Diff: HCSR04.h

Revision:

0:0bda99bb39a4

Child:

1:62f97e90a58c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HCSR04.h	Tue Oct 18 14:32:12 2011 +0000
@@ -0,0 +1,39 @@
+//Library for controlling ultrasonic module HCSR04
+//Ported by hiawoood from arduino library orgininally created by ITead studio.
+//Instantiate object by supplying the proper pin numbers of "trigger" and "echo"
+//e.g. 
+/*
+        int main() {
+            Ultrasonic sensor(p5, p6);
+            while(1){
+                long distance = sensor.distance(CM);
+                printf("Distance:%d\n");
+                wait(0.1);
+            }
+        }
+*/
+
+
+
+#ifndef HCSR04_H
+#define HCSR04_H
+
+#include "mbed.h"
+
+#define CM 1
+#define INC 0
+
+class HCSR04 {
+  public:
+    HCSR04(PinName t, PinName e);
+    long echo_duration();
+    long distance(int sys);
+
+    private:
+        DigitalOut trig;
+        DigitalIn echo;
+        Timer timer;
+        long duration,distacne_cm,distance_inc;
+};
+
+#endif
\ No newline at end of file