for distance sensor

Dependencies:   mbed HCSR04

Revision:
0:47ec319db65c
diff -r 000000000000 -r 47ec319db65c HCSR04.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HCSR04.lib	Fri Nov 15 18:26:05 2019 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/grantphillips/code/HCSR04/#8286d0de19ce