upload sketch modbus RTU RS485

/*
Author  : Fuad Hasan
Created : 9 Mei  2017
        
*/

#include <ModbusSlave.h>

ModbusSlave mbs;

/*register addres modbus*/
enum { 
        MB_40000,            
        MB_40001,          
        MB_40002,       
      
        MB_REGS     //jumlah addres yang dipolling sebanyak 3   
};

int regs[MB_REGS];
unsigned long wdog = 0;         /* watchdog */
unsigned long tprev = 0;         /* previous time*/

void setup()
{
       
/* the Modbus slave configuration parameters */

  const unsigned char SLAVE = 10;      /* slaveId */
  const long BAUD = 9600;             /* baud rate */
  const char PARITY = 'n';             /* n=none; e=even; o=odd */
  const char TXENPIN = 2;              /* output driver enable pin */

  /* Second step MBS: configure */
  mbs.configure(SLAVE, BAUD, PARITY, TXENPIN);
  mbs.update(regs, MB_REGS);
  pinMode(13, OUTPUT);// digital output
  pinMode(12, INPUT);//digital input
 
}
void loop()
{
        /* Third and las step MBS: update in loop*/
        if(mbs.update(regs, MB_REGS))
                wdog = millis();
        if ((millis() - wdog) > 1500); 


 //   DIGITAL INPUT
   regs[MB_40000] = digitalRead(12);
  
  
//   DIGITAL OUTPUT  
   digitalWrite(13, regs[MB_40001]);
   
    //ANALOG INPUT
    regs[MB_40002] = analogRead(A0);
   
        
            
  }