From cce2107edbf7b9764a9665d6f36dced057114827 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=A8=E6=9F=90=E4=BA=BA?=
 <9324003+YJie_1998@user.noreply.gitee.com>
Date: Thu, 8 Jul 2021 10:05:13 +0000
Subject: [PATCH] update
 rt-thread-version/rt-thread-standard/programming-manual/device/pin/pin.md.

---
 .../rt-thread-standard/programming-manual/device/pin/pin.md     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rt-thread-version/rt-thread-standard/programming-manual/device/pin/pin.md b/rt-thread-version/rt-thread-standard/programming-manual/device/pin/pin.md
index 779fa48..cf717af 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/device/pin/pin.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/device/pin/pin.md
@@ -39,7 +39,7 @@ RT-Thread 提供的引脚编号需要和芯片的引脚号区分开来，它们
 使用 rt_pin_get() 获取引脚编号，如下获取 PF9 的引脚编号：
 
 ```c
-pin_number = rt_pin_get("F.9");
+pin_number = rt_pin_get("PF.9");
 ```
 
 #### 使用宏定义
-- 
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