Revision 1:d9083ad270f5, committed 2014-04-05

Comitter:

iLyngklip

Date:

Sat Apr 05 11:26:35 2014 +0000

Parent:

0:506625fdcd0e

Commit message:

plz;

Changed in this revision

--- a/HCSR04.cpp	Sat Apr 05 07:55:59 2014 +0000
+++ b/HCSR04.cpp	Sat Apr 05 11:26:35 2014 +0000
@@ -2,7 +2,7 @@
 #include "mbed.h"
 
 
-HCSR04::HCSR04(PinName t, PinName e) : trig(t), echo(e) {}
+HCSR04::HCSR04(PinName t, PinName e, PinName t2, PinName e2) : trig(t), echo(e), trig2(t2), echo2(e2) {}
  
 
 //      Trigger          Echo
@@ -28,7 +28,7 @@
     
     return timer.read_us();
 }
-long HCSR05::Echo_duration() {
+long HCSR04::Echo_duration() {
     timer.reset();
     trig2 = 0;
     wait_us(2);
@@ -59,4 +59,16 @@
         return distacne_cm;
     else
         return distance_inc;
+        }
+        
+long HCSR04::distance(int sys){
+    duration = echo_duration();
+    if(duration > 30000)
+        return -1;
+    distacne_cm = duration /29 / 2 ;
+    distance_inc = duration / 74 / 2;
+    if (sys)
+        return distacne_cm;
+    else
+        return distance_inc;
 }

--- a/HCSR04.h	Sat Apr 05 07:55:59 2014 +0000
+++ b/HCSR04.h	Sat Apr 05 11:26:35 2014 +0000
@@ -32,17 +32,17 @@
 
 class HCSR04 {
   public:
-    HCSR04(PinName t, PinName e);
+    HCSR04(PinName t, PinName e, PinName t2, PinName e2);
     long echo_duration();
     long distance(int sys);
     
-    HCSR05();
+    
     long Echo_duration();
     long Distance(int sys);
 
     private:
-        DigitalOut trig;
-        DigitalIn echo;
+        DigitalOut trig, trig2;
+        DigitalIn echo, echo2;
         Timer timer;
         long duration,distacne_cm,distance_inc;
 };