From a2517e4cb5f8c0ea4237221cde69ccfa2e476e80 Mon Sep 17 00:00:00 2001
From: XYX12306 <2669599387@qq.com>
Date: Mon, 8 Jun 2020 00:02:33 +0800
Subject: [PATCH] fixed the serious bug caused by the main function calling the
 key processing function and the system running error corrected the
 description of README.md file

---
 bsp/stm32/stm32f413-st-nucleo/README.md       |  4 +--
 .../stm32f413-st-nucleo/applications/main.c   | 30 ++-----------------
 2 files changed, 5 insertions(+), 29 deletions(-)

diff --git a/bsp/stm32/stm32f413-st-nucleo/README.md b/bsp/stm32/stm32f413-st-nucleo/README.md
index c10c01a879..5461ff7ba9 100644
--- a/bsp/stm32/stm32f413-st-nucleo/README.md
+++ b/bsp/stm32/stm32f413-st-nucleo/README.md
@@ -24,7 +24,7 @@
 
 - MCU：STM32F413ZH，主频 100MHz，1536KB FLASH ，320KB RAM
 - 常用外设
-  - LED：8个，user LED [SB2跳帽需连接](黄色，PB0，LD1；蓝色，PB7，LD2；红色，PB14，LD3), USB communication (LD4), over current (LD5), power LED (黄色，LD6), USB FAULT (LD7), VBUS (LD8)。
+  - LED：8个，user LED (JP5跳帽需连接)(黄色，PB0，LD1；蓝色，PB7，LD2；红色，PB14，LD3), USB communication (LD4), over current (LD5), power LED (黄色，LD6), USB FAULT (LD7), VBUS (LD8)。
   - 按键：2个，B1（USER，PC13），B2（RESET）
 - 常用接口：USB 支持 3 种不同接口：虚拟 COM 端口、大容量存储和调试端口等。
 - 调试接口，板载 ST-LINK/V2-1 调试器。
@@ -86,7 +86,7 @@
 
 #### 运行结果
 
-下载程序成功之后，系统会自动运行，在SB2跳帽连接时，当按下用户按键USER KEY时，观察开发板上 LD1、LD2、LD2 的运行效果，三个LED会顺序周期性交替闪烁。
+下载程序成功之后，系统会自动运行，在JP5跳帽连接时，观察开发板上LD1的运行效果，黄色LED会周期性闪烁。
 
 连接开发板对应串口到 PC , 在终端工具里打开相应的串口（115200-8-1-N），复位设备后，可以看到 RT-Thread 的输出信息:
 
diff --git a/bsp/stm32/stm32f413-st-nucleo/applications/main.c b/bsp/stm32/stm32f413-st-nucleo/applications/main.c
index 089d629f1a..47f94085cb 100644
--- a/bsp/stm32/stm32f413-st-nucleo/applications/main.c
+++ b/bsp/stm32/stm32f413-st-nucleo/applications/main.c
@@ -26,36 +26,12 @@ int main(void)
     int count = 1;
 	/* set LED1 pin mode to output */
     rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT);
-    /* set LED2 pin mode to output */
-    rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT);
-	/* set LED3 pin mode to output */
-    rt_pin_mode(LED3_PIN, PIN_MODE_OUTPUT);
-	/* set USER KEY pin mode to input */
-    rt_pin_mode(KEY_PIN, PIN_MODE_INPUT_PULLDOWN);
 
     while (count++)
     {
-		if(rt_pin_read(KEY_PIN))
-		{
-			rt_pin_write(LED1_PIN, PIN_HIGH);
-			rt_pin_write(LED2_PIN, PIN_LOW);
-			rt_pin_write(LED3_PIN, PIN_LOW);
-			rt_thread_mdelay(500);
-			rt_pin_write(LED1_PIN, PIN_LOW);
-			rt_pin_write(LED2_PIN, PIN_HIGH);
-			rt_pin_write(LED3_PIN, PIN_LOW);
-			rt_thread_mdelay(500);
-			rt_pin_write(LED1_PIN, PIN_LOW);
-			rt_pin_write(LED2_PIN, PIN_LOW);
-			rt_pin_write(LED3_PIN, PIN_HIGH);
-			rt_thread_mdelay(500);
-		}
-		else
-		{
-			rt_pin_write(LED1_PIN, PIN_LOW);
-			rt_pin_write(LED2_PIN, PIN_LOW);
-			rt_pin_write(LED3_PIN, PIN_LOW);
-		}
+		rt_pin_write(LED1_PIN, PIN_HIGH);
+		rt_thread_mdelay(500);
+		rt_pin_write(LED1_PIN, PIN_LOW);
     }
 
     return RT_EOK;