baca_pzem

/*
 *  modif by mikroavr
 *  jimmi sitepu
 *  31-05-2022
 */

#include <ModbusMaster.h>
ModbusMaster node;
static uint8_t pzemSlaveAddr = 1;

#define EN 2
#define pzemSerial Serial1

float voltage,  current, power, energy, freq, pf;

void preTransmission()
{
  digitalWrite(EN, 1);
}

void postTransmission()
{
  digitalWrite(EN, 0);
}

void setup() {
  pinMode(EN, OUTPUT);
  digitalWrite(EN, 0);

  Serial.begin(115200);
  pzemSerial.begin(9600, SERIAL_8N1, 17, 16);


  node.begin(pzemSlaveAddr, pzemSerial);
  node.preTransmission(preTransmission);
  node.postTransmission(postTransmission);

}
void loop() {

  uint8_t result;
  result = node.readInputRegisters(0, 9); //read the 9 registers of the PZEM-014 / 016
  if (result == node.ku8MBSuccess)
  {
    Serial.println("sukses modbus");
    voltage = node.getResponseBuffer(0) / 10.0;

    uint32_t tempdouble = 0x00000000;

    tempdouble = node.getResponseBuffer(1);       //LowByte
    tempdouble |= node.getResponseBuffer(2) << 8;  //highByte
    current = tempdouble / 1000.0;

    tempdouble |= node.getResponseBuffer(3);       //LowByte
    tempdouble |= node.getResponseBuffer(4) << 8;  //highByte
    power = tempdouble / 10.0;

    tempdouble = node.getResponseBuffer(5);       //LowByte
    tempdouble |= node.getResponseBuffer(6) << 8;  //highByte
    energy = tempdouble;

    tempdouble = node.getResponseBuffer(7);
    freq = tempdouble / 10.0;

    tempdouble = node.getResponseBuffer(8);
    pf = tempdouble / 10.0;
    print_data();

  } else {
    Serial.println("Failed to read modbus");
  }
  delay(2000);
}

void print_data() {
  Serial.print(voltage);
  Serial.print("V   ");

  Serial.print(current);
  Serial.print("A   ");

  Serial.print(freq);
  Serial.print("Hz   ");

  Serial.print(pf);
  Serial.print("pf   ");
  Serial.print("   ");

  Serial.print(power);
  Serial.print("W  ");

  Serial.print(energy);
  Serial.print("Wh  ");
  Serial.println();
}