1 #include "usbd_core.h"
2 #include "usbd_hid.h"
3
4 #define USBD_VID 0xffff
5 #define USBD_PID 0xffff
6 #define USBD_MAX_POWER 100
7 #define USBD_LANGID_STRING 1033
8
9 #define HID_INT_EP 0x81
10 #define HID_INT_EP_SIZE 8
11 #define HID_INT_EP_INTERVAL 10
12
13 #define USB_HID_CONFIG_DESC_SIZ 34
14 #define HID_KEYBOARD_REPORT_DESC_SIZE 63
15
16 static const uint8_t hid_descriptor[] = {
17 USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01),
18 USB_CONFIG_DESCRIPTOR_INIT(USB_HID_CONFIG_DESC_SIZ, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
19
20 /************** Descriptor of Joystick Mouse interface ****************/
21 /* 09 */
22 0x09, /* bLength: Interface Descriptor size */
23 USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType: Interface descriptor type */
24 0x00, /* bInterfaceNumber: Number of Interface */
25 0x00, /* bAlternateSetting: Alternate setting */
26 0x01, /* bNumEndpoints */
27 0x03, /* bInterfaceClass: HID */
28 0x01, /* bInterfaceSubClass : 1=BOOT, 0=no boot */
29 0x01, /* nInterfaceProtocol : 0=none, 1=keyboard, 2=mouse */
30 0, /* iInterface: Index of string descriptor */
31 /******************** Descriptor of Joystick Mouse HID ********************/
32 /* 18 */
33 0x09, /* bLength: HID Descriptor size */
34 HID_DESCRIPTOR_TYPE_HID, /* bDescriptorType: HID */
35 0x11, /* bcdHID: HID Class Spec release number */
36 0x01,
37 0x00, /* bCountryCode: Hardware target country */
38 0x01, /* bNumDescriptors: Number of HID class descriptors to follow */
39 0x22, /* bDescriptorType */
40 HID_KEYBOARD_REPORT_DESC_SIZE, /* wItemLength: Total length of Report descriptor */
41 0x00,
42 /******************** Descriptor of Mouse endpoint ********************/
43 /* 27 */
44 0x07, /* bLength: Endpoint Descriptor size */
45 USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType: */
46 HID_INT_EP, /* bEndpointAddress: Endpoint Address (IN) */
47 0x03, /* bmAttributes: Interrupt endpoint */
48 HID_INT_EP_SIZE, /* wMaxPacketSize: 4 Byte max */
49 0x00,
50 HID_INT_EP_INTERVAL, /* bInterval: Polling Interval */
51 /* 34 */
52 ///////////////////////////////////////
53 /// string0 descriptor
54 ///////////////////////////////////////
55 USB_LANGID_INIT(USBD_LANGID_STRING),
56 ///////////////////////////////////////
57 /// string1 descriptor
58 ///////////////////////////////////////
59 0x14, /* bLength */
60 USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
61 'C', 0x00, /* wcChar0 */
62 'h', 0x00, /* wcChar1 */
63 'e', 0x00, /* wcChar2 */
64 'r', 0x00, /* wcChar3 */
65 'r', 0x00, /* wcChar4 */
66 'y', 0x00, /* wcChar5 */
67 'U', 0x00, /* wcChar6 */
68 'S', 0x00, /* wcChar7 */
69 'B', 0x00, /* wcChar8 */
70 ///////////////////////////////////////
71 /// string2 descriptor
72 ///////////////////////////////////////
73 0x26, /* bLength */
74 USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
75 'C', 0x00, /* wcChar0 */
76 'h', 0x00, /* wcChar1 */
77 'e', 0x00, /* wcChar2 */
78 'r', 0x00, /* wcChar3 */
79 'r', 0x00, /* wcChar4 */
80 'y', 0x00, /* wcChar5 */
81 'U', 0x00, /* wcChar6 */
82 'S', 0x00, /* wcChar7 */
83 'B', 0x00, /* wcChar8 */
84 ' ', 0x00, /* wcChar9 */
85 'H', 0x00, /* wcChar10 */
86 'I', 0x00, /* wcChar11 */
87 'D', 0x00, /* wcChar12 */
88 ' ', 0x00, /* wcChar13 */
89 'D', 0x00, /* wcChar14 */
90 'E', 0x00, /* wcChar15 */
91 'M', 0x00, /* wcChar16 */
92 'O', 0x00, /* wcChar17 */
93 ///////////////////////////////////////
94 /// string3 descriptor
95 ///////////////////////////////////////
96 0x16, /* bLength */
97 USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
98 '2', 0x00, /* wcChar0 */
99 '0', 0x00, /* wcChar1 */
100 '2', 0x00, /* wcChar2 */
101 '2', 0x00, /* wcChar3 */
102 '1', 0x00, /* wcChar4 */
103 '2', 0x00, /* wcChar5 */
104 '3', 0x00, /* wcChar6 */
105 '4', 0x00, /* wcChar7 */
106 '5', 0x00, /* wcChar8 */
107 '6', 0x00, /* wcChar9 */
108 #ifdef CONFIG_USB_HS
109 ///////////////////////////////////////
110 /// device qualifier descriptor
111 ///////////////////////////////////////
112 0x0a,
113 USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
114 0x00,
115 0x02,
116 0x00,
117 0x00,
118 0x00,
119 0x40,
120 0x01,
121 0x00,
122 #endif
123 0x00
124 };
125
126 /* USB HID device Configuration Descriptor */
127 static uint8_t hid_desc[9] __ALIGN_END = {
128 /* 18 */
129 0x09, /* bLength: HID Descriptor size */
130 HID_DESCRIPTOR_TYPE_HID, /* bDescriptorType: HID */
131 0x11, /* bcdHID: HID Class Spec release number */
132 0x01,
133 0x00, /* bCountryCode: Hardware target country */
134 0x01, /* bNumDescriptors: Number of HID class descriptors to follow */
135 0x22, /* bDescriptorType */
136 HID_KEYBOARD_REPORT_DESC_SIZE, /* wItemLength: Total length of Report descriptor */
137 0x00,
138 };
139
140 static const uint8_t hid_keyboard_report_desc[HID_KEYBOARD_REPORT_DESC_SIZE] = {
141 0x05, 0x01, // USAGE_PAGE (Generic Desktop)
142 0x09, 0x06, // USAGE (Keyboard)
143 0xa1, 0x01, // COLLECTION (Application)
144 0x05, 0x07, // USAGE_PAGE (Keyboard)
145 0x19, 0xe0, // USAGE_MINIMUM (Keyboard LeftControl)
146 0x29, 0xe7, // USAGE_MAXIMUM (Keyboard Right GUI)
147 0x15, 0x00, // LOGICAL_MINIMUM (0)
148 0x25, 0x01, // LOGICAL_MAXIMUM (1)
149 0x75, 0x01, // REPORT_SIZE (1)
150 0x95, 0x08, // REPORT_COUNT (8)
151 0x81, 0x02, // INPUT (Data,Var,Abs)
152 0x95, 0x01, // REPORT_COUNT (1)
153 0x75, 0x08, // REPORT_SIZE (8)
154 0x81, 0x03, // INPUT (Cnst,Var,Abs)
155 0x95, 0x05, // REPORT_COUNT (5)
156 0x75, 0x01, // REPORT_SIZE (1)
157 0x05, 0x08, // USAGE_PAGE (LEDs)
158 0x19, 0x01, // USAGE_MINIMUM (Num Lock)
159 0x29, 0x05, // USAGE_MAXIMUM (Kana)
160 0x91, 0x02, // OUTPUT (Data,Var,Abs)
161 0x95, 0x01, // REPORT_COUNT (1)
162 0x75, 0x03, // REPORT_SIZE (3)
163 0x91, 0x03, // OUTPUT (Cnst,Var,Abs)
164 0x95, 0x06, // REPORT_COUNT (6)
165 0x75, 0x08, // REPORT_SIZE (8)
166 0x15, 0x00, // LOGICAL_MINIMUM (0)
167 0x25, 0xFF, // LOGICAL_MAXIMUM (255)
168 0x05, 0x07, // USAGE_PAGE (Keyboard)
169 0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated))
170 0x29, 0x65, // USAGE_MAXIMUM (Keyboard Application)
171 0x81, 0x00, // INPUT (Data,Ary,Abs)
172 0xc0 // END_COLLECTION
173 };
174
usbd_event_handler(uint8_t event)175 void usbd_event_handler(uint8_t event)
176 {
177 switch (event) {
178 case USBD_EVENT_RESET:
179 break;
180 case USBD_EVENT_CONNECTED:
181 break;
182 case USBD_EVENT_DISCONNECTED:
183 break;
184 case USBD_EVENT_RESUME:
185 break;
186 case USBD_EVENT_SUSPEND:
187 break;
188 case USBD_EVENT_CONFIGURED:
189 break;
190 case USBD_EVENT_SET_REMOTE_WAKEUP:
191 break;
192 case USBD_EVENT_CLR_REMOTE_WAKEUP:
193 break;
194
195 default:
196 break;
197 }
198 }
199
200 #define HID_STATE_IDLE 0
201 #define HID_STATE_BUSY 1
202
203 /*!< hid state ! Data can be sent only when state is idle */
204 static volatile uint8_t hid_state = HID_STATE_IDLE;
205
usbd_hid_int_callback(uint8_t ep,uint32_t nbytes)206 void usbd_hid_int_callback(uint8_t ep, uint32_t nbytes)
207 {
208 hid_state = HID_STATE_IDLE;
209 }
210
211 static struct usbd_endpoint hid_in_ep = {
212 .ep_cb = usbd_hid_int_callback,
213 .ep_addr = HID_INT_EP
214 };
215
216 struct usbd_interface intf0;
217
hid_keyboard_init(void)218 void hid_keyboard_init(void)
219 {
220 usbd_desc_register(hid_descriptor);
221 usbd_add_interface(usbd_hid_init_intf(&intf0, hid_keyboard_report_desc, HID_KEYBOARD_REPORT_DESC_SIZE));
222 usbd_add_endpoint(&hid_in_ep);
223
224 usbd_initialize();
225 }
226
227 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[64];
228
hid_keyboard_test(void)229 void hid_keyboard_test(void)
230 {
231 const uint8_t sendbuffer[8] = { 0x00, 0x00, HID_KBD_USAGE_A, 0x00, 0x00, 0x00, 0x00, 0x00 };
232
233 memcpy(write_buffer, sendbuffer, 8);
234 int ret = usbd_ep_start_write(HID_INT_EP, write_buffer, 8);
235 if (ret < 0) {
236 return;
237 }
238 hid_state = HID_STATE_BUSY;
239 while (hid_state == HID_STATE_BUSY) {
240 }
241 }
242