Basic implementation of watchdog

Dependencies:   STM_ResetSupervisor USBDevice

Revision:
0:975e02a70882
diff -r 000000000000 -r 975e02a70882 .gitignore
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.gitignore	Tue Jun 25 23:31:34 2019 +0000
@@ -0,0 +1,4 @@
+.build
+.mbed
+projectfiles
+*.py*