analogsensor.h

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#ifndef SEMF_INPUT_SENSOR_ANALOGSENSOR_H_
#define SEMF_INPUT_SENSOR_ANALOGSENSOR_H_
 
#include <semf/input/analogin.h>
#include <semf/input/sensor/hardwaresensor.h>
#include <semf/utils/core/buffer/lastindmabuffer.h>
#include <semf/utils/core/signals/slot.h>
 
namespace semf
{
template <typename T, size_t N_CHANNELS = 1>
class AnalogSensor : public HardwareSensor<T>
{
public:
    AnalogSensor(AnalogIn& analogIn, T buffer[], size_t bufferSize);
    explicit AnalogSensor(const AnalogSensor& other) = delete;
    virtual ~AnalogSensor() = default;
 
    void update() override;
    LastInBuffer<T>& buffer(size_t index) override;
 
private:
    void onDataAvailable();
 
    AnalogIn& m_analogIn;
    LastInDmaBuffer<T> m_buffers[N_CHANNELS];
    size_t m_currentChannelIndex = 0;
    SEMF_SLOT(m_onDataAvailableSlot, AnalogSensor, *this, onDataAvailable);
};
 
template <typename T, size_t N_CHANNELS>
AnalogSensor<T, N_CHANNELS>::AnalogSensor(AnalogIn& analogIn, T buffer[], size_t bufferSize)
: m_analogIn(analogIn)
{
    m_analogIn.dataAvailable.connect(m_onDataAvailableSlot);
    for (size_t i = 0; i < N_CHANNELS; i++)
    {
        m_buffers[i].setBuffer(buffer, bufferSize);
        m_buffers[i].setStride(N_CHANNELS);
        m_buffers[i].setPos(i);
    }
}
 
template <typename T, size_t N_CHANNELS>
void AnalogSensor<T, N_CHANNELS>::update()
{
    m_analogIn.start();
}
 
template <typename T, size_t N_CHANNELS>
LastInBuffer<T>& AnalogSensor<T, N_CHANNELS>::buffer(size_t index)
{
    return m_buffers[index];
}
 
template <typename T, size_t N_CHANNELS>
void AnalogSensor<T, N_CHANNELS>::onDataAvailable()
{
    m_buffers[m_currentChannelIndex].put(static_cast<T>(m_analogIn.value()));
    HardwareSensor<T>::dataAvailable(m_currentChannelIndex);
    m_currentChannelIndex++;
    m_currentChannelIndex %= N_CHANNELS;
}
} /* namespace semf */
#endif /* SEMF_INPUT_SENSOR_ANALOGSENSOR_H_ */