refactoring into multiple files, not tested on hardware

2025-12-09 18:41:03 -05:00
parent bc0e082b89
commit 47956bf64c
8 changed files with 552 additions and 439 deletions
--- a/keyboard_input.cpp
+++ b/keyboard_input.cpp
@@ -0,0 +1,142 @@
+#include "keyboard_input.h"
+#include <stdio.h>
+
+static const uint8_t keycode2ascii[128][2] =  {
+    {0, 0}, /* 0x00 */
+    {0, 0}, /* 0x01 */
+    {0, 0}, /* 0x02 */
+    {0, 0}, /* 0x03 */
+    {'a', 'A'}, /* 0x04 */
+    {'b', 'B'}, /* 0x05 */
+    {'c', 'C'}, /* 0x06 */
+    {'d', 'D'}, /* 0x07 */
+    {'e', 'E'}, /* 0x08 */
+    {'f', 'F'}, /* 0x09 */
+    {'g', 'G'}, /* 0x0a */
+    {'h', 'H'}, /* 0x0b */
+    {'i', 'I'}, /* 0x0c */
+    {'j', 'J'}, /* 0x0d */
+    {'k', 'K'}, /* 0x0e */
+    {'l', 'L'}, /* 0x0f */
+    {'m', 'M'}, /* 0x10 */
+    {'n', 'N'}, /* 0x11 */
+    {'o', 'O'}, /* 0x12 */
+    {'p', 'P'}, /* 0x13 */
+    {'q', 'Q'}, /* 0x14 */
+    {'r', 'R'}, /* 0x15 */
+    {'s', 'S'}, /* 0x16 */
+    {'t', 'T'}, /* 0x17 */
+    {'u', 'U'}, /* 0x18 */
+    {'v', 'V'}, /* 0x19 */
+    {'w', 'W'}, /* 0x1a */
+    {'x', 'X'}, /* 0x1b */
+    {'y', 'Y'}, /* 0x1c */
+    {'z', 'Z'}, /* 0x1d */
+    {'1', '!'}, /* 0x1e */
+    {'2', '@'}, /* 0x1f */
+    {'3', '#'}, /* 0x20 */
+    {'4', '$'}, /* 0x21 */
+    {'5', '%'}, /* 0x22 */
+    {'6', '^'}, /* 0x23 */
+    {'7', '&'}, /* 0x24 */
+    {'8', '*'}, /* 0x25 */
+    {'9', '('}, /* 0x26 */
+    {'0', ')'}, /* 0x27 */
+    {'\r', '\r'}, /* 0x28 ENTER */
+    {'\x1b', '\x1b'}, /* 0x29 ESCAPE */
+    {'\b', '\b'}, /* 0x2a BACKSPACE */
+    {'\t', '\t'}, /* 0x2b TAB */
+    {' ', ' '}, /* 0x2c SPACE */
+    {'-', '_'}, /* 0x2d MINUS */
+    {'=', '+'}, /* 0x2e EQUAL */
+    {'[', '{'}, /* 0x2f BRACKET_LEFT */
+    {']', '}'}, /* 0x30 BRACKET_RIGHT */
+    {'\\', '|'}, /* 0x31 BACKSLASH */
+    {'#', '~'}, /* 0x32 EUROPE_1 */
+    {';', ':'}, /* 0x33 SEMICOLON */
+    {'\'', '\"'}, /* 0x34 APOSTROPHE */
+    {'`', '~'}, /* 0x35 GRAVE */
+    {',', '<'}, /* 0x36 COMMA */
+    {'.', '>'}, /* 0x37 PERIOD */
+    {'/', '?'}, /* 0x38 SLASH */
+    {0, 0}, /* 0x39 CAPS_LOCK */
+    {0, 0}, /* 0x3a F1 */
+    {0, 0}, /* 0x3b F2 */
+    {0, 0}, /* 0x3c F3 */
+    {0, 0}, /* 0x3d F4 */
+    {0, 0}, /* 0x3e F5 */
+    {0, 0}, /* 0x3f F6 */
+    {0, 0}, /* 0x40 F7 */
+    {0, 0}, /* 0x41 F8 */
+    {0, 0}, /* 0x42 F9 */
+    {0, 0}, /* 0x43 F10 */
+    {0, 0}, /* 0x44 F11 */
+    {0, 0}, /* 0x45 F12 */
+    {0, 0}, /* 0x46 PRINT_SCREEN */
+    {0, 0}, /* 0x47 SCROLL_LOCK */
+    {0, 0}, /* 0x48 PAUSE */
+    {0, 0}, /* 0x49 INSERT */
+    {0, 0}, /* 0x4a HOME */
+    {0, 0}, /* 0x4b PAGE_UP */
+    {0, 0}, /* 0x4c DELETE */
+    {0, 0}, /* 0x4d END */
+    {0, 0}, /* 0x4e PAGE_DOWN */
+    {0, 0}, /* 0x4f RIGHT_ARROW */
+    {0, 0}, /* 0x50 LEFT_ARROW */
+    {0, 0}, /* 0x51 DOWN_ARROW */
+    {0, 0}, /* 0x52 UP_ARROW */
+    {0, 0}, /* 0x53 NUM_LOCK */
+    {'/', '/'}, /* 0x54 KP_DIVIDE */
+    {'*', '*'}, /* 0x55 KP_MULTIPLY */
+    {'-', '-'}, /* 0x56 KP_MINUS */
+    {'+', '+'}, /* 0x57 KP_PLUS */
+    {'\r', '\r'}, /* 0x58 KP_ENTER */
+    {'1', '1'}, /* 0x59 KP_1 */
+    {'2', '2'}, /* 0x5a KP_2 */
+    {'3', '3'}, /* 0x5b KP_3 */
+    {'4', '4'}, /* 0x5c KP_4 */
+    {'5', '5'}, /* 0x5d KP_5 */
+    {'6', '6'}, /* 0x5e KP_6 */
+    {'7', '7'}, /* 0x5f KP_7 */
+    {'8', '8'}, /* 0x60 KP_8 */
+    {'9', '9'}, /* 0x61 KP_9 */
+    {'0', '0'}, /* 0x62 KP_0 */
+    {'.', '.'}, /* 0x63 KP_DECIMAL */
+};
+
+static inline bool find_key_in_report(hid_keyboard_report_t const *report, uint8_t keycode) {
+    for(uint8_t i=0; i<6; i++) {
+        if (report->keycode[i] == keycode) return true;
+    }
+    return false;
+}
+
+bool parse_keyboard_report(hid_keyboard_report_t const *report, KeyEvent* result) {
+    static hid_keyboard_report_t prev_report = { 0, 0, {0} };
+    bool event_found = false;
+
+    for(uint8_t i=0; i<6; i++) {
+        if (report->keycode[i]) {
+            if (find_key_in_report(&prev_report, report->keycode[i])) {
+                // exist in previous report means the current key is holding
+            } else {
+                // not existed in previous report means the current key is pressed
+                bool const is_shift = report->modifier & (KEYBOARD_MODIFIER_LEFTSHIFT | KEYBOARD_MODIFIER_RIGHTSHIFT);
+                uint8_t ch = keycode2ascii[report->keycode[i]][is_shift ? 1 : 0];
+                
+                if (ch) {
+                    result->ascii = ch;
+                    result->is_enter = (ch == '\r' || ch == '\n');
+                    result->is_backspace = (ch == '\b' || ch == 127);
+                    result->is_printable = !result->is_enter && !result->is_backspace;
+                    event_found = true;
+                    // We only process one key event per report for simplicity in this refactor
+                    // Ideally we might want to queue them if multiple keys are pressed at once
+                    break; 
+                }
+            }
+        }
+    }
+    prev_report = *report;
+    return event_found;
+}