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BLE（五）移动端工具 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...自：https://www.gandalf.site/2018/12/ble.html
0x1 Android手机抓取app蓝牙数据0x11 Android蓝牙HCI日志在部分Android机型为开发人员提供了保存蓝牙日志的选项，即可保存手机向设备发送的数据和设备响应的数据，打开方式如下：
开发者模式...
蓝牙BLE设备使用BLE拓展连不上蓝牙？ - 创客硬件开发 - 清泛IT社区，为创新赋能！
...蓝牙？
这里统一说明一下：
一般先用硬件厂商提供的App 或者 nRF Connect App 进行硬件连接和测试，没问题再使用ai2 ble拓展开发。
如果测试没有问题，ai2 蓝牙连接处代码及具体的报错信息截图提供，具体问题具体分析。
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...
...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 还可以控制蓝牙模块的IO 口么？这个 APP程序 使用透传UUID 还可以控制蓝牙模块的IO 口么？透传uuid和io控制的uuid是不一样的，具体清参考：https://bb...
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！
...使用调用.WriteBytes
After a lot of hours I found the problem in my app.
How I proceeded:
1- At ESP32 code I put this line: BLEDevice::setMTU(192);
2- At app I put the call Request MTU on the .Connected block asking for the same 192 bytes;
In my case, when I have to send a payload < 23...
BLE数据收发 20个字节的限制问题 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...来源中文文档：https://www.fun123.cn/reference/iot/bluetoothle.html
App Inventor 2 发表于 2024-11-07 17:28
RequestMTU – 为 BluetoothLE 连接请求新的最大传输单元 (MTU)。此功能仅在两个设备都支持蓝牙 4.2 或更高 ...
谢谢，但是我设置了MTU为1...
Reverse Range in Swift
...onstruct which can be used to iterate and increment by arbitrary integers. Apple also stated that floating point support is coming.
Sourced from his answer:
for x in stride(from: 0, through: -8, by: -2) {
println(x) // 0, -2, -4, -6, -8
}
for x in stride(from: 6, to: -2, by: -4) {
println...
Run single test from a JUnit class using command-line
I am trying to find an approach that will allow me to run a single test from a JUnit class using only command-line and java.
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How to store date/time and timestamps in UTC time zone with JPA and Hibernate
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hibernate.jdbc.time_zone appears to be ignored or has no effect when used with PostgreSQL
– Alex R
Apr 29 '19 at 0:26
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Using the “animated circle” in an ImageView while loading stuff
I am currently using in my application a listview that need maybe one second to be displayed.
6 Answers
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How do I toggle an ng-show in AngularJS based on a boolean?
...s "overriding" the one I declared in the controller $scope. The problem disappears if I do the toggle via a function of the controller: ng-click="toggleBoolean()". Any idea why?
– antoine
Feb 12 '15 at 0:54
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