Uses a Sparkfun Thumb Joystick to control the X and Y coordinate returned from the mbed device acting as a HID based absolute mouse.

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API Documentation at this revision

Comitter:
AdamGreen
Date:
Wed Dec 07 07:27:31 2011 +0000
Parent:
1:df7a5706802a
Commit message:
Modified to work with analog thumbstick and updated to latest mbed libraries.

Changed in this revision

USBDevice.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
diff -r df7a5706802a -r ceb3218c3229 USBDevice.lib
--- a/USBDevice.lib	Fri Nov 18 06:26:29 2011 +0000
+++ b/USBDevice.lib	Wed Dec 07 07:27:31 2011 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/samux/code/USBDevice/#ef8c6751b185
+http://mbed.org/users/samux/code/USBDevice/#f3327d71595f
diff -r df7a5706802a -r ceb3218c3229 main.cpp
--- a/main.cpp	Fri Nov 18 06:26:29 2011 +0000
+++ b/main.cpp	Wed Dec 07 07:27:31 2011 +0000
@@ -12,9 +12,28 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 */
-/* Uses two 10k potentiometers conntected to AnalogIn pins 15 and 16 to
-   control the X and Y coordinate returned from the mbed device which is
-   acting as HID based absolute mouse.
+/* Uses a Sparkfun Thumb Joystick to control the X and Y coordinate returned
+   from the mbed device acting as a HID based absolute mouse.
+   
+   More information about the analog joystick and associated breakout board can
+   be found at the following URL: http://www.sparkfun.com/products/10433
+   
+                 Connections
+   +-------------------+---------------+ 
+   | Joystick Breakout | mbed          |
+   | VCC               | pin 40 - VOUT |
+   | VERT              | pin 15 - p15  |
+   | HORZ              | pin 16 - p16  |
+   | SEL               | Not Connected |
+   | GND               | pin 1  - GND  |
+   +-------------------+---------------+ 
+   
+   The following notebook page shows how to connect a SparkFun USB breakout
+   board to mbed pin 31 (D+) & pin 32 (D-).
+    http://mbed.org/users/romilly/notebook/unboxing-the-lpc11u24/
+   
+   Notebook page describing this program can be found here:
+    http://mbed.org/users/romilly/notebook/unboxing-the-lpc11u24/
 */
 #include <mbed.h>
 #include <USBMouse.h>
@@ -30,7 +49,7 @@
     while (1)
     {
         float AnalogXReading = AnalogX.read();
-        float AnalogYReading = AnalogY.read();
+        float AnalogYReading = 1.0f - AnalogY.read();
 
         uint16_t X = X_MIN_ABS + (uint16_t)(Width * AnalogXReading);
         uint16_t Y = Y_MIN_ABS + (uint16_t)(Height * AnalogYReading);