iioadaptor.h

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#ifndef IIOADAPTOR_H
#define IIOADAPTOR_H
 
#include <sysfsadaptor.h>
#include <datatypes/orientationdata.h>
 
// FIXME: shouldn't assume any number of channels per device
#define IIO_MAX_DEVICE_CHANNELS     20
 
// FIXME: no idea what would be reasonable length
#define IIO_BUFFER_LEN              256
 
class IioAdaptor : public SysfsAdaptor
{
    Q_OBJECT
    enum IioSensorType {
        IIO_ACCELEROMETER = 1, // accel_3d
        IIO_GYROSCOPE, // gyro_3d
        IIO_MAGNETOMETER, // magn_3d
        IIO_ROTATION, // dev_rotation, quaternion
        IIO_ALS, // als
        IIO_TILT, // incli_3d
        IIO_PROXIMITY // proximity als
    };
 
    struct iio_device {
      QString name;
      int channels;
      int channel_bytes[IIO_MAX_DEVICE_CHANNELS];
      qreal scale;
      qreal offset;
      int frequency;
      QString devicePath;
      int index;
      IioSensorType sensorType;
      QString channelTypeName;
    };
 
public:
    static DeviceAdaptor *factoryMethod(const QString& id)
    {
        return new IioAdaptor(id);
    }
 
    virtual bool startSensor();
    virtual void stopSensor();
//    virtual bool standby();
//    virtual bool resume();
 
protected:
 
    IioAdaptor(const QString &id);
 
    ~IioAdaptor();
 
 
    bool setInterval(const unsigned int value, const int sessionId);
    //  unsigned int interval() const;
 
private:
 
    void processSample(int pathId, int fd);
 
    int findSensor(const QString &name);
    bool deviceEnable(int device, int enable);
 
    bool sysfsWriteInt(QString filename, int val);
    QString sysfsReadString(QString filename);
    int sysfsReadInt(QString filename);
    int scanElementsEnable(int device, int enable);
    int deviceChannelParseBytes(QString filename);
 
    // Device number for the sensor (-1 if not found)
    int devNodeNumber;
 
    int proximityThreshold;
 
    DeviceAdaptorRingBuffer<TimedXyzData>* iioXyzBuffer_;
    DeviceAdaptorRingBuffer<TimedUnsigned>* alsBuffer_;
    DeviceAdaptorRingBuffer<CalibratedMagneticFieldData>* magnetometerBuffer_;
    DeviceAdaptorRingBuffer<ProximityData>* proximityBuffer_;
 
    iio_device iioDevice;
 
    QString deviceId;
 
    TimedXyzData* timedData;
    CalibratedMagneticFieldData *calData;
    TimedUnsigned *uData;
    ProximityData *proximityData;
 
private slots:
    void setup();
};
 
#endif