// Example for ZERO M0 GEVA board.
// http://www.gevaelettronica.it/shop/index.php?id_category=3&controller=category&id_lang=1
// Tested with arduino.cc IDE 1.6.12
// install wifi   library https://github.com/ekstrand/ESP8266wifi
// install eeprom library https://github.com/cmaglie/FlashStorage

// Enable example
#define IO
//#define TEST_MODEM_GSM    // GSM - When modem blink slowly, press board reset.
//#define ESP-01            // WiFi - Open with browser 192.168.4.1
//#define HC-Bluetooth      // Bluetooth - Pair with PC, pin 1234 - open serial com, send n and f
//#define TEST_SD
#define ZERO                // Otherwise M0

#ifdef TEST_MODEM_GSM
  #include <SPI.h>
#endif

#ifdef TEST_SD
  #include <SD.h>
  File myFile;
#endif

#ifdef IO
  int Mors5 = A3;                 // Terminals M5 O
  int Mors6 = A2;                 // Terminals M6 O
  int Mors7 = A1;                 // Terminals M7 O
  int Mors8 = A0;                 // Terminals M8 O
  int Mors1 = 3;                  // Terminals M1 I/O
  #ifdef ZERO
    int Mors2 = 2;                // Terminals M2 I/O - Zero .cc  board
  #else
    int Mors2 = 4;                // Terminals M2 I/O - M0   .org board 
  #endif
  int Mors3 = 1;                  // Terminals M3 I/O
  int Mors4 = 0;                  // Terminals M4 I/O
#endif

#ifdef HC-Bluetooth
  char blueToothVal;              //value sent over via bluetooth
  char lastValue;                 //stores last state of device (on/off)
#endif

void setup() 
{
#ifdef TEST_MODEM_GSM
  Serial.begin(57600);                           // Remove PIN at the SIM
  delay(1000);
  Serial.write("AT\r\n");                        // For AutoBaud
  delay(100);
  Serial.write("AT\r\n");                        // For AutoBaud
  delay(100);
  Serial.write("AT+CMGF=1\r\n");                 // Set SMS format to ASCII
  delay(100);
  Serial.write("AT+CMGS=\"3345787267\"\r\n");    // Send new SMS command and message number
  delay(100);
  Serial.write("TEST");                          // Send SMS content
  delay(100);
  Serial.write((char)26);                        // Send Ctrl+Z / ESC to denote SMS message is complete
  delay(100);  
#endif

#ifdef TEST_SD    // Write file on SD card.
  SD.begin(10);
  myFile = SD.open("example.txt", FILE_WRITE);
  myFile.close();
#endif

#ifdef ESP-01 
  Serial.begin(115200);
  sendData("AT\r\n",2000,1);          // autobaud
  sendData("AT+RST\r\n",2000,1);      // reset module
  sendData("AT+CWMODE=2\r\n",1000,1); // configure as access point
  sendData("AT+CIFSR\r\n",1000,1);    // get ip address
  sendData("AT+CIPMUX=1\r\n",1000,1); // configure for multiple connections
  sendData("AT+CIPSERVER=1,80\r\n",1000,1); // turn on server on port 80
#endif

#ifdef HC-07
  Serial.begin(9600); 
  pinMode(3,OUTPUT);    // Mors1
#endif

#ifdef IO
  // Define I/O pins
  pinMode(Mors1, OUTPUT);       // sets M1 digital pin as output
  pinMode(Mors2, OUTPUT);       // sets M2 digital pin as output
  pinMode(Mors3, OUTPUT);       // sets M3 digital pin as output
  pinMode(Mors4, OUTPUT);       // sets M4 digital pin as output

  pinMode(Mors5, INPUT);        // sets M5 digital pin as input
  pinMode(Mors6, INPUT);        // sets M6 digital pin as input
  pinMode(Mors7, INPUT);        // sets M7 digital pin as input
  pinMode(Mors8, INPUT);        // sets M8 digital pin as input
#endif
}

void loop() 
{

#ifdef HC-07
  if(Serial.available())
  {//if there is data being recieved
    blueToothVal=Serial.read(); //read it
  }
  if (blueToothVal=='n')
  {//if value from bluetooth serial is n
    digitalWrite(3,HIGH);            //switch on LED
    if (lastValue!='n')
      Serial.println(F("LED is on")); //print LED is on
    lastValue=blueToothVal;
  }
  else if (blueToothVal=='f')
  {//if value from bluetooth serial is n
    digitalWrite(3,LOW);             //turn off LED
    if (lastValue!='f')
      Serial.println(F("LED is off")); //print LED is on
    lastValue=blueToothVal;
  }
  delay(1000);
#endif

#ifdef ESP-01 
  if(Serial.available()) // check if the esp is sending a message 
    {
    /*
    while(esp8266.available())
    {
      // The esp has data so display its output to the serial window 
      char c = esp8266.read(); // read the next character.
      Serial.write(c);
    } */
    
    if(Serial.find("+IPD,"))
    {
     delay(1000);
 
     int connectionId = Serial.read()-48; // subtract 48 because the read() function returns 
                                           // the ASCII decimal value and 0 (the first decimal number) starts at 48
     
     String webpage = "<h1>Hello</h1><h2>World!</h2><button>LED1</button>";
 
     String cipSend = "AT+CIPSEND=";
     cipSend += connectionId;
     cipSend += ",";
     cipSend +=webpage.length();
     cipSend +="\r\n";
     
     sendData(cipSend,1000,1);
     sendData(webpage,1000,1);
     
     webpage="<button>LED2</button>";
     
     cipSend = "AT+CIPSEND=";
     cipSend += connectionId;
     cipSend += ",";
     cipSend +=webpage.length();
     cipSend +="\r\n";
     
     sendData(cipSend,1000,1);
     sendData(webpage,1000,1);
 
     String closeCommand = "AT+CIPCLOSE="; 
     closeCommand+=connectionId; // append connection id
     closeCommand+="\r\n";
     
     sendData(closeCommand,3000,1);
    }
  }
#endif

#ifdef IO  
  if(digitalRead(Mors5)) digitalWrite(Mors1, HIGH);
  else digitalWrite(Mors1, LOW);
  
  if(digitalRead(Mors6)) digitalWrite(Mors2, HIGH);
  else digitalWrite(Mors2, LOW);
  
  if(digitalRead(Mors7)) digitalWrite(Mors3, HIGH);
  else digitalWrite(Mors3, LOW);
  
  if(digitalRead(Mors8)) digitalWrite(Mors4, HIGH);
  else digitalWrite(Mors4, LOW);
#endif
  
}
 
 
#ifdef ESP-01 
String sendData(String command, const int timeout, boolean debug)
{
    String response = "";
    
    Serial.print(command); // send the read character to the esp8266
    
    long int time = millis();
    
    while( (time+timeout) > millis())
    {
      while(Serial.available())
      {
        
        // The esp has data so display its output to the serial window 
        char c = Serial.read(); // read the next character.
        response+=c;
      }  
    }
    
    if(debug)
    {
      // Serial999.print(response);
    }
    
    return response;
}
#endif