#include <MsTimer2.h> // Timer
#include <Ethernet2.h>

#include <avr/wdt.h>  // ??

//#include "SC_AI.h"  // Differential analog input collector
//#include "SC_MC9.h"  // MC9 Tempreture Controller

#define RcvOK "OK\r\n"
#define RcvErr "ER\r\n"
#define MODE_DEBUG  false

const int BUFF_SIZE = 512;
char Buff_Eth_Rd[BUFF_SIZE] = {0};
char Buff_485_Wr[BUFF_SIZE] = {0};
char Buff_485_Rd[BUFF_SIZE] = {0};
String latest_sent_msg;
int numOf485 = 0;
int returnTime = 0;
// ========== ========== Periodic Flags
bool T_10ms = false;
bool T_20ms = false;
bool T_50ms = false;
bool T_100ms = false;
bool T_200ms = false;
bool T_500ms = false;
bool T_1000ms = false;
bool T_2000ms = false;
bool T_5000ms = false;

// ========== ========== Communication
// ---------- Ethernet

// Ethernet Client
EthernetClient client;
// SCPI defaults to port 5025
EthernetServer server(5025);
// HTTP defaults to port 5025
EthernetServer web(80);

unsigned long lastDataReceivedTime;
unsigned long timeoutPeriod = 5000;  // 타임아웃 시간 (5초)

bool State_eth = false;


// ---------- 485
String Buf_485;
bool Wait_485;
int Wait_485_cnt;

// ========== ========== Processing

// Read Datas
int Size_AI = 16;
int Values_AI[16];
int Size_PV = 8;
int Values_10_PV[8];
int Size_SV = 8;
int Values_10_SV[8];

int msCnt = 0;
unsigned long timer = 0;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Start!");
  
  // modules setup (init.)
  Ethernet_setup();
  GPIO_setup();
  //MC9_setup();
  RS485_setup();

  // Timer set
  MsTimer2::set(10, timer_10ms);
  MsTimer2::start();
}

void loop() {
  
  // wait for a new client:
  //webReponse();
  client = server.available();

  if (client) {
    String Buf_eth;
    String message;
    String cmd;
    String cmdData;
    unsigned int data[32];        
    int dataSize;

    // check if client is connected
    Serial.println("Client Connected!!!");

    // Do What Message Command
    while(client.connected()){

      // read data check
      if(client.available() > 0) {
        char c ;//= client.read();

        while((c = client.read())) {

          if((c == '\n') && (Buff_Eth_Rd[strlen(Buff_Eth_Rd)-1] == '\r')){
            write_buff_c(Buff_Eth_Rd, c);
            break;
          }else{
            write_buff_c(Buff_Eth_Rd, c);
          }
          
          /*
          //If endwith CRLF
          if((c == 10) && (Buf_eth.endsWith("\r"))){
            Buf_eth.remove(Buf_eth.length() - 1); //remove CR
            message = Buf_eth;
            Buf_eth = "";
            break;
          }else{
            Buf_eth += c;
          }
          */
        }
        // 데이터를 수신했으므로 타임아웃 타이머 초기화
        lastDataReceivedTime = millis();
      }
      message = read_buff(Buff_Eth_Rd);
      // If data read
      if(message != ""){
        cmd = demuxCMD(message, &cmdData);
        message = "";

        if(cmd=="AI?"){
          client.print(Prcss_AI_Read());

        }else if(cmd=="AO!"){
          dataSize = demuxNum(cmdData, data);
          client.print(Prcss_AO(data, dataSize));

        }else if(cmd=="PV?"){
          client.print(Prcss_PV_Read());

        }else if(cmd=="SV?"){
          client.print(Prcss_SV_Read());

        }else if(cmd=="SV!"){
          dataSize = demuxNum(cmdData, data);
          client.print(Prcss_SV_Write(data, dataSize));

        }//else if(cmd==""){

        //}
        else{
          client.print(cmd + " " + RcvErr);
        }
        message = "";
      }
      
      // Debug
      if(MODE_DEBUG){
        //Serial.print("Received command: ");
        //Serial.println(command);
      }

      // check Timeout
      if (millis() - lastDataReceivedTime > timeoutPeriod) {
        Serial.println("Client Disconnected... (Timeout)");
        client.stop();
      }
      Periodic_run();
    }
    Serial.println("Client Disconnected...");
  }
  Periodic_run();
}





void AnalogIn_Print(){
  for (int i = 0; i < Size_AI; i++) {
    Serial.print(Values_AI[i]);
    Serial.print("\t");
  }
  Serial.println();
}