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cd011f58 AW |
1 | // USBHID.c\r |
2 | // Human Interface Device (HID) class\r | |
3 | // Copyright (c) 2011 ARM Limited. All rights reserved.\r | |
4 | \r | |
5 | #include "stdint.h"\r | |
6 | #include "USBBusInterface.h"\r | |
7 | #include "USBHID.h"\r | |
8 | \r | |
9 | \r | |
10 | USBHID::USBHID(uint8_t output_report_length, uint8_t input_report_length, uint16_t vendor_id, uint16_t product_id, uint16_t product_release, bool connect): USBDevice(vendor_id, product_id, product_release)\r | |
11 | {\r | |
12 | output_length = output_report_length;\r | |
13 | input_length = input_report_length;\r | |
14 | if(connect) {\r | |
15 | USBDevice::connect();\r | |
16 | }\r | |
17 | }\r | |
18 | \r | |
19 | \r | |
20 | bool USBHID::send(HID_REPORT *report)\r | |
21 | {\r | |
22 | return write(EPINT_IN, report->data, report->length, MAX_HID_REPORT_SIZE);\r | |
23 | }\r | |
24 | \r | |
25 | bool USBHID::sendNB(HID_REPORT *report)\r | |
26 | {\r | |
27 | return writeNB(EPINT_IN, report->data, report->length, MAX_HID_REPORT_SIZE);\r | |
28 | }\r | |
29 | \r | |
30 | \r | |
31 | bool USBHID::read(HID_REPORT *report)\r | |
32 | {\r | |
33 | uint16_t bytesRead = 0;\r | |
34 | bool result;\r | |
35 | result = USBDevice::readEP(EPINT_OUT, report->data, &bytesRead, MAX_HID_REPORT_SIZE);\r | |
36 | if(!readStart(EPINT_OUT, MAX_HID_REPORT_SIZE))\r | |
37 | return false;\r | |
38 | report->length = bytesRead;\r | |
39 | return result;\r | |
40 | }\r | |
41 | \r | |
42 | \r | |
43 | bool USBHID::readNB(HID_REPORT *report)\r | |
44 | {\r | |
45 | uint16_t bytesRead = 0;\r | |
46 | bool result;\r | |
47 | result = USBDevice::readEP_NB(EPINT_OUT, report->data, &bytesRead, MAX_HID_REPORT_SIZE);\r | |
48 | report->length = bytesRead;\r | |
49 | if(!readStart(EPINT_OUT, MAX_HID_REPORT_SIZE))\r | |
50 | return false;\r | |
51 | return result;\r | |
52 | }\r | |
53 | \r | |
54 | \r | |
55 | uint16_t USBHID::reportDescLength() {\r | |
56 | reportDesc();\r | |
57 | return reportLength;\r | |
58 | }\r | |
59 | \r | |
60 | \r | |
61 | \r | |
62 | //\r | |
63 | // Route callbacks from lower layers to class(es)\r | |
64 | //\r | |
65 | \r | |
66 | \r | |
67 | // Called in ISR context\r | |
68 | // Called by USBDevice on Endpoint0 request\r | |
69 | // This is used to handle extensions to standard requests\r | |
70 | // and class specific requests\r | |
71 | // Return true if class handles this request\r | |
72 | bool USBHID::USBCallback_request() {\r | |
73 | bool success = false;\r | |
74 | CONTROL_TRANSFER * transfer = getTransferPtr();\r | |
75 | uint8_t *hidDescriptor;\r | |
76 | \r | |
77 | // Process additional standard requests\r | |
78 | \r | |
79 | if ((transfer->setup.bmRequestType.Type == STANDARD_TYPE))\r | |
80 | {\r | |
81 | switch (transfer->setup.bRequest)\r | |
82 | {\r | |
83 | case GET_DESCRIPTOR:\r | |
84 | switch (DESCRIPTOR_TYPE(transfer->setup.wValue))\r | |
85 | {\r | |
86 | case REPORT_DESCRIPTOR:\r | |
87 | if ((reportDesc() != NULL) \\r | |
88 | && (reportDescLength() != 0))\r | |
89 | {\r | |
90 | transfer->remaining = reportDescLength();\r | |
91 | transfer->ptr = reportDesc();\r | |
92 | transfer->direction = DEVICE_TO_HOST;\r | |
93 | success = true;\r | |
94 | }\r | |
95 | break;\r | |
96 | case HID_DESCRIPTOR:\r | |
97 | // Find the HID descriptor, after the configuration descriptor\r | |
98 | hidDescriptor = findDescriptor(HID_DESCRIPTOR);\r | |
99 | if (hidDescriptor != NULL)\r | |
100 | {\r | |
101 | transfer->remaining = HID_DESCRIPTOR_LENGTH;\r | |
102 | transfer->ptr = hidDescriptor;\r | |
103 | transfer->direction = DEVICE_TO_HOST;\r | |
104 | success = true;\r | |
105 | }\r | |
106 | break;\r | |
107 | \r | |
108 | default:\r | |
109 | break;\r | |
110 | }\r | |
111 | break;\r | |
112 | default:\r | |
113 | break;\r | |
114 | }\r | |
115 | }\r | |
116 | \r | |
117 | // Process class-specific requests\r | |
118 | \r | |
119 | if (transfer->setup.bmRequestType.Type == CLASS_TYPE)\r | |
120 | {\r | |
121 | switch (transfer->setup.bRequest)\r | |
122 | {\r | |
123 | case SET_REPORT:\r | |
124 | // First byte will be used for report ID\r | |
125 | outputReport.data[0] = transfer->setup.wValue & 0xff;\r | |
126 | outputReport.length = transfer->setup.wLength + 1;\r | |
127 | \r | |
128 | transfer->remaining = sizeof(outputReport.data) - 1;\r | |
129 | transfer->ptr = &outputReport.data[1];\r | |
130 | transfer->direction = HOST_TO_DEVICE;\r | |
131 | transfer->notify = true;\r | |
132 | success = true;\r | |
133 | default:\r | |
134 | break;\r | |
135 | }\r | |
136 | }\r | |
137 | \r | |
138 | return success;\r | |
139 | }\r | |
140 | \r | |
141 | \r | |
142 | #define DEFAULT_CONFIGURATION (1)\r | |
143 | \r | |
144 | \r | |
145 | // Called in ISR context\r | |
146 | // Set configuration. Return false if the\r | |
147 | // configuration is not supported\r | |
148 | bool USBHID::USBCallback_setConfiguration(uint8_t configuration) {\r | |
149 | if (configuration != DEFAULT_CONFIGURATION) {\r | |
150 | return false;\r | |
151 | }\r | |
152 | \r | |
153 | // Configure endpoints > 0\r | |
154 | addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT);\r | |
155 | addEndpoint(EPINT_OUT, MAX_PACKET_SIZE_EPINT);\r | |
156 | \r | |
157 | // We activate the endpoint to be able to recceive data\r | |
158 | readStart(EPINT_OUT, MAX_PACKET_SIZE_EPINT);\r | |
159 | return true;\r | |
160 | }\r | |
161 | \r | |
162 | \r | |
163 | uint8_t * USBHID::stringIinterfaceDesc() {\r | |
164 | static uint8_t stringIinterfaceDescriptor[] = {\r | |
165 | 0x08, //bLength\r | |
166 | STRING_DESCRIPTOR, //bDescriptorType 0x03\r | |
167 | 'H',0,'I',0,'D',0, //bString iInterface - HID\r | |
168 | };\r | |
169 | return stringIinterfaceDescriptor;\r | |
170 | }\r | |
171 | \r | |
172 | uint8_t * USBHID::stringIproductDesc() {\r | |
173 | static uint8_t stringIproductDescriptor[] = {\r | |
174 | 0x16, //bLength\r | |
175 | STRING_DESCRIPTOR, //bDescriptorType 0x03\r | |
176 | 'H',0,'I',0,'D',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0 //bString iProduct - HID device\r | |
177 | };\r | |
178 | return stringIproductDescriptor;\r | |
179 | }\r | |
180 | \r | |
181 | \r | |
182 | \r | |
183 | uint8_t * USBHID::reportDesc() {\r | |
184 | static uint8_t reportDescriptor[] = {\r | |
185 | 0x06, LSB(0xFFAB), MSB(0xFFAB),\r | |
186 | 0x0A, LSB(0x0200), MSB(0x0200),\r | |
187 | 0xA1, 0x01, // Collection 0x01\r | |
188 | 0x75, 0x08, // report size = 8 bits\r | |
189 | 0x15, 0x00, // logical minimum = 0\r | |
190 | 0x26, 0xFF, 0x00, // logical maximum = 255\r | |
191 | 0x95, input_length, // report count\r | |
192 | 0x09, 0x01, // usage\r | |
193 | 0x81, 0x02, // Input (array)\r | |
194 | 0x95, output_length, // report count\r | |
195 | 0x09, 0x02, // usage\r | |
196 | 0x91, 0x02, // Output (array)\r | |
197 | 0xC0 // end collection\r | |
198 | \r | |
199 | };\r | |
200 | reportLength = sizeof(reportDescriptor);\r | |
201 | return reportDescriptor;\r | |
202 | }\r | |
203 | \r | |
204 | #define DEFAULT_CONFIGURATION (1)\r | |
205 | #define TOTAL_DESCRIPTOR_LENGTH ((1 * CONFIGURATION_DESCRIPTOR_LENGTH) \\r | |
206 | + (1 * INTERFACE_DESCRIPTOR_LENGTH) \\r | |
207 | + (1 * HID_DESCRIPTOR_LENGTH) \\r | |
208 | + (2 * ENDPOINT_DESCRIPTOR_LENGTH))\r | |
209 | \r | |
210 | uint8_t * USBHID::configurationDesc() {\r | |
211 | static uint8_t configurationDescriptor[] = {\r | |
212 | CONFIGURATION_DESCRIPTOR_LENGTH,// bLength\r | |
213 | CONFIGURATION_DESCRIPTOR, // bDescriptorType\r | |
214 | LSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (LSB)\r | |
215 | MSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (MSB)\r | |
216 | 0x01, // bNumInterfaces\r | |
217 | DEFAULT_CONFIGURATION, // bConfigurationValue\r | |
218 | 0x00, // iConfiguration\r | |
219 | C_RESERVED | C_SELF_POWERED, // bmAttributes\r | |
220 | C_POWER(0), // bMaxPower\r | |
221 | \r | |
222 | INTERFACE_DESCRIPTOR_LENGTH, // bLength\r | |
223 | INTERFACE_DESCRIPTOR, // bDescriptorType\r | |
224 | 0x00, // bInterfaceNumber\r | |
225 | 0x00, // bAlternateSetting\r | |
226 | 0x02, // bNumEndpoints\r | |
227 | HID_CLASS, // bInterfaceClass\r | |
228 | HID_SUBCLASS_NONE, // bInterfaceSubClass\r | |
229 | HID_PROTOCOL_NONE, // bInterfaceProtocol\r | |
230 | 0x00, // iInterface\r | |
231 | \r | |
232 | HID_DESCRIPTOR_LENGTH, // bLength\r | |
233 | HID_DESCRIPTOR, // bDescriptorType\r | |
234 | LSB(HID_VERSION_1_11), // bcdHID (LSB)\r | |
235 | MSB(HID_VERSION_1_11), // bcdHID (MSB)\r | |
236 | 0x00, // bCountryCode\r | |
237 | 0x01, // bNumDescriptors\r | |
238 | REPORT_DESCRIPTOR, // bDescriptorType\r | |
239 | LSB(this->reportDescLength()), // wDescriptorLength (LSB)\r | |
240 | MSB(this->reportDescLength()), // wDescriptorLength (MSB)\r | |
241 | \r | |
242 | ENDPOINT_DESCRIPTOR_LENGTH, // bLength\r | |
243 | ENDPOINT_DESCRIPTOR, // bDescriptorType\r | |
244 | PHY_TO_DESC(EPINT_IN), // bEndpointAddress\r | |
245 | E_INTERRUPT, // bmAttributes\r | |
246 | LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)\r | |
247 | MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)\r | |
248 | 1, // bInterval (milliseconds)\r | |
249 | \r | |
250 | ENDPOINT_DESCRIPTOR_LENGTH, // bLength\r | |
251 | ENDPOINT_DESCRIPTOR, // bDescriptorType\r | |
252 | PHY_TO_DESC(EPINT_OUT), // bEndpointAddress\r | |
253 | E_INTERRUPT, // bmAttributes\r | |
254 | LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)\r | |
255 | MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)\r | |
256 | 1, // bInterval (milliseconds)\r | |
257 | };\r | |
258 | return configurationDescriptor;\r | |
259 | }\r |