add class comment

ESPMegaPRO-firmware/lib/ESPMegaPRO/ClimateCard.hpp

@@ -54,6 +54,15 @@ struct AirConditioner {
 };
 // This requires 3 bytes of FRAM
 
+/**
+ * @brief The ClimateCard class is a class for controlling an air conditioner
+ * 
+ * This class allows you to control an air conditioner using an IR LED.
+ * It is meant to be used with the ESPMega Climate Card.
+ * 
+ * @note You can also use a DHT22 or DS18B20 temperature sensor to get the room temperature (and humidity if using a DHT22). Although, this is optional.
+ * 
+ */
 class ClimateCard : public ExpansionCard {
     public:
         ClimateCard(uint8_t ir_pin, AirConditioner ac, uint8_t sensor_type, uint8_t sensor_pin);