1 /*
2  * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
3  *
4  * SPDX-License-Identifier: Apache-2.0
5  */
6 
7 /*
8 Note: This header file contains USB2.0 related types and macros that can be used by code specific to the DWC_OTG
9 controller (i.e., the HW specific layers of the USB host stack). Thus, this header is only meant to be used below (and
10 including) the HAL layer. For types and macros that are HW implementation agnostic (i.e., HCD layer and above), add them
11 to the "usb/usb_types_ch9.h" header instead.
12 */
13 
14 #pragma once
15 
16 #ifdef __cplusplus
17 extern "C"
18 {
19 #endif
20 
21 /**
22  * @brief USB speeds supported by the DWC OTG controller
23  *
24  * @note usb_dwc_speed_t enum values must match the values of the DWC_OTG prtspd register field
25  */
26 typedef enum {
27     USB_DWC_SPEED_HIGH = 0,
28     USB_DWC_SPEED_FULL = 1,
29     USB_DWC_SPEED_LOW = 2,
30 } usb_dwc_speed_t;
31 
32 /**
33  * @brief USB transfer types supported by the DWC OTG controller
34  *
35  * @note usb_dwc_xfer_type_t enum values must match the values of the DWC_OTG hcchar register field
36  */
37 typedef enum {
38     USB_DWC_XFER_TYPE_CTRL = 0,
39     USB_DWC_XFER_TYPE_ISOCHRONOUS = 1,
40     USB_DWC_XFER_TYPE_BULK = 2,
41     USB_DWC_XFER_TYPE_INTR = 3,
42 } usb_dwc_xfer_type_t;
43 
44 /**
45  * @brief Enumeration of different possible lengths of the periodic frame list
46  */
47 typedef enum {
48     USB_HAL_FRAME_LIST_LEN_8 = 8,
49     USB_HAL_FRAME_LIST_LEN_16 = 16,
50     USB_HAL_FRAME_LIST_LEN_32 = 32,
51     USB_HAL_FRAME_LIST_LEN_64 = 64,
52 } usb_hal_frame_list_len_t;
53 
54 #ifdef __cplusplus
55 }
56 #endif
57