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1 /* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
2
3 This software may be distributed and modified under the terms of the GNU
4 General Public License version 2 (GPL2) as published by the Free Software
5 Foundation and appearing in the file GPL2.TXT included in the packaging of
6 this file. Please note that GPL2 Section 2[b] requires that all works based
7 on this software must also be made publicly available under the terms of
8 the GPL2 ("Copyleft").
9
10 Contact information
11 -------------------
12
13 Circuits At Home, LTD
14 Web      :  http://www.circuitsathome.com
15 e-mail   :  support@circuitsathome.com
16  */
17 #if !defined(__HID_H__)
18 #define __HID_H__
19
20 #include "Usb.h"
21 #include "hidusagestr.h"
22
23 #define MAX_REPORT_PARSERS                      2
24 #define HID_MAX_HID_CLASS_DESCRIPTORS           5
25
26 #define DATA_SIZE_MASK                          0x03
27 #define TYPE_MASK                               0x0C
28 #define TAG_MASK                                0xF0
29
30 #define DATA_SIZE_0                             0x00
31 #define DATA_SIZE_1                             0x01
32 #define DATA_SIZE_2                             0x02
33 #define DATA_SIZE_4                             0x03
34
35 #define TYPE_MAIN                               0x00
36 #define TYPE_GLOBAL                             0x04
37 #define TYPE_LOCAL                              0x08
38
39 #define TAG_MAIN_INPUT                          0x80
40 #define TAG_MAIN_OUTPUT                         0x90
41 #define TAG_MAIN_COLLECTION                     0xA0
42 #define TAG_MAIN_FEATURE                        0xB0
43 #define TAG_MAIN_ENDCOLLECTION                  0xC0
44
45 #define TAG_GLOBAL_USAGEPAGE                    0x00
46 #define TAG_GLOBAL_LOGICALMIN                   0x10
47 #define TAG_GLOBAL_LOGICALMAX                   0x20
48 #define TAG_GLOBAL_PHYSMIN                      0x30
49 #define TAG_GLOBAL_PHYSMAX                      0x40
50 #define TAG_GLOBAL_UNITEXP                      0x50
51 #define TAG_GLOBAL_UNIT                         0x60
52 #define TAG_GLOBAL_REPORTSIZE                   0x70
53 #define TAG_GLOBAL_REPORTID                     0x80
54 #define TAG_GLOBAL_REPORTCOUNT                  0x90
55 #define TAG_GLOBAL_PUSH                         0xA0
56 #define TAG_GLOBAL_POP                          0xB0
57
58 #define TAG_LOCAL_USAGE                         0x00
59 #define TAG_LOCAL_USAGEMIN                      0x10
60 #define TAG_LOCAL_USAGEMAX                      0x20
61
62 /* HID requests */
63 #define bmREQ_HID_OUT                           USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
64 #define bmREQ_HID_IN                            USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
65 #define bmREQ_HID_REPORT                        USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_STANDARD|USB_SETUP_RECIPIENT_INTERFACE
66
67 /* HID constants. Not part of chapter 9 */
68 /* Class-Specific Requests */
69 #define HID_REQUEST_GET_REPORT                  0x01
70 #define HID_REQUEST_GET_IDLE                    0x02
71 #define HID_REQUEST_GET_PROTOCOL                0x03
72 #define HID_REQUEST_SET_REPORT                  0x09
73 #define HID_REQUEST_SET_IDLE                    0x0A
74 #define HID_REQUEST_SET_PROTOCOL                0x0B
75
76 /* Class Descriptor Types */
77 #define HID_DESCRIPTOR_HID                      0x21
78 #define HID_DESCRIPTOR_REPORT                   0x22
79 #define HID_DESRIPTOR_PHY                       0x23
80
81 /* Protocol Selection */
82 #define HID_BOOT_PROTOCOL                       0x00
83 #define HID_RPT_PROTOCOL                        0x01
84
85 /* HID Interface Class Code */
86 #define HID_INTF                                0x03
87
88 /* HID Interface Class SubClass Codes */
89 #define HID_BOOT_INTF_SUBCLASS                  0x01
90
91 /* HID Interface Class Protocol Codes */
92 #define HID_PROTOCOL_NONE                       0x00
93 #define HID_PROTOCOL_KEYBOARD                   0x01
94 #define HID_PROTOCOL_MOUSE                      0x02
95
96 #define HID_ITEM_TYPE_MAIN                      0
97 #define HID_ITEM_TYPE_GLOBAL                    1
98 #define HID_ITEM_TYPE_LOCAL                     2
99 #define HID_ITEM_TYPE_RESERVED                  3
100
101 #define HID_LONG_ITEM_PREFIX                    0xfe    // Long item prefix value
102
103 #define bmHID_MAIN_ITEM_TAG                     0xfc    // Main item tag mask
104
105 #define bmHID_MAIN_ITEM_INPUT                   0x80    // Main item Input tag value
106 #define bmHID_MAIN_ITEM_OUTPUT                  0x90    // Main item Output tag value
107 #define bmHID_MAIN_ITEM_FEATURE                 0xb0    // Main item Feature tag value
108 #define bmHID_MAIN_ITEM_COLLECTION              0xa0    // Main item Collection tag value
109 #define bmHID_MAIN_ITEM_END_COLLECTION          0xce    // Main item End Collection tag value
110
111 #define HID_MAIN_ITEM_COLLECTION_PHYSICAL       0
112 #define HID_MAIN_ITEM_COLLECTION_APPLICATION    1
113 #define HID_MAIN_ITEM_COLLECTION_LOGICAL        2
114 #define HID_MAIN_ITEM_COLLECTION_REPORT         3
115 #define HID_MAIN_ITEM_COLLECTION_NAMED_ARRAY    4
116 #define HID_MAIN_ITEM_COLLECTION_USAGE_SWITCH   5
117 #define HID_MAIN_ITEM_COLLECTION_USAGE_MODIFIER 6
118
119 struct HidItemPrefix {
120         uint8_t bSize : 2;
121         uint8_t bType : 2;
122         uint8_t bTag : 4;
123 };
124
125 struct MainItemIOFeature {
126         uint8_t bmIsConstantOrData : 1;
127         uint8_t bmIsArrayOrVariable : 1;
128         uint8_t bmIsRelativeOrAbsolute : 1;
129         uint8_t bmIsWrapOrNoWrap : 1;
130         uint8_t bmIsNonLonearOrLinear : 1;
131         uint8_t bmIsNoPreferedOrPrefered : 1;
132         uint8_t bmIsNullOrNoNull : 1;
133         uint8_t bmIsVolatileOrNonVolatile : 1;
134 };
135
136 class HID;
137
138 class HIDReportParser {
139 public:
140         virtual void Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf) = 0;
141 };
142
143 class HID : public USBDeviceConfig, public UsbConfigXtracter {
144 protected:
145         USB *pUsb; // USB class instance pointer
146         uint8_t bAddress; // address
147
148 protected:
149         static const uint8_t epInterruptInIndex = 1; // InterruptIN  endpoint index
150         static const uint8_t epInterruptOutIndex = 2; // InterruptOUT endpoint index
151
152         static const uint8_t maxHidInterfaces = 3;
153         static const uint8_t maxEpPerInterface = 2;
154         static const uint8_t totalEndpoints = (maxHidInterfaces * maxEpPerInterface + 1);
155
156         void PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr);
157         void PrintHidDescriptor(const USB_HID_DESCRIPTOR *pDesc);
158
159         virtual HIDReportParser* GetReportParser(uint8_t id) {
160                 return NULL;
161         };
162
163 public:
164
165         HID(USB *pusb) : pUsb(pusb) {
166         };
167
168         const USB* GetUsb() {
169                 return pUsb;
170         };
171
172         virtual bool SetReportParser(uint8_t id, HIDReportParser *prs) {
173                 return false;
174         };
175
176         uint8_t SetProtocol(uint8_t iface, uint8_t protocol);
177         uint8_t GetProtocol(uint8_t iface, uint8_t* dataptr);
178         uint8_t GetIdle(uint8_t iface, uint8_t reportID, uint8_t* dataptr);
179         uint8_t SetIdle(uint8_t iface, uint8_t reportID, uint8_t duration);
180
181         uint8_t GetReportDescr(uint16_t wIndex, USBReadParser *parser = NULL);
182
183         uint8_t GetHidDescr(uint8_t ep, uint16_t nbytes, uint8_t* dataptr);
184         uint8_t GetReport(uint8_t ep, uint8_t iface, uint8_t report_type, uint8_t report_id, uint16_t nbytes, uint8_t* dataptr);
185         uint8_t SetReport(uint8_t ep, uint8_t iface, uint8_t report_type, uint8_t report_id, uint16_t nbytes, uint8_t* dataptr);
186 };
187
188 #endif // __HID_H__