Hi everybody. Im making a project and need some help.
You can find my codes below. I see DHT11 values on the webserver everything is ok. But I want to save this log values in the SD card on the ethernet shield and any time I want to reach and check values.
SO how can I reach SD card values and same time monitoring sensors ?
Its look like this, just want to logging SD Card and reach this values.
#include <DHT.h>
#define DHTPIN 8 // what pin we're connected to
// Uncomment whatever type you're using!
#define DHTTYPE DHT11 // DHT 11
//#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
// Connect pin 1 (on the left) of the sensor to +5V
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor
DHT dht(DHTPIN, DHTTYPE);
#include <SPI.h>
#include <Ethernet.h>
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0x90, 0xA2, 0xDA, 0x00, 0x23, 0x36 }; //MAC address found on the back of your ethernet shield.
IPAddress ip(53,65,174,177); // IP address dependent upon your network addresses.
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
dht.begin();
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
server.begin();
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
}
void loop() {
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
float h = dht.readHumidity();
float t = dht.readTemperature();
// check if returns are valid, if they are NaN (not a number) then something went wrong!
if (isnan(t) || isnan(h)) {
Serial.println("Failed to read from DHT");
} else {
Serial.print("Humidity: ");
Serial.print(h);
Serial.print(" %\t");
Serial.print("Temperature: ");
Serial.print(t);
Serial.println(" *C");
}
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
Serial.println("new client");
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close"); // the connection will be closed after completion of the response
client.println("Refresh: 20"); // refresh the page automatically every 5 sec
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html>");
// output the value of the DHT-11
client.println("<div style=\"border:1px solid black;float:left; margin-right:200px;margin-left:80px; width:400px;margin-bottom:20px; height:400px;\"><H2>");
client.print("<center>Nem: </center> ");
client.println("</H2>");
client.println("<p />");
client.println("<H1>");
client.println("<center>");
client.print(h);
client.print(" %\t");
client.println("</H1></div>");
client.println("</center>");
client.println("<div style=\"border:1px solid black; float:left; margin-right:200px;margin-bottom:20px; width:400px; height:400px;\"><H2>");
client.print("<center>Sicaklik: </center>");
client.println("</H2>");
client.println("<H1>");
//sicaklik degiskeni (fahrenayt). Sadece santigrat yazdiracaksan t degiskeni yeterli gelir
client.println("<center>");
client.print(t);
client.println(" °");
client.println("C");
client.println("</H1></div>");
client.println("</center>");
client.println("<div style=\"border:1px solid black; float:left; margin-right:200px;margin-bottom:20px; width:400px; height:400px;\"><H2>");
client.print("<center>Su Basinci: </center>");
client.println("</H2>");
client.println("<H1>");
//sicaklik degiskeni (fahrenayt). Sadece santigrat yazdiracaksan t degiskeni yeterli gelir
client.println("<center>");
client.print(t);
client.println(" °");
client.println("C");
client.println("</H1></div>");
client.println("</center>");
client.println("<div style=\"border:1px solid black; float:left; margin-right:200px;margin-bottom:20px;margin-left:80px; width:400px; height:400px;\"><H2>");
client.print("<center>Gaz Kacagi: </center>");
client.println("</H2>");
client.println("<H1>");
//sicaklik degiskeni (fahrenayt). Sadece santigrat yazdiracaksan t degiskeni yeterli gelir
client.println("<center>");
client.print(t);
client.println(" °");
client.println("C");
client.println("</H1></div>");
client.println("</center>");
client.println("<div style=\"border:1px solid black; float:left; margin-right:200px;margin-bottom:20px; width:400px; height:400px;\"><H2>");
client.print("<center>Elektrik Kacagi: </center>");
client.println("</H2>");
client.println("<H1>");
//sicaklik degiskeni (fahrenayt). Sadece santigrat yazdiracaksan t degiskeni yeterli gelir
client.println("<center>");
client.print(t);
client.println(" °");
client.println("C");
client.println("</H1></div>");
client.println("</center>");
client.println("<div style=\"border:1px solid black; float:left; margin-right:200px;margin-bottom:20px; width:400px; height:400px;\"><H2>");
client.print("<center>Su Kacagi: </center>");
client.println("</H2>");
client.println("<H1>");
//sicaklik degiskeni (fahrenayt). Sadece santigrat yazdiracaksan t degiskeni yeterli gelir
client.println("<center>");
client.print(t);
client.println(" °");
client.println("C");
client.println("</H1></div>");
client.println("</center>");
client.println("</html>");
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(1);
// close the connection:
client.stop();
Serial.println("client disonnected");
}
}