From 1be6bd7567c8ac6997e8a66de6f129381f97a7cb Mon Sep 17 00:00:00 2001
From: Alexandre Abadie <alexandre.abadie@inria.fr>
Date: Tue, 27 Oct 2020 15:31:42 +0100
Subject: [PATCH] sys/arduino: use fmt_float to print float values

---
 sys/Makefile.dep           | 1 +
 sys/arduino/serialport.cpp | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/Makefile.dep b/sys/Makefile.dep
index e96a15b89b..dd5a15ef1a 100644
--- a/sys/Makefile.dep
+++ b/sys/Makefile.dep
@@ -13,6 +13,7 @@ ifneq (,$(filter arduino,$(USEMODULE)))
   FEATURES_OPTIONAL += arduino_pwm
   FEATURES_OPTIONAL += periph_adc
   FEATURES_REQUIRED += periph_gpio
+  USEMODULE += fmt
   USEMODULE += xtimer
 endif
 
diff --git a/sys/arduino/serialport.cpp b/sys/arduino/serialport.cpp
index e7c4f5e0c4..9b527b3efb 100644
--- a/sys/arduino/serialport.cpp
+++ b/sys/arduino/serialport.cpp
@@ -22,6 +22,7 @@ extern "C" {
 #include <string.h>
 #include <stdio.h>
 
+#include "fmt.h"
 #include "irq.h"
 }
 
@@ -148,7 +149,7 @@ size_t SerialPort::print(float val)
 size_t SerialPort::print(float val, int format)
 {
     char buf[64];
-    size_t len = sprintf(buf, "%.*f", format, (double)val);
+    size_t len = fmt_float(buf, val, format);
     write(buf, len);
     return len;
 }