From e7389b95fbbbfac447fc306df493ce26ae367c75 Mon Sep 17 00:00:00 2001
From: wangfq <wangfq@collectpublish.net>
Date: Thu, 13 Aug 2026 16:35:30 +0800
Subject: [PATCH] =?UTF-8?q?fix(vd960DBN):=20fault=5Fdiag=20=E6=97=A0?=
 =?UTF-8?q?=E6=9D=A1=E4=BB=B6=E6=89=93=E5=8D=B0=20marker=20=E2=80=94=20?=
 =?UTF-8?q?=E5=8D=A1=E6=AD=BB(=E9=9D=9EHardFault)=E4=B9=9F=E8=83=BD?=
 =?UTF-8?q?=E5=AE=9A=E4=BD=8D?=
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原只在 magic=0xFA57FA57 (HardFault) 时打印, 卡死/IWDG 复位时
marker 有值但 magic=0 → 轨迹丢失。改为:
- magic 有效 → 完整现场 (mcause/mepc/mtval/marker)
- marker!=0 且无 HardFault → 打印 no-hardfault + marker (卡死定位)
---
 vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/ch32v20x_it.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/ch32v20x_it.c b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/ch32v20x_it.c
index bbf4c0c..8429e31 100644
--- a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/ch32v20x_it.c
+++ b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/ch32v20x_it.c
@@ -59,6 +59,11 @@ void fault_diag_init(void)
               (unsigned long)g_fault_diag.mepc,
               (unsigned long)g_fault_diag.mtval,
               (unsigned long)g_fault_diag.marker);
+    } else if (g_fault_diag.marker != 0) {
+        /* 非 HardFault 复位 (IWDG 超时/卡死/掉电): marker 仍记录执行轨迹 */
+        PRINT("FAULT_DIAG: no-hardfault boot_cnt=%lu marker=0x%08lx (卡死/看门狗复位)\n",
+              (unsigned long)g_fault_diag.boot_cnt,
+              (unsigned long)g_fault_diag.marker);
     }
     /* 重置现场, boot_cnt 保留递增 */
     g_fault_diag.magic   = 0;