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nFC Connect低功耗蓝牙APP工具的使用 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...点击CONNECT进行连接。连接成功后会自动获取所有的服务UUID。选择蓝牙协议说明书指定的UUID进行读写操作。
四、写入数据、监听数据、读取数据
写操作时，数据从APP主机端发送到从从机设备端。点击写操作后，将指令填...
BLE 蓝牙模块 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
BLE 蓝牙模块（使用模块自带 IO 口控制， ）IO口 uuid 现在连接方式是，选择框里发现蓝牙名字，在选中 点击连接按钮 连接, IO口方式 uuid 有没有在初始化里面自动连接的方法？初始化中自动连接某个ble设备的推荐方式是：...
BLE 蓝牙APP 接收不到来自蓝牙模块的讯息 - App应用开发 - 清泛IT社区，为创新赋能！
...it（单字节）整型值发生变化时接收更新。服务UID 和特性UUID 是必需的。signed 参数指示在转换为 App Inventor数字 时是否应将字节解释为有符号值。每当收到更改时，将触发 BytesReceived 事件。
你这个问题比较泛，需要具体问题...
- App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
1、UUID 背后的理念是，由于空间非常大（2^128，比宇宙中原子的估计数量还要多），随机选择两个 UUID 来标识事物时几乎不可能产生碰撞。如果您知道要连接的服务/特性，那么将它们编码到应用程序中是有意义的。如果您正在开...
How do I add custom field to Python log format string?
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I have this sample not working for me. import uuid uniqueId = str(uuid.uuid4()) extra = {"u_id" : uniqueId} RotatingHandler = RotatingFileHandler(LOG_FILENAME,encoding='utf-8',maxBytes=maxSize, backupCount=batchSize) logger.basicConfig(handlers=[Rotatin...
HTML - how can I show tooltip ONLY when ellipsis is activated
... answered Oct 29 '15 at 19:11
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Encode html entities in javascript
...t as following:
var str = "Test´†®¥¨©˙∫ø…ˆƒ∆÷∑™ƒ∆æø𣨠ƒ™en tést".toHtmlEntities();
console.log("Entities:", str);
console.log("String:", String.fromHtmlEntities(str));
Output in console:
Entities: Dit is&...
Android 4.3 Bluetooth Low Energy unstable
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Better not use android.bluetooth.BluetoothAdapter#startLeScan(UUID[] serviceUuids, LeScanCallback callback) with the parameter to filter for certain service UUIDs because this is broken completely in Samsung Galaxy S3 with Android 4.3 and doesn't work for 128bit UUIDs in general.
Gatt a...
How do you reverse a string in place in C or C++?
...it, nor the patience to use a hexeditor)
Examples:
$ ./strrev Räksmörgås ░▒▓○◔◑◕●
░▒▓○◔◑◕● ●◕◑◔○▓▒░
Räksmörgås sågrömskäR
./strrev verrts/.
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Difference between datetime and timestamp in sqlserver? [duplicate]
What is the difference between Timestamp and Datetime SQL Server?
2 Answers
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