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蓝牙配对pin码设置 - 创客硬件开发 - 清泛IT社区,为创新赋能!
蓝牙配对 PIN 码是用于确保蓝牙设备之间进行加密通信的一种方式。一般情况下,当您在第一次将两个蓝牙设备配对时,会要求您输入一个四位数或六位数的 PIN 码。这个 PIN 码必须在两个设备上输入相同的数字才能进行配对成功...
APP INVENTOR硬件交互学习教程05——自动连接蓝牙实现 - 创客硬件开发 - 清...
每次打开手机APP,需要选择蓝牙,用起来很麻烦。有没有方法实现自动连接上次的地址呢,接下来请看吧!
1.界面设计增加了一个微数据库组件,借助它用来存储硬件地址
2.程序设计
这里主要用两个方法,存储地址方法;读...
AppInventor2 二进制文件的读写 - App Inventor 2 中文网 - 清泛网 - 专注C/C++及内核技术
AppInventor2 二进制文件的读写蓝牙客户端或 ble 都可以接收二进制数组,返回的数据是列表:如果想要保存二进制到文件,可以考虑转换成 ascii 或 base64 化,然后通过文件管理器保存为文件,具体请帮助,...蓝牙客户端或 ble 都可...
Is there a way to get rid of accents and convert a whole string to regular letters?
...
Tests on my HW with 32bit JDK show that this performs conversion from àèéľšťč89FDČ to aeelstc89FDC 1 million times in ~100ms while Normalizer way makes it in 3.7s (37x slower). In case your needs are around performance and you know the input range, this may be for you.
Enjoy :-)
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What is the best way to remove accents (normalize) in a Python unicode string?
...'', text)
return text
result:
text_to_id("Montréal, über, 12.89, Mère, Françoise, noël, 889")
>>> 'montreal_uber_1289_mere_francoise_noel_889'
share
|
improve this answer
...
Error 507: unable to connect. is the device turned on? 无法连接,设备...
英文资料显示,可能是蓝牙设备问题未开机之类的,也可能是连接相关的代码写的不对,用的错误的地址连接等。
一般来说多是使用 hc05 经典蓝牙连接出现的问题,配对后没通电开机,会报这个错误。配对后硬件发生变...
Convert a Unicode string to a string in Python (containing extra symbols)
...u don't need to translate the non-ASCII characters:
>>> a=u"aaaàçççñññ"
>>> type(a)
<type 'unicode'>
>>> a.encode('ascii','ignore')
'aaa'
>>> a.encode('ascii','replace')
'aaa???????'
>>>
...
APP INVENTOR硬件交互学习教程09——增加人机交互提示 - 创客硬件开发 - 清...
这一节,实现增加人机交互提示;蓝牙未开启情况下,打开APP会有提示弹窗,应用程序正在开启蓝牙,是否允许
蓝牙未连接情况下,发送命令给下位机提示弹窗,请先连接蓝牙
1.界面设计
增加activity 活动控件和对话框控件...
Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the La
...dow.atob(b64)));
console.log(str2);
Example:
var str = "äöüÄÖÜçéèñ";
var b64 = window.btoa(unescape(encodeURIComponent(str)))
console.log(b64);
var str2 = decodeURIComponent(escape(window.atob(b64)));
console.log(str2);
Note: if you need to get this to work in mobile-safari, you migh...
Why should we NOT use sys.setdefaultencoding(“utf-8”) in a py script?
...
#!/usr/bin/env python
#-*- coding: utf-8 -*-
u = u'moçambique'
print u.encode("utf-8")
print u
chmod +x test.py
./test.py
moçambique
moçambique
./test.py > output.txt
Traceback (most recent call last):
File "./test.py", line 5, in <module>
print u
UnicodeEnc...
