Diff: hcsr04.h

Revision:

0:fb0929f37ebe

Child:

2:0acb6ade091c

diff -r 000000000000 -r fb0929f37ebe hcsr04.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hcsr04.h	Sat Mar 30 17:27:39 2013 +0000
@@ -0,0 +1,63 @@
+/* Copyright (c) 2013 Prabhu Desai
+ * pdtechworld@gmail.com
+ *
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * For more details on the sensor :
+ * http://www.elecfreaks.com/store/hcsr04-ultrasonic-sensor-distance-measuring-module-p-91.html?zenid=pgm8pgnvaodbe36dibq5s1soi3
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef MBED_HCSR04_H
+#define MBED_HCSR04_H
+
+#include "mbed.h"
+
+/** Distance Measure Class(es)
+ */
+
+class DistMeasure
+{
+public:
+    /** Create a DistMeasure object connected to the specified pin
+    * @param pin i/o pin to connect to
+    */
+    DistMeasure(PinName TrigPin,PinName EchoPin,unsigned int maxtime);
+    ~DistMeasure();
+
+    /** Return the distance from obstacle in cm
+    * @param distance in cms and returns -1, in case of failure
+    */
+ 
+    unsigned int get_distance_cm(void);
+    void isr_rise(void);
+    void isr_fall(void);
+    void fall (void (*fptr)(void));
+    void rise (void (*fptr)(void));
+    
+
+
+private:
+
+    Timer pulsetime;
+    DigitalOut  trigger;
+    InterruptIn echo;
+    unsigned int timeout;
+    unsigned int pulsedur;
+    unsigned int distance;    
+};
+
+#endif
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