/*
* Copyright (c) 2024, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbd_core.h"
#include "usbd_hid.h"
#define USBD_VID 0xffff
#define USBD_PID 0xffff
#define USBD_MAX_POWER 100
#define USBD_LANGID_STRING 1033
#define HID_INT_EP 0x81
#define HID_INT_EP_SIZE 8
#define HID_INT_EP_INTERVAL 10
#define USB_HID_CONFIG_DESC_SIZ 34
#define HID_KEYBOARD_REPORT_DESC_SIZE 63
static const uint8_t hid_descriptor[] = {
USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01),
USB_CONFIG_DESCRIPTOR_INIT(USB_HID_CONFIG_DESC_SIZ, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
/************** Descriptor of Joystick Mouse interface ****************/
/* 09 */
0x09, /* bLength: Interface Descriptor size */
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType: Interface descriptor type */
0x00, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x01, /* bNumEndpoints */
0x03, /* bInterfaceClass: HID */
0x01, /* bInterfaceSubClass : 1=BOOT, 0=no boot */
0x01, /* nInterfaceProtocol : 0=none, 1=keyboard, 2=mouse */
0, /* iInterface: Index of string descriptor */
/******************** Descriptor of Joystick Mouse HID ********************/
/* 18 */
0x09, /* bLength: HID Descriptor size */
HID_DESCRIPTOR_TYPE_HID, /* bDescriptorType: HID */
0x11, /* bcdHID: HID Class Spec release number */
0x01,
0x00, /* bCountryCode: Hardware target country */
0x01, /* bNumDescriptors: Number of HID class descriptors to follow */
0x22, /* bDescriptorType */
HID_KEYBOARD_REPORT_DESC_SIZE, /* wItemLength: Total length of Report descriptor */
0x00,
/******************** Descriptor of Mouse endpoint ********************/
/* 27 */
0x07, /* bLength: Endpoint Descriptor size */
USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType: */
HID_INT_EP, /* bEndpointAddress: Endpoint Address (IN) */
0x03, /* bmAttributes: Interrupt endpoint */
HID_INT_EP_SIZE, /* wMaxPacketSize: 4 Byte max */
0x00,
HID_INT_EP_INTERVAL, /* bInterval: Polling Interval */
/* 34 */
///////////////////////////////////////
/// string0 descriptor
///////////////////////////////////////
USB_LANGID_INIT(USBD_LANGID_STRING),
///////////////////////////////////////
/// string1 descriptor
///////////////////////////////////////
0x14, /* bLength */
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
'C', 0x00, /* wcChar0 */
'h', 0x00, /* wcChar1 */
'e', 0x00, /* wcChar2 */
'r', 0x00, /* wcChar3 */
'r', 0x00, /* wcChar4 */
'y', 0x00, /* wcChar5 */
'U', 0x00, /* wcChar6 */
'S', 0x00, /* wcChar7 */
'B', 0x00, /* wcChar8 */
///////////////////////////////////////
/// string2 descriptor
///////////////////////////////////////
0x26, /* bLength */
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
'C', 0x00, /* wcChar0 */
'h', 0x00, /* wcChar1 */
'e', 0x00, /* wcChar2 */
'r', 0x00, /* wcChar3 */
'r', 0x00, /* wcChar4 */
'y', 0x00, /* wcChar5 */
'U', 0x00, /* wcChar6 */
'S', 0x00, /* wcChar7 */
'B', 0x00, /* wcChar8 */
' ', 0x00, /* wcChar9 */
'H', 0x00, /* wcChar10 */
'I', 0x00, /* wcChar11 */
'D', 0x00, /* wcChar12 */
' ', 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 */
'2', 0x00, /* wcChar3 */
'1', 0x00, /* wcChar4 */
'2', 0x00, /* wcChar5 */
'3', 0x00, /* wcChar6 */
'4', 0x00, /* wcChar7 */
'5', 0x00, /* wcChar8 */
'6', 0x00, /* wcChar9 */
#ifdef CONFIG_USB_HS
///////////////////////////////////////
/// device qualifier descriptor
///////////////////////////////////////
0x0a,
USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
0x00,
0x02,
0x00,
0x00,
0x00,
0x40,
0x01,
0x00,
#endif
0x00
};
/* USB HID device Configuration Descriptor */
static uint8_t hid_desc[9] __ALIGN_END = {
/* 18 */
0x09, /* bLength: HID Descriptor size */
HID_DESCRIPTOR_TYPE_HID, /* bDescriptorType: HID */
0x11, /* bcdHID: HID Class Spec release number */
0x01,
0x00, /* bCountryCode: Hardware target country */
0x01, /* bNumDescriptors: Number of HID class descriptors to follow */
0x22, /* bDescriptorType */
HID_KEYBOARD_REPORT_DESC_SIZE, /* wItemLength: Total length of Report descriptor */
0x00,
};
static const uint8_t hid_keyboard_report_desc[HID_KEYBOARD_REPORT_DESC_SIZE] = {
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x06, // USAGE (Keyboard)
0xa1, 0x01, // COLLECTION (Application)
0x05, 0x07, // USAGE_PAGE (Keyboard)
0x19, 0xe0, // USAGE_MINIMUM (Keyboard LeftControl)
0x29, 0xe7, // USAGE_MAXIMUM (Keyboard Right GUI)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x75, 0x01, // REPORT_SIZE (1)
0x95, 0x08, // REPORT_COUNT (8)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x08, // REPORT_SIZE (8)
0x81, 0x03, // INPUT (Cnst,Var,Abs)
0x95, 0x05, // REPORT_COUNT (5)
0x75, 0x01, // REPORT_SIZE (1)
0x05, 0x08, // USAGE_PAGE (LEDs)
0x19, 0x01, // USAGE_MINIMUM (Num Lock)
0x29, 0x05, // USAGE_MAXIMUM (Kana)
0x91, 0x02, // OUTPUT (Data,Var,Abs)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x03, // REPORT_SIZE (3)
0x91, 0x03, // OUTPUT (Cnst,Var,Abs)
0x95, 0x06, // REPORT_COUNT (6)
0x75, 0x08, // REPORT_SIZE (8)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0xFF, // LOGICAL_MAXIMUM (255)
0x05, 0x07, // USAGE_PAGE (Keyboard)
0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated))
0x29, 0x65, // USAGE_MAXIMUM (Keyboard Application)
0x81, 0x00, // INPUT (Data,Ary,Abs)
0xc0 // END_COLLECTION
};
#define HID_STATE_IDLE 0
#define HID_STATE_BUSY 1
/*!< hid state ! Data can be sent only when state is idle */
static volatile uint8_t hid_state = HID_STATE_IDLE;
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:
hid_state = HID_STATE_IDLE;
break;
case USBD_EVENT_SET_REMOTE_WAKEUP:
break;
case USBD_EVENT_CLR_REMOTE_WAKEUP:
break;
default:
break;
}
}
void usbd_hid_int_callback(uint8_t busid, uint8_t ep, uint32_t nbytes)
{
hid_state = HID_STATE_IDLE;
}
static struct usbd_endpoint hid_in_ep = {
.ep_cb = usbd_hid_int_callback,
.ep_addr = HID_INT_EP
};
struct usbd_interface intf0;
void hid_keyboard_init(uint8_t busid, uint32_t reg_base)
{
usbd_desc_register(busid, hid_descriptor);
usbd_add_interface(busid, usbd_hid_init_intf(busid, &intf0, hid_keyboard_report_desc, HID_KEYBOARD_REPORT_DESC_SIZE));
usbd_add_endpoint(busid, &hid_in_ep);
usbd_initialize(busid, reg_base, usbd_event_handler);
}
USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[64];
void hid_keyboard_test(uint8_t busid)
{
const uint8_t sendbuffer[8] = { 0x00, 0x00, HID_KBD_USAGE_A, 0x00, 0x00, 0x00, 0x00, 0x00 };
memcpy(write_buffer, sendbuffer, 8);
int ret = usbd_ep_start_write(busid, HID_INT_EP, write_buffer, 8);
if (ret < 0) {
return;
}
hid_state = HID_STATE_BUSY;
while (hid_state == HID_STATE_BUSY) {
}
}