/*
 이 스케치는 ardafruit 및 여러 커뮤니티를 참고하여 작성되였습니다.
 ardafruit : https://learn.adafruit.com/adafruit-ina219-current-sensor-breakout?view=all#overview
*/
#include <Wire.h>
#include <Adafruit_INA219.h>

Adafruit_INA219 ina219;

void setup(void) 
{
  uint32_t currentFrequency;
    
  Serial.begin(115200);
  Serial.println("Hello!");
  
  Serial.println("Measuring voltage and current with INA219 ...");
  ina219.begin();  //초기화
}

void loop(void) 
{
  float shuntvoltage = 0;
  float busvoltage = 0;
  float current_mA = 0;
  float loadvoltage = 0;

  shuntvoltage = ina219.getShuntVoltage_mV(); //Shunt 전압측정
  busvoltage = ina219.getBusVoltage_V(); //Bus 전압측정 
  current_mA = ina219.getCurrent_mA();   //전류 측정
  loadvoltage = busvoltage + (shuntvoltage / 1000); //Load 전압계산
  
  Serial.print("Bus Voltage:   "); Serial.print(busvoltage); Serial.println(" V");   //Bus 전압 출력
  Serial.print("Shunt Voltage: "); Serial.print(shuntvoltage); Serial.println(" mV"); //Shunt 전압 출력
  Serial.print("Load Voltage:  "); Serial.print(loadvoltage); Serial.println(" V");   //Load 전압 출력
  Serial.print("Current:       "); Serial.print(current_mA); Serial.println(" mA");   //전류 출력
  Serial.println("");

  delay(2000);
}

#include <Adafruit_INA219.h>

ina219.begin();  //초기화

#include <Wire.h>
#include <Adafruit_INA219.h>

Adafruit_INA219 ina219_A;
Adafruit_INA219 ina219_B(0x41);


void setup(void) 
{
  ina219_A.begin();  // Initialize first board (default address 0x40)
  ina219_B.begin();  // Initialize second board with the address 0x41
}

shuntvoltage = ina219.getShuntVoltage_mV();   //shunt 전압측정
busvoltage = ina219.getBusVoltage_V();        //bus 전압측정
current_mA = ina219.getCurrent_mA();          //전류 측정
loadvoltage = busvoltage + (shuntvoltage / 1000);