<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[luan_qd的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/luan_qd</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; luan_qd]]></copyright><item><title><![CDATA[Qt文件IO及数据库]]></title><link>https://blog.youkuaiyun.com/luan_qd/article/details/128921717</link><guid>https://blog.youkuaiyun.com/luan_qd/article/details/128921717</guid><author>luan_qd</author><pubDate>Tue, 07 Feb 2023 17:03:37 +0800</pubDate><description><![CDATA[Qt本身并不具备数据库，需要配合市面上的数据库产品才能使用。为了规范不同厂商数据库的操作方式，Qt为它们指定了一套统一的操作接口。与Qt数据库操作相关的类有，数据库操作连接类●QSqlError数据库错误信息类。Qt调用数据库，当数据库本身产生错误时，会把错误信息传递给Qt，Qt会把错误信息封装为QSqlError类对象，以便于程序员获取。●QSqlQuery数据库操作类，用于执行SQL语句。Qt的数据库相关的类使用前需要先在.pro项目配置文件中，添加sql模块。]]></description><category></category></item><item><title><![CDATA[Qt Create常用类及多窗口编程]]></title><link>https://blog.youkuaiyun.com/luan_qd/article/details/128858420</link><guid>https://blog.youkuaiyun.com/luan_qd/article/details/128858420</guid><author>luan_qd</author><pubDate>Thu, 02 Feb 2023 22:41:23 +0800</pubDate><description><![CDATA[Qt中常用类及多窗口编程]]></description><category></category></item><item><title><![CDATA[C++基础笔记整理（异常处理）]]></title><link>https://blog.youkuaiyun.com/luan_qd/article/details/128666722</link><guid>https://blog.youkuaiyun.com/luan_qd/article/details/128666722</guid><author>luan_qd</author><pubDate>Thu, 12 Jan 2023 21:37:13 +0800</pubDate><description><![CDATA[C++异常处理笔记整理]]></description><category></category></item><item><title><![CDATA[C++笔记（面向对象核心）第四篇]]></title><link>https://blog.youkuaiyun.com/luan_qd/article/details/128652364</link><guid>https://blog.youkuaiyun.com/luan_qd/article/details/128652364</guid><author>luan_qd</author><pubDate>Wed, 11 Jan 2023 23:20:25 +0800</pubDate><description><![CDATA[C++基础笔记整理（面向对象核心）]]></description><category></category></item><item><title><![CDATA[C++基础笔记整理（STL编程）  第三篇]]></title><link>https://blog.youkuaiyun.com/luan_qd/article/details/128651360</link><guid>https://blog.youkuaiyun.com/luan_qd/article/details/128651360</guid><author>luan_qd</author><pubDate>Wed, 11 Jan 2023 22:34:52 +0800</pubDate><description><![CDATA[关于C++ STl编程笔记整理]]></description><category></category></item><item><title><![CDATA[C++基础笔记整理（运算符重载）  第二篇]]></title><link>https://blog.youkuaiyun.com/luan_qd/article/details/128637130</link><guid>https://blog.youkuaiyun.com/luan_qd/article/details/128637130</guid><author>luan_qd</author><pubDate>Tue, 10 Jan 2023 22:18:59 +0800</pubDate><description><![CDATA[关于C++运算符重载的笔记整理]]></description><category></category></item><item><title><![CDATA[C++基础笔记整理  第一篇]]></title><link>https://blog.youkuaiyun.com/luan_qd/article/details/128622004</link><guid>https://blog.youkuaiyun.com/luan_qd/article/details/128622004</guid><author>luan_qd</author><pubDate>Tue, 10 Jan 2023 21:48:01 +0800</pubDate><description><![CDATA[C++笔记整理]]></description><category></category></item><item><title><![CDATA[GPIO输出控制PB0]]></title><link>https://blog.youkuaiyun.com/luan_qd/article/details/128523289</link><guid>https://blog.youkuaiyun.com/luan_qd/article/details/128523289</guid><author>luan_qd</author><pubDate>Mon, 02 Jan 2023 18:32:38 +0800</pubDate><description><![CDATA[【代码】GPIO输出控制PB0。]]></description><category></category></item><item><title><![CDATA[有关 485 CAN单总线 SPI 12C简介]]></title><link>https://blog.youkuaiyun.com/luan_qd/article/details/128487204</link><guid>https://blog.youkuaiyun.com/luan_qd/article/details/128487204</guid><author>luan_qd</author><pubDate>Fri, 30 Dec 2022 08:52:25 +0800</pubDate><description><![CDATA[485485（一般称作 RS485/EIA-485）是隶属于 OSI 模型物理层电气特性规定为 2 线半双工多点通信标准它的电气特性和 RS-232 大不一样，用缆线两端的电压差值来表示传递信号特性1.    接口电平低，不易损坏芯片RS485 的电气特性：逻辑“1”以两线间的电压差为+(2~ 6)V表示；逻辑“0”以两线间的电压差为-(2~6)V 表示。接口信号电平比 RS232 降低了，不易损坏接口电路的芯片，且该电平与 TTL 电平兼容，可方便与 TTL 电路连接。]]></description><category></category></item><item><title><![CDATA[关于STM32使用scanf /printf输出输入重定向]]></title><link>https://blog.youkuaiyun.com/luan_qd/article/details/128486318</link><guid>https://blog.youkuaiyun.com/luan_qd/article/details/128486318</guid><author>luan_qd</author><pubDate>Thu, 29 Dec 2022 19:43:50 +0800</pubDate><description><![CDATA[摘要：关于stm32G030，使用c库函数scanf/printf，重定向的分享]]></description><category></category></item></channel></rss>