Patrick Pollet / USBDevice

usb device

USBMIDI/USBMIDI.cpp@0:c1e89c49eae5, 2022-05-14 (annotated)

Committer:
ppo
Date:
Sat May 14 17:24:10 2022 +0000
Revision:
0:c1e89c49eae5
commit

Who changed what in which revision?

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ppo 0:c1e89c49eae5 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
ppo 0:c1e89c49eae5 2 *
ppo 0:c1e89c49eae5 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
ppo 0:c1e89c49eae5 4 * and associated documentation files (the "Software"), to deal in the Software without
ppo 0:c1e89c49eae5 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
ppo 0:c1e89c49eae5 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
ppo 0:c1e89c49eae5 7 * Software is furnished to do so, subject to the following conditions:
ppo 0:c1e89c49eae5 8 *
ppo 0:c1e89c49eae5 9 * The above copyright notice and this permission notice shall be included in all copies or
ppo 0:c1e89c49eae5 10 * substantial portions of the Software.
ppo 0:c1e89c49eae5 11 *
ppo 0:c1e89c49eae5 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
ppo 0:c1e89c49eae5 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
ppo 0:c1e89c49eae5 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
ppo 0:c1e89c49eae5 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
ppo 0:c1e89c49eae5 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
ppo 0:c1e89c49eae5 17 */
ppo 0:c1e89c49eae5 18
ppo 0:c1e89c49eae5 19 #include "stdint.h"
ppo 0:c1e89c49eae5 20 #include "USBMIDI.h"
ppo 0:c1e89c49eae5 21
ppo 0:c1e89c49eae5 22
ppo 0:c1e89c49eae5 23 USBMIDI::USBMIDI(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) {
ppo 0:c1e89c49eae5 24 midi_evt = NULL;
ppo 0:c1e89c49eae5 25 USBDevice::connect();
ppo 0:c1e89c49eae5 26 }
ppo 0:c1e89c49eae5 27
ppo 0:c1e89c49eae5 28 void USBMIDI::write(MIDIMessage m) {
ppo 0:c1e89c49eae5 29 USBDevice::write(EPBULK_IN, m.data, 4, MAX_PACKET_SIZE_EPBULK);
ppo 0:c1e89c49eae5 30 }
ppo 0:c1e89c49eae5 31
ppo 0:c1e89c49eae5 32
ppo 0:c1e89c49eae5 33 void USBMIDI::attach(void (*fptr)(MIDIMessage)) {
ppo 0:c1e89c49eae5 34 midi_evt = fptr;
ppo 0:c1e89c49eae5 35 }
ppo 0:c1e89c49eae5 36
ppo 0:c1e89c49eae5 37
ppo 0:c1e89c49eae5 38 bool USBMIDI::EP2_OUT_callback() {
ppo 0:c1e89c49eae5 39 uint8_t buf[64];
ppo 0:c1e89c49eae5 40 uint32_t len;
ppo 0:c1e89c49eae5 41 readEP(EPBULK_OUT, buf, &len, 64);
ppo 0:c1e89c49eae5 42
ppo 0:c1e89c49eae5 43 if (midi_evt != NULL) {
ppo 0:c1e89c49eae5 44 for (int i=0; i<len; i+=4) {
ppo 0:c1e89c49eae5 45 midi_evt(MIDIMessage(buf+i));
ppo 0:c1e89c49eae5 46 }
ppo 0:c1e89c49eae5 47 }
ppo 0:c1e89c49eae5 48
ppo 0:c1e89c49eae5 49 // We reactivate the endpoint to receive next characters
ppo 0:c1e89c49eae5 50 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
ppo 0:c1e89c49eae5 51 return true;
ppo 0:c1e89c49eae5 52 }
ppo 0:c1e89c49eae5 53
ppo 0:c1e89c49eae5 54
ppo 0:c1e89c49eae5 55
ppo 0:c1e89c49eae5 56 // Called in ISR context
ppo 0:c1e89c49eae5 57 // Set configuration. Return false if the
ppo 0:c1e89c49eae5 58 // configuration is not supported.
ppo 0:c1e89c49eae5 59 bool USBMIDI::USBCallback_setConfiguration(uint8_t configuration) {
ppo 0:c1e89c49eae5 60 if (configuration != DEFAULT_CONFIGURATION) {
ppo 0:c1e89c49eae5 61 return false;
ppo 0:c1e89c49eae5 62 }
ppo 0:c1e89c49eae5 63
ppo 0:c1e89c49eae5 64 // Configure endpoints > 0
ppo 0:c1e89c49eae5 65 addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
ppo 0:c1e89c49eae5 66 addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
ppo 0:c1e89c49eae5 67
ppo 0:c1e89c49eae5 68 // We activate the endpoint to be able to receive data
ppo 0:c1e89c49eae5 69 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
ppo 0:c1e89c49eae5 70 return true;
ppo 0:c1e89c49eae5 71 }
ppo 0:c1e89c49eae5 72
ppo 0:c1e89c49eae5 73
ppo 0:c1e89c49eae5 74 uint8_t * USBMIDI::stringIinterfaceDesc() {
ppo 0:c1e89c49eae5 75 static uint8_t stringIinterfaceDescriptor[] = {
ppo 0:c1e89c49eae5 76 0x0c, //bLength
ppo 0:c1e89c49eae5 77 STRING_DESCRIPTOR, //bDescriptorType 0x03
ppo 0:c1e89c49eae5 78 'A',0,'u',0,'d',0,'i',0,'o',0 //bString iInterface - Audio
ppo 0:c1e89c49eae5 79 };
ppo 0:c1e89c49eae5 80 return stringIinterfaceDescriptor;
ppo 0:c1e89c49eae5 81 }
ppo 0:c1e89c49eae5 82
ppo 0:c1e89c49eae5 83 uint8_t * USBMIDI::stringIproductDesc() {
ppo 0:c1e89c49eae5 84 static uint8_t stringIproductDescriptor[] = {
ppo 0:c1e89c49eae5 85 0x16, //bLength
ppo 0:c1e89c49eae5 86 STRING_DESCRIPTOR, //bDescriptorType 0x03
ppo 0:c1e89c49eae5 87 'M',0,'b',0,'e',0,'d',0,' ',0,'A',0,'u',0,'d',0,'i',0,'o',0 //bString iProduct - Mbed Audio
ppo 0:c1e89c49eae5 88 };
ppo 0:c1e89c49eae5 89 return stringIproductDescriptor;
ppo 0:c1e89c49eae5 90 }
ppo 0:c1e89c49eae5 91
ppo 0:c1e89c49eae5 92
ppo 0:c1e89c49eae5 93 uint8_t * USBMIDI::configurationDesc() {
ppo 0:c1e89c49eae5 94 static uint8_t configDescriptor[] = {
ppo 0:c1e89c49eae5 95 // configuration descriptor
ppo 0:c1e89c49eae5 96 0x09, 0x02, 0x65, 0x00, 0x02, 0x01, 0x00, 0xc0, 0x50,
ppo 0:c1e89c49eae5 97
ppo 0:c1e89c49eae5 98 // The Audio Interface Collection
ppo 0:c1e89c49eae5 99 0x09, 0x04, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, // Standard AC Interface Descriptor
ppo 0:c1e89c49eae5 100 0x09, 0x24, 0x01, 0x00, 0x01, 0x09, 0x00, 0x01, 0x01, // Class-specific AC Interface Descriptor
ppo 0:c1e89c49eae5 101 0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, // MIDIStreaming Interface Descriptors
ppo 0:c1e89c49eae5 102 0x07, 0x24, 0x01, 0x00, 0x01, 0x41, 0x00, // Class-Specific MS Interface Header Descriptor
ppo 0:c1e89c49eae5 103
ppo 0:c1e89c49eae5 104 // MIDI IN JACKS
ppo 0:c1e89c49eae5 105 0x06, 0x24, 0x02, 0x01, 0x01, 0x00,
ppo 0:c1e89c49eae5 106 0x06, 0x24, 0x02, 0x02, 0x02, 0x00,
ppo 0:c1e89c49eae5 107
ppo 0:c1e89c49eae5 108 // MIDI OUT JACKS
ppo 0:c1e89c49eae5 109 0x09, 0x24, 0x03, 0x01, 0x03, 0x01, 0x02, 0x01, 0x00,
ppo 0:c1e89c49eae5 110 0x09, 0x24, 0x03, 0x02, 0x06, 0x01, 0x01, 0x01, 0x00,
ppo 0:c1e89c49eae5 111
ppo 0:c1e89c49eae5 112 // OUT endpoint descriptor
ppo 0:c1e89c49eae5 113 0x09, 0x05, 0x02, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
ppo 0:c1e89c49eae5 114 0x05, 0x25, 0x01, 0x01, 0x01,
ppo 0:c1e89c49eae5 115
ppo 0:c1e89c49eae5 116 // IN endpoint descriptor
ppo 0:c1e89c49eae5 117 0x09, 0x05, 0x82, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
ppo 0:c1e89c49eae5 118 0x05, 0x25, 0x01, 0x01, 0x03,
ppo 0:c1e89c49eae5 119 };
ppo 0:c1e89c49eae5 120 return configDescriptor;
ppo 0:c1e89c49eae5 121 }