From 9dd8855938bb5b1a6a289231888bb23d9288c103 Mon Sep 17 00:00:00 2001
From: Bernard Xiong <bernard.xiong@gmail.com>
Date: Tue, 29 May 2018 10:26:54 +0800
Subject: [PATCH] [BSP][stm32f411-nucleo] Update README.md file.

---
 bsp/stm32f411-nucleo/README.md | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/bsp/stm32f411-nucleo/README.md b/bsp/stm32f411-nucleo/README.md
index b7ba6ce3a..4f6fd4d08 100644
--- a/bsp/stm32f411-nucleo/README.md
+++ b/bsp/stm32f411-nucleo/README.md
@@ -2,16 +2,18 @@
 
 ## 1. 简介
 
-STM32F411-nucleo 是由意法半导体推出的搭载Cortex-M4内核的高性能微控制器开发板，包括如下硬件特性：
+[STM32F411-nucleo](http://www.st.com/resource/en/data_brief/nucleo-f411re.pdf) 是由意法半导体推出的搭载Cortex-M4内核的高性能微控制器开发板，包括如下硬件特性：
 
 | 硬件 | 描述 |
 | -- | -- |
-|芯片型号| STM32F411RE |
+|芯片型号| [STM32F411RE](http://www.st.com/en/microcontrollers/stm32f411re.html) |
 |CPU  | Cortex-M4 |
 |主频 | 100MHz |
 |Flash| 512kB |
 |SRAM | 128KB |
 
+![stm32f411](http://www.st.com/content/ccc/fragment/product_related/rpn_information/product_circuit_diagram/4b/82/41/cc/25/ec/4b/3d/bd_stm32f411xe_512k.jpg/files/bd_stm32f411xe_512k.jpg/_jcr_content/translations/en.bd_stm32f411xe_512k.jpg)
+
 ## 2. 编译说明
 
 | 环境         | 说明                                                         |
-- 
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