This Grove - Ultrasonic sensor is a non-contact distance measurement module which works at 42KHz, suitable for projects that require middle distance measurement.
Dependencies: RangeFinder mbed
Fork of SeeedUltrasoundRangeFinder by
Revision 0:186bb2174995, committed 2012-07-04
- Comitter:
- NickRyder
- Date:
- Wed Jul 04 15:56:38 2012 +0000
- Child:
- 1:285d47b768ac
- Commit message:
- Released under MIT license.
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Pulse.lib Wed Jul 04 15:56:38 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/NickRyder/code/Pulse/#fb79a4637a64
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/RangeFinder.lib Wed Jul 04 15:56:38 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/NickRyder/code/RangeFinder/#05c9036328ee
--- /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;
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Jul 04 15:56:38 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/737756e0b479
Austin Blackstone

Grove Ultrasonic Ranger