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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
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1、硬件接线（特别注意：VCC 3.3v 或 5v 请参阅说明书，不要弄错以免烧坏硬件）
2、串口工具测试
什么是串口工具？
测试与BLE硬件通信（数据透传）
AT控制指令
IO口控制
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Force unmount of NFS-mounted directory [closed]
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Tim Cooper
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answered Sep 2 '08 at 19:05
tesseintessei...
Is there a way to programmatically scroll a scroll view to a specific edit text?
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answered Jul 26 '11 at 14:39
Sherif elKhatibSherif elKhatib
44k1515 gold badges8484 silver badges105105 bronze badges
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Floating View 扩展：悬浮视图扩展，将组件转换为悬浮窗口 · App Inventor 2 中文网
.... 聊天应用悬浮窗
2. 音乐播放器悬浮控制
3. 视频播放悬浮窗
4. 快捷工具悬浮窗
5. 通知悬浮窗
6. 组件重叠布局
使用说明
基本使用步骤
重要提示
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How to assert two list contain the same elements in Python? [duplicate]
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163
As of Python 3.2 unittest.TestCase.assertItemsEqual(doc) has been replaced by unittest.TestCase....
How to create an empty file at the command line in Windows?
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32 Answers
32
Active
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In c# is there a method to find the max of 3 numbers?
Like Math.Max but takes 3 or params of int?
10 Answers
10
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PHP Sort Array By SubArray Value
...ionNumber"];
}
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usort($array, "cmp_by_optionNumber");
In PHP ≥5.3, you should use an anonymous function instead:
usort($array, function ($a, $b) {
return $a['optionNumber'] - $b['optionNumber'];
});
Note that both code above assume $a['optionNumber'] is an integer. Use @St. John Jo...
How to copy a collection from one database to another in MongoDB
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edited Jan 12 '16 at 14:34
Sergey Brunov
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answe...