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串口Read不到数据的问题 - 用户反馈 - 清泛IT社区,为创新赋能!
					
用户发送的是 8n1 的格式,但是ai2的串口貌似不支持这种格式。写串口正常,读串口为空,len为0。
目前经过测试验证,应该是 \n 作为结束符的。发送时,也是。
ai2使用 physicaloid 库完成的串口功能。
				
				
				
							App Inventor 2 经典蓝牙(SPP) 硬件接入:hc05 · App Inventor 2 中文网
					...								教育													入门必读					中文教程					IoT专题					AI2拓展					ChatGPT接入					Aia Store					开通VIP																																																																						搜索																																		            	        App Inventor 2 经典蓝牙(SPP) 硬件...				
				
				
							使用Activity启动器组件 · App Inventor 2 中文网
					...其包名和类名。 如果你有 App Inventor 应用程序的源代码(aia 文件),你可以按如下方式找到这些名称:
将源代码下载到你的计算机。
使用文件资源管理器或解压缩实用程序,找到名为 youngandroidproject/project.properties 的文件。
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							Conceptually, how does replay work in a game?
					...replay was being viewed in Brood War.  For those unfamiliar, Brood War contains all of the original units and buildings, as well as a variety of new ones.  In the original game, the player had defeated the computer by creating units that the computer could not easily counter.  When I played the repl...				
				
				
							App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
					...								教育													入门必读					中文教程					IoT专题					AI2拓展					ChatGPT接入					Aia Store					开通VIP																																																																搜索																																		            	        App Inventor 2 UrsAI2UDP 拓展 - UDP广播...				
				
				
							vim line numbers - how to have them on by default?
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vim .vimrc and add the commands you want at open.
Here's a site that explains the vimrc and how to use it.
    
    
        
            
            
                
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							how does multiplication differ for NumPy Matrix vs Array classes?
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The main reason to avoid using the matrix class is that a) it's inherently 2-dimensional, and b) there's additional overhead compared to a "normal" numpy array. If all you're doing is linear algebra, then by all means, feel free t...				
				
				
							How to set Meld as git mergetool
					...ui after you git config (to take a change)
                
– Yohanes AI
                Sep 1 at 10:24
            
        
    
            
	    
        
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							What's the best way to learn LISP? [closed]
					... and C for a couple or years now, and I just finished reading Hackers and Painters, so I would love to give LISP a try!
                    
                    
                        
                            
                                
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							Remove Primary Key in MySQL
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Without an index, maintaining an autoincrement column becomes too expensive, that's why MySQL requires an autoincrement column to be a leftmost part of an index.
You should remove the autoincrement property before dropping the key:
ALTER TABL...				
				
				
							