Library for Seed Groove Ultrasonic range / distance meter. See also https://github.com/Seeed-Studio/Grove_Ultrasonic_Ranger/blob/master/Ultrasonic.h and http://www.seeedstudio.com/wiki/Grove_-_Ultrasonic_Ranger

Dependents:   Seed_Groove_Ultrasonic_Distance ECE4180Finalproject

Files at this revision

API Documentation at this revision

Comitter:
grassel
Date:
Sat Nov 01 21:00:57 2014 +0000
Commit message:
created library

Changed in this revision

Ultrasonic.cpp Show annotated file Show diff for this revision Revisions of this file
Ultrasonic.h Show annotated file Show diff for this revision Revisions of this file
diff -r 000000000000 -r c7db0e6e8f0e Ultrasonic.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Ultrasonic.cpp	Sat Nov 01 21:00:57 2014 +0000
@@ -0,0 +1,72 @@
+/*
+ * Ultrasonic.cpp
+ * A library for ultrasonic ranger
+ *
+ * Copyright (c) 2012 seeed technology inc.
+ * Website    : www.seeed.cc
+ * Author     : LG, FrankieChu
+ * Create Time: Jan 17,2013
+ *
+ * Change Log :
+ *   adapted to ARM mbed by Guido Grassel, Oct 2014
+ *
+ * The MIT License (MIT)
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+#include "Ultrasonic.h"
+
+Ultrasonic::Ultrasonic(PinName pin)
+    : _pin(pin)
+{
+}
+
+/*The measured distance from the range 0 to 400 Centimeters*/
+long Ultrasonic::measureInCentimeters(void)
+{
+    _pin.output();
+    _pin = 0; // digitalWrite(_pin, LOW);
+    wait_us(2); //  delayMicroseconds(2);
+    _pin = 1; //  digitalWrite(_pin, HIGH);
+
+    wait_us(5);     //delayMicroseconds(5);
+    _pin = 0;      //digitalWrite(_pin,LOW);
+    _pin.input();   // pinMode(_pin,INPUT);
+    long duration;
+    duration = pulseIn();
+    long RangeInCentimeters;
+    RangeInCentimeters = duration/29/2;
+    return RangeInCentimeters;
+}
+
+long Ultrasonic::pulseIn(void) {
+    Timer tmr;
+    _pin.input();
+    while (_pin!=1) {
+        ;    // wait for high
+    }
+    tmr.start();
+    while (_pin!=0) {
+        ;    // wait for low
+    }
+    int duration = tmr.read_us();
+    tmr.stop();
+    return (long) duration;
+}
diff -r 000000000000 -r c7db0e6e8f0e Ultrasonic.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Ultrasonic.h	Sat Nov 01 21:00:57 2014 +0000
@@ -0,0 +1,49 @@
+/*
+ * Ultrasonic.cpp
+ * A library for ultrasonic ranger
+ *
+ * Copyright (c) 2012 seeed technology inc.
+ * Website    : www.seeed.cc
+ * Author     : LG, FrankieChu
+ * Create Time: Jan 17,2013
+ *
+ * Change Log :
+ *   adapted to ARM mbed by Guido Grassel, Oct 2014
+ *
+ * The MIT License (MIT)
+ *
+ * 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.
+ *
+ * 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 Ultrasonic_H
+#define Ultrasonic_H
+
+#include "mbed.h"
+
+class Ultrasonic
+{
+    public:
+        Ultrasonic(PinName pin);
+        long measureInCentimeters(void);
+    private:
+        long pulseIn(void);
+        DigitalInOut _pin;
+};
+
+#endif
\ No newline at end of file