meter_calculations.h

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/* This file has been prepared for Doxygen automatic documentation generation.*/
#ifndef METER_CALCULATION_H
#define METER_CALCULATION_H

#include <math.h>

#define VOLT_GAIN               1
#define FREQUENCY_MAX           5000                        //100Hz, F_TIMER/100Hz 
#define FREQUENCY_MIN           25000                       //20Hz, F_TIMER/20Hz
#define LP_ORDER                6
#define ONE_PULSE_ENERGY_THRESHOLD (float)0.0003125
#define PULSE_ON_TIME    13

extern uint16_t Vrms[5], Irms[5],Nrms;
extern int16_t offset[7];
extern uint16_t adc_samples;
extern int32_t active_energy_signed,neutral_power;
extern uint16_t active_power[5],apparent_power;
extern int16_t power_factor;
extern int32_t volt_temp,ct_temp, shunt_temp;
extern uint8_t calibration_flag, calibration_count;
extern uint8_t gain_stage;
extern uint16_t frequency;
extern int64_t watts_sum, watts_sum_calib;
extern uint8_t freq_cnt,offset_cnt;
extern uint16_t max_demand;
extern float pulse_energy_2_5ms;

void calculate(void);
void calculate_freq(void);
void get_frequency(void);
int16_t lp_filter(int16_t *);
void meter_flush(void);


#endif