update hcsr04.cpp by changing 20000 to 2000

Dependencies:   Stepper mbed SDFileSystem Ultrasonic PinDetect millis

History

1.17; default tip

2019-01-18, by rschimpf78 [Fri, 18 Jan 2019 00:22:13 +0000] rev 8

1.17;


1.9.19

2019-01-10, by rschimpf78 [Thu, 10 Jan 2019 01:32:38 +0000] rev 7

1.9.19


1220

2018-12-19, by rschimpf78 [Wed, 19 Dec 2018 19:44:16 +0000] rev 6

1220


1219

2018-12-19, by rschimpf78 [Wed, 19 Dec 2018 19:41:43 +0000] rev 5

1219


reliability

2018-11-16, by rschimpf78 [Fri, 16 Nov 2018 21:42:21 +0000] rev 4

reliability


no change

2018-10-13, by rschimpf78 [Sat, 13 Oct 2018 02:19:16 +0000] rev 3

no change


code

2018-09-14, by rschimpf78 [Fri, 14 Sep 2018 19:10:45 +0000] rev 2

code


Added tag stuff for changeset 88834eed3de0

2018-03-18, by root@developer-sjc-cyan-compiler.local.mbed.org [Sun, 18 Mar 2018 23:51:04 +0000] rev 1

Added tag stuff for changeset 88834eed3de0


done stuff

2018-03-18, by rschimpf78 [Sun, 18 Mar 2018 02:40:25 +0000] rev 0

done