/* Copyright (C) 2015 Robert Lippert Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ #include "ch.h" #include "hal.h" #include "usbcfg.h" /* Endpoints to be used. */ #define USBD_DATA_REQUEST_EP 1 #define USBD_DATA_AVAILABLE_EP 3 #define USBD_INTERRUPT_REQUEST_EP 2 #if (AVR_USB_USE_NAMED_ADDRESS_SPACES == TRUE) && defined(__FLASH) # undef ROMCONST # define ROMCONST const __flash #endif /* Virtual serial port over USB.*/ SerialUSBDriver SDU1; /* * USB Device Descriptor. */ static ROMCONST uint8_t vcom_device_descriptor_data[18] = { USB_DESC_DEVICE (0x0110, /* bcdUSB (1.1). */ 0x02, /* bDeviceClass (CDC). */ 0x00, /* bDeviceSubClass. */ 0x00, /* bDeviceProtocol. */ 0x40, /* bMaxPacketSize. */ 0x0483, /* idVendor (ST). */ 0x5740, /* idProduct. */ 0x0200, /* bcdDevice. */ 1, /* iManufacturer. */ 2, /* iProduct. */ 3, /* iSerialNumber. */ 1) /* bNumConfigurations. */ }; /* Configuration Descriptor tree for a CDC.*/ static ROMCONST uint8_t vcom_configuration_descriptor_data[67] = { /* Configuration Descriptor.*/ USB_DESC_CONFIGURATION(67, /* wTotalLength. */ 0x02, /* bNumInterfaces. */ 0x01, /* bConfigurationValue. */ 0, /* iConfiguration. */ 0xC0, /* bmAttributes (self powered). */ 50), /* bMaxPower (100mA). */ /* Interface Descriptor.*/ USB_DESC_INTERFACE (0x00, /* bInterfaceNumber. */ 0x00, /* bAlternateSetting. */ 0x01, /* bNumEndpoints. */ 0x02, /* bInterfaceClass (Communications Interface Class, CDC section 4.2). */ 0x02, /* bInterfaceSubClass (Abstract Control Model, CDC section 4.3). */ 0x01, /* bInterfaceProtocol (AT commands, CDC section 4.4). */ 0), /* iInterface. */ /* Header Functional Descriptor (CDC section 5.2.3).*/ USB_DESC_BYTE (5), /* bLength. */ USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */ USB_DESC_BYTE (0x00), /* bDescriptorSubtype (Header Functional Descriptor. */ USB_DESC_BCD (0x0110), /* bcdCDC. */ /* Call Management Functional Descriptor. */ USB_DESC_BYTE (5), /* bFunctionLength. */ USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */ USB_DESC_BYTE (0x01), /* bDescriptorSubtype (Call Management Functional Descriptor). */ USB_DESC_BYTE (0x00), /* bmCapabilities (D0+D1). */ USB_DESC_BYTE (0x01), /* bDataInterface. */ /* ACM Functional Descriptor.*/ USB_DESC_BYTE (4), /* bFunctionLength. */ USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */ USB_DESC_BYTE (0x02), /* bDescriptorSubtype (Abstract Control Management Descriptor). */ USB_DESC_BYTE (0x02), /* bmCapabilities. */ /* Union Functional Descriptor.*/ USB_DESC_BYTE (5), /* bFunctionLength. */ USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */ USB_DESC_BYTE (0x06), /* bDescriptorSubtype (Union Functional Descriptor). */ USB_DESC_BYTE (0x00), /* bMasterInterface (Communication Class Interface). */ USB_DESC_BYTE (0x01), /* bSlaveInterface0 (Data Class Interface). */ /* Endpoint 2 Descriptor.*/ USB_DESC_ENDPOINT (USBD_INTERRUPT_REQUEST_EP|0x80, 0x03, /* bmAttributes (Interrupt). */ 0x0008, /* wMaxPacketSize. */ 0xFF), /* bInterval. */ /* Interface Descriptor.*/ USB_DESC_INTERFACE (0x01, /* bInterfaceNumber. */ 0x00, /* bAlternateSetting. */ 0x02, /* bNumEndpoints. */ 0x0A, /* bInterfaceClass (Data Class Interface, CDC section 4.5). */ 0x00, /* bInterfaceSubClass (CDC section 4.6). */ 0x00, /* bInterfaceProtocol (CDC section 4.7). */ 0x00), /* iInterface. */ /* Endpoint 3 Descriptor.*/ USB_DESC_ENDPOINT (USBD_DATA_AVAILABLE_EP, /* bEndpointAddress.*/ 0x02, /* bmAttributes (Bulk). */ 0x0040, /* wMaxPacketSize. */ 0x00), /* bInterval. */ /* Endpoint 1 Descriptor.*/ USB_DESC_ENDPOINT (USBD_DATA_REQUEST_EP|0x80, /* bEndpointAddress.*/ 0x02, /* bmAttributes (Bulk). */ 0x0040, /* wMaxPacketSize. */ 0x00) /* bInterval. */ }; /* * U.S. English language identifier. */ static ROMCONST uint8_t vcom_string0[] = { USB_DESC_BYTE(4), /* bLength. */ USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */ USB_DESC_WORD(0x0409) /* wLANGID (U.S. English). */ }; /* * Vendor string. */ static ROMCONST uint8_t vcom_string1[] = { USB_DESC_BYTE(38), /* bLength. */ USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */ 'S', 0, 'T', 0, 'M', 0, 'i', 0, 'c', 0, 'r', 0, 'o', 0, 'e', 0, 'l', 0, 'e', 0, 'c', 0, 't', 0, 'r', 0, 'o', 0, 'n', 0, 'i', 0, 'c', 0, 's', 0 }; /* * Device Description string. */ static ROMCONST uint8_t vcom_string2[] = { USB_DESC_BYTE(56), /* bLength. */ USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */ 'C', 0, 'h', 0, 'i', 0, 'b', 0, 'i', 0, 'O', 0, 'S', 0, '/', 0, 'R', 0, 'T', 0, ' ', 0, 'V', 0, 'i', 0, 'r', 0, 't', 0, 'u', 0, 'a', 0, 'l', 0, ' ', 0, 'C', 0, 'O', 0, 'M', 0, ' ', 0, 'P', 0, 'o', 0, 'r', 0, 't', 0 }; /* * Serial Number string. */ static ROMCONST uint8_t vcom_string3[] = { USB_DESC_BYTE(8), /* bLength. */ USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */ '0' + CH_KERNEL_MAJOR, 0, '0' + CH_KERNEL_MINOR, 0, '0' + CH_KERNEL_PATCH, 0 }; /* * Handles the GET_DESCRIPTOR callback. */ static const USBDescriptor *get_descriptor(USBDriver *usbp, uint8_t dtype, uint8_t dindex, uint16_t lang) { (void)usbp; (void)lang; (void)dtype; (void)dindex; return NULL; } /** * @brief IN EP1 state. */ static USBInEndpointState ep1instate; /** * @brief EP1 initialization structure */ static const USBEndpointConfig ep1config = { USB_EP_MODE_TYPE_BULK, NULL, sduDataTransmitted, NULL, 0x0040, 0, &ep1instate, NULL, }; /** * @brief INTR EP3 state. */ static USBInEndpointState ep3instate; /** * @brief EP3 initialization structure (IN only). */ static const USBEndpointConfig ep3config = { USB_EP_MODE_TYPE_INTR, NULL, sduInterruptTransmitted, NULL, 0x0010, 0x0000, &ep3instate, NULL, }; /** * @brief OUT EP3 state. */ static USBOutEndpointState ep3state; /** * @brief EP2 initialization structure */ static const USBEndpointConfig ep2config = { USB_EP_MODE_TYPE_BULK, NULL, NULL, sduDataReceived, 0, 0x0040, NULL, &ep3state, }; /* * Handles the USB driver global events. */ static void usb_event(USBDriver *usbp, usbevent_t event) { extern SerialUSBDriver SDU1; switch (event) { case USB_EVENT_ADDRESS: return; case USB_EVENT_CONFIGURED: chSysLockFromISR(); /* Enables the endpoints specified into the configuration. Note, this callback is invoked from an ISR so I-Class functions must be used.*/ usbInitEndpointI(usbp, USBD_DATA_REQUEST_EP, &ep1config); usbInitEndpointI(usbp, USBD_DATA_AVAILABLE_EP, &ep2config); usbInitEndpointI(usbp, USBD_INTERRUPT_REQUEST_EP, &ep3config); /* Resetting the state of the CDC subsystem.*/ sduConfigureHookI(&SDU1); chSysUnlockFromISR(); return; case USB_EVENT_RESET: /* Falls into.*/ case USB_EVENT_UNCONFIGURED: /* Falls into.*/ case USB_EVENT_SUSPEND: chSysLockFromISR(); /* Disconnection event on suspend.*/ sduSuspendHookI(&SDU1); chSysUnlockFromISR(); return; case USB_EVENT_WAKEUP: chSysLockFromISR(); /* Disconnection event on suspend.*/ sduWakeupHookI(&SDU1); chSysUnlockFromISR(); return; case USB_EVENT_STALLED: return; } return; } bool usb_setup_hook(USBDriver *usbp) { /* Override GET_DESCRIPTOR requests to return data from program memory */ if ((usbp->setup[0] & (USB_RTYPE_RECIPIENT_MASK | USB_RTYPE_TYPE_MASK)) == (USB_RTYPE_RECIPIENT_DEVICE | USB_RTYPE_TYPE_STD) && usbp->setup[1] == USB_REQ_GET_DESCRIPTOR) { const uint8_t dtype = usbp->setup[3]; const uint8_t dindex = usbp->setup[2]; const AVR_USB_TX_BUF_ADDRESS_SPACE uint8_t *ddata = NULL; size_t dsize = 0; switch (dtype) { case USB_DESCRIPTOR_DEVICE: dsize = sizeof(vcom_device_descriptor_data); ddata = vcom_device_descriptor_data; break; case USB_DESCRIPTOR_CONFIGURATION: dsize = sizeof(vcom_configuration_descriptor_data); ddata = vcom_configuration_descriptor_data; break; case USB_DESCRIPTOR_STRING: if (dindex == 0) { dsize = sizeof(vcom_string0); ddata = vcom_string0; } else if (dindex == 1) { dsize = sizeof(vcom_string1); ddata = vcom_string1; } else if (dindex == 2) { dsize = sizeof(vcom_string2); ddata = vcom_string2; } else if (dindex == 3) { dsize = sizeof(vcom_string3); ddata = vcom_string3; } break; } if (ddata == NULL) { return false; } usbSetupTransfer(usbp, ddata, dsize, NULL); return true; } return sduRequestsHook(usbp); } /* * Handles the USB driver start of frame event. */ static void sof_handler(USBDriver *usbp) { (void)usbp; osalSysLockFromISR(); sduSOFHookI(&SDU1); osalSysUnlockFromISR(); } /* * USB driver configuration. */ const USBConfig usbcfg = { usb_event, get_descriptor, usb_setup_hook, sof_handler }; /* * Serial over USB driver configuration. */ const SerialUSBConfig serusbcfg = { &USBD1, USBD_DATA_REQUEST_EP, USBD_DATA_AVAILABLE_EP, USBD_INTERRUPT_REQUEST_EP }; ref='#n309'>309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526