensor. When the class is instantiated, it does a short calibration routine
* where it samples the gyro while at rest to determine the default offset. This is
* subtracted from each sample to determine the heading. This gyro class must be used
* with a channel that is assigned one of the Analog accumulators from the FPGA. See
* AnalogInput for the current accumulator assignments.
*/
class Gyro : public SensorBase, public PIDSource, public LiveWindowSendable
{
public:
static const uint32_t kOversampleBits = 10;
static const uint32_t kAverageBits = 0;
static constexpr float kSamplesPerSecond = 50.0;
static constexpr float kCalibrationSampleTime = 5.0;
static constexpr float kDefaultVoltsPerDegreePerSecond = 0.007;
explicit Gyro(uint32_t channel);
virtual ~Gyro() = default;
virtual float GetAngle() const;
virtual double GetRate() const;
virtual void Reset();
// PIDSource interface
void SetPIDSourceType(PIDSourceType pidSource) override;
double PIDGet() const override;
void UpdateTable() override;
void StartLiveWindowMode() override;
void StopLiveWindowMode() override;
std::string GetSmartDashboardType() const override;
void InitTable(std::shared_ptr<ITable> subTable) override;
std::shared_ptr<ITable> GetTable() const override;
private:
void InitGyro(int channel);
SimGyro* impl;
std::shared_ptr<ITable> m_table = nullptr;
};