I started to study FreakZ stack since last November and this week I try to run on the real stuff (2 RZUSBSticks). Follow the command-line interface userguide, I managed to do the "Start" and
If we plan to write our own stack for ZigBee Standard communication, how should we prepare?First, we must read the basic specifications.One is IEEE802.15.4-2003 and the other is ZigBee-2007 Pro(the lastest released by ZigBee Aliance). While reading the spec you might want to see if any existed stack that you can refer to. So the next recommended resource is the Freaklabs website(http:www.freaklabs.org). Akiba (creator of this site ) has a open-source project named "FreakZ" which targets on ZigBee standard. Besides the project, there are many tech posts worth reading on this site. Most of them are written by Akiba himself during his research on ZigBee technology.But unforturnately, freakz project is not continued because Akiba turns his focus on 6LowPan.
...The following content is copied from http://web.archive.org/web/20090601225835/http://www.nmodbus.com/Samples.aspxBut the site is blocked in China, I paste the sample codes here for others convenience
NModbus is a very cool Modbus implementation with C# for .Net framework .
This is the NMOdbus samples copied and printed to PDF file for better sharing. As you may know, the official site of NModbus has been hacked and may not be recovered any more. Although we can get most of the resource from it's googlecode and googlegroup, but the samples discussed and lined in many posts cannot be easily found.
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这次大会上展示了Google Android@Home的应用,现场有合作厂商的一个LED球泡的Demo,主要是调光的控制,我们可以看到一个bridge设备,演示人员介绍是把灯泡的mesh network连接到IP 网络。所有的架构和我们的设计并无二致,然而欧洲的不少网友对于合作厂商的radio只运行在900MHz颇为失望,并发出Google就是不重视欧洲人民的结论。这实在是冤枉了Google,无线通信频率的选择更多的是合作厂商LSG的事,对于Google来说,不过是个IP通信上的Android平台上开发Framework。希望这个Framework最终成功并开源,那么我们也可以借助Google的东风了。
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