Chinese RFC documents, without translation, the right to study very helpful!

CAN-bus总线V2.0规范中文说明文档-CAN-bus Bus V2.0 standard Chinese documentation

串口调试源代码，自己动手已经实现，能够完成与单片机的串口通信-serial debug source code, has achieved its own hands, and MCU to complete the serial communications

dos下串口数据传输的基类-dos Serial data transmission base class

RFM12B and AVR The RFM12B tranceiver module has become quite popular recently due to its low price comparing to other modules on the market. But many people nd it hard to make these tranceivers work (mainly because of buggy programming guide provided by manufacturer, I guess...). This short article contains compact and simple code that can be used just to get these modules running for the rst time. It is based on manufacturer s examle code with slight (but crucial) changes.

DSP与PC机串行通信的研究.pdf -DSP and PC serial communication studies. Pdf DSP and PC serial communication studies. pdf

用于串口调试的工具,利用mscomm类库,支持16进制输入和文本输入,支持文件输入,支持文件保存,对界面做了优化.

gPRS源码 2008-07-14 起初的硬件有鑫旺焊回来之后缺少几个电容和1个100k的电阻，电容主要是电源处储能的功能， 100k的电阻是sim300的sim卡上的simpress管脚和VEXT之间的，没焊接时虽能找到网络，但是会出现 掉网的情况，把这些补上后，没有问题了。所以以前的经验电路还是比较准确的。电源处一定要稳定。 另外这次初始化完成后就立即发短信，第一个短信没有成功。并且在串口接收中发短信等待模块返回信息时， 返回了call ready，之后再发就可以发出去了。这应该是模块还没有准备好。Call Ready 当搜寻到网络后开始发送短信，有时会出现+CMS ERROR: 517这个错误，应该是sim卡还未准备好，所以当搜寻到网络 后需要在多等待一会。待模块发出Call Ready信号后，再操作。 2008-7-19 今天早晨在家准备调试一下这个模块发现始终找不到网络，用哪个卡都

4428卡的读写卡程序，有自己的dll文件 -4428 card reader card procedures, it has its own dll file

TCP/IP祥解。卷3。 作者（美）：w.richard stevens. 机械工业出版社。-TCP/IP xiang, XIE. Volume 3. The author (American) : w.richard anatomy. Machinery Industry Press.

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