Dieter Graef / DISCO_F746NG_USBDevice

partly working USB Device lib for STM32F746NG Discovery both Interface are working

Dependents:   DISCO-F746NG-USB_Device McLighTT project_Keyboard_to_the_Keyboard MIDIInstrumentPADProject ... more

USBMIDI/USBMIDI.cpp@0:0a2eaa300982, 2016-07-31 (annotated)

Committer:
DieterGraef
Date:
Sun Jul 31 17:47:35 2016 +0000
Revision:
0:0a2eaa300982
partly working USB Device library - serial and MIDI is working

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:0a2eaa300982 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
DieterGraef 0:0a2eaa300982 2 *
DieterGraef 0:0a2eaa300982 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
DieterGraef 0:0a2eaa300982 4 * and associated documentation files (the "Software"), to deal in the Software without
DieterGraef 0:0a2eaa300982 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
DieterGraef 0:0a2eaa300982 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
DieterGraef 0:0a2eaa300982 7 * Software is furnished to do so, subject to the following conditions:
DieterGraef 0:0a2eaa300982 8 *
DieterGraef 0:0a2eaa300982 9 * The above copyright notice and this permission notice shall be included in all copies or
DieterGraef 0:0a2eaa300982 10 * substantial portions of the Software.
DieterGraef 0:0a2eaa300982 11 *
DieterGraef 0:0a2eaa300982 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
DieterGraef 0:0a2eaa300982 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
DieterGraef 0:0a2eaa300982 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DieterGraef 0:0a2eaa300982 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
DieterGraef 0:0a2eaa300982 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
DieterGraef 0:0a2eaa300982 17 */
DieterGraef 0:0a2eaa300982 18
DieterGraef 0:0a2eaa300982 19 #include "stdint.h"
DieterGraef 0:0a2eaa300982 20 #include "USBMIDI.h"
DieterGraef 0:0a2eaa300982 21
DieterGraef 0:0a2eaa300982 22
DieterGraef 0:0a2eaa300982 23 USBMIDI::USBMIDI(uint16_t HW_Interface,uint16_t vendor_id, uint16_t product_id, uint16_t product_release)
DieterGraef 0:0a2eaa300982 24 : USBDevice(HW_Interface,vendor_id, product_id, product_release), cur_data(0), data_end(true)
DieterGraef 0:0a2eaa300982 25 {
DieterGraef 0:0a2eaa300982 26 midi_evt = NULL;
DieterGraef 0:0a2eaa300982 27 USBDevice::connect();
DieterGraef 0:0a2eaa300982 28 }
DieterGraef 0:0a2eaa300982 29
DieterGraef 0:0a2eaa300982 30 // write plain MIDIMessage that will be converted to USBMidi event packet
DieterGraef 0:0a2eaa300982 31 void USBMIDI::write(MIDIMessage m) {
DieterGraef 0:0a2eaa300982 32 // first byte keeped for retro-compatibility
DieterGraef 0:0a2eaa300982 33 for(int p=1; p < m.length; p+=3) {
DieterGraef 0:0a2eaa300982 34 uint8_t buf[4];
DieterGraef 0:0a2eaa300982 35 // Midi message to USBMidi event packet
DieterGraef 0:0a2eaa300982 36 buf[0]=m.data[1] >> 4;
DieterGraef 0:0a2eaa300982 37 // SysEx
DieterGraef 0:0a2eaa300982 38 if(buf[0] == 0xF) {
DieterGraef 0:0a2eaa300982 39 if((m.length - p) > 3) {
DieterGraef 0:0a2eaa300982 40 // SysEx start or continue
DieterGraef 0:0a2eaa300982 41 buf[0]=0x4;
DieterGraef 0:0a2eaa300982 42 } else {
DieterGraef 0:0a2eaa300982 43 switch(m.length - p) {
DieterGraef 0:0a2eaa300982 44 case 1:
DieterGraef 0:0a2eaa300982 45 // SysEx end with one byte
DieterGraef 0:0a2eaa300982 46 buf[0]=0x5;
DieterGraef 0:0a2eaa300982 47 break;
DieterGraef 0:0a2eaa300982 48 case 2:
DieterGraef 0:0a2eaa300982 49 // SysEx end with two bytes
DieterGraef 0:0a2eaa300982 50 buf[0]=0x6;
DieterGraef 0:0a2eaa300982 51 break;
DieterGraef 0:0a2eaa300982 52 case 3:
DieterGraef 0:0a2eaa300982 53 // SysEx end with three bytes
DieterGraef 0:0a2eaa300982 54 buf[0]=0x7;
DieterGraef 0:0a2eaa300982 55 break;
DieterGraef 0:0a2eaa300982 56 }
DieterGraef 0:0a2eaa300982 57 }
DieterGraef 0:0a2eaa300982 58 }
DieterGraef 0:0a2eaa300982 59 buf[1]=m.data[p];
DieterGraef 0:0a2eaa300982 60
DieterGraef 0:0a2eaa300982 61 if(p+1 < m.length)
DieterGraef 0:0a2eaa300982 62 buf[2]=m.data[p+1];
DieterGraef 0:0a2eaa300982 63 else
DieterGraef 0:0a2eaa300982 64 buf[2]=0;
DieterGraef 0:0a2eaa300982 65
DieterGraef 0:0a2eaa300982 66 if(p+2 < m.length)
DieterGraef 0:0a2eaa300982 67 buf[3]=m.data[p+2];
DieterGraef 0:0a2eaa300982 68 else
DieterGraef 0:0a2eaa300982 69 buf[3]=0;
DieterGraef 0:0a2eaa300982 70
DieterGraef 0:0a2eaa300982 71 USBDevice::write(EPBULK_IN, buf, 4, MAX_PACKET_SIZE_EPBULK);
DieterGraef 0:0a2eaa300982 72 }
DieterGraef 0:0a2eaa300982 73 }
DieterGraef 0:0a2eaa300982 74
DieterGraef 0:0a2eaa300982 75
DieterGraef 0:0a2eaa300982 76 void USBMIDI::attach(void (*fptr)(MIDIMessage)) {
DieterGraef 0:0a2eaa300982 77 midi_evt = fptr;
DieterGraef 0:0a2eaa300982 78 }
DieterGraef 0:0a2eaa300982 79
DieterGraef 0:0a2eaa300982 80 bool USBMIDI::EPBULK_OUT_callback() {
DieterGraef 0:0a2eaa300982 81 uint8_t buf[64];
DieterGraef 0:0a2eaa300982 82 uint32_t len;
DieterGraef 0:0a2eaa300982 83 readEP(EPBULK_OUT, buf, &len, 64);
DieterGraef 0:0a2eaa300982 84
DieterGraef 0:0a2eaa300982 85 if (midi_evt != NULL) {
DieterGraef 0:0a2eaa300982 86 for (uint32_t i=0; i<len; i+=4) {
DieterGraef 0:0a2eaa300982 87 uint8_t data_read;
DieterGraef 0:0a2eaa300982 88 data_end=true;
DieterGraef 0:0a2eaa300982 89 switch(buf[i]) {
DieterGraef 0:0a2eaa300982 90 case 0x2:
DieterGraef 0:0a2eaa300982 91 // Two-bytes System Common Message - undefined in USBMidi 1.0
DieterGraef 0:0a2eaa300982 92 data_read=2;
DieterGraef 0:0a2eaa300982 93 break;
DieterGraef 0:0a2eaa300982 94 case 0x4:
DieterGraef 0:0a2eaa300982 95 // SysEx start or continue
DieterGraef 0:0a2eaa300982 96 data_end=false;
DieterGraef 0:0a2eaa300982 97 data_read=3;
DieterGraef 0:0a2eaa300982 98 break;
DieterGraef 0:0a2eaa300982 99 case 0x5:
DieterGraef 0:0a2eaa300982 100 // Single-byte System Common Message or SysEx end with one byte
DieterGraef 0:0a2eaa300982 101 data_read=1;
DieterGraef 0:0a2eaa300982 102 break;
DieterGraef 0:0a2eaa300982 103 case 0x6:
DieterGraef 0:0a2eaa300982 104 // SysEx end with two bytes
DieterGraef 0:0a2eaa300982 105 data_read=2;
DieterGraef 0:0a2eaa300982 106 break;
DieterGraef 0:0a2eaa300982 107 case 0xC:
DieterGraef 0:0a2eaa300982 108 // Program change
DieterGraef 0:0a2eaa300982 109 data_read=2;
DieterGraef 0:0a2eaa300982 110 break;
DieterGraef 0:0a2eaa300982 111 case 0xD:
DieterGraef 0:0a2eaa300982 112 // Channel pressure
DieterGraef 0:0a2eaa300982 113 data_read=2;
DieterGraef 0:0a2eaa300982 114 break;
DieterGraef 0:0a2eaa300982 115 case 0xF:
DieterGraef 0:0a2eaa300982 116 // Single byte
DieterGraef 0:0a2eaa300982 117 data_read=1;
DieterGraef 0:0a2eaa300982 118 break;
DieterGraef 0:0a2eaa300982 119 default:
DieterGraef 0:0a2eaa300982 120 // Others three-bytes messages
DieterGraef 0:0a2eaa300982 121 data_read=3;
DieterGraef 0:0a2eaa300982 122 break;
DieterGraef 0:0a2eaa300982 123 }
DieterGraef 0:0a2eaa300982 124
DieterGraef 0:0a2eaa300982 125 for(uint8_t j=1;j<data_read+1;j++) {
DieterGraef 0:0a2eaa300982 126 data[cur_data]=buf[i+j];
DieterGraef 0:0a2eaa300982 127 cur_data++;
DieterGraef 0:0a2eaa300982 128 }
DieterGraef 0:0a2eaa300982 129
DieterGraef 0:0a2eaa300982 130 if(data_end) {
DieterGraef 0:0a2eaa300982 131 midi_evt(MIDIMessage(data,cur_data));
DieterGraef 0:0a2eaa300982 132 cur_data=0;
DieterGraef 0:0a2eaa300982 133 }
DieterGraef 0:0a2eaa300982 134 }
DieterGraef 0:0a2eaa300982 135 }
DieterGraef 0:0a2eaa300982 136
DieterGraef 0:0a2eaa300982 137 // We reactivate the endpoint to receive next characters
DieterGraef 0:0a2eaa300982 138 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
DieterGraef 0:0a2eaa300982 139 return true;
DieterGraef 0:0a2eaa300982 140 }
DieterGraef 0:0a2eaa300982 141
DieterGraef 0:0a2eaa300982 142 // Called in ISR context
DieterGraef 0:0a2eaa300982 143 // Set configuration. Return false if the
DieterGraef 0:0a2eaa300982 144 // configuration is not supported.
DieterGraef 0:0a2eaa300982 145 bool USBMIDI::USBCallback_setConfiguration(uint8_t configuration) {
DieterGraef 0:0a2eaa300982 146 if (configuration != DEFAULT_CONFIGURATION) {
DieterGraef 0:0a2eaa300982 147 return false;
DieterGraef 0:0a2eaa300982 148 }
DieterGraef 0:0a2eaa300982 149
DieterGraef 0:0a2eaa300982 150 // Configure endpoints > 0
DieterGraef 0:0a2eaa300982 151 addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
DieterGraef 0:0a2eaa300982 152 addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
DieterGraef 0:0a2eaa300982 153
DieterGraef 0:0a2eaa300982 154 // We activate the endpoint to be able to receive data
DieterGraef 0:0a2eaa300982 155 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
DieterGraef 0:0a2eaa300982 156 return true;
DieterGraef 0:0a2eaa300982 157 }
DieterGraef 0:0a2eaa300982 158
DieterGraef 0:0a2eaa300982 159
DieterGraef 0:0a2eaa300982 160 uint8_t * USBMIDI::stringIinterfaceDesc() {
DieterGraef 0:0a2eaa300982 161 static uint8_t stringIinterfaceDescriptor[] = {
DieterGraef 0:0a2eaa300982 162 0x0c, //bLength
DieterGraef 0:0a2eaa300982 163 STRING_DESCRIPTOR, //bDescriptorType 0x03
DieterGraef 0:0a2eaa300982 164 'A',0,'u',0,'d',0,'i',0,'o',0 //bString iInterface - Audio
DieterGraef 0:0a2eaa300982 165 };
DieterGraef 0:0a2eaa300982 166 return stringIinterfaceDescriptor;
DieterGraef 0:0a2eaa300982 167 }
DieterGraef 0:0a2eaa300982 168
DieterGraef 0:0a2eaa300982 169 uint8_t * USBMIDI::stringIproductDesc() {
DieterGraef 0:0a2eaa300982 170 static uint8_t stringIproductDescriptor[] = {
DieterGraef 0:0a2eaa300982 171 0x16, //bLength
DieterGraef 0:0a2eaa300982 172 STRING_DESCRIPTOR, //bDescriptorType 0x03
DieterGraef 0:0a2eaa300982 173 'M',0,'b',0,'e',0,'d',0,' ',0,'A',0,'u',0,'d',0,'i',0,'o',0 //bString iProduct - Mbed Audio
DieterGraef 0:0a2eaa300982 174 };
DieterGraef 0:0a2eaa300982 175 return stringIproductDescriptor;
DieterGraef 0:0a2eaa300982 176 }
DieterGraef 0:0a2eaa300982 177
DieterGraef 0:0a2eaa300982 178
DieterGraef 0:0a2eaa300982 179 uint8_t * USBMIDI::configurationDesc() {
DieterGraef 0:0a2eaa300982 180 static uint8_t configDescriptor[] = {
DieterGraef 0:0a2eaa300982 181 // configuration descriptor
DieterGraef 0:0a2eaa300982 182 0x09, 0x02, 0x65, 0x00, 0x02, 0x01, 0x00, 0xc0, 0x50,
DieterGraef 0:0a2eaa300982 183
DieterGraef 0:0a2eaa300982 184 // The Audio Interface Collection
DieterGraef 0:0a2eaa300982 185 0x09, 0x04, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, // Standard AC Interface Descriptor
DieterGraef 0:0a2eaa300982 186 0x09, 0x24, 0x01, 0x00, 0x01, 0x09, 0x00, 0x01, 0x01, // Class-specific AC Interface Descriptor
DieterGraef 0:0a2eaa300982 187 0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, // MIDIStreaming Interface Descriptors
DieterGraef 0:0a2eaa300982 188 0x07, 0x24, 0x01, 0x00, 0x01, 0x41, 0x00, // Class-Specific MS Interface Header Descriptor
DieterGraef 0:0a2eaa300982 189
DieterGraef 0:0a2eaa300982 190 // MIDI IN JACKS
DieterGraef 0:0a2eaa300982 191 0x06, 0x24, 0x02, 0x01, 0x01, 0x00,
DieterGraef 0:0a2eaa300982 192 0x06, 0x24, 0x02, 0x02, 0x02, 0x00,
DieterGraef 0:0a2eaa300982 193
DieterGraef 0:0a2eaa300982 194 // MIDI OUT JACKS
DieterGraef 0:0a2eaa300982 195 0x09, 0x24, 0x03, 0x01, 0x03, 0x01, 0x02, 0x01, 0x00,
DieterGraef 0:0a2eaa300982 196 0x09, 0x24, 0x03, 0x02, 0x06, 0x01, 0x01, 0x01, 0x00,
DieterGraef 0:0a2eaa300982 197
DieterGraef 0:0a2eaa300982 198 // OUT endpoint descriptor
DieterGraef 0:0a2eaa300982 199 0x09, 0x05, 0x02, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
DieterGraef 0:0a2eaa300982 200 0x05, 0x25, 0x01, 0x01, 0x01,
DieterGraef 0:0a2eaa300982 201
DieterGraef 0:0a2eaa300982 202 // IN endpoint descriptor
DieterGraef 0:0a2eaa300982 203 0x09, 0x05, 0x82, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
DieterGraef 0:0a2eaa300982 204 0x05, 0x25, 0x01, 0x01, 0x03,
DieterGraef 0:0a2eaa300982 205 };
DieterGraef 0:0a2eaa300982 206 return configDescriptor;
DieterGraef 0:0a2eaa300982 207 }