Merge pull request mrRobot62#2 from joscha/log-double

feat: allow double and float

Author: thijse

ArduinoLog.cpp

@@ -85,6 +85,11 @@ void Logging::printFormat(const char format, va_list *args) {
     return;
   }
 
+  if( format == 'D' || format == 'F') {
+    _logOutput->print(va_arg( *args, double ));
+    return;
+  }
+
   if( format == 'x' ) {
     _logOutput->print(va_arg( *args, int ),HEX);
     return;

README.md

@@ -108,6 +108,7 @@ where the format string can be used to format the log variables
 * %B	display as  binary number, prefixed by `0b'
 * %t	display as boolean value "t" or "f"
 * %T	display as boolean value "true" or "false"
+* %D,%F display as double value
 ```
 
 The format string may come from flash memory.

examples/Log/Log.ino

@@ -11,6 +11,8 @@ long         longValue1, longValue2;
 bool         boolValue1, boolValue2;
 const char * charArray    = "this is a string";
 String       stringValue1 = "this is a string";
+float        floatValue;
+double       doubleValue;
 
 void setup() {
     // Set up serial port and wait until connected
@@ -41,6 +43,8 @@ void loop() {
     longValue2 = random(100000000);
     boolValue1 = random(2)==0;
     boolValue2 = random(2)==1;
+    floatValue = 12.34;
+    doubleValue= 1234.56789;
 
     Log.notice   (  "Log as Info with integer values : %d, %d" CR                  , intValue1,  intValue2);
     Log.notice   (F("Log as Info with hex values     : %x, %X" CR                 ), intValue1,  intValue1);
@@ -51,12 +55,16 @@ void loop() {
     Log.notice   (  "Log as Info with bool values    : %t, %T" CR                  , boolValue1, boolValue2);
     Log.notice   (F("Log as Info with string value   : %s" CR                     ), charArray);
     Log.notice   (  "Log as Info with string value   : %s" CR                      , stringValue1.c_str());
+    Log.notice   (F("Log as Info with float value   : %F" CR                      ), floatValue);
+    Log.notice   (  "Log as Info with float value   : %F" CR                       , floatValue);
+    Log.notice   (F("Log as Info with double value   : %D" CR                     ), doubleValue);
+    Log.notice   (  "Log as Info with double value   : %D" CR                      , doubleValue);
     Log.notice   (F("Log as Debug with mixed values  : %d, %d, %l, %l, %t, %T" CR ), intValue1 , intValue2,
                 longValue1, longValue2, boolValue1, boolValue2);
     Log.trace    (  "Log as Trace with bool value    : %T" CR                      , boolValue1);
     Log.warning  (  "Log as Warning with bool value  : %T" CR                      , boolValue1);
     Log.error    (  "Log as Error with bool value    : %T" CR                      , boolValue1);
     Log.fatal    (  "Log as Fatal with bool value    : %T" CR                      , boolValue1);
-    Log.verbose  (F("Log as Vebose with bool value   : %T" CR CR CR               ), boolValue2);
+    Log.verbose  (F("Log as Verbose with bool value   : %T" CR CR CR               ), boolValue2);
     delay(5000);
 }