fix: allowing custom decimal places also for double

Author: vlastahajek

CHANGELOG.md

@@ -6,6 +6,7 @@
 ### Documentation
 
 ### Fixes
+- [#108](https://github.com/tobiasschuerg/InfluxDB-Client-for-Arduino/pull/108) - Added optional param for specifying decimal places of double.: `void Point::addField(String name, double value, int decimalPlaces = 2)`
 
 ## 3.4.0 [2020-10-02]
 ### Features

src/Point.h

@@ -41,7 +41,7 @@ class Point {
     void addTag(String name, String value);
     // Add field with various types
     void addField(String name, float value, int decimalPlaces = 2)         { if(!isnan(value)) putField(name, String(value, decimalPlaces)); }
-    void addField(String name, double value)        { if(!isnan(value)) putField(name, String(value)); }
+    void addField(String name, double value, int decimalPlaces = 2)        { if(!isnan(value)) putField(name, String(value, decimalPlaces)); }
     void addField(String name, char value)          { addField(name, String(value).c_str()); }
     void addField(String name, unsigned char value) { putField(name, String(value)+"i"); }
     void addField(String name, int value)           { putField(name, String(value)+"i"); }

test/test.ino

@@ -7,10 +7,13 @@
 #define INFLUXDB_CLIENT_TESTING
 #include <InfluxDbClient.h>
 #include <InfluxDbCloud.h>
+
 #if defined(ESP32)
+#include <WiFi.h>
 String chipId = String((unsigned long)ESP.getEfuseMac());
 String deviceName = "ESP32";
 #elif defined(ESP8266)
+#include <ESP8266WiFi.h>
 String chipId = String(ESP.getChipId());
 String deviceName = "ESP8266";
 #endif