Seeed / Mbed 2 deprecated Seeed_Grove_Thumb_Joystick_Example

Grove - Thumb Joystick analog module example application. X, Y button press outputs provided. The joystick also has a push button that is could be used for special applications. When the module is in working mode it will output two analog values representing two directions. The value is restricted in a little smaller range (e.g 200~700)compared to the normal joystick, while it is around 1023 when the button is pushed, so that the MCU can detect the action of pressing.

Dependencies:   mbed

Fork of Seeed_Grove_Thumb_Joystick_Example by Austin Blackstone

Diff: main.cpp

Revision:
0:6641b7d213c1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Sep 05 19:47:30 2014 +0000
@@ -0,0 +1,28 @@
+#include "mbed.h"
+
+AnalogIn xAxis(A0);
+AnalogIn yAxis(A1);
+
+int x,y,button;  // global variables to hold values
+Ticker joystick; // recurring interrupt to get joystick data
+
+void joystick_Int_Handler()
+{
+    x = xAxis.read() * 1000; // float (0->1) to int (0-1000)
+    y = yAxis.read() * 1000;
+    if ( (x > 900) || (y > 900) )
+        button = 1;
+    else
+        button = 0;
+}
+
+int main() 
+{
+    // init interrupt, call every .2s
+    joystick.attach(joystick_Int_Handler,0.2);
+    
+    // Print out the variables
+    while(1){
+        printf("\rX=%3d, Y=%3d, Button=%d",x,y,button);
+    }
+}