[4b06930] | 1 | #include <avr/io.h>
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| 2 | #include <avr/interrupt.h>
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| 3 | #include <avr/wdt.h>
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| 4 | #include <avr/pgmspace.h>
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| 5 | #include <util/delay.h>
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| 6 |
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| 7 | #include <string.h>
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| 8 | #include <stdbool.h>
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| 9 |
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| 10 | #include "amiga_keyboard/amiga_keyboard.h"
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| 11 | #include "usbdrv/usbdrv.h"
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| 12 | #include "keycodes.h"
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| 13 |
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| 14 | #define LEDSWAP PORTD ^= (1<<PD6)
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| 15 | #define LEDON PORTD |= 1<<PD6
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| 16 | #define LEDOFF PORTD &= ~(1<<PD6)
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| 17 |
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| 18 | static uint8_t pressingCaps = 0;
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| 19 |
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| 20 | const uint8_t PROGMEM keymatrix[0x70] = {
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| 21 | // 0 1 2 3 4 5 6 7 8 9 A B C D E F
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| 22 | KEY_grave, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, KEY_0, KEY_minus, KEY_equals, KEY_F11, KEY_Reserved, KEY_KP0, //0
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| 23 | KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_U, KEY_I, KEY_O, KEY_P, KEY_lbracket, KEY_rbracket, KEY_Reserved, KEY_KP1, KEY_KP2, KEY_KP3, //1
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| 24 | KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_J, KEY_K, KEY_L, KEY_semicolon, KEY_apostroph,KEY_hash, KEY_Reserved, KEY_KP4, KEY_KP5, KEY_KP6, //2
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| 25 | KEY_Euro, KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B, KEY_N, KEY_M, KEY_comma, KEY_dot, KEY_slash, KEY_Reserved, KEY_KPcomma, KEY_KP7, KEY_KP8, KEY_KP9, //3
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| 26 | KEY_Spacebar,KEY_DELETE, KEY_Tab, KEY_KPenter, KEY_Return,KEY_ESCAPE,KEY_DeleteForward,KEY_Reserved,KEY_Reserved,KEY_Reserved, KEY_KPminus, KEY_Reserved, KEY_UpArrow, KEY_DownArrow, KEY_RightArrow,KEY_LeftArrow,//4
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| 27 | KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_KPLParen, KEY_KPRParen, KEY_KPslash, KEY_KPasterisk,KEY_KPplus, KEY_Help, //5
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| 28 | KEY_Reserved,KEY_Reserved,KEY_capslock,KEY_Reserved,KEY_Reserved,KEY_Reserved,KEY_Reserved, KEY_Reserved,KEY_Reserved,KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_Reserved, KEY_Reserved, //6
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| 29 | };
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| 30 |
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| 31 | /**
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| 32 | * The modmatrix-array contains positions of the modifier-keys in the matrix.
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| 33 | * It is built in the same way as the keymatrix-array.
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| 34 | * \sa keymatrix
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| 35 | */
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| 36 | const uint8_t PROGMEM modmatrix[8] = { // contains positions of modifiers in the matrix
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| 37 | // 0 1 2 3 4 5 6 7
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| 38 | MOD_SHIFT_LEFT,MOD_SHIFT_RIGHT,MOD_NONE,MOD_CONTROL_LEFT,MOD_ALT_LEFT,MOD_ALT_RIGHT, MOD_GUI_LEFT, MOD_GUI_RIGHT,
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| 39 | };
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| 40 |
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| 41 | static uint8_t idleRate;
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| 42 | static uint8_t reportIndex = 2;
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| 43 | static uint8_t reportBuffer[8];
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| 44 |
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| 45 | void fillReportBuffer(uint8_t key_code) {
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| 46 | uint8_t key, modifier;
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| 47 | key = pgm_read_byte(&keymatrix[key_code]);
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| 48 | if (key_code >= 0x60 && key_code < 0x68)
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| 49 | modifier = pgm_read_byte(&modmatrix[key_code - 0x60]);
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| 50 | else
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| 51 | modifier = MOD_NONE;
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| 52 |
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| 53 | if (key != KEY_Reserved && reportIndex < 8) {
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| 54 | reportBuffer[reportIndex] = key; // set next available entry
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| 55 | reportIndex++;
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| 56 | if (key == KEY_capslock)
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| 57 | pressingCaps = 1;
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| 58 | }
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| 59 | reportBuffer[0] |= modifier;
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| 60 | }
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| 61 |
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| 62 |
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| 63 | void emptyReportBuffer(uint8_t key_code) {
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| 64 |
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| 65 | uint8_t key, modifier;
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| 66 | uint8_t i;
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| 67 | key = pgm_read_byte(&keymatrix[key_code]);
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| 68 | if (key_code >= 0x60 && key_code < 0x68)
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| 69 | modifier = pgm_read_byte(&modmatrix[key_code - 0x60]);
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| 70 | else
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| 71 | modifier = MOD_NONE;
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| 72 |
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| 73 | if (key == KEY_capslock) {
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| 74 | if (reportIndex < 8) {
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| 75 | reportBuffer[reportIndex] = key; // set next available entry
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| 76 | reportIndex++;
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| 77 | pressingCaps = 1;
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| 78 | }
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| 79 | } else if (key != KEY_Reserved) {
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| 80 | for (i = 2; i < reportIndex; i++) {
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| 81 | if (reportBuffer[i] == key) {
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| 82 | for (; i < 7; i++)
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| 83 | reportBuffer[i] = reportBuffer[i+1];
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| 84 | reportBuffer[7] = 0;
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| 85 | reportIndex--;
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| 86 | }
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| 87 | }
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| 88 | }
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| 89 | reportBuffer[0] &= ~modifier;
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| 90 | }
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| 91 |
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| 92 |
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| 93 | /*
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| 94 | void usbSendReport(uint8_t mode, uint8_t key) {
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| 95 | // buffer for HID reports. we use a private one, so nobody gets disturbed
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| 96 | uint8_t repBuffer[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
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| 97 | repBuffer[0] = mode;
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| 98 | repBuffer[2] = key;
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| 99 | while (!usbInterruptIsReady()); // wait
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| 100 | usbSetInterrupt(repBuffer, sizeof(repBuffer)); // send
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| 101 | }
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| 102 | */
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| 103 |
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| 104 | int main() {
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| 105 | uint8_t idleCounter = 0;
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| 106 | uint8_t updateNeeded = 0;
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| 107 | int capsDelay = 16;
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| 108 |
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| 109 | wdt_enable(WDTO_2S);
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| 110 | // configure timer 0 for a rate of 16M/(256 * 256) = ~244Hz
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| 111 | TCCR0 = 4; // timer 0 prescaler: 256
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| 112 |
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| 113 | //debug LED - output
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| 114 | DDRD |= (1<<PD6);
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| 115 |
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| 116 | // Keyboard
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| 117 | uint8_t key_code = 255;
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| 118 | memset(reportBuffer, 0, sizeof(reportBuffer)); // clear report buffer
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| 119 |
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| 120 | // USB
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| 121 | usbInit();
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| 122 | ak_init_keyboard();
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| 123 | sei();
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| 124 | bool doReport = false;
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| 125 | bool doRelease = false;
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| 126 |
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| 127 | while(1) {
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| 128 | wdt_reset();
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| 129 | usbPoll();
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| 130 |
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| 131 | updateNeeded = char_waiting;
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| 132 |
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| 133 | if (char_waiting) {
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| 134 | key_code = ak_read_scancode();
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| 135 | // if an update is needed, send the report
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| 136 | if ((key_code & 1) == 0) {
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| 137 | fillReportBuffer(key_code>>1);
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| 138 | LEDON;
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| 139 | doReport = true;
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| 140 | } else {
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| 141 | emptyReportBuffer(key_code>>1);
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| 142 | doRelease = true;
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| 143 | }
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| 144 | }
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| 145 |
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| 146 | if (doReport && usbInterruptIsReady()) {
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| 147 | usbSetInterrupt(reportBuffer, sizeof(reportBuffer));
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| 148 | LEDOFF;
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| 149 | doReport = false;
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| 150 | }
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| 151 |
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| 152 |
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| 153 | // check timer if we need periodic reports
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| 154 | if (TIFR & (1 << TOV0)) {
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| 155 | TIFR = (1 << TOV0); // reset flag
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| 156 |
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| 157 | if (pressingCaps) {
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| 158 | if (--capsDelay == 0) {
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| 159 | capsDelay = 16;
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| 160 | pressingCaps = 0;
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| 161 |
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| 162 | int i;
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| 163 | for (i = 2; i < reportIndex; i++) {
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| 164 | if (reportBuffer[i] == KEY_capslock) {
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| 165 | for (; i < 7; i++)
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| 166 | reportBuffer[i] = reportBuffer[i+1];
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| 167 | reportBuffer[7] = 0;
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| 168 | reportIndex--;
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| 169 | }
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| 170 | }
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| 171 | }
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| 172 | }
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| 173 |
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| 174 | ++idleCounter;
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| 175 | if(idleCounter > 4){ // yes, but not yet
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| 176 | idleCounter -= 5; // 22ms in units of 4ms
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| 177 | } else { // yes, it is time now
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| 178 | idleCounter = idleRate;
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| 179 | /*
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| 180 | if (pressingCaps) {
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| 181 | emptyReportBuffer(0x62);
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| 182 | pressingCaps = 0;
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| 183 | }
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| 184 | */
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| 185 | if (doRelease && usbInterruptIsReady()) {
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| 186 | usbSetInterrupt(reportBuffer, sizeof(reportBuffer));
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| 187 | doRelease = false;
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| 188 | }
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| 189 | }
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| 190 | }
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| 191 | }
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| 192 |
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| 193 | return 0;
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| 194 | }
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| 195 |
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| 196 | static uint8_t protocolVer = 1;
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| 197 | uint8_t expectReport = 0;
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| 198 |
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| 199 | #define LED_NUM 0x01 ///< num LED on a boot-protocol keyboard
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| 200 | #define LED_CAPS 0x02 ///< caps LED on a boot-protocol keyboard
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| 201 | #define LED_SCROLL 0x04 ///< scroll LED on a boot-protocol keyboard
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| 202 | #define LED_COMPOSE 0x08 ///< compose LED on a boot-protocol keyboard
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| 203 | #define LED_KANA 0x10 ///< kana LED on a boot-protocol keyboard
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| 204 | uint8_t LEDstate = 0; ///< current state of the LEDs
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| 205 |
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| 206 |
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| 207 | char PROGMEM usbHidReportDescriptor[USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH] = {
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| 208 | 0x05, 0x01, // USAGE_PAGE (Generic Desktop)
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| 209 | 0x09, 0x06, // USAGE (Keyboard)
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| 210 | 0xa1, 0x01, // COLLECTION (Application)
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| 211 | 0x05, 0x07, // USAGE_PAGE (Keyboard)
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| 212 | 0x19, 0xe0, // USAGE_MINIMUM (Keyboard LeftControl)
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| 213 | 0x29, 0xe7, // USAGE_MAXIMUM (Keyboard Right GUI)
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| 214 | 0x15, 0x00, // LOGICAL_MINIMUM (0)
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| 215 | 0x25, 0x01, // LOGICAL_MAXIMUM (1)
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| 216 | 0x75, 0x01, // REPORT_SIZE (1)
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| 217 | 0x95, 0x08, // REPORT_COUNT (8)
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| 218 | 0x81, 0x02, // INPUT (Data,Var,Abs)
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| 219 | 0x95, 0x01, // REPORT_COUNT (1)
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| 220 | 0x75, 0x08, // REPORT_SIZE (8)
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| 221 | 0x81, 0x03, // INPUT (Cnst,Var,Abs)
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| 222 | 0x95, 0x05, // REPORT_COUNT (5)
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| 223 | 0x75, 0x01, // REPORT_SIZE (1)
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| 224 | 0x05, 0x08, // USAGE_PAGE (LEDs)
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| 225 | 0x19, 0x01, // USAGE_MINIMUM (Num Lock)
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| 226 | 0x29, 0x05, // USAGE_MAXIMUM (Kana)
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| 227 | 0x91, 0x02, // OUTPUT (Data,Var,Abs)
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| 228 | 0x95, 0x01, // REPORT_COUNT (1)
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| 229 | 0x75, 0x03, // REPORT_SIZE (3)
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| 230 | 0x91, 0x03, // OUTPUT (Cnst,Var,Abs)
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| 231 | 0x95, 0x06, // REPORT_COUNT (6)
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| 232 | 0x75, 0x08, // REPORT_SIZE (8)
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| 233 | 0x15, 0x00, // LOGICAL_MINIMUM (0)
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| 234 | 0x25, 0x65, // LOGICAL_MAXIMUM (101)
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| 235 | 0x05, 0x07, // USAGE_PAGE (Keyboard)
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| 236 | 0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated))
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| 237 | 0x29, 0x65, // USAGE_MAXIMUM (Keyboard Application)
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| 238 | 0x81, 0x00, // INPUT (Data,Ary,Abs)
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| 239 | 0xc0 // END_COLLECTION
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| 240 | };
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| 241 |
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| 242 |
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| 243 |
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| 244 |
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| 245 | uint8_t usbFunctionSetup(uint8_t data[8]) {
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| 246 | usbRequest_t *rq = (void *)data;
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| 247 | usbMsgPtr = reportBuffer;
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| 248 | if ((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS) {
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| 249 | // class request type
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| 250 | if (rq->bRequest == USBRQ_HID_GET_REPORT) {
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| 251 | // wValue: ReportType (highbyte), ReportID (lowbyte)
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| 252 | // we only have one report type, so don't look at wValue
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| 253 | return sizeof(reportBuffer);
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| 254 | } else if (rq->bRequest == USBRQ_HID_SET_REPORT) {
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| 255 | if (rq->wLength.word == 1) {
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| 256 | // We expect one byte reports
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| 257 | expectReport = 1;
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| 258 | return 0xff; // Call usbFunctionWrite with data
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| 259 | }
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| 260 | } else if (rq->bRequest == USBRQ_HID_GET_IDLE) {
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| 261 | usbMsgPtr = &idleRate;
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| 262 | return 1;
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| 263 | } else if (rq->bRequest == USBRQ_HID_SET_IDLE) {
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| 264 | idleRate = rq->wValue.bytes[1];
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| 265 | } else if (rq->bRequest == USBRQ_HID_GET_PROTOCOL) {
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| 266 | if (rq->wValue.bytes[1] < 1) {
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| 267 | protocolVer = rq->wValue.bytes[1];
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| 268 | }
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| 269 | } else if(rq->bRequest == USBRQ_HID_SET_PROTOCOL) {
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| 270 | usbMsgPtr = &protocolVer;
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| 271 | return 1;
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| 272 | }
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| 273 | } else {
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| 274 | // no vendor specific requests implemented
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| 275 | }
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| 276 | return 0;
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| 277 | }
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| 278 |
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| 279 | /**
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| 280 | * The write function is called when LEDs should be set. Normally, we get only
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| 281 | * one byte that contains info about the LED states.
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| 282 | * \param data pointer to received data
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| 283 | * \param len number ob bytes received
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| 284 | * \return 0x01
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| 285 | */
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| 286 | uint8_t usbFunctionWrite(uchar *data, uchar len) {
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| 287 | if (expectReport && (len == 1)) {
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| 288 | LEDstate = data[0]; // Get the state of all 5 LEDs
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| 289 | /* TODO
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| 290 | if (LEDstate & LED_NUM) { // light up caps lock
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| 291 | PORTLEDS &= ~(1 << LEDNUM);
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| 292 | } else {
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| 293 | PORTLEDS |= (1 << LEDNUM);
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| 294 | }
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| 295 | if (LEDstate & LED_CAPS) { // light up caps lock
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| 296 | PORTLEDS &= ~(1 << LEDCAPS);
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| 297 | } else {
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| 298 | PORTLEDS |= (1 << LEDCAPS);
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| 299 | }
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| 300 | if (LEDstate & LED_SCROLL) { // light up caps lock
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| 301 | PORTLEDS &= ~(1 << LEDSCROLL);
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| 302 | } else {
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| 303 | PORTLEDS |= (1 << LEDSCROLL);
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| 304 | }
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| 305 | */
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| 306 | }
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| 307 | expectReport = 0;
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| 308 | return 0x01;
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| 309 | }
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| 310 |
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