Tanu Tanu / HCSR04

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Fork of HCSR04 by Prabhu Desai

Files at this revision

API Documentation at this revision

Revision 4:33938a97d904, committed 2013-03-30

Comitter:
prabhuvd
Date:
Sat Mar 30 18:46:01 2013 +0000
Parent:
3:e6795cb9439c
Child:
5:e70a24a88131
Commit message:
Updated comments

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	Sat Mar 30 18:43:21 2013 +0000
+++ b/hcsr04.cpp	Sat Mar 30 18:46:01 2013 +0000
@@ -53,7 +53,7 @@
     distance= (pulsedur*343)/20000;
     pulsetime.reset();
 }
- 
+
 void DistMeasure::rise (void (*fptr)(void))
 {
     echo.rise(fptr);

--- a/hcsr04.h	Sat Mar 30 18:43:21 2013 +0000
+++ b/hcsr04.h	Sat Mar 30 18:46:01 2013 +0000
@@ -41,15 +41,19 @@
     /** Return the distance from obstacle in cm
     * @param distance in cms and returns -1, in case of failure
     */
- 
     unsigned int get_dist_cm(void);
+    /** Return the pulse duration equal to sonic waves travelling to obstacle and back to receiver.
+    * @param pulse duration in microseconds. 
+    */    
     unsigned int get_pulse_us(void);
+    /** Generates the trigger pulse of 10us on the trigger PIN.
+    */      
     void start(void );
     void isr_rise(void);
     void isr_fall(void);
     void fall (void (*fptr)(void));
     void rise (void (*fptr)(void));
-    
+
 
 
 private:
@@ -58,7 +62,7 @@
     DigitalOut  trigger;
     InterruptIn echo;
     unsigned int pulsedur;
-    unsigned int distance;    
+    unsigned int distance;
 };
 
 #endif
\ No newline at end of file