more functions + fixes

Author: pilotak

MeteoFunctions.cpp

@@ -44,20 +44,41 @@ float MeteoFunctions::msToKmh(float ms) {
     return ms * 18 / 5;
 }
 
+/**
+ * Converts km/h to m/s
+ */
+float MeteoFunctions::kmhToMs(float kmh) {
+    return kmh * 5 / 18;
+}
+
 /**
  * Converts m/s to m/h
  */
 float MeteoFunctions::msToMph(float ms) {
     return ms / 0.44704;
 }
 
+/**
+ * Converts m/h to m/h m/s
+ */
+float MeteoFunctions::mphToMs(float mph) {
+    return mph * 2.236936;
+}
+
 /**
  * Converts m/s to knots
  */
-uint16_t MeteoFunctions::msToKn(float ms) {
+float MeteoFunctions::msToKn(float ms) {
     return ms * 1.94384449;
 }
 
+/**
+ * Converts knots to m/s
+ */
+float MeteoFunctions::knToMs(float kn) {
+    return kn * 0.5144444;
+}
+
 /**
  * Converts meters to feet
  */
@@ -72,6 +93,20 @@ float MeteoFunctions::ft_m(float feet) {
     return feet / 3.2808399;
 }
 
+/**
+ * Converts hPa to inHg
+ */
+float MeteoFunctions::hPa_inHg(float hPa) {
+    return 0.02952998751 * hPa;
+}
+
+/**
+ * Converts inHg to hPa
+ */
+float MeteoFunctions::inHg_hPa(float inHg) {
+    return inHg / 0.02952998751;
+}
+
 /**
  * Calculates humidex in Celsius
  */
@@ -99,7 +134,7 @@ float MeteoFunctions::dewPoint_c(float temp_c, float humidity) {
  * Calculates dew point in Fahrenheit
  */
 float MeteoFunctions::dewPoint_f(float temp_f, float humidity) {
-    return dewPoint_c(f_c(temp_f), humidity);
+    return c_f(dewPoint_c(f_c(temp_f), humidity));
 }
 
 /**
@@ -148,7 +183,7 @@ float MeteoFunctions::windChill_c(float temp_c, float wind_speed_ms) {
  * Calculates wind chill in Fahrenheit
  */
 float MeteoFunctions::windChill_f(float temp_f, float wind_speed_ms) {
-    return windChill_c(f_c(temp_f), wind_speed_ms);
+    return c_f(windChill_c(f_c(temp_f), wind_speed_ms));
 }
 
 /**
@@ -204,7 +239,7 @@ float MeteoFunctions::apparentTemp_c(float temp_c, float humidity, float wind_sp
  * Calculates apparent temperature in Celsius
  */
 float MeteoFunctions::apparentTemp_f(float temp_f, float humidity, float wind_speed_ms) {
-    return apparentTemp_c(f_c(temp_f), humidity, wind_speed_ms);
+    return c_f(apparentTemp_c(f_c(temp_f), humidity, wind_speed_ms));
 }
 
 /**

MeteoFunctions.h

@@ -32,28 +32,33 @@ SOFTWARE.
 class MeteoFunctions {
  public:
   MeteoFunctions();
-  float    c_f(float temp_c);
-  float    f_c(float temp_f);
-  float    msToKmh(float ms);
-  float    msToMph(float ms);
-  uint16_t msToKn(float ms);
-  float    m_ft(float meters);
-  float    ft_m(float feet);
-  float    humidex_c(float temp_c, float humidity);
-  float    humidex_f(float temp_f, float humidity);
-  float    dewPoint_c(float temp_c, float humidity);
-  float    dewPoint_f(float temp_f, float humidity);
-  uint8_t  beaufort(float wind_speed_ms);
-  float    windChill_c(float temp_c, float wind_speed_ms);
-  float    windChill_f(float temp_f, float wind_speed_ms);
-  float    heatIndex_c(float temp_c, float humidity);
-  float    heatIndex_f(float temp_f, float humidity);
-  float    apparentTemp_c(float temp_c, float humidity, float wind_speed_ms);
-  float    apparentTemp_f(float temp_f, float humidity, float wind_speed_ms);
-  float    cloudBase_m(float temp_c, float humidity);
-  float    cloudBase_f(float temp_f, float humidity);
-  float    relativePressure_c(float abs_pressure, float height_m, float temp_c);
-  float    relativePressure_f(float abs_pressure, float height_ft, float temp_f);
+  float   c_f(float temp_c);
+  float   f_c(float temp_f);
+  float   msToKmh(float ms);
+  float   kmhToMs(float kmh);
+  float   msToMph(float ms);
+  float   mphToMs(float mph);
+  float   msToKn(float ms);
+  float   knToMs(float kn);
+  float   m_ft(float meters);
+  float   ft_m(float feet);
+  float   hPa_inHg(float hPa);
+  float   inHg_hPa(float inHg);
+  float   humidex_c(float temp_c, float humidity);
+  float   humidex_f(float temp_f, float humidity);
+  float   dewPoint_c(float temp_c, float humidity);
+  float   dewPoint_f(float temp_f, float humidity);
+  uint8_t beaufort(float wind_speed_ms);
+  float   windChill_c(float temp_c, float wind_speed_ms);
+  float   windChill_f(float temp_f, float wind_speed_ms);
+  float   heatIndex_c(float temp_c, float humidity);
+  float   heatIndex_f(float temp_f, float humidity);
+  float   apparentTemp_c(float temp_c, float humidity, float wind_speed_ms);
+  float   apparentTemp_f(float temp_f, float humidity, float wind_speed_ms);
+  float   cloudBase_m(float temp_c, float humidity);
+  float   cloudBase_f(float temp_f, float humidity);
+  float   relativePressure_c(float abs_pressure, float height_m, float temp_c);
+  float   relativePressure_f(float abs_pressure, float height_ft, float temp_f);
 };
 
 #endif  // METEOFUNCTIONS_H

README.md

@@ -24,7 +24,7 @@ MeteoFunctions calc;
 float wind_speed = 2.0;   // m/s
 float temp = 21.0;        // °C
 float humidity = 60.0;    // %
-float pressure = 975.8;   // Pa
+float pressure = 975.8;   // hPa
 float above_sea = 408.0;  // m
 
 void setup() {

examples/MeteoFunctions/MeteoFunctions.ino

@@ -9,13 +9,13 @@ MeteoFunctions calc;
     float wind_speed = 2;     // m/s
     float temp = 21.0;        // °C
     float humidity = 60.0;    // %
-    float pressure = 975.8;   // Pa
+    float pressure = 975.8;   // hPa
     float above_sea = 408.0;  // m
 #elif defined(FAHRENHEIT)
     float wind_speed = 2;      // m/s
     float temp = 69.8;         // °F
     float humidity = 60.0;     // %
-    float pressure = 975.8;    // Pa
+    float pressure = 975.8;    // hPa
     float above_sea = 1338.5;  // ft
 #endif
 
@@ -98,8 +98,8 @@ void loop() {
     Serial.print(calc.cloudBase_f(temp, humidity));
 
     Serial.print(" feet\n: ");
-    Serial.print(calc.relativePressure_f(pressure, above_sea, temp));
-    Serial.println(" Pa");
+    Serial.print(calc.hPa_inHg(calc.relativePressure_f(pressure, above_sea, temp)));
+    Serial.println(" inHg");
 #endif
     delay(5000);
 }

library.json

@@ -13,7 +13,7 @@
       "email": "[email protected]",
       "url": "https://github.com/pilotak"
   },
-  "version": "1.0.1",
+  "version": "1.0.2",
   "frameworks": "arduino, mbed",
   "platforms": "*"
 }

library.properties

@@ -7,5 +7,5 @@ paragraph=extend your meteo station by calculating other meteorologist values
 url=https://github.com/pilotak/MeteoFunctions
 includes=MeteoFunctions.h
 category=Data Processing
-version=1.0.1
+version=1.0.2
 architectures=*