File content as of revision 18:08b207d10056:

/* Copyright (c) 2010-2011 mbed.org, MIT License
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
* and associated documentation files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or
* substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

#ifndef USBKEYBOARD_H
#define USBKEYBOARD_H

#include "USBHID.h"
#include "Stream.h"

/* Modifiers */
enum MODIFIER_KEY
{
    KEY_CTRL = 1,
    KEY_SHIFT = 2,
    KEY_ALT = 4,
};


enum MEDIA_KEY
{
    KEY_NEXT_TRACK,     /*!< next Track Button */
    KEY_PREVIOUS_TRACK, /*!< Previous track Button */
    KEY_STOP,           /*!< Stop Button */
    KEY_PLAY_PAUSE,     /*!< Play/Pause Button */
    KEY_MUTE,           /*!< Mute Button */
    KEY_VOLUME_UP,      /*!< Volume Up Button */
    KEY_VOLUME_DOWN,    /*!< Volume Down Button */
};

enum FUNCTION_KEY
{
    KEY_F1 = 128,   /* F1 key */
    KEY_F2,         /* F2 key */
    KEY_F3,         /* F3 key */
    KEY_F4,         /* F4 key */
    KEY_F5,         /* F5 key */
    KEY_F6,         /* F6 key */
    KEY_F7,         /* F7 key */
    KEY_F8,         /* F8 key */
    KEY_F9,         /* F9 key */
    KEY_F10,        /* F10 key */
    KEY_F11,        /* F11 key */
    KEY_F12,        /* F12 key */
    KEY_PRINT_SCREEN,   /* Print Screen key */
    KEY_SCROLL_LOCK, /* Scroll lock */
    KEY_CAPS_LOCK,   /* caps lock */
    KEY_NUM_LOCK,   /* num lock */
    KEY_INSERT,         /* Insert key */
    KEY_HOME,           /* Home key */
    KEY_PAGE_UP,        /* Page Up key */
    KEY_PAGE_DOWN,      /* Page Down key */
};

/** 
 * USBKeyboard example
 * @code
 *
 * #include "mbed.h"
 * #include "USBKeyboard.h"
 *
 * USBKeyboard key;
 * 
 * int main(void)
 * {
 *   while (1)
 *   {
 *       key.printf("Hello World\r\n");
 *       wait(1);
 *   }
 * }
 *
 * @endcode
 */
class USBKeyboard: public USBHID, public Stream
{
    public:
    
        /**
        *   Constructor
        *
        *
        * @param leds Leds bus: first: NUM_LOCK, second: CAPS_LOCK, third: SCROLL_LOCK
        * @param vendor_id Your vendor_id (default: 0x1235)
        * @param product_id Your product_id (default: 0x0050)
        * @param product_release Your preoduct_release (default: 0x0001)
        *
        */
        USBKeyboard(uint16_t vendor_id = 0x1235, uint16_t product_id = 0x0050, uint16_t product_release = 0x0001): 
            USBHID(0, 0, vendor_id, product_id, product_release, false){
                lock_status = 0;
                connect();
            };
        
        /**
        * To send a character defined by a modifier(CTRL, SHIFT, ALT) and the key 
        *
        * @code
        * //To send CTRL + s (save)
        *  keyboard.keyCode('s', KEY_CTRL);
        * @endcode
        *
        * @param modifier bit 0: KEY_CTRL, bit 1: KEY_SHIFT, bit 2: KEY_ALT (default: 0)
        * @param key character to send
        * @returns true if there is no error, false otherwise
        */
        bool keyCode(uint8_t key, uint8_t modifier = 0);
        
        /**
        * Send a character
        *
        * @param c character to be sent
        * @returns true if there is no error, false otherwise
        */
        virtual int _putc(int c);
        
        /**
        * Control media keys
        *
        * @param key media key pressed (KEY_NEXT_TRACK, KEY_PREVIOUS_TRACK, KEY_STOP, KEY_PLAY_PAUSE, KEY_MUTE, KEY_VOLUME_UP, KEY_VOLUME_DOWN)
        * @returns true if there is no error, false otherwise
        */
        bool mediaControl(MEDIA_KEY key);
        
        /*
        * 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();
        
        /*
        * Called when a data is received on the OUT endpoint. Useful to switch on LED of LOCK keys
        *
        * @returns if handle by subclass, return true
        */
        virtual bool EP1_OUT_callback();
        
        /**
        * Read status of lock keys. Useful to switch-on/off leds according to key pressed. Only the first three bits of the result is important:
        *   - First bit: NUM_LOCK
        *   - Second bit: CAPS_LOCK
        *   - Third bit: SCROLL_LOCK
        *
        * @returns status of lock keys
        */
        uint8_t lockStatus();
        
   private:
        //dummy otherwise it doesn,t compile (we must define all methods of an abstract class)
        virtual int _getc() { return -1;};
        
        uint8_t lock_status;
};

#endif