Diff: main.cpp

Revision:

0:186bb2174995

Child:

1:285d47b768ac

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jul 04 15:56:38 2012 +0000
@@ -0,0 +1,47 @@
+/* Copyright (c) 2012 Nick Ryder, University of Oxford
+ * nick.ryder@physics.ox.ac.uk
+ *
+ *  MIT License
+ *
+ * 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 "mbed.h"
+
+#include "RangeFinder.h"
+
+// Seeed ultrasound range finder
+RangeFinder rf(p21, 10, 5800.0, 100000);
+DigitalOut led(LED1);
+
+int main()  {
+    led = 1;
+    float d;
+    while (1)   {
+        d = rf.read_m();
+        if (d == -1.0)  {
+            printf("Timeout Error.\n");   
+        } else if (d > 5.0) {  
+            // Seeed's sensor has a maximum range of 4m, it returns
+            // something like 7m if the ultrasound pulse isn't reflected. 
+            printf("No object within detection range.\n");
+        } else  {
+            printf("Distance = %f m.\n", d);
+        }
+        wait(0.5);
+        led = !led;
+    }
+}     
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