Diff: USBJoystick.h

Revision:

0:5037d4be5b6d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBJoystick.h	Sat Jan 07 21:03:54 2012 +0000
@@ -0,0 +1,210 @@
+/* USBJoystick.h */
+/* USB device example: Joystick*/
+/* Copyright (c) 2011 ARM Limited. All rights reserved. */
+/* Modified Mouse code for Joystick - WH 2012 */
+
+#ifndef USBJOYSTICK_H
+#define USBJOYSTICK_H
+
+#include "USBHID.h"
+
+#define REPORT_ID_JOYSTICK  4
+
+/* Common usage */
+enum JOY_BUTTON {
+     JOY_B0 = 1,
+     JOY_B1 = 2,
+     JOY_B2 = 4,
+     JOY_B3 = 8,     
+};
+
+#if(0)
+enum JOY_HAT {
+     JOY_HAT_UP      = 0,
+     JOY_HAT_RIGHT   = 1,
+     JOY_HAT_DOWN    = 2,
+     JOY_HAT_LEFT    = 3,     
+     JOY_HAT_NEUTRAL = 4,          
+};
+#else
+enum JOY_HAT {
+     JOY_HAT_UP         = 0,     
+     JOY_HAT_UP_RIGHT   = 1,
+     JOY_HAT_RIGHT      = 2,
+     JOY_HAT_RIGHT_DOWN = 3,
+     JOY_HAT_DOWN       = 4,
+     JOY_HAT_DOWN_LEFT  = 5,     
+     JOY_HAT_LEFT       = 6,     
+     JOY_HAT_LEFT_UP    = 7,          
+     JOY_HAT_NEUTRAL    = 8,          
+};
+#endif
+
+/* X, Y and T limits */
+/* These values do not directly map to screen pixels */
+/* Zero may be interpreted as meaning 'no movement' */
+#define JX_MIN_ABS    (-127)     /*!< The maximum value that we can move to the left on the x-axis */
+#define JY_MIN_ABS    (-127)     /*!< The maximum value that we can move up on the y-axis */
+#define JT_MIN_ABS    (-127)     /*!< The minimum value for the throttle */
+#define JX_MAX_ABS    (127)      /*!< The maximum value that we can move to the right on the x-axis */
+#define JY_MAX_ABS    (127)      /*!< The maximum value that we can move down on the y-axis */
+#define JT_MAX_ABS    (127)      /*!< The maximum value for the throttle */
+
+/**
+ *
+ * USBJoystick example
+ * @code
+ * #include "mbed.h"
+ * #include "USBJoystick.h"
+ *
+ * USBJoystick joystick;
+ *
+ * int main(void)
+ * {
+ *   while (1)
+ *   {
+ *      joystick.move(20, 0);
+ *      wait(0.5);
+ *   }
+ * }
+ *
+ * @endcode
+ *
+ *
+ * @code
+ * #include "mbed.h"
+ * #include "USBJoystick.h"
+ * #include <math.h>
+ *
+ * USBJoystick joystick;
+ *
+ * int main(void)
+ * {
+ *   int16_t i = 0;
+ *   int16_t throttle = 0;
+ *   int16_t rudder = 0;    
+ *   int16_t x = 0;
+ *   int16_t y = 0;
+ *   int32_t radius = 120;
+ *   int32_t angle = 0;
+ *   int8_t button = 0;    
+ *   int8_t hat = 0;    
+ *   
+ *   while (1) {
+ *       // Basic Joystick
+ *       throttle = (i >> 8) & 0xFF; // value -127 .. 128
+ *       rudder = (i >> 8) & 0xFF;   // value -127 .. 128        
+ *       button = (i >> 8) & 0x0F;   // value    0 .. 15, one bit per button     
+ *        hat    = (i >> 8) & 0x07;   // value 0..7 or 8 for neutral         
+ *       i++;        
+ *       
+ *       x = cos((double)angle*3.14/180.0)*radius;  // value -127 .. 128
+ *       y = sin((double)angle*3.14/180.0)*radius;  // value -127 .. 128
+ *       angle += 3;        
+ *
+ *       joystick.update(throttle, rudder, x, y, button, hat);
+ *
+ *       wait(0.001);
+ *   }
+ * }
+ * @endcode
+ */
+
+
+class USBJoystick: public USBHID {
+   public:
+
+        /**
+         *   Constructor
+         *
+         * @param vendor_id Your vendor_id (default: 0x1234)
+         * @param product_id Your product_id (default: 0x0002)
+         * @param product_release Your product_release (default: 0x0001)
+         */
+         USBJoystick(uint16_t vendor_id = 0x1234, uint16_t product_id = 0x0100, uint16_t product_release = 0x0001): 
+             USBHID(0, 0, vendor_id, product_id, product_release, false)
+             { 
+                 _init();
+                 connect();
+             };
+         
+         /**
+         * Write a state of the mouse
+         *
+         * @param t throttle position
+         * @param r rudder position         
+         * @param x x-axis position
+         * @param y y-axis position
+         * @param buttons buttons state
+         * @param hat hat state 0 (up), 1 (right, 2 (down), 3 (left) or 4 (neutral)
+         * @returns true if there is no error, false otherwise
+         */
+         bool update(int16_t t, int16_t r, int16_t x, int16_t y, uint8_t buttons, uint8_t hat);
+
+         /**
+         * Write a state of the mouse
+         *
+         * @returns true if there is no error, false otherwise
+         */
+         bool update();
+
+         /**
+         * Move the throttle position
+         *
+         * @param t throttle position
+         * @returns true if there is no error, false otherwise
+         */
+         bool throttle(int16_t t);
+         
+         /**
+         * Move the rudder position
+         *
+         * @param r rudder position
+         * @returns true if there is no error, false otherwise
+         */        
+         bool rudder(int16_t r);         
+
+         /**
+         * Move the cursor to (x, y)
+         *
+         * @param x-axis position
+         * @param y-axis position
+         * @returns true if there is no error, false otherwise
+         */
+         bool move(int16_t x, int16_t y);
+         
+         /**
+         * Press one or several buttons
+         *
+         * @param button button state
+         * @returns true if there is no error, false otherwise
+         */
+         bool button(uint8_t button);
+         
+         /**
+         * Press hat
+         *
+         * @param hat hat state
+         * @returns true if there is no error, false otherwise
+         */
+         bool hat(uint8_t hat);
+         
+         /*
+         * To define the report descriptor. Warning: this method has to store the length of the report descriptor in reportLength.
+         *
+         * @returns pointer to the report descriptor
+         */
+         virtual uint8_t * reportDesc();
+
+     private:
+         int8_t _t;     
+         int8_t _r;              
+         int8_t _x;                       
+         int8_t _y;     
+         uint8_t _button;
+         uint8_t _hat; 
+         
+         void _init();                 
+};
+
+#endif
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