From 716843e921f32b2699d4cb36f7ef6d3ca42b5081 Mon Sep 17 00:00:00 2001
From: a1012112796 <1012112796@qq.com>
Date: Tue, 1 Aug 2023 10:22:00 +0800
Subject: [PATCH] =?UTF-8?q?=E5=85=81=E8=AE=B8=20iap=20=E5=8D=87=E7=BA=A7?=
 =?UTF-8?q?=E4=B8=8D=E5=90=AB=20header=20=E7=9A=84=E6=99=AE=E9=80=9A?=
 =?UTF-8?q?=E5=9B=BA=E4=BB=B6?=
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Signed-off-by: a1012112796 <1012112796@qq.com>
---
 iap/iap.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/iap/iap.c b/iap/iap.c
index c4c2523..3a7c144 100644
--- a/iap/iap.c
+++ b/iap/iap.c
@@ -123,6 +123,7 @@ rt_err_t port_rx_ind(rt_device_t dev, rt_size_t size)
  * 作用 & 说明
  * - 记录固件对应硬件 & 版本信息
  * - 简便起见，不包含校验信息
+ * - 允许 iap 升级不含 header 的普通固件
  *
  * index   len      desc
  *   0      4       'XYFC'
@@ -137,14 +138,14 @@ static int _check_head(const rt_uint8_t *buf, rt_size_t len)
 {
     if (len < 8)
     {
-        return -1;
+        return 0;
     }
 
     for (int i = 0; i < sizeof(FIXED_HEAD); i++)
     {
         if (FIXED_HEAD[i] != buf[i])
         {
-            return -2;
+            return 0;
         }
     }