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raymond |
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#include <FS.h>
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#include <LittleFS.h>
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#include <AsyncFsWebServer.h> // https://github.com/cotestatnt/async-esp-fs-webserver/
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#define FILESYSTEM LittleFS
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AsyncFsWebServer server(FILESYSTEM, 80, "esphost");
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//////////////////////////// HTTP Request Handlers ////////////////////////////////////
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void getDefaultValue (AsyncWebServerRequest *request) {
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// Send to client default values as JSON string because it's very easy to parse JSON in Javascript
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String defaultVal = "{\"car\":\"Ferrari\", \"firstname\":\"Enzo\", \"lastname\":\"Ferrari\",\"age\":90}";
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request->send(200, "text/json", defaultVal);
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}
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void handleForm1(AsyncWebServerRequest *request) {
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String reply;
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if(request->hasArg("cars")) {
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reply += "You have submitted with Form1: ";
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reply += request->arg("cars");
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}
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Serial.println(reply);
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request->send(200, "text/plain", reply);
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}
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void handleForm2(AsyncWebServerRequest *request) {
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String reply;
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if(request->hasArg("firstname")) {
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reply += "You have submitted with Form2: ";
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reply += request->arg("firstname");
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}
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if(request->hasArg("lastname")) {
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reply += " ";
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reply += request->arg("lastname");
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}
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if(request->hasArg("age")) {
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reply += ", age: ";
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reply += request->arg("age");
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}
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Serial.println(reply);
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request->send(200, "text/plain", reply);
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}
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//////////////////////////////// Filesystem /////////////////////////////////////////
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void listDir(fs::FS &fs, const char * dirname, uint8_t levels){
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Serial.printf("\nListing directory: %s\n", dirname);
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File root = fs.open(dirname, "r");
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if (!root) {
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Serial.println("- failed to open directory");
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return;
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}
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if (!root.isDirectory()) {
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Serial.println(" - not a directory");
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return;
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}
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File file = root.openNextFile();
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while (file) {
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if (file.isDirectory()) {
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if (levels) {
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#ifdef ESP32
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listDir(fs, file.path(), levels - 1);
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#elif defined(ESP8266)
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listDir(fs, file.fullName(), levels - 1);
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#endif
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}
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} else {
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Serial.printf("|__ FILE: %s (%d bytes)\n",file.name(), file.size());
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}
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file = root.openNextFile();
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}
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}
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bool startFilesystem() {
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if (FILESYSTEM.begin()){
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listDir(FILESYSTEM, "/", 1);
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return true;
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}
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else {
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Serial.println("ERROR on mounting filesystem. It will be reformatted!");
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FILESYSTEM.format();
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ESP.restart();
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}
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return false;
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}
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void setup(){
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Serial.begin(115200);
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// FILESYSTEM INIT
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startFilesystem();
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// Try to connect to WiFi (will start AP if not connected after timeout)
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if (!server.startWiFi(10000)) {
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Serial.println("\nWiFi not connected! Starting AP mode...");
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server.startCaptivePortal("ESP_AP", "123456789", "/setup");
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}
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// Add custom page handlers to webserver
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server.on("/getDefault", HTTP_GET, getDefaultValue);
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server.on("/setForm1", HTTP_POST, handleForm1);
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server.on("/setForm2", HTTP_POST, handleForm2);
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// Enable ACE FS file web editor and add FS info callback function
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server.enableFsCodeEditor();
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// Start server
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server.init();
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Serial.print(F("ESP Web Server started on IP Address: "));
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Serial.println(server.getServerIP());
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Serial.println(F(
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"This is \"handleFormData.ino\" example.\n"
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"Open /setup page to configure optional parameters.\n"
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"Open /edit page to view, edit or upload example or your custom webserver source files."
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));
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}
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void loop() {
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// This delay is required in order to avoid loopTask() WDT reset on ESP32
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delay(1);
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}
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