Added include to provide dtostrf function

Signed-off-by: Frederic.Pillon <[email protected]>

Author: fpistm

Diff for: cores/arduino/avr/dtostrf.h

@@ -17,6 +17,8 @@
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
+#ifndef __DTOSTRF_H_
+#define __DTOSTRF_H_ 1
 
 #ifdef __cplusplus
 extern "C" {
@@ -27,3 +29,5 @@ char *dtostrf (double val, signed char width, unsigned char prec, char *sout);
 #ifdef __cplusplus
 }
 #endif
+
+#endif

Diff for: cores/arduino/utils.h

@@ -22,6 +22,8 @@
 #ifndef __UTILS_H
 #define __UTILS_H
 
+#include "avr/dtostrf.h"
+
 // Concatenate 2 strings
 #define CONCAT(s1, s2) (s1 s2)
 // Concatenate 2 strings separated by space