Diff: HCSR04.h

Revision:

1:01ecd819e4ee

Parent:

0:0bda99bb39a4

diff -r 0bda99bb39a4 -r 01ecd819e4ee HCSR04.h
--- a/HCSR04.h	Tue Oct 18 14:32:12 2011 +0000
+++ b/HCSR04.h	Thu Jul 07 12:54:59 2016 +0000
@@ -1,39 +1,49 @@
-//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);
-            }
-        }
+/* File: HCSR04.h
+ * Author: Antonio Buonanno  
+ *Board: STM NUCLEO F401RE, 
+ *Hardware: Ultrasonic Range HC-SR04,  
+ * 
+ *This work derived from Arduino library, 
+ *
+ * Desc: driver for HCSR04 Ultrasonic Range Finder.  The returned range
+ *       is in units of meters.
+ *  
+ *       
+ *
 */
 
-
+/* EXAMPLE
+#include "mbed.h"
+#include "hcsr04.h"
 
-#ifndef HCSR04_H
-#define HCSR04_H
-
+//D12 TRIGGER D11 ECHO
+   HCSR04 sensor(D12, D11); 
+int main() {
+    while(1) {
+        
+     long distance = sensor.distance();   
+      printf("distanza  %d  \n",distance);
+      wait(1.0); // 1 sec  
+        
+    }
+}
+*/
+#ifndef hcsr04_H
+#define hcsr04_H
 #include "mbed.h"
 
-#define CM 1
-#define INC 0
 
 class HCSR04 {
   public:
-    HCSR04(PinName t, PinName e);
+    HCSR04(PinName t, PinName e, long to);
     long echo_duration();
-    long distance(int sys);
-
+    long distance();
+ 
     private:
         DigitalOut trig;
         DigitalIn echo;
         Timer timer;
-        long duration,distacne_cm,distance_inc;
+        long duration,distance_cm,time_out;
 };
-
+ 
 #endif
\ No newline at end of file