Engbert Miedema / HCSR04

Now working with floats instead of long ints

Fork of HCSR04 by Antoniolinux B.

Files at this revision

API Documentation at this revision

Revision 1:ca0ff158918c, committed 2015-11-03

Comitter:
emiedema
Date:
Tue Nov 03 14:42:13 2015 +0000
Parent:
0:86b2086be101
Commit message:
Awesome!

Changed in this revision

hcsr04.cpp Show annotated file Show diff for this revision Revisions of this file
hcsr04.h Show annotated file Show diff for this revision Revisions of this file 
--- a/hcsr04.cpp	Mon Apr 14 08:23:09 2014 +0000
+++ b/hcsr04.cpp	Tue Nov 03 14:42:13 2015 +0000
@@ -4,7 +4,7 @@
 *HCSR04.cpp
 */
 HCSR04::HCSR04(PinName t, PinName e) : trig(t), echo(e) {}
- long HCSR04::echo_duration() {
+float HCSR04::echo_duration() {
         
     timer.reset();  //reset timer
     trig=0;   // trigger low 
@@ -21,7 +21,7 @@
 }
  
 //return distance in cm 
-long HCSR04::distance(){
+float HCSR04::distance(){
     duration = echo_duration();
   distance_cm = (duration/2)/29.1  ;
         return distance_cm;

--- a/hcsr04.h	Mon Apr 14 08:23:09 2014 +0000
+++ b/hcsr04.h	Tue Nov 03 14:42:13 2015 +0000
@@ -37,14 +37,14 @@
 class HCSR04 {
   public:
     HCSR04(PinName t, PinName e);
-    long echo_duration();
-    long distance();
+    float echo_duration();
+    float distance();
  
     private:
         DigitalOut trig;
         DigitalIn echo;
         Timer timer;
-        long duration,distance_cm;
+        float duration,distance_cm;
 };
  
 #endif
\ No newline at end of file