Diff: main.cpp

Revision:

2:ceb3218c3229

Parent:

0:b2c327d045a2

--- 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);