Diff: main.cpp

Revision:

5:679a07e00e4c

Parent:

3:b8caa902d79e

--- a/main.cpp	Fri Mar 01 13:26:13 2013 +0000
+++ b/main.cpp	Mon Jun 26 17:27:42 2017 +0000
@@ -1,20 +1,85 @@
 #include "mbed.h"
 #include "USBMouse.h"
-
+//USB mouse demo using a 5-way Navigation Switch (Digital Joystick)
+//Needs USB connector breakout with D+, D-, and Gnd to mbed LLP1768
 USBMouse mouse;
 
-int main() {
+class Nav_Switch
+{
+public:
+    Nav_Switch(PinName up,PinName down,PinName left,PinName right,PinName fire);
+    int read();
+//boolean functions to test each switch
+    bool up();
+    bool down();
+    bool left();
+    bool right();
+    bool fire();
+//automatic read on RHS
+    operator int ();
+//index to any switch array style
+    bool operator[](int index) {
+        return _pins[index];
+    };
+private:
+    BusIn _pins;
+
+};
+Nav_Switch::Nav_Switch (PinName up,PinName down,PinName left,PinName right,PinName fire):
+    _pins(up, down, left, right, fire)
+{
+    _pins.mode(PullUp); //needed if pullups not on board or a bare nav switch is used - delete otherwise
+    wait(0.001); //delays just a bit for pullups to pull inputs high
+}
+inline bool Nav_Switch::up()
+{
+    return !(_pins[0]);
+}
+inline bool Nav_Switch::down()
+{
+    return !(_pins[1]);
+}
+inline bool Nav_Switch::left()
+{
+    return !(_pins[2]);
+}
+inline bool Nav_Switch::right()
+{
+    return !(_pins[3]);
+}
+inline bool Nav_Switch::fire()
+{
+    return !(_pins[4]);
+}
+inline int Nav_Switch::read()
+{
+    return _pins.read();
+}
+inline Nav_Switch::operator int ()
+{
+    return _pins.read();
+}
+
+Nav_Switch myNav( p9, p6, p7, p5, p8); //pin order on Sparkfun Nav SW breakout
+
+int main()
+{
     int16_t x = 0;
     int16_t y = 0;
-    int32_t radius = 10;
-    int32_t angle = 0;
-
+    uint8_t left_click = 0;
     while (1) {
-        x = cos((double)angle*3.14/180.0)*radius;
-        y = sin((double)angle*3.14/180.0)*radius;
-        
-        mouse.move(x, y);
-        angle += 3;
+        //check relative mouse movement
+        x=0;
+        y=0;
+        if (myNav.up()) x=-1;
+        if (myNav.down()) x=1;
+        if (myNav.left()) y=1;
+        if (myNav.right()) y=-1;
+        //check mouse left button click
+        if (myNav.fire()) left_click = 1;
+        if (!myNav.fire())left_click = 0;
+        //send a mouse data packet to PC
+        mouse.update(x, y, left_click, 0);
         wait(0.001);
     }
 }
\ No newline at end of file