ECE 4180 / HC_SR04_Ultrasonic_Library

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Dependents:   4180Lab3Part1

Files at this revision

API Documentation at this revision

Revision 5:cc084768bab9, committed 2019-02-16

Comitter:
khuifang2202
Date:
Sat Feb 16 18:20:09 2019 +0000
Parent:
4:e0f9c9fb4cf3
Commit message:
huifang;

Changed in this revision

ultrasonic.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/ultrasonic.cpp	Mon Nov 24 20:23:07 2014 +0000
+++ b/ultrasonic.cpp	Sat Feb 16 18:20:09 2019 +0000
@@ -25,9 +25,17 @@
         
     void ultrasonic::_updateDist()
     {
+        //int x=0;
         end = _t.read_us ();
         done = 1;
-        _distance = (end - start)/6;       
+        _distance = (end - start)/305;
+    //_distance = (end-start);
+    //_distance = ((_distance)<<2+_distance)/29; // (distance*5)/29 is distance/5.8
+        //x = (end-start);
+        //_distance = (x<<2+x)/29; //(distance*5)/29 is distance/5.8
+        //x = (end - start);
+        //_distance = (x<<2+x)/29;
+        //_distance = ((_distance)<<2+_distance)/29;     
         _tout.detach();
         _tout.attach(this,&ultrasonic::_startTrig, _updateSpeed);   
     }