I do it

Dependencies:   MCP23S17 mbed

Revision:
0:34f3e96385fa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MCP23S17.lib	Thu Oct 05 18:52:46 2017 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/romilly/code/MCP23S17/#068b1e8909bb