From 995520164de261b2536019b66a3d6c44fefc7a10 Mon Sep 17 00:00:00 2001
From: wangfq <wangfq@collectpublish.net>
Date: Fri, 26 Jun 2026 11:55:43 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E6=9C=89=E8=BD=A6=E6=97=B6=E6=A0=B9?=
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vd1_task_per_channel 判定有车 (loop_VD_FLAG=1) 时，
若 hold_time > 0 则设置 loop_VD_HOLD = 1，
使有限存在超时逻辑能够实际生效。
hold_time=0 (exist_mode=0) 时不设 VD_HOLD，保持无限制存在。
---
 vd960Loop/utilities/at32f421_freertos_demo/src/TaskLoop.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/vd960Loop/utilities/at32f421_freertos_demo/src/TaskLoop.c b/vd960Loop/utilities/at32f421_freertos_demo/src/TaskLoop.c
index 480de0c..784b83d 100644
--- a/vd960Loop/utilities/at32f421_freertos_demo/src/TaskLoop.c
+++ b/vd960Loop/utilities/at32f421_freertos_demo/src/TaskLoop.c
@@ -469,6 +469,9 @@ void vd1_task_per_channel(Loop154_Unit *unit)
 
             unit->loop_VD_FLAG = 1;
             unit->loop_FLAG_IN = 1;
+            if (unit->hold_time > 0) {
+                unit->loop_VD_HOLD = 1;
+            }
             at32_led_on(unit->loop_num);
 
             if (!unit->SET_SAFE) {