Diff: USBMIDI/USBMIDI.cpp

Revision:

12:a9671b78d24e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBMIDI/USBMIDI.cpp	Mon Jul 22 21:16:27 2013 +0000
@@ -0,0 +1,135 @@
+/* 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.
+*/
+
+#include "stdint.h"
+#include "USBMIDI.h"
+
+
+USBMIDI::USBMIDI( uint16_t vendor_id, uint16_t product_id, uint16_t product_release ): USBDevice( vendor_id, product_id, product_release )
+{
+    midi_evt = NULL;
+    USBDevice::connect();
+}
+
+void USBMIDI::write( MIDIMessage m )
+{
+    USBDevice::write( EPBULK_IN, m.data, 4, MAX_PACKET_SIZE_EPBULK );
+}
+
+
+void USBMIDI::attach( void ( *fptr )( MIDIMessage ) )
+{
+    midi_evt = fptr;
+}
+
+
+bool USBMIDI::EP2_OUT_callback()
+{
+    uint8_t buf[64];
+    uint32_t len;
+    readEP( EPBULK_OUT, buf, &len, 64 );
+
+    if ( midi_evt != NULL )
+    {
+        for ( int i = 0; i < len; i += 4 )
+        {
+            midi_evt( MIDIMessage( buf + i ) );
+        }
+    }
+
+    // We reactivate the endpoint to receive next characters
+    readStart( EPBULK_OUT, MAX_PACKET_SIZE_EPBULK );
+    return true;
+}
+
+
+
+// Called in ISR context
+// Set configuration. Return false if the
+// configuration is not supported.
+bool USBMIDI::USBCallback_setConfiguration( uint8_t configuration )
+{
+    if ( configuration != DEFAULT_CONFIGURATION )
+    {
+        return false;
+    }
+
+    // Configure endpoints > 0
+    addEndpoint( EPBULK_IN, MAX_PACKET_SIZE_EPBULK );
+    addEndpoint( EPBULK_OUT, MAX_PACKET_SIZE_EPBULK );
+    // We activate the endpoint to be able to receive data
+    readStart( EPBULK_OUT, MAX_PACKET_SIZE_EPBULK );
+    return true;
+}
+
+
+uint8_t *USBMIDI::stringIinterfaceDesc()
+{
+    static uint8_t stringIinterfaceDescriptor[] =
+    {
+        0x0c,                           //bLength
+        STRING_DESCRIPTOR,              //bDescriptorType 0x03
+        'A', 0, 'u', 0, 'd', 0, 'i', 0, 'o', 0 //bString iInterface - Audio
+    };
+    return stringIinterfaceDescriptor;
+}
+
+uint8_t *USBMIDI::stringIproductDesc()
+{
+    static uint8_t stringIproductDescriptor[] =
+    {
+        0x16,                                                       //bLength
+        STRING_DESCRIPTOR,                                          //bDescriptorType 0x03
+        'M', 0, 'b', 0, 'e', 0, 'd', 0, ' ', 0, 'A', 0, 'u', 0, 'd', 0, 'i', 0, 'o', 0 //bString iProduct - Mbed Audio
+    };
+    return stringIproductDescriptor;
+}
+
+
+uint8_t *USBMIDI::configurationDesc()
+{
+    static uint8_t configDescriptor[] =
+    {
+        // configuration descriptor
+        0x09, 0x02, 0x65, 0x00, 0x02, 0x01, 0x00, 0xc0, 0x50,
+
+        // The Audio Interface Collection
+        0x09, 0x04, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, // Standard AC Interface Descriptor
+        0x09, 0x24, 0x01, 0x00, 0x01, 0x09, 0x00, 0x01, 0x01, // Class-specific AC Interface Descriptor
+        0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, // MIDIStreaming Interface Descriptors
+        0x07, 0x24, 0x01, 0x00, 0x01, 0x41, 0x00,             // Class-Specific MS Interface Header Descriptor
+
+        // MIDI IN JACKS
+        0x06, 0x24, 0x02, 0x01, 0x01, 0x00,
+        0x06, 0x24, 0x02, 0x02, 0x02, 0x00,
+
+        // MIDI OUT JACKS
+        0x09, 0x24, 0x03, 0x01, 0x03, 0x01, 0x02, 0x01, 0x00,
+        0x09, 0x24, 0x03, 0x02, 0x06, 0x01, 0x01, 0x01, 0x00,
+
+        // OUT endpoint descriptor
+        0x09, 0x05, 0x02, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
+        0x05, 0x25, 0x01, 0x01, 0x01,
+
+        // IN endpoint descriptor
+        0x09, 0x05, 0x82, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
+        0x05, 0x25, 0x01, 0x01, 0x03,
+    };
+    return configDescriptor;
+}
+