see: https://developer.mbed.org/users/phsfan/notebook/phsshield/

Dependencies:   Stewitter_a3gs a3gs mbed

Revision:
0:555e9c594bc5
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/a3gs.lib	Wed Apr 01 06:22:19 2015 +0000
@@ -0,0 +1,1 @@
+http://developer.mbed.org/users/phsfan/code/a3gs/#ca471c239d5f