Adolfo Reyna
143 lines
4.6 KiB
C++
143 lines
4.6 KiB
C++
#include "keyboard_input.h"
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#include <stdio.h>
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static const uint8_t keycode2ascii[128][2] = {
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{0, 0}, /* 0x00 */
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{0, 0}, /* 0x01 */
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{0, 0}, /* 0x02 */
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{0, 0}, /* 0x03 */
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{'a', 'A'}, /* 0x04 */
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{'b', 'B'}, /* 0x05 */
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{'c', 'C'}, /* 0x06 */
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{'d', 'D'}, /* 0x07 */
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{'e', 'E'}, /* 0x08 */
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{'f', 'F'}, /* 0x09 */
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{'g', 'G'}, /* 0x0a */
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{'h', 'H'}, /* 0x0b */
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{'i', 'I'}, /* 0x0c */
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{'j', 'J'}, /* 0x0d */
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{'k', 'K'}, /* 0x0e */
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{'l', 'L'}, /* 0x0f */
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{'m', 'M'}, /* 0x10 */
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{'n', 'N'}, /* 0x11 */
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{'o', 'O'}, /* 0x12 */
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{'p', 'P'}, /* 0x13 */
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{'q', 'Q'}, /* 0x14 */
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{'r', 'R'}, /* 0x15 */
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{'s', 'S'}, /* 0x16 */
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{'t', 'T'}, /* 0x17 */
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{'u', 'U'}, /* 0x18 */
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{'v', 'V'}, /* 0x19 */
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{'w', 'W'}, /* 0x1a */
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{'x', 'X'}, /* 0x1b */
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{'y', 'Y'}, /* 0x1c */
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{'z', 'Z'}, /* 0x1d */
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{'1', '!'}, /* 0x1e */
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{'2', '@'}, /* 0x1f */
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{'3', '#'}, /* 0x20 */
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{'4', '$'}, /* 0x21 */
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{'5', '%'}, /* 0x22 */
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{'6', '^'}, /* 0x23 */
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{'7', '&'}, /* 0x24 */
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{'8', '*'}, /* 0x25 */
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{'9', '('}, /* 0x26 */
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{'0', ')'}, /* 0x27 */
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{'\r', '\r'}, /* 0x28 ENTER */
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{'\x1b', '\x1b'}, /* 0x29 ESCAPE */
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{'\b', '\b'}, /* 0x2a BACKSPACE */
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{'\t', '\t'}, /* 0x2b TAB */
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{' ', ' '}, /* 0x2c SPACE */
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{'-', '_'}, /* 0x2d MINUS */
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{'=', '+'}, /* 0x2e EQUAL */
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{'[', '{'}, /* 0x2f BRACKET_LEFT */
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{']', '}'}, /* 0x30 BRACKET_RIGHT */
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{'\\', '|'}, /* 0x31 BACKSLASH */
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{'#', '~'}, /* 0x32 EUROPE_1 */
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{';', ':'}, /* 0x33 SEMICOLON */
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{'\'', '\"'}, /* 0x34 APOSTROPHE */
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{'`', '~'}, /* 0x35 GRAVE */
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{',', '<'}, /* 0x36 COMMA */
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{'.', '>'}, /* 0x37 PERIOD */
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{'/', '?'}, /* 0x38 SLASH */
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{0, 0}, /* 0x39 CAPS_LOCK */
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{0, 0}, /* 0x3a F1 */
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{0, 0}, /* 0x3b F2 */
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{0, 0}, /* 0x3c F3 */
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{0, 0}, /* 0x3d F4 */
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{0, 0}, /* 0x3e F5 */
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{0, 0}, /* 0x3f F6 */
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{0, 0}, /* 0x40 F7 */
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{0, 0}, /* 0x41 F8 */
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{0, 0}, /* 0x42 F9 */
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{0, 0}, /* 0x43 F10 */
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{0, 0}, /* 0x44 F11 */
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{0, 0}, /* 0x45 F12 */
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{0, 0}, /* 0x46 PRINT_SCREEN */
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{0, 0}, /* 0x47 SCROLL_LOCK */
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{0, 0}, /* 0x48 PAUSE */
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{0, 0}, /* 0x49 INSERT */
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{0, 0}, /* 0x4a HOME */
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{0, 0}, /* 0x4b PAGE_UP */
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{0, 0}, /* 0x4c DELETE */
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{0, 0}, /* 0x4d END */
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{0, 0}, /* 0x4e PAGE_DOWN */
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{0, 0}, /* 0x4f RIGHT_ARROW */
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{0, 0}, /* 0x50 LEFT_ARROW */
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{0, 0}, /* 0x51 DOWN_ARROW */
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{0, 0}, /* 0x52 UP_ARROW */
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{0, 0}, /* 0x53 NUM_LOCK */
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{'/', '/'}, /* 0x54 KP_DIVIDE */
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{'*', '*'}, /* 0x55 KP_MULTIPLY */
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{'-', '-'}, /* 0x56 KP_MINUS */
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{'+', '+'}, /* 0x57 KP_PLUS */
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{'\r', '\r'}, /* 0x58 KP_ENTER */
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{'1', '1'}, /* 0x59 KP_1 */
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{'2', '2'}, /* 0x5a KP_2 */
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{'3', '3'}, /* 0x5b KP_3 */
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{'4', '4'}, /* 0x5c KP_4 */
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{'5', '5'}, /* 0x5d KP_5 */
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{'6', '6'}, /* 0x5e KP_6 */
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{'7', '7'}, /* 0x5f KP_7 */
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{'8', '8'}, /* 0x60 KP_8 */
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{'9', '9'}, /* 0x61 KP_9 */
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{'0', '0'}, /* 0x62 KP_0 */
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{'.', '.'}, /* 0x63 KP_DECIMAL */
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};
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static inline bool find_key_in_report(hid_keyboard_report_t const *report, uint8_t keycode) {
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for(uint8_t i=0; i<6; i++) {
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if (report->keycode[i] == keycode) return true;
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}
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return false;
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}
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bool parse_keyboard_report(hid_keyboard_report_t const *report, KeyEvent* result) {
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static hid_keyboard_report_t prev_report = { 0, 0, {0} };
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bool event_found = false;
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for(uint8_t i=0; i<6; i++) {
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if (report->keycode[i]) {
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if (find_key_in_report(&prev_report, report->keycode[i])) {
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// exist in previous report means the current key is holding
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} else {
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// not existed in previous report means the current key is pressed
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bool const is_shift = report->modifier & (KEYBOARD_MODIFIER_LEFTSHIFT | KEYBOARD_MODIFIER_RIGHTSHIFT);
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uint8_t ch = keycode2ascii[report->keycode[i]][is_shift ? 1 : 0];
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if (ch) {
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result->ascii = ch;
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result->is_enter = (ch == '\r' || ch == '\n');
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result->is_backspace = (ch == '\b' || ch == 127);
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result->is_printable = !result->is_enter && !result->is_backspace;
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event_found = true;
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// We only process one key event per report for simplicity in this refactor
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// Ideally we might want to queue them if multiple keys are pressed at once
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break;
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}
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}
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}
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}
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prev_report = *report;
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return event_found;
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}
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