Leong Kum Loong (NYP) / HCSR04

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Dependents:   Utrasonic_Example

Diff: HCSR04.h

Revision:
0:3373f4da46c1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HCSR04.h	Sun Dec 03 18:55:59 2017 +0000
@@ -0,0 +1,22 @@
+/*
+    HCSR04.h
+    Written by Leong Kum Loong.
+    04 Dec 2017, REV. 0
+    
+    All routines and functions in this library are written by me solely.
+    Library for HC-SR04 Ultrasonic Ranging sensor.
+    Library uses pins p21 to send pulse to sensor Trigger input & p22 to read sensor Echo output.
+    This is assuming velocity of sound rate from ultrasonic pulse is 340m/s.
+*/
+
+#ifndef HCSR04_h
+#define HCSR04_h
+#include "mbed.h"
+
+//1 for CM & 2 for INCH
+void getDistance(int unit=1);
+
+//Read current distance.
+float readDistance();
+
+#endif
\ No newline at end of file