From cac36d356b936d3562a633091c9b1d7a8e82bac6 Mon Sep 17 00:00:00 2001
From: Dario Salvi <dariosalvi78@gmail.com>
Date: Tue, 3 Oct 2017 12:46:07 +0100
Subject: [PATCH] fixes #35

---
 src/SD.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/SD.cpp b/src/SD.cpp
index 5f4e465..0649370 100644
--- a/src/SD.cpp
+++ b/src/SD.cpp
@@ -335,6 +335,8 @@ boolean callback_rmdir(SdFile& parentDir, const char *filePathComponent,
 
 
 boolean SDClass::begin(uint8_t csPin) {
+  if(root.isOpen()) root.close();
+
   /*
 
     Performs the initialisation required by the sdfatlib library.
@@ -348,6 +350,8 @@ boolean SDClass::begin(uint8_t csPin) {
 }
 
 boolean SDClass::begin(uint32_t clock, uint8_t csPin) {
+  if(root.isOpen()) root.close();
+
   return card.init(SPI_HALF_SPEED, csPin) &&
          card.setSpiClock(clock) &&
          volume.init(card) &&