USBMIDI.h

00001 /* Copyright (c) 2010-2011 mbed.org, MIT License
00002 *
00003 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00004 * and associated documentation files (the "Software"), to deal in the Software without
00005 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
00006 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
00007 * Software is furnished to do so, subject to the following conditions:
00008 *
00009 * The above copyright notice and this permission notice shall be included in all copies or
00010 * substantial portions of the Software.
00011 *
00012 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00013 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00014 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00015 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00016 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00017 */
00018 
00019 #ifndef USBMIDI_H
00020 #define USBMIDI_H
00021 
00022 /* These headers are included for child class. */
00023 #include "USBEndpoints.h"
00024 #include "USBDescriptor.h"
00025 #include "USBDevice_Types.h"
00026 
00027 #include "USBDevice.h"
00028 #include "MIDIMessage.h"
00029 
00030 #define DEFAULT_CONFIGURATION (1)
00031 
00032 /**
00033 * USBMIDI example
00034 *
00035 * @code
00036 * #include "mbed.h"
00037 * #include "USBMIDI.h"
00038 *
00039 * USBMIDI midi;
00040 *
00041 * int main() {
00042 *    while (1) {
00043 *        for(int i=48; i<83; i++) {     // send some messages!
00044 *            midi.write(MIDIMessage::NoteOn(i));
00045 *            wait(0.25);
00046 *            midi.write(MIDIMessage::NoteOff(i));
00047 *            wait(0.5);
00048 *        }
00049 *    }
00050 * }
00051 * @endcode
00052 */
00053 class USBMIDI: public USBDevice {
00054 public:
00055 
00056     /**
00057     * Constructor
00058     *
00059     * @param vendor_id Your vendor_id
00060     * @param product_id Your product_id
00061     * @param product_release Your preoduct_release
00062     */
00063     USBMIDI(uint16_t vendor_id = 0x0700, uint16_t product_id = 0x0101, uint16_t product_release = 0x0001);
00064 
00065     /**
00066      * Send a MIDIMessage
00067      *
00068      * @param m The MIDIMessage to send
00069      */
00070     void write(MIDIMessage m);
00071 
00072     /**
00073      * Attach a callback for when a MIDIEvent is received
00074      *
00075      * @param fptr function pointer
00076      */
00077     void attach(void (*fptr)(MIDIMessage));
00078 
00079 
00080 protected:
00081     virtual bool EPBULK_OUT_callback();
00082     virtual bool USBCallback_setConfiguration(uint8_t configuration);
00083     /*
00084     * Get string product descriptor
00085     *
00086     * @returns pointer to the string product descriptor
00087     */
00088     virtual const uint8_t * stringIproductDesc();
00089 
00090     /*
00091     * Get string interface descriptor
00092     *
00093     * @returns pointer to the string interface descriptor
00094     */
00095     virtual const uint8_t * stringIinterfaceDesc();
00096 
00097     /*
00098     * Get configuration descriptor
00099     *
00100     * @returns pointer to the configuration descriptor
00101     */
00102     virtual const uint8_t * configurationDesc();
00103 
00104 private:
00105     uint8_t data[MAX_MIDI_MESSAGE_SIZE+1];
00106     uint8_t cur_data;
00107     bool data_end;
00108     
00109     void (*midi_evt)(MIDIMessage);
00110 };
00111 
00112 #endif