/* 
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * This file is part of the TinyUSB stack.
 */

/** \ingroup group_usbd
 *  @{ */

#ifndef _TUSB_USBD_H_
#define _TUSB_USBD_H_

#ifdef __cplusplus
 extern "C" {
#endif

#include "common/tusb_common.h"
#include "dcd.h"

//--------------------------------------------------------------------+
// Application API
//--------------------------------------------------------------------+

// Task function should be called in main/rtos loop
void tud_task (void);

// Check if device is connected and configured
bool tud_mounted(void);

// Check if device is suspended
bool tud_suspended(void);

// Check if device is ready to transfer
static inline bool tud_ready(void)
{
  return tud_mounted() && !tud_suspended();
}

// Remote wake up host, only if suspended and enabled by host
bool tud_remote_wakeup(void);

//--------------------------------------------------------------------+
// Application Callbacks (WEAK is optional)
//--------------------------------------------------------------------+

// Invoked when received GET DEVICE DESCRIPTOR request
// Application return pointer to descriptor
uint8_t const * tud_descriptor_device_cb(void);

// Invoked when received GET CONFIGURATION DESCRIPTOR request
// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
uint8_t const * tud_descriptor_configuration_cb(uint8_t index);

// Invoked when received GET STRING DESCRIPTOR request
// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
uint16_t const* tud_descriptor_string_cb(uint8_t index);

// Invoked when device is mounted (configured)
TU_ATTR_WEAK void tud_mount_cb(void);

// Invoked when device is unmounted
TU_ATTR_WEAK void tud_umount_cb(void);

// Invoked when usb bus is suspended
// Within 7ms, device must draw an average of current less than 2.5 mA from bus
TU_ATTR_WEAK void tud_suspend_cb(bool remote_wakeup_en);

// Invoked when usb bus is resumed
TU_ATTR_WEAK void tud_resume_cb(void);

//--------------------------------------------------------------------+
// Interface Descriptor Template
//--------------------------------------------------------------------+

#define TUD_CONFIG_DESC_LEN   (9)

// Interface count, string index, total length, attribute, power in mA
#define TUD_CONFIG_DESCRIPTOR(_itfcount, _stridx, _total_len, _attribute, _power_ma) \
  9, TUSB_DESC_CONFIGURATION, U16_TO_U8S_LE(_total_len), _itfcount, 1, _stridx, TU_BIT(7) | _attribute, (_power_ma)/2

//------------- CDC -------------//

// Length of template descriptor: 66 bytes
#define TUD_CDC_DESC_LEN  (8+9+5+5+4+5+7+9+7+7)

// CDC Descriptor Template
// Interface number, string index, EP notification address and size, EP data address (out, in) and size.
#define TUD_CDC_DESCRIPTOR(_itfnum, _stridx, _ep_notif, _ep_notif_size, _epout, _epin, _epsize) \
  /* Interface Associate */\
  8, TUSB_DESC_INTERFACE_ASSOCIATION, _itfnum, 2, TUSB_CLASS_CDC, CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL, CDC_COMM_PROTOCOL_ATCOMMAND, 0,\
  /* CDC Control Interface */\
  9, TUSB_DESC_INTERFACE, _itfnum, 0, 1, TUSB_CLASS_CDC, CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL, CDC_COMM_PROTOCOL_ATCOMMAND, _stridx,\
  /* CDC Header */\
  5, TUSB_DESC_CLASS_SPECIFIC, CDC_FUNC_DESC_HEADER, U16_TO_U8S_LE(0x0120),\
  /* CDC Call */\
  5, TUSB_DESC_CLASS_SPECIFIC, CDC_FUNC_DESC_CALL_MANAGEMENT, 0, (_itfnum) + 1,\
  /* CDC ACM: support line request */\
  4, TUSB_DESC_CLASS_SPECIFIC, CDC_FUNC_DESC_ABSTRACT_CONTROL_MANAGEMENT, 2,\
  /* CDC Union */\
  5, TUSB_DESC_CLASS_SPECIFIC, CDC_FUNC_DESC_UNION, _itfnum, (_itfnum) + 1,\
  /* Endpoint Notification */\
  7, TUSB_DESC_ENDPOINT, _ep_notif, TUSB_XFER_INTERRUPT, U16_TO_U8S_LE(_ep_notif_size), 16,\
  /* CDC Data Interface */\
  9, TUSB_DESC_INTERFACE, (_itfnum)+1, 0, 2, TUSB_CLASS_CDC_DATA, 0, 0, 0,\
  /* Endpoint Out */\
  7, TUSB_DESC_ENDPOINT, _epout, TUSB_XFER_BULK, U16_TO_U8S_LE(_epsize), 0,\
  /* Endpoint In */\
  7, TUSB_DESC_ENDPOINT, _epin, TUSB_XFER_BULK, U16_TO_U8S_LE(_epsize), 0

//------------- MSC -------------//

// Length of template descriptor: 23 bytes
#define TUD_MSC_DESC_LEN    (9 + 7 + 7)

// Interface number, string index, EP Out & EP In address, EP size
#define TUD_MSC_DESCRIPTOR(_itfnum, _stridx, _epout, _epin, _epsize) \
  /* Interface */\
  9, TUSB_DESC_INTERFACE, _itfnum, 0, 2, TUSB_CLASS_MSC, MSC_SUBCLASS_SCSI, MSC_PROTOCOL_BOT, _stridx,\
  /* Endpoint Out */\
  7, TUSB_DESC_ENDPOINT, _epout, TUSB_XFER_BULK, U16_TO_U8S_LE(_epsize), 0,\
  /* Endpoint In */\
  7, TUSB_DESC_ENDPOINT, _epin, TUSB_XFER_BULK, U16_TO_U8S_LE(_epsize), 0

//------------- HID -------------//

// Length of template descriptor: 25 bytes
#define TUD_HID_DESC_LEN    (9 + 9 + 7)

// HID Input only descriptor
// Interface number, string index, protocol, report descriptor len, EP In address, size & polling interval
#define TUD_HID_DESCRIPTOR(_itfnum, _stridx, _boot_protocol, _report_desc_len, _epin, _epsize, _ep_interval) \
  /* Interface */\
  9, TUSB_DESC_INTERFACE, _itfnum, 0, 1, TUSB_CLASS_HID, (_boot_protocol) ? HID_SUBCLASS_BOOT : 0, _boot_protocol, _stridx,\
  /* HID descriptor */\
  9, HID_DESC_TYPE_HID, U16_TO_U8S_LE(0x0111), 0, 1, HID_DESC_TYPE_REPORT, U16_TO_U8S_LE(_report_desc_len),\
  /* Endpoint In */\
  7, TUSB_DESC_ENDPOINT, _epin, TUSB_XFER_INTERRUPT, U16_TO_U8S_LE(_epsize), _ep_interval

// Length of template descriptor: 32 bytes
#define TUD_HID_INOUT_DESC_LEN    (9 + 9 + 7 + 7)

// HID Input & Output descriptor
// Interface number, string index, protocol, report descriptor len, EP In & Out address, size & polling interval
#define TUD_HID_INOUT_DESCRIPTOR(_itfnum, _stridx, _boot_protocol, _report_desc_len, _epin, _epout, _epsize, _ep_interval) \
  /* Interface */\
  9, TUSB_DESC_INTERFACE, _itfnum, 0, 2, TUSB_CLASS_HID, (_boot_protocol) ? HID_SUBCLASS_BOOT : 0, _boot_protocol, _stridx,\
  /* HID descriptor */\
  9, HID_DESC_TYPE_HID, U16_TO_U8S_LE(0x0111), 0, 1, HID_DESC_TYPE_REPORT, U16_TO_U8S_LE(_report_desc_len),\
  /* Endpoint In */\
  7, TUSB_DESC_ENDPOINT, _epin, TUSB_XFER_INTERRUPT, U16_TO_U8S_LE(_epsize), _ep_interval,\
  /* Endpoint Out */\
  7, TUSB_DESC_ENDPOINT, _epout, TUSB_XFER_INTERRUPT, U16_TO_U8S_LE(_epsize), _ep_interval

#ifdef __cplusplus
 }
#endif

#endif /* _TUSB_USBD_H_ */

/** @} */
