From ed672deb7447e8c229fa5bfef54189dceb0841a8 Mon Sep 17 00:00:00 2001
From: Fede85 <f.vanzati@gmail.com>
Date: Thu, 20 Jun 2013 13:24:27 +0200
Subject: modified SDclass.begin() check for sd presence and added the
 Datalogger example

---
 libraries/Bridge/FileIO.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'libraries/Bridge/FileIO.cpp')

diff --git a/libraries/Bridge/FileIO.cpp b/libraries/Bridge/FileIO.cpp
index c66f937..c49c2b4 100644
--- a/libraries/Bridge/FileIO.cpp
+++ b/libraries/Bridge/FileIO.cpp
@@ -160,7 +160,13 @@ const char *File::name() {
 
 
 boolean SDClass::begin() {
-  return true;
+  Process chksd;
+  int res = chksd.runShellCommand(F("cat /sys/bus/scsi/drivers/sd/*/block/sda/size"));
+  if (res == 0) {
+    if (chksd.peek() != '0')
+    return true; 
+  }
+  return false;
 }
 
 File SDClass::open(const char *filename, uint8_t mode) {
-- 
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