Samuel Mokrani / Mbed 2 deprecated USBMSD_SD_HelloWorld_Mbed

USBMSD SD card Hello World for Mbed platforms

Dependencies:   mbed USBMSD_SD USBDevice

USBDevice/USBAudio/USBAudio.cpp@14:757226626acb, 2011-12-06 (annotated)

Committer:
samux
Date:
Tue Dec 06 12:07:12 2011 +0000
Revision:
14:757226626acb
protection enabled when usb cable plugged. filesystem has no access when plugged

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 14:757226626acb 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
samux 14:757226626acb 2 *
samux 14:757226626acb 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 14:757226626acb 4 * and associated documentation files (the "Software"), to deal in the Software without
samux 14:757226626acb 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
samux 14:757226626acb 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
samux 14:757226626acb 7 * Software is furnished to do so, subject to the following conditions:
samux 14:757226626acb 8 *
samux 14:757226626acb 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 14:757226626acb 10 * substantial portions of the Software.
samux 14:757226626acb 11 *
samux 14:757226626acb 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 14:757226626acb 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 14:757226626acb 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 14:757226626acb 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 14:757226626acb 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 14:757226626acb 17 */
samux 14:757226626acb 18
samux 14:757226626acb 19 #include "stdint.h"
samux 14:757226626acb 20 #include "USBAudio.h"
samux 14:757226626acb 21 #include "USBBusInterface.h"
samux 14:757226626acb 22 #include "USBAudio_Types.h"
samux 14:757226626acb 23
samux 14:757226626acb 24
samux 14:757226626acb 25
samux 14:757226626acb 26 USBAudio::USBAudio(uint32_t frequency, uint8_t channel_nb, uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) {
samux 14:757226626acb 27 mute = 0;
samux 14:757226626acb 28 volCur = 0x0080;
samux 14:757226626acb 29 volMin = 0x0000;
samux 14:757226626acb 30 volMax = 0x0100;
samux 14:757226626acb 31 volRes = 0x0004;
samux 14:757226626acb 32 available = false;
samux 14:757226626acb 33
samux 14:757226626acb 34 FREQ = frequency;
samux 14:757226626acb 35
samux 14:757226626acb 36 this->channel_nb = channel_nb;
samux 14:757226626acb 37
samux 14:757226626acb 38 // stereo -> *2, mono -> *1
samux 14:757226626acb 39 PACKET_SIZE_ISO = (FREQ / 500) * channel_nb;
samux 14:757226626acb 40
samux 14:757226626acb 41 // STEREO -> left and right
samux 14:757226626acb 42 channel_config = (channel_nb == 1) ? CHANNEL_M : CHANNEL_L + CHANNEL_R;
samux 14:757226626acb 43
samux 14:757226626acb 44 SOF_handler = false;
samux 14:757226626acb 45
samux 14:757226626acb 46 buf_stream = NULL;
samux 14:757226626acb 47
samux 14:757226626acb 48 // connect the device
samux 14:757226626acb 49 USBDevice::connect();
samux 14:757226626acb 50 }
samux 14:757226626acb 51
samux 14:757226626acb 52 bool USBAudio::read(uint8_t * buf) {
samux 14:757226626acb 53 buf_stream = buf;
samux 14:757226626acb 54 while (!available);
samux 14:757226626acb 55 available = false;
samux 14:757226626acb 56 buf_stream = NULL;
samux 14:757226626acb 57 return true;
samux 14:757226626acb 58 }
samux 14:757226626acb 59
samux 14:757226626acb 60 bool USBAudio::readNB(uint8_t * buf) {
samux 14:757226626acb 61 buf_stream = buf;
samux 14:757226626acb 62 SOF_handler = false;
samux 14:757226626acb 63 while (!SOF_handler);
samux 14:757226626acb 64 if (available) {
samux 14:757226626acb 65 available = false;
samux 14:757226626acb 66 buf_stream = NULL;
samux 14:757226626acb 67 return true;
samux 14:757226626acb 68 }
samux 14:757226626acb 69 buf_stream = NULL;
samux 14:757226626acb 70 return false;
samux 14:757226626acb 71 }
samux 14:757226626acb 72
samux 14:757226626acb 73
samux 14:757226626acb 74 float USBAudio::getVolume() {
samux 14:757226626acb 75 return (mute) ? 0.0 : (float)volCur/(float)volMax;
samux 14:757226626acb 76 }
samux 14:757226626acb 77
samux 14:757226626acb 78
samux 14:757226626acb 79 // Called in ISR context on each start of frame
samux 14:757226626acb 80 void USBAudio::SOF(int frameNumber) {
samux 14:757226626acb 81 uint16_t size = 0;
samux 14:757226626acb 82
samux 14:757226626acb 83 // read the isochronous endpoint
samux 14:757226626acb 84 if (buf_stream != NULL) {
samux 14:757226626acb 85 USBDevice::readEP_NB(EP3OUT, buf_stream, &size, PACKET_SIZE_ISO);
samux 14:757226626acb 86 }
samux 14:757226626acb 87
samux 14:757226626acb 88 // if we read something, modify the flag "available"
samux 14:757226626acb 89 available = (size) ? true : false;
samux 14:757226626acb 90
samux 14:757226626acb 91 // activate readings on the isochronous
samux 14:757226626acb 92 readStart(EP3OUT, PACKET_SIZE_ISO);
samux 14:757226626acb 93
samux 14:757226626acb 94 SOF_handler = true;
samux 14:757226626acb 95 }
samux 14:757226626acb 96
samux 14:757226626acb 97
samux 14:757226626acb 98 // Called in ISR context
samux 14:757226626acb 99 // Set configuration. Return false if the configuration is not supported.
samux 14:757226626acb 100 bool USBAudio::USBCallback_setConfiguration(uint8_t configuration) {
samux 14:757226626acb 101 if (configuration != DEFAULT_CONFIGURATION) {
samux 14:757226626acb 102 return false;
samux 14:757226626acb 103 }
samux 14:757226626acb 104
samux 14:757226626acb 105 // Configure isochronous endpoint
samux 14:757226626acb 106 realiseEndpoint(EP3OUT, PACKET_SIZE_ISO, ISOCHRONOUS);
samux 14:757226626acb 107
samux 14:757226626acb 108 // activate readings on this endpoint
samux 14:757226626acb 109 readStart(EP3OUT, PACKET_SIZE_ISO);
samux 14:757226626acb 110 return true;
samux 14:757226626acb 111 }
samux 14:757226626acb 112
samux 14:757226626acb 113
samux 14:757226626acb 114 // Called in ISR context
samux 14:757226626acb 115 // Set alternate setting. Return false if the alternate setting is not supported
samux 14:757226626acb 116 bool USBAudio::USBCallback_setInterface(uint16_t interface, uint8_t alternate) {
samux 14:757226626acb 117 if (interface == 0 && alternate == 0) {
samux 14:757226626acb 118 return true;
samux 14:757226626acb 119 }
samux 14:757226626acb 120 if (interface == 1 && (alternate == 0 || alternate == 1)) {
samux 14:757226626acb 121 return true;
samux 14:757226626acb 122 }
samux 14:757226626acb 123 return false;
samux 14:757226626acb 124 }
samux 14:757226626acb 125
samux 14:757226626acb 126
samux 14:757226626acb 127
samux 14:757226626acb 128 // Called in ISR context
samux 14:757226626acb 129 // Called by USBDevice on Endpoint0 request
samux 14:757226626acb 130 // This is used to handle extensions to standard requests and class specific requests.
samux 14:757226626acb 131 // Return true if class handles this request
samux 14:757226626acb 132 bool USBAudio::USBCallback_request() {
samux 14:757226626acb 133 bool success = false;
samux 14:757226626acb 134 CONTROL_TRANSFER * transfer = getTransferPtr();
samux 14:757226626acb 135
samux 14:757226626acb 136 // Process class-specific requests
samux 14:757226626acb 137 if (transfer->setup.bmRequestType.Type == CLASS_TYPE) {
samux 14:757226626acb 138
samux 14:757226626acb 139 // Feature Unit: Interface = 0, ID = 2
samux 14:757226626acb 140 if (transfer->setup.wIndex == 0x0200) {
samux 14:757226626acb 141
samux 14:757226626acb 142 // Master Channel
samux 14:757226626acb 143 if ((transfer->setup.wValue & 0xff) == 0) {
samux 14:757226626acb 144
samux 14:757226626acb 145 switch (transfer->setup.wValue >> 8) {
samux 14:757226626acb 146 case MUTE_CONTROL:
samux 14:757226626acb 147 switch (transfer->setup.bRequest) {
samux 14:757226626acb 148 case REQUEST_GET_CUR:
samux 14:757226626acb 149 transfer->remaining = 1;
samux 14:757226626acb 150 transfer->ptr = &mute;
samux 14:757226626acb 151 transfer->direction = DEVICE_TO_HOST;
samux 14:757226626acb 152 success = true;
samux 14:757226626acb 153 break;
samux 14:757226626acb 154
samux 14:757226626acb 155 case REQUEST_SET_CUR:
samux 14:757226626acb 156 transfer->remaining = 1;
samux 14:757226626acb 157 transfer->notify = true;
samux 14:757226626acb 158 transfer->direction = HOST_TO_DEVICE;
samux 14:757226626acb 159 success = true;
samux 14:757226626acb 160 break;
samux 14:757226626acb 161 default:
samux 14:757226626acb 162 break;
samux 14:757226626acb 163 }
samux 14:757226626acb 164 break;
samux 14:757226626acb 165 case VOLUME_CONTROL:
samux 14:757226626acb 166 switch (transfer->setup.bRequest) {
samux 14:757226626acb 167 case REQUEST_GET_CUR:
samux 14:757226626acb 168 transfer->remaining = 2;
samux 14:757226626acb 169 transfer->ptr = (uint8_t *)&volCur;
samux 14:757226626acb 170 transfer->direction = DEVICE_TO_HOST;
samux 14:757226626acb 171 success = true;
samux 14:757226626acb 172 break;
samux 14:757226626acb 173 case REQUEST_GET_MIN:
samux 14:757226626acb 174 transfer->remaining = 2;
samux 14:757226626acb 175 transfer->ptr = (uint8_t *)&volMin;
samux 14:757226626acb 176 transfer->direction = DEVICE_TO_HOST;
samux 14:757226626acb 177 success = true;
samux 14:757226626acb 178 break;
samux 14:757226626acb 179 case REQUEST_GET_MAX:
samux 14:757226626acb 180 transfer->remaining = 2;
samux 14:757226626acb 181 transfer->ptr = (uint8_t *)&volMax;
samux 14:757226626acb 182 transfer->direction = DEVICE_TO_HOST;
samux 14:757226626acb 183 success = true;
samux 14:757226626acb 184 break;
samux 14:757226626acb 185 case REQUEST_GET_RES:
samux 14:757226626acb 186 transfer->remaining = 2;
samux 14:757226626acb 187 transfer->ptr = (uint8_t *)&volRes;
samux 14:757226626acb 188 transfer->direction = DEVICE_TO_HOST;
samux 14:757226626acb 189 success = true;
samux 14:757226626acb 190 break;
samux 14:757226626acb 191
samux 14:757226626acb 192 case REQUEST_SET_CUR:
samux 14:757226626acb 193 transfer->remaining = 2;
samux 14:757226626acb 194 transfer->notify = true;
samux 14:757226626acb 195 transfer->direction = HOST_TO_DEVICE;
samux 14:757226626acb 196 success = true;
samux 14:757226626acb 197 break;
samux 14:757226626acb 198 case REQUEST_SET_MIN:
samux 14:757226626acb 199 transfer->remaining = 2;
samux 14:757226626acb 200 transfer->notify = true;
samux 14:757226626acb 201 transfer->direction = HOST_TO_DEVICE;
samux 14:757226626acb 202 success = true;
samux 14:757226626acb 203 break;
samux 14:757226626acb 204 case REQUEST_SET_MAX:
samux 14:757226626acb 205 transfer->remaining = 2;
samux 14:757226626acb 206 transfer->notify = true;
samux 14:757226626acb 207 transfer->direction = HOST_TO_DEVICE;
samux 14:757226626acb 208 success = true;
samux 14:757226626acb 209 break;
samux 14:757226626acb 210 case REQUEST_SET_RES:
samux 14:757226626acb 211 transfer->remaining = 2;
samux 14:757226626acb 212 transfer->notify = true;
samux 14:757226626acb 213 transfer->direction = HOST_TO_DEVICE;
samux 14:757226626acb 214 success = true;
samux 14:757226626acb 215 break;
samux 14:757226626acb 216 }
samux 14:757226626acb 217 break;
samux 14:757226626acb 218 default:
samux 14:757226626acb 219 break;
samux 14:757226626acb 220 }
samux 14:757226626acb 221 }
samux 14:757226626acb 222 }
samux 14:757226626acb 223 }
samux 14:757226626acb 224 return success;
samux 14:757226626acb 225 }
samux 14:757226626acb 226
samux 14:757226626acb 227
samux 14:757226626acb 228 // Called in ISR context when a data OUT stage has been performed
samux 14:757226626acb 229 void USBAudio::USBCallback_requestCompleted(uint8_t * buf, uint16_t length) {
samux 14:757226626acb 230 uint16_t data = *((uint16_t *)buf);
samux 14:757226626acb 231 CONTROL_TRANSFER * transfer = getTransferPtr();
samux 14:757226626acb 232 switch (transfer->setup.wValue >> 8) {
samux 14:757226626acb 233 case MUTE_CONTROL:
samux 14:757226626acb 234 switch (transfer->setup.bRequest) {
samux 14:757226626acb 235 case REQUEST_SET_CUR:
samux 14:757226626acb 236 mute = data & 0xff;
samux 14:757226626acb 237 updateVol.call();
samux 14:757226626acb 238 break;
samux 14:757226626acb 239 default:
samux 14:757226626acb 240 break;
samux 14:757226626acb 241 }
samux 14:757226626acb 242 break;
samux 14:757226626acb 243 case VOLUME_CONTROL:
samux 14:757226626acb 244 switch (transfer->setup.bRequest) {
samux 14:757226626acb 245 case REQUEST_SET_CUR:
samux 14:757226626acb 246 volCur = data;
samux 14:757226626acb 247 updateVol.call();
samux 14:757226626acb 248 break;
samux 14:757226626acb 249 default:
samux 14:757226626acb 250 break;
samux 14:757226626acb 251 }
samux 14:757226626acb 252 break;
samux 14:757226626acb 253 default:
samux 14:757226626acb 254 break;
samux 14:757226626acb 255 }
samux 14:757226626acb 256 }
samux 14:757226626acb 257
samux 14:757226626acb 258
samux 14:757226626acb 259
samux 14:757226626acb 260 #define TOTAL_DESCRIPTOR_LENGTH ((1 * CONFIGURATION_DESCRIPTOR_LENGTH) \
samux 14:757226626acb 261 + (3 * INTERFACE_DESCRIPTOR_LENGTH) \
samux 14:757226626acb 262 + (1 * CONTROL_INTERFACE_DESCRIPTOR_LENGTH) \
samux 14:757226626acb 263 + (1 * INPUT_TERMINAL_DESCRIPTOR_LENGTH) \
samux 14:757226626acb 264 + (1 * FEATURE_UNIT_DESCRIPTOR_LENGTH) \
samux 14:757226626acb 265 + (1 * OUTPUT_TERMINAL_DESCRIPTOR_LENGTH) \
samux 14:757226626acb 266 + (1 * STREAMING_INTERFACE_DESCRIPTOR_LENGTH) \
samux 14:757226626acb 267 + (1 * FORMAT_TYPE_I_DESCRIPTOR_LENGTH) \
samux 14:757226626acb 268 + (1 * (ENDPOINT_DESCRIPTOR_LENGTH + 2)) \
samux 14:757226626acb 269 + (1 * STREAMING_ENDPOINT_DESCRIPTOR_LENGTH) )
samux 14:757226626acb 270
samux 14:757226626acb 271 #define TOTAL_CONTROL_INTF_LENGTH (CONTROL_INTERFACE_DESCRIPTOR_LENGTH + \
samux 14:757226626acb 272 INPUT_TERMINAL_DESCRIPTOR_LENGTH + \
samux 14:757226626acb 273 FEATURE_UNIT_DESCRIPTOR_LENGTH + \
samux 14:757226626acb 274 OUTPUT_TERMINAL_DESCRIPTOR_LENGTH)
samux 14:757226626acb 275
samux 14:757226626acb 276 uint8_t * USBAudio::configurationDesc() {
samux 14:757226626acb 277 static uint8_t configDescriptor[] = {
samux 14:757226626acb 278 // Configuration 1
samux 14:757226626acb 279 CONFIGURATION_DESCRIPTOR_LENGTH, // bLength
samux 14:757226626acb 280 CONFIGURATION_DESCRIPTOR, // bDescriptorType
samux 14:757226626acb 281 LSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (LSB)
samux 14:757226626acb 282 MSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (MSB)
samux 14:757226626acb 283 0x02, // bNumInterfaces
samux 14:757226626acb 284 DEFAULT_CONFIGURATION, // bConfigurationValue
samux 14:757226626acb 285 0x00, // iConfiguration
samux 14:757226626acb 286 0x80, // bmAttributes
samux 14:757226626acb 287 50, // bMaxPower
samux 14:757226626acb 288
samux 14:757226626acb 289 // Interface 0, Alternate Setting 0, Audio Control
samux 14:757226626acb 290 INTERFACE_DESCRIPTOR_LENGTH, // bLength
samux 14:757226626acb 291 INTERFACE_DESCRIPTOR, // bDescriptorType
samux 14:757226626acb 292 0x00, // bInterfaceNumber
samux 14:757226626acb 293 0x00, // bAlternateSetting
samux 14:757226626acb 294 0x00, // bNumEndpoints
samux 14:757226626acb 295 AUDIO_CLASS, // bInterfaceClass
samux 14:757226626acb 296 SUBCLASS_AUDIOCONTROL, // bInterfaceSubClass
samux 14:757226626acb 297 0x00, // bInterfaceProtocol
samux 14:757226626acb 298 0x00, // iInterface
samux 14:757226626acb 299
samux 14:757226626acb 300
samux 14:757226626acb 301 // Audio Control Interface
samux 14:757226626acb 302 CONTROL_INTERFACE_DESCRIPTOR_LENGTH, // bLength
samux 14:757226626acb 303 INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
samux 14:757226626acb 304 CONTROL_HEADER, // bDescriptorSubtype
samux 14:757226626acb 305 LSB(0x0100), // bcdADC (LSB)
samux 14:757226626acb 306 MSB(0x0100), // bcdADC (MSB)
samux 14:757226626acb 307 LSB(TOTAL_CONTROL_INTF_LENGTH), // wTotalLength
samux 14:757226626acb 308 MSB(TOTAL_CONTROL_INTF_LENGTH), // wTotalLength
samux 14:757226626acb 309 0x01, // bInCollection
samux 14:757226626acb 310 0x01, // baInterfaceNr
samux 14:757226626acb 311
samux 14:757226626acb 312 // Audio Input Terminal
samux 14:757226626acb 313 INPUT_TERMINAL_DESCRIPTOR_LENGTH, // bLength
samux 14:757226626acb 314 INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
samux 14:757226626acb 315 CONTROL_INPUT_TERMINAL, // bDescriptorSubtype
samux 14:757226626acb 316 0x01, // bTerminalID
samux 14:757226626acb 317 LSB(TERMINAL_USB_STREAMING), // wTerminalType
samux 14:757226626acb 318 MSB(TERMINAL_USB_STREAMING), // wTerminalType
samux 14:757226626acb 319 0x00, // bAssocTerminal
samux 14:757226626acb 320 channel_nb, // bNrChannels
samux 14:757226626acb 321 LSB(channel_config), // wChannelConfig
samux 14:757226626acb 322 MSB(channel_config), // wChannelConfig
samux 14:757226626acb 323 0x00, // iChannelNames
samux 14:757226626acb 324 0x00, // iTerminal
samux 14:757226626acb 325
samux 14:757226626acb 326 // Audio Feature Unit
samux 14:757226626acb 327 FEATURE_UNIT_DESCRIPTOR_LENGTH, // bLength
samux 14:757226626acb 328 INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
samux 14:757226626acb 329 CONTROL_FEATURE_UNIT, // bDescriptorSubtype
samux 14:757226626acb 330 0x02, // bUnitID
samux 14:757226626acb 331 0x01, // bSourceID
samux 14:757226626acb 332 0x01, // bControlSize
samux 14:757226626acb 333 CONTROL_MUTE |
samux 14:757226626acb 334 CONTROL_VOLUME, // bmaControls(0)
samux 14:757226626acb 335 0x00, // bmaControls(1)
samux 14:757226626acb 336 0x00, // iTerminal
samux 14:757226626acb 337
samux 14:757226626acb 338 // Audio Output Terminal
samux 14:757226626acb 339 OUTPUT_TERMINAL_DESCRIPTOR_LENGTH, // bLength
samux 14:757226626acb 340 INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
samux 14:757226626acb 341 CONTROL_OUTPUT_TERMINAL, // bDescriptorSubtype
samux 14:757226626acb 342 0x03, // bTerminalID
samux 14:757226626acb 343 LSB(TERMINAL_SPEAKER), // wTerminalType
samux 14:757226626acb 344 MSB(TERMINAL_SPEAKER), // wTerminalType
samux 14:757226626acb 345 0x00, // bAssocTerminal
samux 14:757226626acb 346 0x02, // bSourceID
samux 14:757226626acb 347 0x00, // iTerminal
samux 14:757226626acb 348
samux 14:757226626acb 349
samux 14:757226626acb 350 // Interface 1, Alternate Setting 0, Audio Streaming - Zero Bandwith
samux 14:757226626acb 351 INTERFACE_DESCRIPTOR_LENGTH, // bLength
samux 14:757226626acb 352 INTERFACE_DESCRIPTOR, // bDescriptorType
samux 14:757226626acb 353 0x01, // bInterfaceNumber
samux 14:757226626acb 354 0x00, // bAlternateSetting
samux 14:757226626acb 355 0x00, // bNumEndpoints
samux 14:757226626acb 356 AUDIO_CLASS, // bInterfaceClass
samux 14:757226626acb 357 SUBCLASS_AUDIOSTREAMING, // bInterfaceSubClass
samux 14:757226626acb 358 0x00, // bInterfaceProtocol
samux 14:757226626acb 359 0x00, // iInterface
samux 14:757226626acb 360
samux 14:757226626acb 361 // Interface 1, Alternate Setting 1, Audio Streaming - Operational
samux 14:757226626acb 362 INTERFACE_DESCRIPTOR_LENGTH, // bLength
samux 14:757226626acb 363 INTERFACE_DESCRIPTOR, // bDescriptorType
samux 14:757226626acb 364 0x01, // bInterfaceNumber
samux 14:757226626acb 365 0x01, // bAlternateSetting
samux 14:757226626acb 366 0x01, // bNumEndpoints
samux 14:757226626acb 367 AUDIO_CLASS, // bInterfaceClass
samux 14:757226626acb 368 SUBCLASS_AUDIOSTREAMING, // bInterfaceSubClass
samux 14:757226626acb 369 0x00, // bInterfaceProtocol
samux 14:757226626acb 370 0x00, // iInterface
samux 14:757226626acb 371
samux 14:757226626acb 372 // Audio Streaming Interface
samux 14:757226626acb 373 STREAMING_INTERFACE_DESCRIPTOR_LENGTH, // bLength
samux 14:757226626acb 374 INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
samux 14:757226626acb 375 STREAMING_GENERAL, // bDescriptorSubtype
samux 14:757226626acb 376 0x01, // bTerminalLink
samux 14:757226626acb 377 0x00, // bDelay
samux 14:757226626acb 378 LSB(FORMAT_PCM), // wFormatTag
samux 14:757226626acb 379 MSB(FORMAT_PCM), // wFormatTag
samux 14:757226626acb 380
samux 14:757226626acb 381 // Audio Type I Format
samux 14:757226626acb 382 FORMAT_TYPE_I_DESCRIPTOR_LENGTH, // bLength
samux 14:757226626acb 383 INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
samux 14:757226626acb 384 STREAMING_FORMAT_TYPE, // bDescriptorSubtype
samux 14:757226626acb 385 FORMAT_TYPE_I, // bFormatType
samux 14:757226626acb 386 channel_nb, // bNrChannels
samux 14:757226626acb 387 0x02, // bSubFrameSize
samux 14:757226626acb 388 16, // bBitResolution
samux 14:757226626acb 389 0x01, // bSamFreqType
samux 14:757226626acb 390 LSB(FREQ), // tSamFreq
samux 14:757226626acb 391 (FREQ >> 8) & 0xff, // tSamFreq
samux 14:757226626acb 392 (FREQ >> 16) & 0xff, // tSamFreq
samux 14:757226626acb 393
samux 14:757226626acb 394 // Endpoint - Standard Descriptor
samux 14:757226626acb 395 ENDPOINT_DESCRIPTOR_LENGTH + 2, // bLength
samux 14:757226626acb 396 ENDPOINT_DESCRIPTOR, // bDescriptorType
samux 14:757226626acb 397 PHY_TO_DESC(EPISO_OUT), // bEndpointAddress
samux 14:757226626acb 398 E_ISOCHRONOUS, // bmAttributes
samux 14:757226626acb 399 LSB(PACKET_SIZE_ISO), // wMaxPacketSize
samux 14:757226626acb 400 MSB(PACKET_SIZE_ISO), // wMaxPacketSize
samux 14:757226626acb 401 0x01, // bInterval
samux 14:757226626acb 402 0x00, // bRefresh
samux 14:757226626acb 403 0x00, // bSynchAddress
samux 14:757226626acb 404
samux 14:757226626acb 405 // Endpoint - Audio Streaming
samux 14:757226626acb 406 STREAMING_ENDPOINT_DESCRIPTOR_LENGTH, // bLength
samux 14:757226626acb 407 ENDPOINT_DESCRIPTOR_TYPE, // bDescriptorType
samux 14:757226626acb 408 ENDPOINT_GENERAL, // bDescriptor
samux 14:757226626acb 409 0x00, // bmAttributes
samux 14:757226626acb 410 0x00, // bLockDelayUnits
samux 14:757226626acb 411 LSB(0x0000), // wLockDelay
samux 14:757226626acb 412 MSB(0x0000), // wLockDelay
samux 14:757226626acb 413
samux 14:757226626acb 414 // Terminator
samux 14:757226626acb 415 0 // bLength
samux 14:757226626acb 416 };
samux 14:757226626acb 417 return configDescriptor;
samux 14:757226626acb 418 }
samux 14:757226626acb 419
samux 14:757226626acb 420 uint8_t * USBAudio::stringIinterfaceDesc() {
samux 14:757226626acb 421 static uint8_t stringIinterfaceDescriptor[] = {
samux 14:757226626acb 422 0x0c, //bLength
samux 14:757226626acb 423 STRING_DESCRIPTOR, //bDescriptorType 0x03
samux 14:757226626acb 424 'A',0,'u',0,'d',0,'i',0,'o',0 //bString iInterface - Audio
samux 14:757226626acb 425 };
samux 14:757226626acb 426 return stringIinterfaceDescriptor;
samux 14:757226626acb 427 }
samux 14:757226626acb 428
samux 14:757226626acb 429 uint8_t * USBAudio::stringIproductDesc() {
samux 14:757226626acb 430 static uint8_t stringIproductDescriptor[] = {
samux 14:757226626acb 431 0x16, //bLength
samux 14:757226626acb 432 STRING_DESCRIPTOR, //bDescriptorType 0x03
samux 14:757226626acb 433 'M',0,'b',0,'e',0,'d',0,' ',0,'A',0,'u',0,'d',0,'i',0,'o',0 //bString iProduct - Mbed Audio
samux 14:757226626acb 434 };
samux 14:757226626acb 435 return stringIproductDescriptor;
samux 14:757226626acb 436 }