diff --git a/vulpes/src/main.cpp b/vulpes/src/main.cpp new file mode 100644 index 0000000..3f84526 --- /dev/null +++ b/vulpes/src/main.cpp @@ -0,0 +1,182 @@ +/********* + Rui Santos + Complete project details at https://RandomNerdTutorials.com/esp32-esp8266-input-data-html-form/ + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files. + + The above copyright notice and this permission notice shall be included in all + copies or substantial portions of the Software. +*********/ + +// include wifi password +#include "config.h" +#include +#include +#include +#include +#include + +// download zip from https://github.com/me-no-dev/ESPAsyncWebServer and install. +#include + +AsyncWebServer server(80); + +// Read from config.h +const char* ssid = WIFI_SSID; +const char* password = WIFI_PASSWORD; + +const char* PARAM_STRING = "inputString"; +const char* PARAM_INT = "inputInt"; +const char* PARAM_FLOAT = "inputFloat"; + +// HTML web page to handle 3 input fields (inputString, inputInt, inputFloat) +const char index_html[] PROGMEM = R"rawliteral( + + ESP Input Form + + +
+ inputString (current value %inputString%): + +

+
+ inputInt (current value %inputInt%): + +

+
+ inputFloat (current value %inputFloat%): + +
+ +)rawliteral"; + +void notFound(AsyncWebServerRequest *request) { + request->send(404, "text/plain", "Not found"); +} + +String readFile(fs::FS &fs, const char * path){ + Serial.printf("Reading file: %s\r\n", path); + File file = fs.open(path, "r"); + if(!file || file.isDirectory()){ + Serial.println("- empty file or failed to open file"); + return String(); + } + Serial.println("- read from file:"); + String fileContent; + while(file.available()){ + fileContent+=String((char)file.read()); + } + file.close(); + Serial.println(fileContent); + return fileContent; +} + +void writeFile(fs::FS &fs, const char * path, const char * message){ + Serial.printf("Writing file: %s\r\n", path); + File file = fs.open(path, "w"); + if(!file){ + Serial.println("- failed to open file for writing"); + return; + } + if(file.print(message)){ + Serial.println("- file written"); + } else { + Serial.println("- write failed"); + } + file.close(); +} + +// Replaces placeholder with stored values +String processor(const String& var){ + //Serial.println(var); + if(var == "inputString"){ + return readFile(SPIFFS, "/inputString.txt"); + } + else if(var == "inputInt"){ + return readFile(SPIFFS, "/inputInt.txt"); + } + else if(var == "inputFloat"){ + return readFile(SPIFFS, "/inputFloat.txt"); + } + return String(); +} + +void setup() { + Serial.begin(115200); + // Initialize SPIFFS + #ifdef ESP32 + if(!SPIFFS.begin(true)){ + Serial.println("An Error has occurred while mounting SPIFFS"); + return; + } + #else + if(!SPIFFS.begin()){ + Serial.println("An Error has occurred while mounting SPIFFS"); + return; + } + #endif + + WiFi.mode(WIFI_STA); + WiFi.begin(ssid, password); + if (WiFi.waitForConnectResult() != WL_CONNECTED) { + Serial.println("WiFi Failed!"); + return; + } + Serial.println(); + Serial.print("IP Address: "); + Serial.println(WiFi.localIP()); + + // Send web page with input fields to client + server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){ + request->send_P(200, "text/html", index_html, processor); + }); + + // Send a GET request to /get?inputString= + server.on("/get", HTTP_GET, [] (AsyncWebServerRequest *request) { + String inputMessage; + // GET inputString value on /get?inputString= + if (request->hasParam(PARAM_STRING)) { + inputMessage = request->getParam(PARAM_STRING)->value(); + writeFile(SPIFFS, "/inputString.txt", inputMessage.c_str()); + } + // GET inputInt value on /get?inputInt= + else if (request->hasParam(PARAM_INT)) { + inputMessage = request->getParam(PARAM_INT)->value(); + writeFile(SPIFFS, "/inputInt.txt", inputMessage.c_str()); + } + // GET inputFloat value on /get?inputFloat= + else if (request->hasParam(PARAM_FLOAT)) { + inputMessage = request->getParam(PARAM_FLOAT)->value(); + writeFile(SPIFFS, "/inputFloat.txt", inputMessage.c_str()); + } + else { + inputMessage = "No message sent"; + } + Serial.println(inputMessage); + request->send(200, "text/plain", inputMessage); + }); + server.onNotFound(notFound); + server.begin(); +} + +void loop() { +// // To access your stored values on inputString, inputInt, inputFloat +// String yourInputString = readFile(SPIFFS, "/inputString.txt"); +// Serial.print("*** Your inputString: "); +// Serial.println(yourInputString); + +// int yourInputInt = readFile(SPIFFS, "/inputInt.txt").toInt(); +// Serial.print("*** Your inputInt: "); +// Serial.println(yourInputInt); + +// float yourInputFloat = readFile(SPIFFS, "/inputFloat.txt").toFloat(); +// Serial.print("*** Your inputFloat: "); +// Serial.println(yourInputFloat); +// delay(5000); +} \ No newline at end of file