add PMS5003T get module firmware version code

src/PMS/PMS.cpp

@@ -245,6 +245,13 @@ uint16_t PMSBase::getTemp(void) { return toValue(&package[24]); }
  */
 uint16_t PMSBase::getHum(void) { return toValue(&package[26]); }
 
+/**
+ * @brief Get PMS500T firmware version code
+ * 
+ * @return uint8_t 
+ */
+uint8_t PMSBase::getFirmwareVersion(void) { return package[28]; }
+
 /**
  * @brief Convert PMS2.5 to US AQI unit
  *

src/PMS/PMS.h

@@ -26,6 +26,7 @@ public:
   /** For PMS5003T*/
   uint16_t getTemp(void);
   uint16_t getHum(void);
+  uint8_t getFirmwareVersion(void); 
 
   int pm25ToAQI(int pm02);
 

src/PMS/PMS5003T.cpp

@@ -102,7 +102,7 @@ bool PMS5003T::begin(void) {
     return false;
   }
 #endif
-
+  _ver = pms.getFirmwareVersion();
   this->_isBegin = true;
   return true;
 }
@@ -161,6 +161,13 @@ float PMS5003T::getRelativeHumidity(void) {
   return pms.getHum()/10.0f;
 }
 
+/**
+ * @brief Get module(s) firmware version
+ * 
+ * @return int Version code
+ */
+int PMS5003T::getFirmwareVersion(void) { return _ver; }
+
 /**
  * @brief Check device initialized or not
  *

src/PMS/PMS5003T.h

@@ -29,10 +29,12 @@ public:
   int convertPm25ToUsAqi(int pm25);
   float getTemperature(void);
   float getRelativeHumidity(void);
+  int getFirmwareVersion(void);
 
 private:
   bool _isBegin = false;
   bool _isSleep = false;
+  int _ver;   /** Firmware version code */
 
   BoardType _boardDef;
   const BoardDef *bsp;