Simple ranging example, using polling, with only the X-Nucleo_53L1A1 expansion board.

Dependencies:   X_NUCLEO_53L1A1_mbed

Revision:
0:6b7696e7df5e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Fri May 17 10:44:38 2019 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#0063e5de32fc575f061244c96ac60c41c07bd2e6