source: trunk/Arduino/GSM/doms/doms.ino

/*

  Testing of: Arduino for FACT

  Gareth Hughes 2013-10-30
  Dom Neise 2014-09

  Using: Arduino Ethernet
     GSM Overlay
     LSM303: Magnetic field and accelerometer
     YL-38: Light Sensor

  Function: Will reply to an SMS stating the position, movement and light level.
        If lighlevel gets above a certain threshold will send a warning SMS every 1 min.

    Modifications by Dom:
        - In order to find our why the resulting binary is soo large,
          I enclosed most of the code in precompiler #ifdef-#endif constructs.
          The 4 #define USE_<name> statements in the beginning can be commented
          in and out in order to create a binary, that e.g. does not need 
          the GSM shield to be attached.

        - printHelp function can now be given a reference to the EthernetClient
          that should recieve the help message, that way to clients can be connected 
          and will not get their mutual help messages anymore.
*/


//#define USE_WIRE
#define USE_ETH
//#define USE_LSM
#define USE_GSM

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

#ifdef USE_GSM
    #include <GSM.h>
#endif

#ifdef USE_WIRE
    #include <Wire.h>
#endif

#ifdef USE_LSM
    #include <LSM303.h>
#endif



#ifdef USE_ETH
EthernetServer server = EthernetServer(23);
#endif

//bool sentHeader = false;

// PIN Number for the SIM
#define PINNUMBER ""
#define NUMLEN 15



char  message[18];      // Array to hold SMS message
char  senderNumber[NUMLEN];  // Array to hold the number a SMS is retreived from

// -------------- GSM stuff --------------------------------------------
#ifdef USE_GSM
    GSM gsmAccess;
    GSM_SMS sms;
    byte gsmStatus = -1; // -1 : unknown
    bool use_gsm = false;
#endif

// -------------- Light sensor stuff -----------------------------------
int   iLight     =  9999;  // light level


// -------------- Compass stuff ----------------------------------------
#ifdef USE_LSM
LSM303 compass;
#endif
int   heading    = -9999;  // Continual heading reading
float pitch      = -9999.; // Pitch relative to horizon



void setup()
{
    // this is to begin (ethz) ethernet
    //Ethernet.begin(mac, ip, dnserver, gatew, smask);
    // initialize serial communications and wait for port to open:
    Serial.begin(9600);


#ifdef USE_ETH
    //ETH
    byte mac[]   = { 0x90, 0xA2, 0xDA, 0x0D, 0xB5, 0xE3 };
    byte ip[]    = { 192, 33, 103, 241 };
    //LA PALMA
    //byte mac[]   = { 0xFA, 0xC7, 0xBB, 0xFF, 0x33, 0x33 };
    //byte ip[]    = { 10, 0, 100, 202 };

    Ethernet.begin(mac, ip);
    server.begin();
    Serial.print("Chat server address:");
    Serial.println(Ethernet.localIP());
#else
    Serial.println("No ethernet this time :-(");
#endif



    // Start the Wire communication
#ifdef USE_WIRE
    Wire.begin();
#endif

    // Initialize the Compass
#ifdef USE_LSM
    compass.init();
    compass.enableDefault();

    // Calibration values. Use the Calibrate example program to get the values for your compass.
    // ETH Calibration values
    //  compass.m_min.x = -700; compass.m_min.y = -695; compass.m_min.z = -635;
    //  compass.m_max.x = +293; compass.m_max.y = +551; compass.m_max.z = 606;
    // La Palma calibration values
    compass.m_min.x = -389; compass.m_min.y = -423; compass.m_min.z = -420;
    compass.m_max.x = +510; compass.m_max.y = +420; compass.m_max.z = +315;
#endif
}


void loop()
{
#ifdef USE_GSM
    if (use_gsm && gsmStatus==GSM_READY)
    {
        // user wants us to use GSM, and GSM seems to be okay.
        checkForSms();
    } else if (use_gsm && gsmStatus!=GSM_READY)
    {
        // user wants us to use GSM, but it's not yet okay,
        // so we try to connect to GSM network.
        gsmStatus = gsmAccess.begin(PINNUMBER);
    } else if (!use_gsm && gsmStatus!=-1)
    {
        // user does NOT want us to use GSM, but we seem to be connected, 
        // so let's shut it down.
        gsmAccess.shutdown();
        // since there is no dedicated 'GSM_SHUTDOWN' status, we simply use -1.
        gsmStatus = -1;
    } else 
    {
        // user does NOT want us to use GSM and GSM seems to be down .. 
        // so we don't do anything.
    }
#else 
    checkForSms();
#endif

#ifdef USE_ETH
    checkForEthernetClient();
#endif

}


void checkForEthernetClient()
{
#ifdef USE_ETH
    EthernetClient client = server.available();
    if( !client ){
        return;
    }

    if( client.available() )
    {
        //if(!sentHeader)
        //{
            //printHelp(client);
            //sentHeader = true;
        //}

        int c = client.read();
        switch( c )
        {
            case 'q':
                //sentHeader = false;
                delay(1); // give the web browser time to receive the data
                client.stop(); // close the connection:
                break;
            case 'h':
                printHelp(client);
                break;
            case 'd':
                generateMessage();
                client.println(message);
                break;
            case 'g':
                use_gsm = true;
                break;
            case 'G':
                use_gsm = false;
                break;
            case 's':
                printStatus(client, true);
                break;
          //case 'p':
              //digitalWrite(9, HIGH);
              //server.println("Park");
              //break;
        }
    }
#endif
}


void printHelp(
#ifdef USE_ETH
    EthernetClient &c
#endif
    )
{
#ifdef USE_ETH
    c.println();
    c.println("FACT GSM");
    c.println("h help");
    c.println("q quit");
    c.println("g/G en-/disable GSM");
    c.println("s status");
    c.println();
    c.println("d direction");
    //c.println("p Park Tel");
    c.println();
#endif
}

void printStatus(
#ifdef USE_ETH
    EthernetClient &c,
#endif
    bool print_via_serial
    )
{
#ifdef USE_ETH
    c.print("use_gsm:   ");     c.println(use_gsm);
    c.print("gsmStatus: ");     c.println(gsmStatus);
#endif
    if (print_via_serial)
    {
        Serial.print("use_gsm:   ");     Serial.println(use_gsm);
        Serial.print("gsmStatus: ");     Serial.println(gsmStatus);
    }
}


void checkForSms()
{
#ifdef USE_GSM
    if( sms.available() )
    {
        // Get remote number
        sms.remoteNumber(senderNumber, NUMLEN);
        if( sms.peek()=='P' )
        {
            Serial.println("I P");
            generateMessage();
            sendSMS();
        }
        sms.flush();
    }
#else
    Serial.println("I *would* now check for SMS.");
#endif
}

void sendSMS()
{
#ifdef USE_GSM
    sms.beginSMS(senderNumber);
    sms.print(message);
    sms.endSMS();
#endif
}

void get_heading_pitch()
{
#ifdef USE_LSM
    compass.read();
    heading = compass.heading((LSM303::vector<int>){0,-1,0}) - 90 - 24;
    if( heading < 0 ) heading = heading + 360;

    pitch = atan(compass.a.x/sqrt(pow(compass.a.y,2.)+pow(compass.a.z,2.)));
    pitch *= 180.0/3.1415;
    pitch += 13.;
    pitch  = 90. - pitch;
#endif
}


// Generate SMS
void generateMessage()
{
  get_heading_pitch();
  // Read light level
  iLight = analogRead(0);
  // Setup message
  sprintf(message,"%d %d %d\n",heading,(int)pitch,iLight);
}