PipController.hpp

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#ifndef PIP_CONTROLLER_HPP
#define PIP_CONTROLLER_HPP
 
#include <Arduino.h>
#include <Pip.hpp>
class PipController{
    private:
        Pip& pip1;
        Pip& pip2;
    public:
        PipController(Pip& pip1, Pip& pip2) : pip1(pip1), pip2(pip2) {}
        void sweep(){
            double value1 = pip1.sweep_min;
            double value2 = pip2.sweep_min;
            double step1 = (double)(pip1.sweep_max - pip1.sweep_min) / (double)(pip1.num_samples - 1);
            double step2 = (double)(pip2.sweep_max - pip2.sweep_min) / (double)(pip2.num_samples - 1);
 
            //set delay to max delay between the pips - should always be the same since
            //both pips are configured the same
            uint16_t delay = (pip1.delay_us < pip2.delay_us) ? pip1.delay_us : pip2.delay_us;
            SPI.beginTransaction(SPISettings(SPI_SPEED, MSBFIRST, SPI_MODE));
            for (int i = 0; i < pip1.num_samples; i++){
                analogWrite(pip1.dac_pin, (int)value1);
                analogWrite(pip2.dac_pin, (int)value2);
                value1 += step1;
                value2 += step2;
                //preamp settling time - experimentally derived
                delayMicroseconds(delay);
                int total_data1 = 0;
                int total_data2 = 0;
                //avg_num should be same across both pips.
                for (int i=0; i < pip1.avg_num; i++){
                    total_data1 += pip1.read_adc();
                    total_data2 += pip2.read_adc();
                }
                pip1.data[i] = (uint16_t)(total_data1 / pip1.avg_num);
                pip2.data[i] = (uint16_t)(total_data2 / pip2.avg_num);
            }
            analogWrite(pip1.dac_pin, pip1.sweep_min);
            analogWrite(pip2.dac_pin, pip2.sweep_min);
            SPI.endTransaction();
        }
};
#endif