refactoring into multiple files, not tested on hardware

keyboard_input.h

@@ -0,0 +1,19 @@
+#ifndef KEYBOARD_INPUT_H
+#define KEYBOARD_INPUT_H
+
+#include "tusb.h"
+
+struct KeyEvent {
+    char ascii;
+    bool is_enter;
+    bool is_backspace;
+    bool is_printable;
+};
+
+/**
+ * Parses a raw HID keyboard report and returns true if a new key press was detected.
+ * The result is stored in the provided KeyEvent pointer.
+ */
+bool parse_keyboard_report(hid_keyboard_report_t const *report, KeyEvent* result);
+
+#endif // KEYBOARD_INPUT_H