From 03c7f96581c32efb5cc23ffb55939edbd8b59727 Mon Sep 17 00:00:00 2001
From: helei <helei@nky.com>
Date: Tue, 18 Aug 2026 16:13:38 +0800
Subject: [PATCH] =?UTF-8?q?V1.5:=20=E4=BF=AE=E5=A4=8DOTA=E6=89=BF=E8=BD=BD?=
 =?UTF-8?q?=E6=BF=80=E6=B4=BB=E6=A6=82=E7=8E=87=E6=80=A7=E5=A4=B1=E8=B4=A5?=
 =?UTF-8?q?(SAPBR=E5=89=8D=E5=A2=9E=E5=8A=A0=E7=AD=89=E5=BE=85=E7=BD=91?=
 =?UTF-8?q?=E7=BB=9C=E9=99=84=E7=9D=80cat=5Fwait=5Fcgatt=5Fattached(30))?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 V1.5/STM32F103_App1/HardWare/CAR/air780e.c | 5 +++++
 V1.5/版本说明.md                       | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/V1.5/STM32F103_App1/HardWare/CAR/air780e.c b/V1.5/STM32F103_App1/HardWare/CAR/air780e.c
index 9556486..9f315ca 100644
--- a/V1.5/STM32F103_App1/HardWare/CAR/air780e.c
+++ b/V1.5/STM32F103_App1/HardWare/CAR/air780e.c
@@ -583,6 +583,11 @@ static void air780e_trigger_ota_body(const char *host, int port, const char *pat
     if(r==0)return;
     if(air780e_send_at("AT+CSQ","OK",3000)!=0)return;
 
+    /* ģ�� OTA ��ڸո�λ���������ȵ��������¸���(CATT=1)�ټ�����أ�
+     * ����ע����(���ź�/������)ʱ SAPBR=1,1 ��ʧ��(S3) */
+    log_info("> OTA: �ȴ����總��...");
+    if (cat_wait_cgatt_attached(30) != 0) { log_warn("> OTA: ���ų�ʱ"); return; }
+
     log_info("> SAPBR...");
     if(air780e_send_at("AT+SAPBR=3,1,\"CONTYPE\",\"GPRS\"","OK",3000)!=0){log_info("> S1");return;}
     if(air780e_send_at("AT+SAPBR=3,1,\"APN\",\"\"","OK",3000)!=0){log_info("> S2");return;}
diff --git a/V1.5/版本说明.md b/V1.5/版本说明.md
index 5bb0c52..75b7d03 100644
--- a/V1.5/版本说明.md
+++ b/V1.5/版本说明.md
@@ -145,3 +145,5 @@
 - 修复 4G OTA 失败后"假死"（平台不可控/无法再 OTA）：OTA 入口会复位 4G 模组，MQTT 已断但
   ready 标志未清，S1~S4 等前置失败退出后设备假在线。现改为任何 OTA 失败路径退出后
   标记原因(RSN_OTA_FAIL "OTA失败中止")并主动复位，重启走干净 4G 初始化恢复联网
+- 修复 OTA 的 SAPBR 激活承载概率性失败：OTA 入口复位模组后未等网络重新附着(CATT)就
+  激活承载，注册慢时必失败。现 CSQ 后加 cat_wait_cgatt_attached(30)，附着成功才走 SAPBR