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 |
|
---|
467 | for (i=0; i<6; i++) {
|
---|
468 | if (_keyReport.keys[i] == 0x00) {
|
---|
469 | _keyReport.keys[i] = k;
|
---|
470 | break;
|
---|
471 | }
|
---|
472 | }
|
---|
473 | if (i == 6) {
|
---|
474 | setWriteError();
|
---|
475 | return 0;
|
---|
476 | }
|
---|
477 | }
|
---|
478 | sendReport(&_keyReport);
|
---|
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
|
---|