Gert Lauritsen / Tarco

Interface to a standard tarco sensor. Measure the periode and the cal the speed

Diff: Tarco.cpp

Revision:
3:6d3f2034e5f1
Parent:
2:c50da089786a
Child:
4:35024179a736
--- a/Tarco.cpp	Thu Nov 07 09:23:27 2013 +0000
+++ b/Tarco.cpp	Thu Nov 07 12:02:47 2013 +0000
@@ -2,7 +2,7 @@
 
 Tarco::Tarco(PinName tarcosignal) :
     _tarcosensor(tarcosignal) {
-        Puls=0; t.start();
+        t.start();
         AdvPeriode=99999;
         _tarcosensor.fall(this, &Tarco::click);
 }
@@ -11,20 +11,16 @@
 //måler pulstiden
  t.stop();
  AdvPeriode=t.read_us();
- NAdv++;
  t.reset(); t.start();  
 }
 
 float Tarco::Speed(){
 //Giver puls/sek [hz]
  float frek=1e6/AdvPeriode;
-  AdvSpeed+=frek;
-  NAdvSpeed++;  
  return (float) frek; 
 }
 
 float Tarco::RPM() {
-float rpm=(AdvSpeed/NAdvSpeed)*60;
-AdvSpeed=0; NAdvSpeed=0;
+float rpm=60e6/AdvPeriode;
 return (float) rpm;
 }