URM14_RS485

#include <ModbusMaster.h>
ModbusMaster node;
static uint8_t pzemSlaveAddr = 0x0C;

float voltage,  current, power, energy, freq, pf;
#define pzemSerial Serial2

#define TINY_GSM_MODEM_SIM800
#define SerialMon Serial
#define SerialAT Serial1

#if !defined(TINY_GSM_RX_BUFFER)
#define TINY_GSM_RX_BUFFER 650
#endif
#define TINY_GSM_DEBUG SerialMon
#define GSM_PIN ""

// Your GPRS credentials, if any
const char apn[]      = "Internet";
const char gprsUser[] = "";
const char gprsPass[] = "";

// Server details
const char _server[]   = "vsh.pp.ua";
const char resource[] = "/TinyGSM/logo.txt";
const int  port       = 80;

#include <TinyGsmClient.h>
#include <ArduinoHttpClient.h>

#ifdef DUMP_AT_COMMANDS
#include <StreamDebugger.h>
StreamDebugger debugger(SerialAT, SerialMon);
TinyGsm        modem(debugger);
#else
TinyGsm        modem(SerialAT);
#endif

TinyGsmClient client(modem);
HttpClient    http(client, _server, port);

#define RXD2 26
#define TXD2 25

#define RXD1 17
#define TXD1 16

#define PKEY 14

#define   TEMP_CPT_SEL_BIT          ((uint16_t)0x01)
#define   TEMP_CPT_ENABLE_BIT       ((uint16_t)0x01 << 1)
#define   MEASURE_MODE_BIT          ((uint16_t)0x01 << 2)
#define   MEASURE_TRIG_BIT          ((uint16_t)0x01 << 3)

bool state =  true;
volatile uint16_t cr = 0;

void setup() {

  //pzemSerial.begin(9600);
  Serial.begin(115200);
  Serial2.begin(19200, SERIAL_8N1, RXD1, TXD1);

  SerialAT.begin(9600, SERIAL_8N1, RXD2, TXD2);

  SerialMon.println("Initializing modem...");
  modem.restart();
  // modem.init();

  String modemInfo = modem.getModemInfo();
  SerialMon.print("Modem Info: ");
  SerialMon.println(modemInfo);

  node.begin(pzemSlaveAddr, Serial2);
  cr |= MEASURE_MODE_BIT;//Set bit2 , Set to trigger mode
  cr &= ~(uint16_t)TEMP_CPT_SEL_BIT;//Select internal temperature compensation
  cr &= ~(uint16_t)TEMP_CPT_ENABLE_BIT;//enable temperature compensation

  Serial.print("cr: ");
  Serial.println(cr);
  node.writeSingleCoil(cr,state);
  delay(500);
}
void loop() {

  uint8_t result;
  Serial.println("tulis");
  cr |= MEASURE_TRIG_BIT;

  result = node.writeSingleCoil(cr, state);
  state = !state;
  delay(500);
  //Serial.println("baca");
  result = node.readHoldingRegisters(0, 9); //read the 9 registers of the PZEM-014 / 016
  if (result == node.ku8MBSuccess)
  {
    //Serial.println("sukses modbus");
    Serial.println(node.getResponseBuffer(0));
    Serial.println(node.getResponseBuffer(1));
    Serial.println(node.getResponseBuffer(2));
    Serial.println(node.getResponseBuffer(3));
    Serial.println(node.getResponseBuffer(4));
    Serial.println(node.getResponseBuffer(5));
    Serial.println(node.getResponseBuffer(6));
    Serial.println("--------------------------------");

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

void print_data() {
  Serial.println();
}