hello,
I have Arduino atmega2560 + ethernet shield
I want to put my index on the SD.
I'm using this code for now (that does just the connection from arduino and internet):
// -*- c++ -*-
//
// Copyright 2010 Ovidiu Predescu <ovidiu@gmail.com>
// Date: December 2010
// Updated: 08-JAN-2012 for Arduno IDE 1.0 by <Hardcore@hardcoreforensics.com>
//
#include <pins_arduino.h>
#include <SPI.h>
#include <Ethernet.h>
#include <Flash.h>
#include <SD.h>
#include <TinyWebServer.h>
/****************VALUES YOU CHANGE*************/
// pin 4 is the SPI select pin for the SDcard
const int SD_CS = 4;
// pin 10 is the SPI select pin for the Ethernet
const int ETHER_CS = 10;
// Don't forget to modify the IP to an available one on your home network
byte ip[] = { 192, 168, 2, 10 };
/*********************************************/
static uint8_t mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
boolean file_handler(TinyWebServer& web_server);
boolean index_handler(TinyWebServer& web_server);
TinyWebServer::PathHandler handlers[] = {
// Work around Arduino's IDE preprocessor bug in handling /* inside
// strings.
//
// `put_handler' is defined in TinyWebServer
{"/", TinyWebServer::GET, &index_handler },
{"/upload/" "*", TinyWebServer::PUT, &TinyWebPutHandler::put_handler },
{"/" "*", TinyWebServer::GET, &file_handler },
{NULL},
};
const char* headers[] = {
"Content-Length",
NULL
};
TinyWebServer web = TinyWebServer(handlers, headers);
boolean has_filesystem = true;
Sd2Card card;
SdVolume volume;
SdFile root;
SdFile file;
void send_file_name(TinyWebServer& web_server, const char* filename) {
if (!filename) {
web_server.send_error_code(404);
web_server << F("Could not parse URL");
} else {
TinyWebServer::MimeType mime_type
= TinyWebServer::get_mime_type_from_filename(filename);
web_server.send_error_code(200);
web_server.send_content_type(mime_type);
web_server.end_headers();
if (file.open(&root, filename, O_READ)) {
Serial << F("Read file "); Serial.println(filename);
web_server.send_file(file);
file.close();
} else {
web_server << F("Could not find file: ") << filename << "\n";
}
}
}
boolean file_handler(TinyWebServer& web_server) {
char* filename = TinyWebServer::get_file_from_path(web_server.get_path());
send_file_name(web_server, filename);
free(filename);
return true;
}
boolean index_handler(TinyWebServer& web_server) {
send_file_name(web_server, "INDEX.HTM");
return true;
}
void file_uploader_handler(TinyWebServer& web_server,
TinyWebPutHandler::PutAction action,
char* buffer, int size) {
static uint32_t start_time;
static uint32_t total_size;
switch (action) {
case TinyWebPutHandler::START:
start_time = millis();
total_size = 0;
if (!file.isOpen()) {
// File is not opened, create it. First obtain the desired name
// from the request path.
char* fname = web_server.get_file_from_path(web_server.get_path());
if (fname) {
Serial << F("Creating ") << fname << "\n";
file.open(&root, fname, O_CREAT | O_WRITE | O_TRUNC);
free(fname);
}
}
break;
case TinyWebPutHandler::WRITE:
if (file.isOpen()) {
file.write(buffer, size);
total_size += size;
}
break;
case TinyWebPutHandler::END:
file.sync();
Serial << F("Wrote ") << file.fileSize() << F(" bytes in ")
<< millis() - start_time << F(" millis (received ")
<< total_size << F(" bytes)\n");
file.close();
}
}
void setup() {
Serial.begin(115200);
Serial << F("Free RAM: ") << FreeRam() << "\n";
pinMode(SS_PIN, OUTPUT); // set the SS pin as an output
// (necessary to keep the board as
// master and not SPI slave)
digitalWrite(SS_PIN, HIGH); // and ensure SS is high
// Ensure we are in a consistent state after power-up or a reset
// button These pins are standard for the Arduino w5100 Rev 3
// ethernet board They may need to be re-jigged for different boards
pinMode(ETHER_CS, OUTPUT); // Set the CS pin as an output
digitalWrite(ETHER_CS, HIGH); // Turn off the W5100 chip! (wait for
// configuration)
pinMode(SD_CS, OUTPUT); // Set the SDcard CS pin as an output
digitalWrite(SD_CS, HIGH); // Turn off the SD card! (wait for
// configuration)
// initialize the SD card.
Serial << F("Setting up SD card...\n");
// Pass over the speed and Chip select for the SD card
if (!card.init(SPI_FULL_SPEED, SD_CS)) {
Serial << F("card failed\n");
has_filesystem = false;
}
// initialize a FAT volume.
if (!volume.init(&card)) {
Serial << F("vol.init failed!\n");
has_filesystem = false;
}
if (!root.openRoot(&volume)) {
Serial << F("openRoot failed");
has_filesystem = false;
}
if (has_filesystem) {
// Assign our function to `upload_handler_fn'.
TinyWebPutHandler::put_handler_fn = file_uploader_handler;
}
// Initialize the Ethernet.
Serial << F("Setting up the Ethernet card...\n");
Ethernet.begin(mac, ip);
// Start the web server.
Serial << F("Web server starting...\n");
web.begin();
Serial << F("Ready to accept HTTP requests.\n");
}
void loop() {
if (has_filesystem) {
web.process();
}
}
I want to control a LED.
what should I use on the HTML? a form with method="get".
what should I read on the arduino then?
can you please help me?