From 6043fb90b8fd3fbb47e2e13346d5ef32d4875b75 Mon Sep 17 00:00:00 2001
From: HalfSweet <halfsweet@halfsweet.cn>
Date: Thu, 28 Dec 2023 09:39:48 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E6=94=B9GPIO=E4=B8=AD=E7=9A=84?=
 =?UTF-8?q?=E4=BE=8B=E5=AD=90=E9=94=99=E8=AF=AF?=
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---
 docs/library/gpio.md | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/docs/library/gpio.md b/docs/library/gpio.md
index 74cb5f2..4193323 100644
--- a/docs/library/gpio.md
+++ b/docs/library/gpio.md
@@ -116,21 +116,22 @@ void detachInterrupt(uint32_t channel)
 ### GPIO 输入和输出模式
 
 ```cpp
-const auto LED = PB0;
+const auto ledPin = PB0;
 const auto BUTTON = PF4;
 
 uint8_t stateLED = 0;
 
 void setup() {
-    pinMode(LED, OUTPUT);
+    pinMode(ledPin, OUTPUT);
     pinMode(BUTTON,INPUT_PULLUP);
 }
 
 void loop() {
-   if(!digitalRead(BUTTON)){
-     stateLED = stateLED^1;
-    digitalWrite(LED,stateLED);
-  }
+   if(!digitalRead(BUTTON))
+    {
+        stateLED = stateLED^1;
+        digitalWrite(ledPin,stateLED);
+    }
 }
 ```