lab 2 part 1

Revision:
3:8d87cbabe37e
Parent:
2:cd1fe8c29793
--- a/mbed-os.lib	Tue Jan 16 18:02:44 2018 +0000
+++ b/mbed-os.lib	Tue Jan 15 09:47:06 2019 +0000
@@ -1,1 +1,1 @@
-https://github.com/ARMmbed/mbed-os/#96d9a00d0a1d25095b330095fa81c40f7741777c
+https://github.com/ARMmbed/mbed-os/#c966348d3f9ca80843be7cdc9b748f06ea73ced0