server.cpp

#include <Adafruit_CC3000.h>
#include <SPI.h>
#include "utility/debug.h"
#include "utility/socket.h"

// These are the interrupt and control pins
#define ADAFRUIT_CC3000_IRQ   3  // MUST be an interrupt pin!
// These can be any two pins
#define ADAFRUIT_CC3000_VBAT  5
#define ADAFRUIT_CC3000_CS    10
// Use hardware SPI for the remaining pins
// On an UNO, SCK = 13, MISO = 12, and MOSI = 11
Adafruit_CC3000 cc3000 = Adafruit_CC3000(ADAFRUIT_CC3000_CS, ADAFRUIT_CC3000_IRQ, ADAFRUIT_CC3000_VBAT,
                                         SPI_CLOCK_DIV2); // you can change this clock speed

#define WLAN_SSID       "Kulagam"           // cannot be longer than 32 characters!
#define WLAN_PASS       "muskrat!"

// Security can be WLAN_SEC_UNSEC, WLAN_SEC_WEP, WLAN_SEC_WPA or WLAN_SEC_WPA2
#define WLAN_SECURITY   WLAN_SEC_WPA2

#define LISTEN_PORT           7000    // What TCP port to listen on for connections.  The echo protocol uses port 7.

Adafruit_CC3000_Server server(LISTEN_PORT);

bool networkReady = false;

  
unsigned long tNetworkStart;
bool lastLedState = false;
#define LED_PIN 2

void setup(void)
{
  Serial.begin(115200);
  
  Serial.print("Free RAM: "); Serial.println(getFreeRam(), DEC);
  
  pinMode(LED_PIN, OUTPUT);

  /* Initialise the module */
  if (!cc3000.begin())
  {
    Serial.println(F("Couldn't begin()! Check your wiring?"));
    while(1);
  }
}

void loop(void)
{ 

  digitalWrite(LED_PIN, !lastLedState);
  lastLedState = !lastLedState;
  
  wifi_state();
  
  /*
  if(millis()-tNetworkStart > 30000){
    Serial.println("Shutting down network its been too long.");
    cc3000.disconnect();
    tNetworkStart = millis();
  }
  */

  delay(100);
}


void wifi_state(){
  status_t status = cc3000.getStatus();

  Serial.print(millis());
  Serial.print(" State:");
  Serial.println(status);
  
  switch(status){
    case STATUS_DISCONNECTED:
      wifi_connect();
    break;
    case STATUS_SCANNING:
    break;
    case STATUS_CONNECTING:
    break;
    case STATUS_CONNECTED:
      check_network();
    break;
  };

}

void wifi_connect(){

  //digitalWrite(LED_PIN, LOW);

  if(networkReady){
    Serial.print(F("Network Failed! - "));
    Serial.println(millis()-tNetworkStart);
    //server.close();
  }

  networkReady = false;
  cc3000.disconnect();
  cc3000.connectSecure(WLAN_SSID, WLAN_PASS, WLAN_SECURITY);
}

void check_network(){
  if(!networkReady){
      
    if(cc3000.checkDHCP()){
      tNetworkStart = millis();
      Serial.println(F("Network Became Alive!"));
      displayConnectionDetails();

      server.begin();
      //digitalWrite(LED_PIN, HIGH);
      networkReady = true;
    }

  }
}

/**************************************************************************/
/*!
    @brief  Tries to read the IP address and other connection details
*/
/**************************************************************************/
bool displayConnectionDetails(void)
{
  uint32_t ipAddress, netmask, gateway, dhcpserv, dnsserv;
  
  if(!cc3000.getIPAddress(&ipAddress, &netmask, &gateway, &dhcpserv, &dnsserv))
  {
    Serial.println(F("Unable to retrieve the IP Address!\r\n"));
    return false;
  }
  else
  {
    Serial.print(F("\n\rIP Addr: ")); cc3000.printIPdotsRev(ipAddress);
    Serial.print(F("\n\rNetmask: ")); cc3000.printIPdotsRev(netmask);
    Serial.print(F("\n\rGateway: ")); cc3000.printIPdotsRev(gateway);
    Serial.print(F("\n\rDHCPsrv: ")); cc3000.printIPdotsRev(dhcpserv);
    Serial.print(F("\n\rDNSserv: ")); cc3000.printIPdotsRev(dnsserv);
    Serial.println();
    return true;
  }
}