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/*
* Copyright (c) 2026, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbd_core.h"
#define WCID_VENDOR_CODE 0x17
#define USBD_VID 0xffff
#define USBD_PID 0xffff
#define USBD_MAX_POWER 100
#define USBD_LANGID_STRING 1033
#define WINUSB_IN_EP 0x81
#define WINUSB_OUT_EP 0x02
#define USBD_PID_WINUSB10 USBD_PID
#define USB_CONFIG_SIZE (9 + 9 + 7 + 7)
#define INTF_NUM 1
static const uint8_t WCID_StringDescriptor_MSOS[18] = {
USB_MSOSV1_STRING_DESCRIPTOR_INIT(WCID_VENDOR_CODE)
};
static const uint8_t WINUSB_WCIDDescriptor[] = {
USB_MSOSV1_COMP_ID_HEADER_DESCRIPTOR_INIT(INTF_NUM),
USB_MSOSV1_COMP_ID_FUNCTION_WINUSB_DESCRIPTOR_INIT(0),
};
static const uint8_t WINUSB_IF0_WCIDProperties[142] = {
/*
* WCID property descriptor
*/
0x8e, 0x00, 0x00, 0x00, /* dwLength */
0x00, 0x01, /* bcdVersion */
0x05, 0x00, /* wIndex */
0x01, 0x00, /* wCount */
/*
* registry propter descriptor
*/
0x84, 0x00, 0x00, 0x00, /* dwSize */
0x01, 0x00, 0x00, 0x00, /* dwPropertyDataType */
0x28, 0x00, /* wPropertyNameLength */
/* DeviceInterfaceGUID */
'D', 0x00, 'e', 0x00, 'v', 0x00, 'i', 0x00, /* wcName_20 */
'c', 0x00, 'e', 0x00, 'I', 0x00, 'n', 0x00, /* wcName_20 */
't', 0x00, 'e', 0x00, 'r', 0x00, 'f', 0x00, /* wcName_20 */
'a', 0x00, 'c', 0x00, 'e', 0x00, 'G', 0x00, /* wcName_20 */
'U', 0x00, 'I', 0x00, 'D', 0x00, 0x00, 0x00, /* wcName_20 */
0x4e, 0x00, 0x00, 0x00, /* dwPropertyDataLength */
/* {1D4B2365-4749-48EA-B38A-7C6FDDDD7E26} */
'{', 0x00, '1', 0x00, 'D', 0x00, '4', 0x00, /* wcData_39 */
'B', 0x00, '2', 0x00, '3', 0x00, '6', 0x00, /* wcData_39 */
'5', 0x00, '-', 0x00, '4', 0x00, '7', 0x00, /* wcData_39 */
'4', 0x00, '9', 0x00, '-', 0x00, '4', 0x00, /* wcData_39 */
'8', 0x00, 'E', 0x00, 'A', 0x00, '-', 0x00, /* wcData_39 */
'B', 0x00, '3', 0x00, '8', 0x00, 'A', 0x00, /* wcData_39 */
'-', 0x00, '7', 0x00, 'C', 0x00, '6', 0x00, /* wcData_39 */
'F', 0x00, 'D', 0x00, 'D', 0x00, 'D', 0x00, /* wcData_39 */
'D', 0x00, '7', 0x00, 'E', 0x00, '2', 0x00, /* wcData_39 */
'6', 0x00, '}', 0x00, 0x00, 0x00, /* wcData_39 */
};
const uint8_t *WINUSB_IFx_WCIDProperties[] = {
WINUSB_IF0_WCIDProperties,
};
struct usb_msosv1_descriptor msosv1_desc = {
.string = WCID_StringDescriptor_MSOS,
.vendor_code = WCID_VENDOR_CODE,
.compat_id = WINUSB_WCIDDescriptor,
.comp_id_property = WINUSB_IFx_WCIDProperties,
};
static const uint8_t device_descriptor[] = {
USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID_WINUSB10, 0x0001, 0x01),
};
static const uint8_t config_descriptor_hs[] = {
USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, INTF_NUM, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xff, 0xff, 0x00, 0x04),
USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_IN_EP, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_HS, 0x00),
USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_OUT_EP, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_HS, 0x00),
};
static const uint8_t config_descriptor_fs[] = {
USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, INTF_NUM, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xff, 0xff, 0x00, 0x04),
USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_IN_EP, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_FS, 0x00),
USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_OUT_EP, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_FS, 0x00),
};
static const uint8_t device_quality_descriptor[] = {
USB_DEVICE_QUALIFIER_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, 0x01),
};
static const uint8_t other_speed_config_descriptor_hs[] = {
USB_OTHER_SPEED_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, INTF_NUM, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xff, 0xff, 0x00, 0x04),
USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_IN_EP, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_FS, 0x00),
USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_OUT_EP, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_FS, 0x00),
};
static const uint8_t other_speed_config_descriptor_fs[] = {
USB_OTHER_SPEED_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, INTF_NUM, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xff, 0xff, 0x00, 0x04),
USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_IN_EP, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_HS, 0x00),
USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_OUT_EP, USB_ENDPOINT_TYPE_BULK, USB_BULK_EP_MPS_HS, 0x00),
};
static const char *string_descriptors[] = {
(const char[]){ 0x09, 0x04 }, /* Langid */
"CherryUSB", /* Manufacturer */
"CherryUSB WinUSB Demo", /* Product */
"2024051701", /* Serial Number */
"CherryUSB WinUSB0",
};
static const uint8_t *device_descriptor_callback(uint8_t speed)
{
(void)speed;
return device_descriptor;
}
static const uint8_t *config_descriptor_callback(uint8_t speed)
{
if (speed == USB_SPEED_HIGH) {
return config_descriptor_hs;
} else if (speed == USB_SPEED_FULL) {
return config_descriptor_fs;
} else {
return NULL;
}
}
static const uint8_t *device_quality_descriptor_callback(uint8_t speed)
{
(void)speed;
return device_quality_descriptor;
}
static const uint8_t *other_speed_config_descriptor_callback(uint8_t speed)
{
if (speed == USB_SPEED_HIGH) {
return other_speed_config_descriptor_hs;
} else if (speed == USB_SPEED_FULL) {
return other_speed_config_descriptor_fs;
} else {
return NULL;
}
}
static const char *string_descriptor_callback(uint8_t speed, uint8_t index)
{
(void)speed;
if (index >= (sizeof(string_descriptors) / sizeof(char *))) {
return NULL;
}
return string_descriptors[index];
}
const struct usb_descriptor winusb_descriptor = {
.device_descriptor_callback = device_descriptor_callback,
.config_descriptor_callback = config_descriptor_callback,
.device_quality_descriptor_callback = device_quality_descriptor_callback,
.other_speed_descriptor_callback = other_speed_config_descriptor_callback,
.string_descriptor_callback = string_descriptor_callback,
.msosv1_descriptor = &msosv1_desc,
};
USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[16384];
USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[16384];
static void usbd_event_handler(uint8_t busid, uint8_t event)
{
switch (event) {
case USBD_EVENT_RESET:
break;
case USBD_EVENT_CONNECTED:
break;
case USBD_EVENT_DISCONNECTED:
break;
case USBD_EVENT_RESUME:
break;
case USBD_EVENT_SUSPEND:
break;
case USBD_EVENT_CONFIGURED:
/* setup first out ep read transfer */
usbd_ep_start_read(busid, WINUSB_OUT_EP, read_buffer, sizeof(read_buffer));
usbd_ep_start_write(busid, WINUSB_IN_EP, write_buffer, sizeof(write_buffer));
break;
case USBD_EVENT_SET_REMOTE_WAKEUP:
break;
case USBD_EVENT_CLR_REMOTE_WAKEUP:
break;
default:
break;
}
}
void usbd_winusb_out(uint8_t busid, uint8_t ep, uint32_t nbytes)
{
usbd_ep_start_read(busid, WINUSB_OUT_EP, read_buffer, sizeof(read_buffer));
}
void usbd_winusb_in(uint8_t busid, uint8_t ep, uint32_t nbytes)
{
usbd_ep_start_write(busid, WINUSB_IN_EP, write_buffer, sizeof(write_buffer));
}
struct usbd_endpoint winusb_out_ep1 = {
.ep_addr = WINUSB_OUT_EP,
.ep_cb = usbd_winusb_out
};
struct usbd_endpoint winusb_in_ep1 = {
.ep_addr = WINUSB_IN_EP,
.ep_cb = usbd_winusb_in
};
struct usbd_interface intf0;
void winusb_init(uint8_t busid, uint32_t reg_base)
{
usbd_desc_register(busid, &winusb_descriptor);
usbd_add_interface(busid, &intf0);
usbd_add_endpoint(busid, &winusb_out_ep1);
usbd_add_endpoint(busid, &winusb_in_ep1);
usbd_initialize(busid, reg_base, usbd_event_handler);
}
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