Refactor project structure: update Java version, remove MQ7 files, and add BMP280 support

hardware/src/main.cpp

@@ -1,8 +1,19 @@
 #include "main.hpp"
 
 const uint32_t deviceId = getChipID();
-String response;
+
+// instances
 HTTPClient httpClient;
+BMP280_DEV bme;
+
+// HTTP Request
+String response;
+
+// MQ7
+float sensorVolt, sensorValue, RSAir, R0; 
+
+// BMP280
+float temperature, humidity, pressure, altitude;
 
 uint32_t getChipID()
 {
@@ -22,13 +33,11 @@ void setup() {
         Serial.print("Error connecting to WiFi");
     }
 
-    MQ7_init();
-
     // test get
     getRequest(httpClient, "http://172.20.10.7:8082/api/v1/sensors/1/values", response);
     deserializeSensorValue(httpClient, httpClient.GET());
 }
  
 void loop() {
-    MQ7_read();
+    
 }