text: /*
      ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
  	LED-Cube Firmware - Copyright (C) 2014 Nick Schrader
  
      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"
  
  /*
   * Endpoints to be used for USBD1.
   */
  #define USBD1_DATA_REQUEST_EP           1
  #define USBD1_DATA_AVAILABLE_EP         1
  #define USBD1_INTERRUPT_REQUEST_EP      2
  
  /*
   * DP resistor control is not possible on the STM32F3-Discovery, using stubs
   * for the connection macros.
   */
  #define usb_lld_connect_bus(usbp)
  #define usb_lld_disconnect_bus(usbp)
  
  /*
   * Serial over USB Driver structure.
   */
  static SerialUSBDriver SDU1;
  
  /*
   * USB Device Descriptor.
   */
  static const 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.              */
  };
  
  /*
   * Device Descriptor wrapper.
   */
  static const USBDescriptor vcom_device_descriptor = {
    sizeof vcom_device_descriptor_data,
    vcom_device_descriptor_data
  };
  
  /* Configuration Descriptor tree for a CDC.*/
  static const 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     (USBD1_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     (USBD1_DATA_AVAILABLE_EP,       /* bEndpointAddress.*/
                           0x02,          /* bmAttributes (Bulk).             */
                           0x0040,        /* wMaxPacketSize.                  */
                           0x00),         /* bInterval.                       */
    /* Endpoint 1 Descriptor.*/
    USB_DESC_ENDPOINT     (USBD1_DATA_REQUEST_EP|0x80,    /* bEndpointAddress.*/
                           0x02,          /* bmAttributes (Bulk).             */
                           0x0040,        /* wMaxPacketSize.                  */
                           0x00)          /* bInterval.                       */
  };
  
  /*
   * Configuration Descriptor wrapper.
   */
  static const USBDescriptor vcom_configuration_descriptor = {
    sizeof vcom_configuration_descriptor_data,
    vcom_configuration_descriptor_data
  };
  
  /*
   * U.S. English language identifier.
   */
  static const uint8_t vcom_string0[] = {
    USB_DESC_BYTE(4),                     /* bLength.                         */
    USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType.                 */
    USB_DESC_WORD(0x0407)                 /* wLANGID (German).          		*/
  };
  
  /*
   * Vendor string.
   */
  static const 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 const uint8_t vcom_string2[] = {
    USB_DESC_BYTE(30),                    /* bLength.                         */
    USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType.                 */
    '2', 0, 'x', 0, '2', 0, 'x', 0, '2', 0, ' ', 0, 'L', 0, 'E', 0,
    'D', 0, '-', 0, 'C', 0, 'u', 0, 'b', 0, 'e', 0
  };
  
  /*
   * Serial Number string.
   */
  static const uint8_t vcom_string3[] = {
    USB_DESC_BYTE(16),                    /* bLength.                         */
    USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType.                 */
    '1', 0, 's', 0, 't', 0, ' ', 0, 'T', 0, 'r', 0, 'y', 0
  };
  
  /*
   * Strings wrappers array.
   */
  static const USBDescriptor vcom_strings[] = {
    {sizeof vcom_string0, vcom_string0},
    {sizeof vcom_string1, vcom_string1},
    {sizeof vcom_string2, vcom_string2},
    {sizeof vcom_string3, vcom_string3}
  };
  
  