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#include <OneWire.h>
#include <DallasTemperature.h>
#include <WiFi.h>
#include <WebServer.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <SPIFFS.h>
#define ONE_WIRE_BUS 10
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
const char* ssid = "taller";
const char* password = "fedecapo";
WebServer server(80);
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
File tempFile;
volatile bool buttonState1 = false;
volatile bool buttonState2 = false;
volatile bool buttonState3 = false;
bool loggingEnabled = false;
void IRAM_ATTR handleButton1() {
buttonState1 = !buttonState1;
}
void IRAM_ATTR handleButton2() {
buttonState2 = !buttonState2;
}
void IRAM_ATTR handleButton3() {
buttonState3 = !buttonState3;
}
void handleRoot() {
String html = "<html><head><meta http-equiv=\"refresh\" content=\"5\"></head><body>";
html += "<h1>Temperatura</h1>";
sensors.requestTemperatures();
float tempC = sensors.getTempCByIndex(0);
html += "<p>Temperatura: " + String(tempC) + " ℃</p>";
html += "</body></html>";
server.send(200, "text/html", html);
}
void handleDownload() {
if (server.hasArg("download")) {
tempFile = SPIFFS.open("/temperature.txt", "r");
if (tempFile) {
server.sendHeader("Content-Type", "text/plain");
server.sendHeader("Content-Disposition", "attachment; filename=temperature.txt");
server.streamFile(tempFile, "application/octet-stream");
tempFile.close();
} else {
server.send(404, "text/plain", "File not found");
}
} else {
String html = "<html><body>";
html += "<h1>Descargar archivo de temperatura</h1>";
html += "<p><a href=\"/download?download\">Descargar</a></p>";
html += "</body></html>";
server.send(200, "text/html", html);
}
}
void setup() {
Serial.begin(115200);
if (!SPIFFS.begin(true)) {
Serial.println("Error al inicializar SPIFFS");
}
tempFile = SPIFFS.open("/temperature.txt", "w");
if (!tempFile) {
Serial.println("Error al crear archivo de temperatura");
}
sensors.begin();
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
Serial.println(F("SSD1306 allocation failed"));
for(;;);
}
display.clearDisplay();
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(0,0);
display.println("Conectando");
display.display();
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Conectando a WiFi..");
}
Serial.println("Conectado a WiFi");
display.clearDisplay();
display.setCursor(0,0);
display.println("Conectado!");
display.println(WiFi.localIP());
display.display();
pinMode(25, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(25), handleButton1, FALLING);
pinMode(26, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(26), handleButton2, FALLING);
pinMode(27, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(27), handleButton3, FALLING);
server.on("/", handleRoot);
server.on("/download", handleDownload);
server.begin();
}
void loop() {
server.handleClient();
if (buttonState1) {
loggingEnabled = !loggingEnabled;
buttonState1 = false;
if (loggingEnabled)
{Serial.println("Comienzo registro");}
else
{Serial.println("Detengo registro");}
}
sensors.requestTemperatures();
float tempC = sensors.getTempCByIndex(0);
if (loggingEnabled) {
tempFile.println(tempC);
}
display.clearDisplay();
display.setCursor(0,0);
display.println(WiFi.localIP());
display.println(tempC);
display.display();
}