<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[BigBadWolf2的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/BigBadWolf2</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; BigBadWolf2]]></copyright><item><title><![CDATA[【HAL库】用CubeMX和STM32F103核心板实现上位机串口通信]]></title><link>https://blog.youkuaiyun.com/BigBadWolf2/article/details/122948403</link><guid>https://blog.youkuaiyun.com/BigBadWolf2/article/details/122948403</guid><author>BigBadWolf2</author><pubDate>Tue, 15 Feb 2022 17:05:17 +0800</pubDate><description><![CDATA[硬件连接
通过CH340G与上位机的通信，
PA9（TX）—— RXD，PA10（RX）——TXD
具体步骤

在CubeMX中打开USART1，设定为全双工（Asynchronous）的通信
此时默认的GPIO端口设置为PA9（TX），PA10（RX）
打开中断使能
波特率设定为115200bits，8位的模式；USART时钟走的是APB1
需要在工程文件中对Printf函数做重定向：

对文件进行编译，关联所有程序
在 stm32f4xx_hal.c中包含#include &lt;stdio.h&gt;]]></description><category></category></item><item><title><![CDATA[豆瓣高分电影爬取学习心得]]></title><link>https://blog.youkuaiyun.com/BigBadWolf2/article/details/105041245</link><guid>https://blog.youkuaiyun.com/BigBadWolf2/article/details/105041245</guid><author>BigBadWolf2</author><pubDate>Mon, 23 Mar 2020 09:18:21 +0800</pubDate><description><![CDATA[自己写的豆瓣高分电影爬取程序
使用request和re正则库
#豆瓣电影评分榜单

import requests
import re

def getHTMLText(url):
	try:
		hd = {"User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) ...]]></description><category></category></item></channel></rss>