[136] | 1 | /* Copyright (c) 2011, Peter Barrett
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| 2 | **
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| 3 | ** Permission to use, copy, modify, and/or distribute this software for
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| 4 | ** any purpose with or without fee is hereby granted, provided that the
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| 5 | ** above copyright notice and this permission notice appear in all copies.
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| 6 | **
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| 7 | ** THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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| 8 | ** WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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| 9 | ** WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR
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| 10 | ** BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
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| 11 | ** OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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| 12 | ** WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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| 13 | ** ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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| 14 | ** SOFTWARE.
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| 15 | */
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| 16 |
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| 17 |
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| 18 | #include "USBAPI.h"
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| 19 | #include "Reset.h"
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| 20 | #include "USBCore.h"
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| 21 | #include "USBDesc.h"
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| 22 | #include "sam.h"
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| 23 | #include "USB/USB_device.h"
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| 24 |
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| 25 |
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| 26 | #ifdef HID_ENABLED
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| 27 |
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| 28 | //#define RAWHID_ENABLED
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| 29 |
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| 30 | // Singletons for mouse and keyboard
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| 31 | Mouse_ Mouse;
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| 32 | Keyboard_ Keyboard;
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| 33 |
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| 34 | //================================================================================
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| 35 | //================================================================================
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| 36 |
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| 37 | #define LSB(_x) ((_x) & 0xFF)
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| 38 | #define MSB(_x) ((_x) >> 8)
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| 39 |
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| 40 | #define RAWHID_USAGE_PAGE 0xFFC0
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| 41 | #define RAWHID_USAGE 0x0C00
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| 42 | #define RAWHID_TX_SIZE 64
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| 43 | #define RAWHID_RX_SIZE 64
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| 44 |
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| 45 | // HID report descriptor
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| 46 | _Pragma("pack(1)")
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| 47 | extern const uint8_t _hidReportDescriptor[] = {
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| 48 | // Mouse
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| 49 | 0x05, 0x01, // USAGE_PAGE (Generic Desktop) // 54
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| 50 | 0x09, 0x02, // USAGE (Mouse)
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| 51 | 0xa1, 0x01, // COLLECTION (Application)
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| 52 | 0x09, 0x01, // USAGE (Pointer)
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| 53 | 0xa1, 0x00, // COLLECTION (Physical)
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| 54 | 0x85, 0x01, // REPORT_ID (1)
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| 55 | 0x05, 0x09, // USAGE_PAGE (Button)
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| 56 | 0x19, 0x01, // USAGE_MINIMUM (Button 1)
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| 57 | 0x29, 0x03, // USAGE_MAXIMUM (Button 3)
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| 58 | 0x15, 0x00, // LOGICAL_MINIMUM (0)
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| 59 | 0x25, 0x01, // LOGICAL_MAXIMUM (1)
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| 60 | 0x95, 0x03, // REPORT_COUNT (3)
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| 61 | 0x75, 0x01, // REPORT_SIZE (1)
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| 62 | 0x81, 0x02, // INPUT (Data,Var,Abs)
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| 63 | 0x95, 0x01, // REPORT_COUNT (1)
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| 64 | 0x75, 0x05, // REPORT_SIZE (5)
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| 65 | 0x81, 0x03, // INPUT (Cnst,Var,Abs)
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| 66 | 0x05, 0x01, // USAGE_PAGE (Generic Desktop)
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| 67 | 0x09, 0x30, // USAGE (X)
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| 68 | 0x09, 0x31, // USAGE (Y)
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| 69 | 0x09, 0x38, // USAGE (Wheel)
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| 70 | 0x15, 0x81, // LOGICAL_MINIMUM (-127)
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| 71 | 0x25, 0x7f, // LOGICAL_MAXIMUM (127)
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| 72 | 0x75, 0x08, // REPORT_SIZE (8)
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| 73 | 0x95, 0x03, // REPORT_COUNT (3)
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| 74 | 0x81, 0x06, // INPUT (Data,Var,Rel)
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| 75 | 0xc0, // END_COLLECTION
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| 76 | 0xc0, // END_COLLECTION
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| 77 |
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| 78 | // Keyboard
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| 79 | 0x05, 0x01, // USAGE_PAGE (Generic Desktop) // 47
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| 80 | 0x09, 0x06, // USAGE (Keyboard)
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| 81 | 0xa1, 0x01, // COLLECTION (Application)
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| 82 | 0x85, 0x02, // REPORT_ID (2)
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| 83 | 0x05, 0x07, // USAGE_PAGE (Keyboard)
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| 84 |
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| 85 | 0x19, 0xe0, // USAGE_MINIMUM (Keyboard LeftControl)
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| 86 | 0x29, 0xe7, // USAGE_MAXIMUM (Keyboard Right GUI)
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| 87 | 0x15, 0x00, // LOGICAL_MINIMUM (0)
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| 88 | 0x25, 0x01, // LOGICAL_MAXIMUM (1)
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| 89 | 0x75, 0x01, // REPORT_SIZE (1)
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| 90 |
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| 91 | 0x95, 0x08, // REPORT_COUNT (8)
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| 92 | 0x81, 0x02, // INPUT (Data,Var,Abs)
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| 93 | 0x95, 0x01, // REPORT_COUNT (1)
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| 94 | 0x75, 0x08, // REPORT_SIZE (8)
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| 95 | 0x81, 0x03, // INPUT (Cnst,Var,Abs)
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| 96 |
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| 97 | 0x95, 0x06, // REPORT_COUNT (6)
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| 98 | 0x75, 0x08, // REPORT_SIZE (8)
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| 99 | 0x15, 0x00, // LOGICAL_MINIMUM (0)
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| 100 | 0x25, 0x65, // LOGICAL_MAXIMUM (101)
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| 101 | 0x05, 0x07, // USAGE_PAGE (Keyboard)
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| 102 |
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| 103 | 0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated))
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| 104 | 0x29, 0x65, // USAGE_MAXIMUM (Keyboard Application)
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| 105 | 0x81, 0x00, // INPUT (Data,Ary,Abs)
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| 106 | 0xc0, // END_COLLECTION
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| 107 |
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| 108 | #ifdef RAWHID_ENABLED
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| 109 | // RAW HID
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| 110 | 0x06, LSB(RAWHID_USAGE_PAGE), MSB(RAWHID_USAGE_PAGE), // 30
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| 111 | 0x0A, LSB(RAWHID_USAGE), MSB(RAWHID_USAGE),
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| 112 |
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| 113 | 0xA1, 0x01, // Collection 0x01
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| 114 | 0x85, 0x03, // REPORT_ID (3)
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| 115 | 0x75, 0x08, // report size = 8 bits
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| 116 | 0x15, 0x00, // logical minimum = 0
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| 117 | 0x26, 0xFF, 0x00, // logical maximum = 255
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| 118 |
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| 119 | 0x95, 64, // report count TX
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| 120 | 0x09, 0x01, // usage
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| 121 | 0x81, 0x02, // Input (array)
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| 122 |
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| 123 | 0x95, 64, // report count RX
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| 124 | 0x09, 0x02, // usage
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| 125 | 0x91, 0x02, // Output (array)
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| 126 | 0xC0 // end collection
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| 127 | #endif
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| 128 | };
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| 129 |
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| 130 | extern const HIDDescriptor _hidInterface =
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| 131 | {
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| 132 | D_INTERFACE(HID_INTERFACE,1,3,0,0),
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| 133 | D_HIDREPORT(sizeof(_hidReportDescriptor)),
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| 134 | D_ENDPOINT(USB_ENDPOINT_IN(HID_ENDPOINT_INT),USB_ENDPOINT_TYPE_INTERRUPT,0x40,0x01)
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| 135 | };
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| 136 | _Pragma("pack()")
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| 137 |
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| 138 | //================================================================================
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| 139 | //================================================================================
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| 140 | // Driver
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| 141 |
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| 142 | uint8_t _hid_protocol = 1;
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| 143 | uint8_t _hid_idle = 1;
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| 144 |
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| 145 | #define WEAK __attribute__ ((weak))
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| 146 |
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| 147 | const void* WEAK HID_GetInterface(void)
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| 148 | {
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| 149 | return &_hidInterface;
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| 150 | }
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| 151 |
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| 152 | uint32_t WEAK HID_GetInterfaceLength(void)
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| 153 | {
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| 154 | return sizeof( _hidInterface );
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| 155 | }
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| 156 |
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| 157 | uint32_t HID_SizeReportDescriptor(void)
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| 158 | {
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| 159 | return sizeof(_hidReportDescriptor);
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| 160 | }
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| 161 |
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| 162 | uint32_t WEAK HID_GetDescriptor(void)
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| 163 | {
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| 164 | return USBD_SendControl(0,_hidReportDescriptor,sizeof(_hidReportDescriptor));
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| 165 | }
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| 166 |
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| 167 | void WEAK HID_SendReport(uint8_t id, const void* data, uint32_t len)
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| 168 | {
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| 169 | uint8_t p[8];
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| 170 | const uint8_t *d = reinterpret_cast<const uint8_t *>(data);
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| 171 |
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| 172 | p[0] = id;
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| 173 | for (uint32_t i=0; i<len; i++)
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| 174 | {
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| 175 | p[i+1] = d[i];
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| 176 | }
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| 177 | USBD_Send(HID_ENDPOINT_INT, p, len+1);
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| 178 | }
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| 179 |
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| 180 | bool WEAK HID_Setup(Setup& setup)
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| 181 | {
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| 182 | uint8_t r = setup.bRequest;
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| 183 | uint8_t requestType = setup.bmRequestType;
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| 184 |
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| 185 | if (REQUEST_DEVICETOHOST_CLASS_INTERFACE == requestType)
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| 186 | {
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| 187 | if (HID_GET_REPORT == r)
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| 188 | {
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| 189 | //HID_GetReport();
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| 190 | return true;
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| 191 | }
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| 192 | if (HID_GET_PROTOCOL == r)
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| 193 | {
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| 194 | //Send8(_hid_protocol);
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| 195 | return true;
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| 196 | }
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| 197 | if (HID_GET_IDLE == r)
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| 198 | {
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| 199 | UDD_Send(0, &_hid_idle, 1);
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| 200 | UDD_ClearIN();
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| 201 | return true;
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| 202 | }
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| 203 | }
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| 204 |
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| 205 | if (REQUEST_HOSTTODEVICE_CLASS_INTERFACE == requestType)
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| 206 | {
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| 207 | if (HID_SET_PROTOCOL == r)
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| 208 | {
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| 209 | _hid_protocol = setup.wValueL;
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| 210 | return true;
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| 211 | }
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| 212 |
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| 213 | if (HID_SET_IDLE == r)
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| 214 | {
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| 215 | _hid_idle = setup.wValueH;
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| 216 | return true;
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| 217 | }
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| 218 | }
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| 219 | return false;
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| 220 | }
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| 221 |
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| 222 | //================================================================================
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| 223 | //================================================================================
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| 224 | // Mouse
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| 225 |
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| 226 | Mouse_::Mouse_(void) : _buttons(0)
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| 227 | {
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| 228 | }
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| 229 |
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| 230 | void Mouse_::begin(void)
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| 231 | {
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| 232 | }
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| 233 |
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| 234 | void Mouse_::end(void)
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| 235 | {
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| 236 | }
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| 237 |
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| 238 | void Mouse_::click(uint8_t b)
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| 239 | {
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| 240 | _buttons = b;
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| 241 | move(0,0,0);
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| 242 | _buttons = 0;
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| 243 | move(0,0,0);
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| 244 | }
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| 245 |
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| 246 | void Mouse_::move(signed char x, signed char y, signed char wheel)
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| 247 | {
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| 248 | uint8_t m[4];
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| 249 | m[0] = _buttons;
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| 250 | m[1] = x;
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| 251 | m[2] = y;
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| 252 | m[3] = wheel;
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| 253 | HID_SendReport(1,m,4);
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| 254 | }
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| 255 |
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| 256 | void Mouse_::buttons(uint8_t b)
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| 257 | {
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| 258 | if (b != _buttons)
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| 259 | {
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| 260 | _buttons = b;
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| 261 | move(0,0,0);
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| 262 | }
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| 263 | }
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| 264 |
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| 265 | void Mouse_::press(uint8_t b)
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| 266 | {
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| 267 | buttons(_buttons | b);
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| 268 | }
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| 269 |
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| 270 | void Mouse_::release(uint8_t b)
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| 271 | {
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| 272 | buttons(_buttons & ~b);
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| 273 | }
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| 274 |
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| 275 | bool Mouse_::isPressed(uint8_t b)
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| 276 | {
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| 277 | if ((b & _buttons) > 0)
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| 278 | return true;
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| 279 | return false;
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| 280 | }
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| 281 |
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| 282 | //================================================================================
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| 283 | //================================================================================
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| 284 | // Keyboard
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| 285 |
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| 286 | Keyboard_::Keyboard_(void)
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| 287 | {
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| 288 | }
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| 289 |
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| 290 | void Keyboard_::begin(void)
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| 291 | {
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| 292 | }
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| 293 |
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| 294 | void Keyboard_::end(void)
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| 295 | {
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| 296 | }
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| 297 |
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| 298 | void Keyboard_::sendReport(KeyReport* keys)
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| 299 | {
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| 300 | HID_SendReport(2,keys,sizeof(KeyReport));
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| 301 | }
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| 302 |
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| 303 | #define SHIFT 0x80
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| 304 | extern const uint8_t _asciimap[128] =
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| 305 | {
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| 306 | 0x00, // NUL
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| 307 | 0x00, // SOH
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| 308 | 0x00, // STX
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| 309 | 0x00, // ETX
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| 310 | 0x00, // EOT
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| 311 | 0x00, // ENQ
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| 312 | 0x00, // ACK
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| 313 | 0x00, // BEL
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| 314 | 0x2a, // BS Backspace
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| 315 | 0x2b, // TAB Tab
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| 316 | 0x28, // LF Enter
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| 317 | 0x00, // VT
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| 318 | 0x00, // FF
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| 319 | 0x00, // CR
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| 320 | 0x00, // SO
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| 321 | 0x00, // SI
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| 322 | 0x00, // DEL
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| 323 | 0x00, // DC1
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| 324 | 0x00, // DC2
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| 325 | 0x00, // DC3
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| 326 | 0x00, // DC4
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| 327 | 0x00, // NAK
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| 328 | 0x00, // SYN
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| 329 | 0x00, // ETB
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| 330 | 0x00, // CAN
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| 331 | 0x00, // EM
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| 332 | 0x00, // SUB
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| 333 | 0x00, // ESC
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| 334 | 0x00, // FS
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| 335 | 0x00, // GS
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| 336 | 0x00, // RS
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| 337 | 0x00, // US
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| 338 |
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| 339 | 0x2c, // ' '
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| 340 | 0x1e|SHIFT, // !
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| 341 | 0x34|SHIFT, // "
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| 342 | 0x20|SHIFT, // #
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| 343 | 0x21|SHIFT, // $
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| 344 | 0x22|SHIFT, // %
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| 345 | 0x24|SHIFT, // &
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| 346 | 0x34, // '
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| 347 | 0x26|SHIFT, // (
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| 348 | 0x27|SHIFT, // )
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| 349 | 0x25|SHIFT, // *
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| 350 | 0x2e|SHIFT, // +
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| 351 | 0x36, // ,
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| 352 | 0x2d, // -
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| 353 | 0x37, // .
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| 354 | 0x38, // /
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| 355 | 0x27, // 0
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| 356 | 0x1e, // 1
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| 357 | 0x1f, // 2
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| 358 | 0x20, // 3
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| 359 | 0x21, // 4
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| 360 | 0x22, // 5
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| 361 | 0x23, // 6
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| 362 | 0x24, // 7
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| 363 | 0x25, // 8
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| 364 | 0x26, // 9
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| 365 | 0x33|SHIFT, // :
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| 366 | 0x33, // ;
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| 367 | 0x36|SHIFT, // <
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| 368 | 0x2e, // =
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| 369 | 0x37|SHIFT, // >
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| 370 | 0x38|SHIFT, // ?
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| 371 | 0x1f|SHIFT, // @
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| 372 | 0x04|SHIFT, // A
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| 373 | 0x05|SHIFT, // B
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| 374 | 0x06|SHIFT, // C
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| 375 | 0x07|SHIFT, // D
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| 376 | 0x08|SHIFT, // E
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| 377 | 0x09|SHIFT, // F
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| 378 | 0x0a|SHIFT, // G
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| 379 | 0x0b|SHIFT, // H
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| 380 | 0x0c|SHIFT, // I
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| 381 | 0x0d|SHIFT, // J
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| 382 | 0x0e|SHIFT, // K
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| 383 | 0x0f|SHIFT, // L
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| 384 | 0x10|SHIFT, // M
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| 385 | 0x11|SHIFT, // N
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| 386 | 0x12|SHIFT, // O
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| 387 | 0x13|SHIFT, // P
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| 388 | 0x14|SHIFT, // Q
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| 389 | 0x15|SHIFT, // R
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| 390 | 0x16|SHIFT, // S
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| 391 | 0x17|SHIFT, // T
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| 392 | 0x18|SHIFT, // U
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| 393 | 0x19|SHIFT, // V
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| 394 | 0x1a|SHIFT, // W
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| 395 | 0x1b|SHIFT, // X
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| 396 | 0x1c|SHIFT, // Y
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| 397 | 0x1d|SHIFT, // Z
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| 398 | 0x2f, // [
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| 399 | 0x31, // bslash
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| 400 | 0x30, // ]
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| 401 | 0x23|SHIFT, // ^
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| 402 | 0x2d|SHIFT, // _
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| 403 | 0x35, // `
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| 404 | 0x04, // a
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| 405 | 0x05, // b
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| 406 | 0x06, // c
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| 407 | 0x07, // d
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| 408 | 0x08, // e
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| 409 | 0x09, // f
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| 410 | 0x0a, // g
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| 411 | 0x0b, // h
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| 412 | 0x0c, // i
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| 413 | 0x0d, // j
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| 414 | 0x0e, // k
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| 415 | 0x0f, // l
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| 416 | 0x10, // m
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| 417 | 0x11, // n
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| 418 | 0x12, // o
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| 419 | 0x13, // p
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| 420 | 0x14, // q
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| 421 | 0x15, // r
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| 422 | 0x16, // s
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| 423 | 0x17, // t
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| 424 | 0x18, // u
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| 425 | 0x19, // v
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| 426 | 0x1a, // w
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| 427 | 0x1b, // x
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| 428 | 0x1c, // y
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| 429 | 0x1d, // z
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| 430 | 0x2f|SHIFT, //
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| 431 | 0x31|SHIFT, // |
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| 432 | 0x30|SHIFT, // }
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| 433 | 0x35|SHIFT, // ~
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| 434 | 0 // DEL
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| 435 | } ;
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| 436 |
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| 437 | // press() adds the specified key (printing, non-printing, or modifier)
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| 438 | // to the persistent key report and sends the report. Because of the way
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| 439 | // USB HID works, the host acts like the key remains pressed until we
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| 440 | // call release(), releaseAll(), or otherwise clear the report and resend.
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| 441 | size_t Keyboard_::press(uint8_t k)
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| 442 | {
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| 443 | uint8_t i;
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| 444 | if (k >= 136) { // it's a non-printing key (not a modifier)
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| 445 | k = k - 136;
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| 446 | } else if (k >= 128) { // it's a modifier key
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| 447 | _keyReport.modifiers |= (1<<(k-128));
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| 448 | k = 0;
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| 449 | } else { // it's a printing key
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| 450 | k = _asciimap[k];
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| 451 | if (!k) {
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| 452 | setWriteError();
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| 453 | return 0;
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| 454 | }
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| 455 | if (k & 0x80) { // it's a capital letter or other character reached with shift
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| 456 | _keyReport.modifiers |= 0x02; // the left shift modifier
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| 457 | k &= 0x7F;
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| 458 | }
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| 459 | }
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| 460 |
|
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| 461 | // Add k to the key report only if it's not already present
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| 462 | // and if there is an empty slot.
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| 463 | if (_keyReport.keys[0] != k && _keyReport.keys[1] != k &&
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| 464 | _keyReport.keys[2] != k && _keyReport.keys[3] != k &&
|
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| 465 | _keyReport.keys[4] != k && _keyReport.keys[5] != k) {
|
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| 466 |
|
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| 467 | for (i=0; i<6; i++) {
|
---|
| 468 | if (_keyReport.keys[i] == 0x00) {
|
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| 469 | _keyReport.keys[i] = k;
|
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| 470 | break;
|
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| 471 | }
|
---|
| 472 | }
|
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| 473 | if (i == 6) {
|
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| 474 | setWriteError();
|
---|
| 475 | return 0;
|
---|
| 476 | }
|
---|
| 477 | }
|
---|
| 478 | sendReport(&_keyReport);
|
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| 479 | return 1;
|
---|
| 480 | }
|
---|
| 481 |
|
---|
| 482 | // release() takes the specified key out of the persistent key report and
|
---|
| 483 | // sends the report. This tells the OS the key is no longer pressed and that
|
---|
| 484 | // it shouldn't be repeated any more.
|
---|
| 485 |
|
---|
| 486 | size_t Keyboard_::release(uint8_t k)
|
---|
| 487 | {
|
---|
| 488 | uint8_t i;
|
---|
| 489 | if (k >= 136) { // it's a non-printing key (not a modifier)
|
---|
| 490 | k = k - 136;
|
---|
| 491 | } else if (k >= 128) { // it's a modifier key
|
---|
| 492 | _keyReport.modifiers &= ~(1<<(k-128));
|
---|
| 493 | k = 0;
|
---|
| 494 | } else { // it's a printing key
|
---|
| 495 | k = _asciimap[k];
|
---|
| 496 | if (!k) {
|
---|
| 497 | return 0;
|
---|
| 498 | }
|
---|
| 499 | if (k & 0x80) { // it's a capital letter or other character reached with shift
|
---|
| 500 | _keyReport.modifiers &= ~(0x02); // the left shift modifier
|
---|
| 501 | k &= 0x7F;
|
---|
| 502 | }
|
---|
| 503 | }
|
---|
| 504 |
|
---|
| 505 | // Test the key report to see if k is present. Clear it if it exists.
|
---|
| 506 | // Check all positions in case the key is present more than once (which it shouldn't be)
|
---|
| 507 | for (i=0; i<6; i++) {
|
---|
| 508 | if (0 != k && _keyReport.keys[i] == k) {
|
---|
| 509 | _keyReport.keys[i] = 0x00;
|
---|
| 510 | }
|
---|
| 511 | }
|
---|
| 512 |
|
---|
| 513 | sendReport(&_keyReport);
|
---|
| 514 | return 1;
|
---|
| 515 | }
|
---|
| 516 |
|
---|
| 517 | void Keyboard_::releaseAll(void)
|
---|
| 518 | {
|
---|
| 519 | _keyReport.keys[0] = 0;
|
---|
| 520 | _keyReport.keys[1] = 0;
|
---|
| 521 | _keyReport.keys[2] = 0;
|
---|
| 522 | _keyReport.keys[3] = 0;
|
---|
| 523 | _keyReport.keys[4] = 0;
|
---|
| 524 | _keyReport.keys[5] = 0;
|
---|
| 525 | _keyReport.modifiers = 0;
|
---|
| 526 | sendReport(&_keyReport);
|
---|
| 527 | }
|
---|
| 528 |
|
---|
| 529 | size_t Keyboard_::write(uint8_t c)
|
---|
| 530 | {
|
---|
| 531 | uint8_t p = 0;
|
---|
| 532 |
|
---|
| 533 | p = press(c); // Keydown
|
---|
| 534 | release(c); // Keyup
|
---|
| 535 |
|
---|
| 536 | return (p); // Just return the result of press() since release() almost always returns 1
|
---|
| 537 | }
|
---|
| 538 |
|
---|
| 539 | #endif
|
---|