Diff: hcsr04.h

Revision:

0:dbd45b08936b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hcsr04.h	Wed Jun 08 10:15:44 2016 +0000
@@ -0,0 +1,46 @@
+/* HCSR04 - MBED library for Ultrasonic Ranging Module HC - SR04
+ * Copyright (C) 2016 Haakon Sporsheim <haakon.sporsheim@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3.0 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.
+ * See the COPYING file at the root of the source repository.
+ */
+
+#ifndef __HCSR04_H__
+#define __HCSR04_H__
+
+#include <mbed.h>
+
+class HCSR04
+{
+    public:
+        HCSR04(PinName pinTrig, PinName pinEcho);
+
+        void start(void (*cb)(uint32_t), float interval);
+        void stop(void);
+
+    private:
+        DigitalOut      trig;
+        InterruptIn     echo;
+        Ticker          ticker;
+        Timer           timer;
+        int             timeEcho;
+        
+        void            (*cbUpdate)(uint32_t);
+
+        void update(void);
+        void echoRise(void);
+        void echoFall(void);
+};
+
+#endif /* __HCSR04_H__ */