text: /**
   * @file main.c
   * @brief
   *
   * Copyright (c) 2021 Bouffalolab team
   *
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.  The
   * ASF licenses this file to you 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 "hal_usb.h"
  #include "usbd_core.h"
  #include "usbd_cdc.h"
  
  #define CDC_IN_EP  0x82
  #define CDC_OUT_EP 0x01
  #define CDC_INT_EP 0x83
  
  #define USBD_VID           0xFFFF
  #define USBD_PID           0xFFFF
  #define USBD_MAX_POWER     100
  #define USBD_LANGID_STRING 1033
  
  #define USB_CONFIG_SIZE (9 + CDC_ACM_DESCRIPTOR_LEN)
  
  USB_DESC_SECTION const uint8_t cdc_descriptor[] = {
      USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x02, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
      USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
      CDC_ACM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, 0x02),
      ///////////////////////////////////////
      /// string0 descriptor
      ///////////////////////////////////////
      USB_LANGID_INIT(USBD_LANGID_STRING),
      ///////////////////////////////////////
      /// string1 descriptor
      ///////////////////////////////////////
      0x12,                       /* bLength */
      USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
      'B', 0x00,                  /* wcChar0 */
      'o', 0x00,                  /* wcChar1 */
      'u', 0x00,                  /* wcChar2 */
      'f', 0x00,                  /* wcChar3 */
      'f', 0x00,                  /* wcChar4 */
      'a', 0x00,                  /* wcChar5 */
      'l', 0x00,                  /* wcChar6 */
      'o', 0x00,                  /* wcChar7 */
      ///////////////////////////////////////
      /// string2 descriptor
      ///////////////////////////////////////
      0x24,                       /* bLength */
      USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
      'B', 0x00,                  /* wcChar0 */
      'o', 0x00,                  /* wcChar1 */
      'u', 0x00,                  /* wcChar2 */
      'f', 0x00,                  /* wcChar3 */
      'f', 0x00,                  /* wcChar4 */
      'a', 0x00,                  /* wcChar5 */
      'l', 0x00,                  /* wcChar6 */
      'o', 0x00,                  /* wcChar7 */
      ' ', 0x00,                  /* wcChar8 */
      'C', 0x00,                  /* wcChar9 */
      'D', 0x00,                  /* wcChar10 */
      'C', 0x00,                  /* wcChar11 */
      ' ', 0x00,                  /* wcChar13 */
      'D', 0x00,                  /* wcChar14 */
      'E', 0x00,                  /* wcChar15 */
      'M', 0x00,                  /* wcChar16 */
      'O', 0x00,                  /* wcChar17 */
      ///////////////////////////////////////
      /// string3 descriptor
      ///////////////////////////////////////
      0x16,                       /* bLength */
      USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
      '2', 0x00,                  /* wcChar0 */
      '0', 0x00,                  /* wcChar1 */
      '2', 0x00,                  /* wcChar2 */
      '1', 0x00,                  /* wcChar3 */
      '0', 0x00,                  /* wcChar4 */
      '3', 0x00,                  /* wcChar5 */
      '1', 0x00,                  /* wcChar6 */
      '0', 0x00,                  /* wcChar7 */
      '0', 0x00,                  /* wcChar8 */
      '0', 0x00,                  /* wcChar9 */
      ///////////////////////////////////////
      /// device qualifier descriptor
      ///////////////////////////////////////
      0x0a,
      USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
      0x00,
      0x02,
      0x02,
      0x02,
      0x01,
      0x40,
      0x01,
      0x00,
  
      0x00
  };
  
  void usbd_cdc_acm_bulk_out(uint8_t ep)
  {
      uint32_t actual_read_length = 0;
      uint8_t out_buffer[64];
  
      if (usbd_ep_read(ep, out_buffer, 64, &actual_read_length) < 0) {
          USBD_LOG_DBG("Read DATA Packet failed\r\n");
          usbd_ep_set_stall(ep);
          return;
      }
  
      usbd_ep_read(ep, NULL, 0, NULL);
  
      usbd_ep_write(CDC_IN_EP, out_buffer, actual_read_length, NULL);
  }
  
  void usbd_cdc_acm_bulk_in(uint8_t ep)
  {
  }
  
  usbd_class_t cdc_class;
  usbd_interface_t cdc_cmd_intf;
  usbd_interface_t cdc_data_intf;
  
  usbd_endpoint_t cdc_out_ep = {
      .ep_addr = CDC_OUT_EP,
      .ep_cb = usbd_cdc_acm_bulk_out
  };
  
  usbd_endpoint_t cdc_in_ep = {
      .ep_addr = CDC_IN_EP,
      .ep_cb = NULL
  };
  
  struct device *usb_fs;
  
  extern struct device *usb_dc_init(void);
  int main(void)
  {
      bflb_platform_init(0);
  
      usbd_desc_register(cdc_descriptor);
  
      usbd_cdc_add_acm_interface(&cdc_class, &cdc_cmd_intf);
      usbd_cdc_add_acm_interface(&cdc_class, &cdc_data_intf);
      usbd_interface_add_endpoint(&cdc_data_intf, &cdc_out_ep);
      usbd_interface_add_endpoint(&cdc_data_intf, &cdc_in_ep);
  
      usb_fs = usb_dc_init();
  
      if (usb_fs) {
          device_control(usb_fs, DEVICE_CTRL_SET_INT, (void *)(USB_EP1_DATA_OUT_IT));
      }
  
      while (!usb_device_is_configured()) {
      }
  
      while (1) {
      }
  }
  