Example of using SD card with Mbed OS5.

Revision:
0:87642278ede6
Child:
2:d08c053d5a35
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed_app.json	Wed Feb 06 18:46:53 2019 +0000
@@ -0,0 +1,7 @@
+{
+    "target_overrides": {
+        "LPC1768": {
+            "target.components_add": ["SD"]
+        }
+    }
+}
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