Refactor MAX7219 initialization and update MQ7 reading delay

hardware/include/MAX7219.hpp

@@ -4,7 +4,6 @@
 
 #define HARDWARE_TYPE MD_MAX72XX::FC16_HW
 #define MAX_DEVICES 4 // 4 modulos 8x8
-
 #define DATA_PIN 19
 #define CS_PIN 18
 #define CLK_PIN 17

hardware/src/lib/actuator/MAX7219.cpp

@@ -5,7 +5,7 @@ MD_Parola display = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVI
 void MAX7219_Init()
 {
     display.begin();
-    display.setIntensity(1); // 0-15
+    display.setIntensity(15); // 0-15
     display.displayClear();
 }
 

hardware/src/lib/sensor/MQ7.cpp

@@ -8,6 +8,7 @@ void MQ7_Init()
  
 void MQ7_Read(float &sensorVolt, float &RSAir, float &R0, float &sensorValue)
 {
+    // preheat
     analogWrite(ANALOG_MQ7, 1023);
     delay(60000);
     analogWrite(ANALOG_MQ7, (1023/5)*1.4 );
@@ -15,16 +16,11 @@ void MQ7_Read(float &sensorVolt, float &RSAir, float &R0, float &sensorValue)
     for(int i = 0; i<100; i++)
     { 
         sensorValue = sensorValue + analogRead(ANALOG_MQ7);
-        delay(90000);
+        delay(1200);
     }
 
     sensorValue = sensorValue/100.0;
     sensorVolt = sensorValue/1024*5.0;
     RSAir = (5.0-sensorVolt)/sensorVolt;
     R0 = RSAir/(26+(1/3));
-
-    Serial.print("R0 = ");
-    Serial.println(R0);
-
-    delay(1000);
 }

hardware/src/main.cpp

@@ -13,19 +13,19 @@ void setup()
 {
     Serial.begin(9600);
 
-    Serial.println("Iniciando...");
+    /*Serial.println("Iniciando...");
     MQ7_Init();
     Serial.println("Sensor MQ7 inicializado");
     BME280_Init();
     Serial.println("Sensor BME280 inicializado");
     GPS_Init();
-    Serial.println("GPS inicializado");
+    Serial.println("GPS inicializado"); */
     MAX7219_Init();
     Serial.println("Display inicializado");
 
-    prettyReadBME280();
-    prettyReadMQ7();
+    //prettyReadBME280();
     testMatrix();
+    //prettyReadMQ7();
 }
 
 void loop()
@@ -65,6 +65,7 @@ void testMatrix()
 {
     Serial.println("Escribiendo en el display...");
     MAX7219_DisplayText("Prueba de texto", PA_LEFT, 100, 500);
+    
 }
 
 uint32_t getChipID()