From 748f25b25190be746539a2ed4e2f5ae408537463 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Jos=C3=A9=20Plaza=20de=20los=20Reyes=20Quiroz?=
 <emilioplazadelosreyes@gmail.com>
Date: Tue, 27 Feb 2018 18:12:32 -0300
Subject: [PATCH] SD end() method

We need call SdFile::close() only if Sd2Card has no errors because SdFile::sync() is called.
---
 libraries/SD/src/SD.cpp | 11 +++++++++++
 libraries/SD/src/SD.h   |  3 +++
 2 files changed, 14 insertions(+)

diff --git a/libraries/SD/src/SD.cpp b/libraries/SD/src/SD.cpp
index ce575128b7..8065da26ee 100644
--- a/libraries/SD/src/SD.cpp
+++ b/libraries/SD/src/SD.cpp
@@ -350,6 +350,17 @@ boolean SDClass::begin(uint8_t csPin, uint32_t speed) {
          root.openRoot(volume);
 }
 
+// Ends SD card connection
+void SDClass::end() {
+    if(card.errorCode() == 0 && root.isOpen()) {
+        root.close();
+    }
+
+    root = SdFile();
+    volume = SdVolume();
+    card = Sd2Card();
+}
+
 // this little helper is used to traverse paths
 SdFile SDClass::getParentDir(const char *filepath, int *index) {
   // get parent directory
diff --git a/libraries/SD/src/SD.h b/libraries/SD/src/SD.h
index 38ad793598..9864539025 100644
--- a/libraries/SD/src/SD.h
+++ b/libraries/SD/src/SD.h
@@ -89,6 +89,9 @@ class SDClass {
   // before other methods are used.
   boolean begin(uint8_t csPin = SD_CHIP_SELECT_PIN, uint32_t speed = SPI_HALF_SPEED);
 
+  // Ends SD card connection
+  void end();
+
   // Open the specified file/directory with the supplied mode (e.g. read or
   // write, etc). Returns a File object for interacting with the file.
   // Note that currently only one file can be open at a time.