From 7bf7e863ebb1a330d92abcb286644b22789579b5 Mon Sep 17 00:00:00 2001
From: Paul Mathieu <paul@ponteilla.net>
Date: Wed, 24 Sep 2025 00:41:30 +0200
Subject: [PATCH] kbd: now with ctrl-alt-del

---
 arduino/kbd/kbd.ino | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arduino/kbd/kbd.ino b/arduino/kbd/kbd.ino
index db93ab7..326cf60 100644
--- a/arduino/kbd/kbd.ino
+++ b/arduino/kbd/kbd.ino
@@ -119,6 +119,22 @@ void sendShiftCode(int code) {
   sendCode(42 | 0x80);
 }
 
+void sendCtrlAltDel() {
+  sendCode(0x1d);  // ctrl
+  sendCode(0x38);  // alt
+  sendCode(0x53);  // del
+  sendCode(0x53 | 0x80);
+  sendCode(0x38 | 0x80);
+  sendCode(0x1d | 0x80);
+}
+
+void sendCtrlBreak() {
+  sendCode(0x1d);  // ctrl
+  sendCode(0x46);  // break
+  sendCode(0x46 | 0x80);
+  sendCode(0x1d | 0x80);
+}
+
 void sendAsciiChar(int c) {
   if (c >= 'a' && c <= 'z') {
     return sendNormalCode(kLetterCodes[c - 'a']);
@@ -160,6 +176,9 @@ void sendAsciiChar(int c) {
     case '<': return sendShiftCode(51);
     case '>': return sendShiftCode(52);
     case '?': return sendShiftCode(53);
+
+    case 0: return sendCtrlAltDel();
+    case 27: return sendCtrlBreak();  // escape
   }
 }