From 1b76f83e3b3ef97a71b57cbc1cdf39ec14a10051 Mon Sep 17 00:00:00 2001
From: byun <nulav@naver.com>
Date: Sun, 29 Mar 2026 18:43:01 +0000
Subject: [PATCH] =?UTF-8?q?=EC=8B=9C=EB=A6=AC=EC=96=BC=20=ED=95=9C?=
 =?UTF-8?q?=EA=B8=80=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

---
 serial_task.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/serial_task.cpp b/serial_task.cpp
index 494aec4..9401dc6 100644
--- a/serial_task.cpp
+++ b/serial_task.cpp
@@ -198,8 +198,9 @@ void serialRxTask(void *param) {
           if (linePos > 0) flushLineToQueues(lineBuf, linePos);
           continue;
         }
-        // Only accept printable ASCII (0x20~0x7E) and TAB (0x09)
-        if ((c >= 0x20 && c <= 0x7E) || c == '\t') {
+        // Accept printable ASCII + UTF-8 multibyte (한글 등)
+        // Skip only control chars (0x00~0x1F) except TAB
+        if (c >= 0x20 || c == '\t') {
           lineBuf[linePos++] = c;
         }
       }