Test libreria de Alexander Emelianov

/*
  Test modbus Server Library https://github.com/emelianov/modbus-esp8266

*/

#include <SPI.h>
#include <Ethernet.h>
#include <ModbusEthernet.h>

#define MAC  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x69
#define IP 192, 168, 6,69

ModbusEthernet modbus;              // Modbus TCP instance

void setup() {

  byte mac[] = {MAC};
  IPAddress ip(IP); // The IP address will be dependent on your local network:

  Serial.begin(9600);     // Open serial communications and wait for port to open
  while (!Serial) {}        // wait for serial port to connect. Needed for Leonardo only

  Ethernet.begin(mac, ip);  // start the Ethernet connection
  delay(1200);              // Arceli W5500 time to initialice

  Serial.print (F(" Modbus Server TCP on "));
  Serial.println (ip);

  modbus.server();              // TCP modbus server
  createModbusMemory( &modbus, 8 ,8); //Crée 8 entrées et 8 sorties

}

//Create the modbus memory structure
//https://github.com/emelianov/modbus-esp8266/tree/master/examples/TCP-ESP#API
void createModbusMemory(ModbusEthernet *modbus , int in , int out){
  (*modbus).addHreg(0, 0, in);//010300000002 Resp. 01030400010001 or 01030400000000
  (*modbus).addCoil(0, 0, out);//010100000008 https://www.simplymodbus.ca/FC15.htm

}

void ReadModbusMemory (ModbusEthernet *modbus,int in,int out){
  for (int i=in ;i<out+8;i++){//Read in
    Serial.print ((*modbus).Coil(i)) ;//bool Coil(uint16_t offset);
  }

  Serial.println(F(""));
  for (int i=in ; i<in+8 ; i++){//Read in
    Serial.print ( (*modbus).Hreg(i)) ;// Hreg(uint16_t offset)
  }
  Serial.println(F("\n"));


}

void loop() {
  modbus.task();                // Server Modbus TCP queries
  ReadModbusMemory (&modbus,0,0);
  delay(50);
}