March 2017
Intermediate to advanced
262 pages
5h 26m
Chinese
Content preview from 物联网设备安全
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安全原型
——
littleBits
和
cloudBit
｜
193
图 7-16：激活短信通道
7.1.3
哎呀，我忘了按钮了
稍等。我们忘了添加展示门铃的按钮模块了。哎呀！如果没有一个真实的能够呈现门铃
的按钮，我们的项目就不完整了。不过不用担心：
littleBits
本身就是一个优雅的原型平台，
因而才会出现这种情况。添加一个按钮并不会影响之前已经做过的工作。
如果近看按钮模块（如图
7-3
所示），你就会看到它上边有一个向右的箭头。这表示按
钮按下时，模块的右侧将会受到触发。因而，按钮模块需要放置在
cloudBit
的左侧。
将
cloudBit
从
USB
电源模块中取走，
cloudBit
就会断电。将按钮模块接入到电源模块，
在电源模块的右侧接上
cloudBit
模块。项目看上去如图
7-18
所示。
194
｜
第
7
章
图 7-17：自定义触发短信息
图 7-18：使用 cloudBit 创建门铃原型
按下按钮，手机上就会收到短信息，如图
7-19
所示。
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.