Working version. ADXL355 data saved to microSD.

Revision:
0:e2579e8d9b13
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sd-driver.lib	Fri Sep 29 12:53:50 2017 +0000
@@ -0,0 +1,1 @@
+https://github.com/armmbed/sd-driver/#1cb007fb3809a5e2d56d179e81332615c0a9b9fd