Seeed Studio / USBDevice

usb device library

Fork of USBDevice by mbed official

USBMIDI/USBMIDI.cpp@11:5592a5e874fe, 2013-07-31 (annotated)

Committer:
seeed
Date:
Wed Jul 31 01:12:05 2013 +0000
Revision:
11:5592a5e874fe
Parent:
1:80ab0d068708 
add meta key

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:80ab0d068708 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
samux 1:80ab0d068708 2 *
samux 1:80ab0d068708 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:80ab0d068708 4 * and associated documentation files (the "Software"), to deal in the Software without
samux 1:80ab0d068708 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
samux 1:80ab0d068708 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
samux 1:80ab0d068708 7 * Software is furnished to do so, subject to the following conditions:
samux 1:80ab0d068708 8 *
samux 1:80ab0d068708 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:80ab0d068708 10 * substantial portions of the Software.
samux 1:80ab0d068708 11 *
samux 1:80ab0d068708 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:80ab0d068708 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:80ab0d068708 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:80ab0d068708 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:80ab0d068708 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:80ab0d068708 17 */
samux 1:80ab0d068708 18
samux 1:80ab0d068708 19 #include "stdint.h"
samux 1:80ab0d068708 20 #include "USBMIDI.h"
samux 1:80ab0d068708 21
samux 1:80ab0d068708 22
samux 1:80ab0d068708 23 USBMIDI::USBMIDI(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) {
samux 1:80ab0d068708 24 midi_evt = NULL;
samux 1:80ab0d068708 25 USBDevice::connect();
samux 1:80ab0d068708 26 }
samux 1:80ab0d068708 27
samux 1:80ab0d068708 28 void USBMIDI::write(MIDIMessage m) {
samux 1:80ab0d068708 29 USBDevice::write(EPBULK_IN, m.data, 4, MAX_PACKET_SIZE_EPBULK);
samux 1:80ab0d068708 30 }
samux 1:80ab0d068708 31
samux 1:80ab0d068708 32
samux 1:80ab0d068708 33 void USBMIDI::attach(void (*fptr)(MIDIMessage)) {
samux 1:80ab0d068708 34 midi_evt = fptr;
samux 1:80ab0d068708 35 }
samux 1:80ab0d068708 36
samux 1:80ab0d068708 37
samux 1:80ab0d068708 38 bool USBMIDI::EP2_OUT_callback() {
samux 1:80ab0d068708 39 uint8_t buf[64];
samux 1:80ab0d068708 40 uint32_t len;
samux 1:80ab0d068708 41 readEP(EPBULK_OUT, buf, &len, 64);
samux 1:80ab0d068708 42
samux 1:80ab0d068708 43 if (midi_evt != NULL) {
samux 1:80ab0d068708 44 for (int i=0; i<len; i+=4) {
samux 1:80ab0d068708 45 midi_evt(MIDIMessage(buf+i));
samux 1:80ab0d068708 46 }
samux 1:80ab0d068708 47 }
samux 1:80ab0d068708 48
samux 1:80ab0d068708 49 // We reactivate the endpoint to receive next characters
samux 1:80ab0d068708 50 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
samux 1:80ab0d068708 51 return true;
samux 1:80ab0d068708 52 }
samux 1:80ab0d068708 53
samux 1:80ab0d068708 54
samux 1:80ab0d068708 55
samux 1:80ab0d068708 56 // Called in ISR context
samux 1:80ab0d068708 57 // Set configuration. Return false if the
samux 1:80ab0d068708 58 // configuration is not supported.
samux 1:80ab0d068708 59 bool USBMIDI::USBCallback_setConfiguration(uint8_t configuration) {
samux 1:80ab0d068708 60 if (configuration != DEFAULT_CONFIGURATION) {
samux 1:80ab0d068708 61 return false;
samux 1:80ab0d068708 62 }
samux 1:80ab0d068708 63
samux 1:80ab0d068708 64 // Configure endpoints > 0
samux 1:80ab0d068708 65 addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
samux 1:80ab0d068708 66 addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
samux 1:80ab0d068708 67
samux 1:80ab0d068708 68 // We activate the endpoint to be able to receive data
samux 1:80ab0d068708 69 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
samux 1:80ab0d068708 70 return true;
samux 1:80ab0d068708 71 }
samux 1:80ab0d068708 72
samux 1:80ab0d068708 73
samux 1:80ab0d068708 74 uint8_t * USBMIDI::stringIinterfaceDesc() {
samux 1:80ab0d068708 75 static uint8_t stringIinterfaceDescriptor[] = {
samux 1:80ab0d068708 76 0x0c, //bLength
samux 1:80ab0d068708 77 STRING_DESCRIPTOR, //bDescriptorType 0x03
samux 1:80ab0d068708 78 'A',0,'u',0,'d',0,'i',0,'o',0 //bString iInterface - Audio
samux 1:80ab0d068708 79 };
samux 1:80ab0d068708 80 return stringIinterfaceDescriptor;
samux 1:80ab0d068708 81 }
samux 1:80ab0d068708 82
samux 1:80ab0d068708 83 uint8_t * USBMIDI::stringIproductDesc() {
samux 1:80ab0d068708 84 static uint8_t stringIproductDescriptor[] = {
samux 1:80ab0d068708 85 0x16, //bLength
samux 1:80ab0d068708 86 STRING_DESCRIPTOR, //bDescriptorType 0x03
samux 1:80ab0d068708 87 'M',0,'b',0,'e',0,'d',0,' ',0,'A',0,'u',0,'d',0,'i',0,'o',0 //bString iProduct - Mbed Audio
samux 1:80ab0d068708 88 };
samux 1:80ab0d068708 89 return stringIproductDescriptor;
samux 1:80ab0d068708 90 }
samux 1:80ab0d068708 91
samux 1:80ab0d068708 92
samux 1:80ab0d068708 93 uint8_t * USBMIDI::configurationDesc() {
samux 1:80ab0d068708 94 static uint8_t configDescriptor[] = {
samux 1:80ab0d068708 95 // configuration descriptor
samux 1:80ab0d068708 96 0x09, 0x02, 0x65, 0x00, 0x02, 0x01, 0x00, 0xc0, 0x50,
samux 1:80ab0d068708 97
samux 1:80ab0d068708 98 // The Audio Interface Collection
samux 1:80ab0d068708 99 0x09, 0x04, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, // Standard AC Interface Descriptor
samux 1:80ab0d068708 100 0x09, 0x24, 0x01, 0x00, 0x01, 0x09, 0x00, 0x01, 0x01, // Class-specific AC Interface Descriptor
samux 1:80ab0d068708 101 0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, // MIDIStreaming Interface Descriptors
samux 1:80ab0d068708 102 0x07, 0x24, 0x01, 0x00, 0x01, 0x41, 0x00, // Class-Specific MS Interface Header Descriptor
samux 1:80ab0d068708 103
samux 1:80ab0d068708 104 // MIDI IN JACKS
samux 1:80ab0d068708 105 0x06, 0x24, 0x02, 0x01, 0x01, 0x00,
samux 1:80ab0d068708 106 0x06, 0x24, 0x02, 0x02, 0x02, 0x00,
samux 1:80ab0d068708 107
samux 1:80ab0d068708 108 // MIDI OUT JACKS
samux 1:80ab0d068708 109 0x09, 0x24, 0x03, 0x01, 0x03, 0x01, 0x02, 0x01, 0x00,
samux 1:80ab0d068708 110 0x09, 0x24, 0x03, 0x02, 0x06, 0x01, 0x01, 0x01, 0x00,
samux 1:80ab0d068708 111
samux 1:80ab0d068708 112 // OUT endpoint descriptor
samux 1:80ab0d068708 113 0x09, 0x05, 0x02, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
samux 1:80ab0d068708 114 0x05, 0x25, 0x01, 0x01, 0x01,
samux 1:80ab0d068708 115
samux 1:80ab0d068708 116 // IN endpoint descriptor
samux 1:80ab0d068708 117 0x09, 0x05, 0x82, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
samux 1:80ab0d068708 118 0x05, 0x25, 0x01, 0x01, 0x03,
samux 1:80ab0d068708 119 };
samux 1:80ab0d068708 120 return configDescriptor;
samux 1:80ab0d068708 121 }