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hardware/esp8266com/esp8266/libraries/ESP8266WebServer/examples/SDWebServer/SDWebServer.ino
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| /* | ||
| SDWebServer - Example WebServer with SD Card backend for esp8266 | ||
| Copyright (c) 2015 Hristo Gochkov. All rights reserved. | ||
| This file is part of the ESP8266WebServer library for Arduino environment. | ||
| This library is free software; you can redistribute it and/or | ||
| modify it under the terms of the GNU Lesser General Public | ||
| License as published by the Free Software Foundation; either | ||
| version 2.1 of the License, or (at your option) any later version. | ||
| This library is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| Lesser General Public License for more details. | ||
| You should have received a copy of the GNU Lesser General Public | ||
| License along with this library; if not, write to the Free Software | ||
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | ||
| Have a FAT Formatted SD Card connected to the SPI port of the ESP8266 | ||
| The web root is the SD Card root folder | ||
| File extensions with more than 3 charecters are not supported by the SD Library | ||
| File Names longer than 8 charecters will be truncated by the SD library, so keep filenames shorter | ||
| index.htm is the default index (works on subfolders as well) | ||
| */ | ||
|
|
||
| #include <ESP8266WiFi.h> | ||
| #include <WiFiClient.h> | ||
| #include <ESP8266WebServer.h> | ||
| #include <ESP8266mDNS.h> | ||
| #include <SPI.h> | ||
| #include <SD.h> | ||
|
|
||
| //do not go larger than 1460 bytes as that is the maximum that could fit in a packet | ||
| #define WWW_BUF_SIZE 1460 | ||
|
|
||
| const char* ssid = "**********"; | ||
| const char* password = "**********"; | ||
| const char* hostname = "esp8266sd"; | ||
|
|
||
| MDNSResponder mdns; | ||
| ESP8266WebServer server(80); | ||
|
|
||
| static bool hasSD = false; | ||
|
|
||
| bool loadFromSdCard(String path){ | ||
| String dataType = "text/plain"; | ||
| //handle default index | ||
| if(path.endsWith("/")) path += "index.htm"; | ||
|
|
||
| //set proper Content-Type for the most common extensions | ||
| if(path.endsWith(".src")) path = path.substring(0, path.lastIndexOf(".")); | ||
| else if(path.endsWith(".htm")) dataType = "text/html"; | ||
| else if(path.endsWith(".css")) dataType = "text/css"; | ||
| else if(path.endsWith(".js")) dataType = "application/javascript"; | ||
| else if(path.endsWith(".png")) dataType = "image/png"; | ||
| else if(path.endsWith(".gif")) dataType = "image/gif"; | ||
| else if(path.endsWith(".jpg")) dataType = "image/jpeg"; | ||
| else if(path.endsWith(".ico")) dataType = "image/x-icon"; | ||
| else if(path.endsWith(".xml")) dataType = "text/xml"; | ||
| else if(path.endsWith(".pdf")) dataType = "application/pdf"; | ||
| else if(path.endsWith(".zip")) dataType = "application/zip"; | ||
|
|
||
| //Try to open the file | ||
| File dataFile = SD.open(path.c_str()); | ||
|
|
||
| //if it's a folder, try to open the default index | ||
| if(dataFile && dataFile.isDirectory()){ | ||
| path += "/index.htm"; | ||
| dataType = "text/html"; | ||
| dataFile = SD.open(path.c_str()); | ||
| } | ||
|
|
||
| //and finally if the file exists, stream the content to the client | ||
| if (dataFile) { | ||
| WiFiClient client = server.client(); | ||
| //send the file headers | ||
| String head = "HTTP/1.1 200 OK\r\nContent-Type: "; | ||
| head += dataType; | ||
| head += "\r\nContent-Length: "; | ||
| head += dataFile.size(); | ||
| head += "\r\n\r\n"; | ||
| client.print(head); | ||
|
|
||
| //partition the data packets to fit in a TCP packet (1460 bytes MAX) | ||
| uint8_t obuf[WWW_BUF_SIZE]; | ||
| while (dataFile.available() > WWW_BUF_SIZE){ | ||
| dataFile.read(obuf, WWW_BUF_SIZE); | ||
| client.write(obuf, WWW_BUF_SIZE); | ||
| } | ||
| //stream the last data left (size is at most WWW_BUF_SIZE bytes) | ||
| uint16_t leftLen = dataFile.available(); | ||
| dataFile.read(obuf, leftLen); | ||
| client.write(obuf, leftLen); | ||
|
|
||
| dataFile.close(); | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| void tryLoadFromSdCard(){ | ||
| String message = "FileNotFound\n\n"; | ||
| if(hasSD){ | ||
| //try to load the URL from SD Card | ||
| if(loadFromSdCard(server.uri())) return; | ||
| } else { | ||
| message = "SDCARD Not Detected\n\n"; | ||
| } | ||
| server.send(404, "text/plain", message); | ||
| } | ||
|
|
||
| void setup(void){ | ||
| uint8_t i = 0; | ||
| Serial.begin(115200); | ||
|
|
||
| //setup WiFi | ||
| WiFi.begin(ssid, password); | ||
| Serial.print("\nConnecting to "); | ||
| Serial.println(ssid); | ||
|
|
||
| //wait for WiFi to connect | ||
| while (WiFi.status() != WL_CONNECTED && i++ < 20) delay(500); | ||
|
|
||
| //check if we have connected? | ||
| if(i == 20){ | ||
| Serial.print("Could not connect to"); | ||
| Serial.println(ssid); | ||
| //stop execution and wait forever | ||
| while(1) delay(500); | ||
| } | ||
| Serial.print("Connected! IP address: "); | ||
| Serial.println(WiFi.localIP()); | ||
|
|
||
| //start mDNS Server | ||
| if (mdns.begin(hostname, WiFi.localIP())) { | ||
| Serial.println("MDNS responder started"); | ||
| Serial.print("You can now connect to http://"); | ||
| Serial.print(hostname); | ||
| Serial.println(".local"); | ||
| } | ||
|
|
||
| //Attach handler | ||
| server.onNotFound(tryLoadFromSdCard); | ||
|
|
||
| //start server | ||
| server.begin(); | ||
| Serial.println("HTTP server started"); | ||
|
|
||
| //init SD Card | ||
| if (SD.begin(SS)){ | ||
| Serial.println("SD Card initialized."); | ||
| hasSD = true; | ||
| } | ||
| } | ||
|
|
||
| void loop(void){ | ||
| mdns.update(); | ||
| server.handleClient(); | ||
| } |
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