From 4f40706b2f26bb8f9b956ec578e8a60c849fae53 Mon Sep 17 00:00:00 2001
From: Shenggao Zhu <ShenggaoZhu@users.noreply.github.com>
Date: Mon, 30 May 2016 16:33:05 +0800
Subject: [PATCH] Fixed Print::printf("%f") with correct digits

Original printf() function for the float format (%f) outputs wrong number of digits after the decimal point (eg 1.02 is printed as 1.2).
---
 cores/arduino/Print.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cores/arduino/Print.cpp b/cores/arduino/Print.cpp
index f3749fe..eb65413 100644
--- a/cores/arduino/Print.cpp
+++ b/cores/arduino/Print.cpp
@@ -346,6 +346,9 @@ size_t Print::printf(const char *format, ...)
         if (l < 1)
           l = -l;
         l %= 100;
+        if(l < 10){
+         n += print(0);
+        }
         n += print(l);
       }
     }