How can I Run the sensors and led on Arduino using Ethernet shield with SD card ? Plz help me:(
#include <SPI.h>
#include <Ethernet.h>
#include <SD.h>
// maximum length of file name including path
#define FILE_NAME_LEN 20
// HTTP request type
#define HTTP_invalid 0
#define HTTP_GET 1
#define HTTP_POST 2
// file types
#define FT_HTML 0
#define FT_ICON 1
#define FT_CSS 2
#define FT_JAVASCRIPT 3
#define FT_JPG 4
#define FT_PNG 5
#define FT_GIF 6
#define FT_TEXT 7
#define FT_INVALID 8
// pin used for Ethernet chip SPI chip select
#define PIN_ETH_SPI 10
// the media access control (ethernet hardware) address for the shield:
const byte mac[] PROGMEM = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
//the IP address for the shield:
const byte ip[] = { 192, 168, 137, 1 }; // does not work if this is put into Flash
// the router's gateway address:
const byte gateway[] PROGMEM = { 192, 168, 1, 1 };
// the subnet:
const byte subnet[] PROGMEM = { 255, 255, 255, 0 };
EthernetServer server(80);
int led=2;
void setup() {
// deselect Ethernet chip on SPI bus
pinMode(PIN_ETH_SPI, OUTPUT);
digitalWrite(PIN_ETH_SPI, HIGH);
Serial.begin(115200); // for debugging
if (!SD.begin(4)) {
return; // SD card initialization failed
}
Ethernet.begin((uint8_t*)mac, ip, gateway, subnet);
server.begin(); // start listening for clients
}
void loop() {
// if an incoming client connects, there will be bytes available to read:
EthernetClient client = server.available();
if (client) {
while (client.connected()) {
if (ServiceClient(&client)) {
// received request from client and finished responding
break;
}
} // while (client.connected())
delay(1);
client.stop();
} // if (client)
}// void loop()
bool ServiceClient(EthernetClient *client)
{
static boolean currentLineIsBlank = true;
char cl_char;
File webFile;
// file name from request including path + 1 of null terminator
char file_name[FILE_NAME_LEN + 1] = {0}; // requested file name
char http_req_type = 0;
char req_file_type = FT_INVALID;
const char *file_types[] = {"text/html", "image/x-icon", "text/css", "application/javascript", "image/jpeg", "image/png", "image/gif", "text/plain"};
static char req_line_1[40] = {0}; // stores the first line of the HTTP request
static unsigned char req_line_index = 0;
static bool got_line_1 = false;
if (client->available()) { // client data available to read
cl_char = client->read();
if ((req_line_index < 39) && (got_line_1 == false)) {
if ((cl_char != '\r') && (cl_char != '\n')) {
req_line_1[req_line_index] = cl_char;
req_line_index++;
}
else {
got_line_1 = true;
req_line_1[39] = 0;
}
}
if ((cl_char == '\n') && currentLineIsBlank) {
// get HTTP request type, file name and file extension type index
http_req_type = GetRequestedHttpResource(req_line_1, file_name, &req_file_type);
if (http_req_type == HTTP_GET) { // HTTP GET request
if (req_file_type < FT_INVALID) { // valid file type
webFile = SD.open(file_name); // open requested file
if (webFile) {
// send a standard http response header
client->println(F("HTTP/1.1 200 OK"));
client->print(F("Content-Type: "));
client->println(file_types[req_file_type]);
client->println(F("Connection: close"));
client->println();
// send web page
while(webFile.available()) {
int num_bytes_read;
char byte_buffer[64];
// get bytes from requested file
num_bytes_read = webFile.read(byte_buffer, 64);
// send the file bytes to the client
client->write(byte_buffer, num_bytes_read);
webFile.close();
}
else {
// failed to open file
}
}
else {
// invalid file type
}
}
else if (http_req_type == HTTP_POST) {
// a POST HTTP request was received
}
else {
// unsupported HTTP request received
}
req_line_1[0] = 0;
req_line_index = 0;
got_line_1 = false;
// finished sending response and web page
return 1;
}
if (cl_char == '\n') {
currentLineIsBlank = true;
}
else if (cl_char != '\r') {
currentLineIsBlank = false;
}
} // if (client.available())
return 0;
}
// extract file name from first line of HTTP request
char GetRequestedHttpResource(char *req_line, char *file_name, char *file_type)
{
char request_type = HTTP_invalid; // 1 = GET, 2 = POST. 0 = invalid
char *str_token;
*file_type = FT_INVALID;
str_token = strtok(req_line, " "); // get the request type
if (strcmp(str_token, "GET") == 0) {
request_type = HTTP_GET;
str_token = strtok(NULL, " "); // get the file name
if (strcmp(str_token, "/") == 0) {
strcpy(file_name, "ARDUIN~2.HTM");
*file_type = FT_HTML;
}
else if (strlen(str_token) <= FILE_NAME_LEN) {
// file name is within allowed length
strcpy(file_name, str_token);
// get the file extension
str_token = strtok(str_token, ".");
str_token = strtok(NULL, ".");
if (strcmp(str_token, "htm") == 0) {*file_type = 0;}
else if (strcmp(str_token, "ico") == 0) {*file_type = 1;}
else if (strcmp(str_token, "css") == 0) {*file_type = 2;}
else if (strcmp(str_token, "js") == 0) {*file_type = 3;}
else if (strcmp(str_token, "jpg") == 0) {*file_type = 4;}
else if (strcmp(str_token, "png") == 0) {*file_type = 5;}
else if (strcmp(str_token, "gif") == 0) {*file_type = 6;}
else if (strcmp(str_token, "txt") == 0) {*file_type = 7;}
else {*file_type = 8;}
}
else {
// file name too long
}
}
else if (strcmp(str_token, "POST") == 0) {
request_type = HTTP_POST;
}
return request_type;
}