Buffered, bidirectional transfer through the default Serial channel

Dependencies:   mbed BufferedSerial

Revision:
0:8c6fe9fb4192
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Dec 16 12:37:54 2021 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file