init_network function:
Code: Select all
int8_t init_network()
{
Adafruit_CC3000_Client client = cc3000.connectTCP(ip, port);
cc3000.reboot();
Serial.println("reconnecting to WLAN");
// Set up the CC3000, connect to the access point, and get an IP address.
#ifdef DEBUG
Serial.println(F("Initializing CC3000..."));
#endif
if (!cc3000.begin())
Serial.begin(9600);
while (! Serial);
delay(500);
/* Attempt to connect to an access point */
char *ssid = WLAN_SSID; /* Max 32 chars */
Serial.print(F("\nAttempting to connect to "));
Serial.println(ssid);
if (!cc3000.connectToAP(WLAN_SSID, WLAN_PASS, WLAN_SECURITY)) {
Serial.println(F("Failed!"));
while(1);
return -1;
}
delay(15 * 1000);
Serial.println(F("Connected to Wireless Network!"));
Serial.println(F("Request DHCP..."));
while (!cc3000.checkDHCP())
{
delay(100);
}
/* Display the IP address DNS, Gateway, etc. */
while (! displayConnectionDetails()) {
delay(1000);
}
}
Code: Select all
void listen(){
// listen for incoming clients and output to Dynamic webpage
if (!cc3000.checkConnected()) // make sure we are still connected to wireless network
{
if (init_network()) // reconnect to WLAN
{
delay(15 * 1000); // if no connection, try again later
return;
}
}
Adafruit_CC3000_ClientRef client = server.available();
//Serial.print statement stops here; net Serial.print statement does not print
//on opening browser to server ip.
if (client) {
// an http request ends with a blank line
Serial.print("client found");
getDateTime();
Serial.println(dtStamp);
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
// buffer first part of HTTP request in HTTP_req array (string)
// leave last element in array as 0 to null terminate string (REQ_BUF_SZ - 1)
if (req_index < (REQ_BUF_SZ - 1)) {
HTTP_req[req_index] = c; // save HTTP request character
req_index++;
}
// print HTTP request character to serial monitor
Serial.print(c);
if (c == '\n' && currentLineIsBlank) {
// open requested web page file
if (StrContains(HTTP_req, "GET / ")){
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connnection: close");
client.println();
// output dynamic webpage
client.println("<!DOCTYPE HTML>");
client.println("<html>\r\n");
client.println("<head><title>Weather Observations</title></head>");
// add a meta refresh tag, so the browser pulls again every 15 seconds:
//client.println("<meta http-equiv=\"refresh\" content=\"15\">");
client.println("<h2>Treyburn Lakes</h2><br />");
client.println("BANNED, IN 46239<br />");
client.println("Date,Time: " + (dtStamp) + " EST<br />");
client.println("Temperature: ");
client.print(DHT.temperature * 9/5 + 32);
client.print(" F.<br />");
client.println("Humidity: ");
client.print(DHT.humidity);
client.print(" %<br />");
client.println("Barometric Pressure: ");
client.print((Pressure * 0.000295333727), 3); //Convert Pascals to inches of Mecury
client.print( " in. Hg<br />");
client.println("Barometric Pressure: ");
client.print((Pressure) * .01); //Convert Pascals to millibars
client.print(" mb.<br />");
client.println("Atmosphere: ");
client.print((Pressure * 0.00000986923267), 3); //Convert Pascals to Atm (atmospheric pressure)
client.print(" atm <br />");
client.println("Altitude: ");
client.print(Altitude * 0.0328084); //Convert cm to Feet
client.print(" Feet<br />");
client.println("<br /><br />");
client.println("<h2>Collected Observations</h2>");
client.println("<a href='log.txt' download>Download: Data Collection</a><br />");
client.println("<br />\r\n");
client.println("</html>\r\n");
}
else if (StrContains(HTTP_req, "GET /log.txt")) {
webFile = SD.open("log.txt");
if (webFile) {
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: application/octet-stream");
client.println("Content-Disposition: attachment");
//client.println("Content-Length: ");
//client.println(webFile.available());
client.println("Connnection: close");
client.println();
//this goes in the function that sends the data
char buffer[ BUFSIZE ];
int i;
while ( webFile.available() ) {
for (i=0 ; (i < BUFSIZE) && (buffer[ i-1 ] >= 0) ; i++) {
buffer[i] = webFile.read();
}
client.write( buffer, (buffer[i-1] >= 0) ? i : i-1 );
}
}
// reset buffer index and all buffer elements to 0
req_index = 0;
StrClear(HTTP_req, REQ_BUF_SZ);
webFile.close();
delay(30);
break;
}
else if ((!StrContains(HTTP_req, "GET / "))||(!StrContains(HTTP_req, "GET /log.txt"))){
// Page Not Found 404
// send a HTTP response header
client.println("HTTP/1.1 404");
client.println("Content-Type: text/html");
client.println("Connnection: close");
client.println();
// output webpage
client.println("<!DOCTYPE HTML>");
client.println("<html>\r\n");
client.println("<h2>Page Not Found</h2><br />");
client.println("<html>\r\n");
}
// reset buffer index and all buffer elements to 0
req_index = 0;
StrClear(HTTP_req, REQ_BUF_SZ);
break;
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
}
else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
//delay(10);
// close the connection:
client.close();
delay(10000);
Serial.println("Ready");
}
}
