大约有 1,700 项符合查询结果(耗时:0.0070秒) [XML]

https://www.fun123.cn/reference/iot/ble_spp.html 

低功耗蓝牙(BLE) 和 经典蓝牙(SPP) 的区别 · App Inventor 2 中文网

...路用于数据交换。 传输距离 距离较短,通信范围一般为10米左右。 通信距离较远,可达100米。 传输速率 低带宽:BLE数据速率通常只有1Mbps或更低,主要用于低速度的控制类或监测类数据交...
https://bbs.tsingfun.com/thread-1510-1-1.html 

MAC地址可以连上,硬件通信时提示无效的UUID? - 创客硬件开发 - 清泛IT社...

...MAC地址填错了导致的,填了一个其他的非预期的地址,而通信时用的目标硬件uuid,匹配失败导致的。 [/hide] 经测试,我们的硬件mac地址是: E2:E0:5A:46:86:2F 使用MAC地址连接,一切功能正常。 这个 APP程序 使用透传UUID 还可...
https://bbs.tsingfun.com/thread-1682-1-1.html 

蓝牙通信接收的信息出现乱码? - App应用开发 - 清泛IT社区,为创新赋能!

...乱码,大概率是波特率设置不对,请注意检查。 2、保持通信两边统一的编码,例如都使用UTF8编码。ESP端请确认文件、字符串等编码格式,AppInventor端也可以设置编码格式。 波特率 是115200, 换了字符编码也不行ESP32 蓝牙发送...
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Why does modern Perl avoid UTF-8 by default?

..., we got 12. Perl assumed that we were operating on the Latin-1 string "æå­åã" (which is 12 characters, some of which are non-printing). This is called an "implicit upgrade", and it's a perfectly reasonable thing to do, but it's not what you want if your text is not Latin-1. That's why it's c...
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Is the LIKE operator case-sensitive with MSSQL Server?

In the documentation about the LIKE operator , nothing is told about the case-sensitivity of it. Is it? How to enable/disable it? ...
https://stackoverflow.com/ques... 

How do I copy a string to the clipboard on Windows using Python?

...ith Unicode characters too. I have tested characters ±°©©αβγθΔΨΦåäö to work on Win10 64-bit, with Python 3.5 and pyperclip 1.5.27. – np8 Jul 3 '16 at 15:55 ...
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HTML5 Canvas vs. SVG vs. div

What is the best approach for creating elements on the fly and being able to move them around? For example, let's say I want to create a rectangle, circle and polygon and then select those objects and move them around. ...
https://bbs.tsingfun.com/thread-969-1-1.html 

UCenter通信成功,通知失败的解决办法 - 建站技术 - 清泛IT论坛,有思想、有深度

/source/class/discuz/discuz_application.php 注释掉如下3行代码,亲测有效,原因目前未知,有兴趣可以研究一下。
https://bbs.tsingfun.com/thread-1548-1-1.html 

BLE通信数据不能超过20字节? - 创客硬件开发 - 清泛IT社区,为创新赋能!

有用户反馈,BLE好像有20字节(字符)限制,难道要破开多次传输?如果用专门的安卓调试软件就没问题,用AI2就截断了,只有20字符。 答复: 1-在 ESP32 代码中,我放置了这一行:BLEDevice::setMTU(192); 2- 在应用程序中,我将...
https://www.tsingfun.com/it/cpp/1364.html 

windows下捕获dump之Google breakpad_client的理解 - C/C++ - 清泛网 - 专注C/C++及内核技术

...CrashGenerationServer类对象。客户进程和服务进程是通过管道通信的,通信可以只发生在客户进程初始化阶段,server进程要先于客户进程启动,否则客户进程就会因为管道连接不上而使用进程内dump捕获。 进程内、外dump捕获,都是...