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micro:bit 连接报错 - 创客硬件开发 - 清泛IT社区,为创新赋能!
连接micro:bit设备的时候,找到对应的mrico:bit地址了,在连上的一瞬间后直接闪退,并且报错了。
运行故障
java.lang.ExceptionInInitializerError at edu.mit.appinventor.ble.BluetoothLEint$BLEReadOperation.subscribeBluetoothLEint.java:357) at
edu.mit.appinventor....
请问各位前辈大佬关于APP熄灭屏幕后停止响应的问题。 - App Inventor 2 拓...
...、让屏幕常亮。
或
2、长时间息屏,再打开App时判断MQTT连接及订阅状态,进行重连、重新订阅。
CustomWebView拓展:WebViewer的扩展版本,具有更高的自定义性和灵活性 - A...
...记录
创建网页快捷方式
下载离线页面并在没有互联网连接的情况下加载
https://community.appinventor.mi ... -of-web-viewer/9934
https://github.com/vknow360/CustomWebView
Modbus硬件控制03——485串口助手控制继电器 - 创客硬件开发 - 清泛IT社区...
...成485调试功能,自带CRC校验,非常易于使用。
2.硬件连接
通过USB转485接入PC
3.测试步骤
发送字符串,一共两条指令
第一条是闭合继电器
第二条是断开继电器
Using jQuery to center a DIV on the screen
...isible".'
– Cԃաԃ
Nov 21 '13 at 9:05
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译文:理解Java中的弱引用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...一个人真正了解这方面的知识。在面试过程中,我还尝试提示一些东西,来看看有没有人突然说一声“原来是这个啊”,结果很是让我失望。我开始困惑,为什么这块的知识如此不被重视,毕竟弱引用是一个很有用途的特性,况...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
...lugged my (FTDI) serial device from the USB and afterwards it produced the error that you described.
– Warpspace
Jan 29 '19 at 8:30
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Linq: GroupBy, Sum and Count
...ne object and do something if there are more than one result, like log the error.
– Kristianne Nerona
Feb 5 at 16:56
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Visual Studio Expand/Collapse keyboard shortcuts [duplicate]
...t's CTRL + M + O - letter O, not number 0. The cleanup-edit introduced the error into the answer.
– goodeye
Jul 4 '16 at 1:52
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Traversing text in Insert mode
... mode. And it happens to be much faster to erase a small word than to fix errors within it. I'm so used to it that I had closed the browser page when I was typing this message...!
Repetition count is largely underused. Before making a movement, you can type a number; and the movement will be rep...