3rd revision of my mbedOs ble weight program

Revision:
78:08c7eae77646
Parent:
77:cda101593438
--- a/mbed-os.lib	Mon Feb 25 16:44:26 2019 +0000
+++ b/mbed-os.lib	Wed Feb 27 13:02:06 2019 +0000
@@ -1,1 +1,1 @@
-https://github.com/ARMmbed/mbed-os/#ecb3c8c837162c73537bd0f3592c6e2a42994045
+https://github.com/ARMmbed/mbed-os/#51d55508e8400b60af467005646c4e2164738d48