From e9eb89f203dd8a7e507503d8b6fed5c9fa171e82 Mon Sep 17 00:00:00 2001
From: jhchun <jh.chun@medithings.co.kr>
Date: Tue, 21 Apr 2026 10:51:02 +0900
Subject: [PATCH] =?UTF-8?q?DFU=20=EC=A7=84=EC=9E=85=20=EC=8B=9C=20?=
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- PREPARE 이벤트 시 타이머(메인, 배터리/온도) 중지 및 비동기 측정 중단 및 상태 리셋, Piezo 전원 차단
- 정리하지 않는 경우 Piezo TX 비정상 신호 출력/Flash 데이터 깨질 가능성 존재
---
 project/ble_peripheral/ble_app_bladder_patch/main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/project/ble_peripheral/ble_app_bladder_patch/main.c b/project/ble_peripheral/ble_app_bladder_patch/main.c
index 1956859..7fbcb21 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/main.c
+++ b/project/ble_peripheral/ble_app_bladder_patch/main.c
@@ -479,6 +479,10 @@ static void ble_dfu_evt_handler(ble_dfu_buttonless_evt_type_t event)
     {
         case BLE_DFU_EVT_BOOTLOADER_ENTER_PREPARE:
             DBG_PRINTF("[DFU] Prepare\r\n");
+            maa_async_abort();
+            dr_piezo_power_off();
+            battery_timer_stop();
+            main_timer_stop();
             break;
         case BLE_DFU_EVT_BOOTLOADER_ENTER:
             DBG_PRINTF("[DFU] Enter\r\n");