sample code for UsusamaSerial

Dependencies:   UsusamaSerial

Revision:
0:a36cb9a7e8cf
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Fri Aug 20 08:33:19 2021 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#3377f083b3a6bd7a1b45ed2cea5cf083b9007527