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包含两篇关于FXO、FXS的文档，详细介绍了他们的区别和定义，是开发VOIP设备的很好的参考材料。这种材料可是很难找哦。...
包含两篇关于FXO、FXS的文档，详细介绍了他们的区别和定义，是开发VOIP设备的很好的参考材料。这种材料可是很难找哦。-contains two of FXO, FXS document, detailing their differences and definitions, the development of VoIP equipment is a good reference material. But this material is difficult to find, oh.
- 2022-02-02 17:11:15下载
- 积分：1
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MODBUS RTU 51与维纶触摸屏通信例程。
应用背景51和维纶触摸屏的通信。MODBUS RTU 51与维纶触摸屏通信例程。支持的功能码：位：01（读）、05（写），字：03（读）、06（写）还有与数码管显示输入的数据！注释的也比较详细。个人觉得移植性也比较好。各种的单片机上可以移植修改，关键技术51单片机与威纶通触摸屏通讯说明
本程序仅作为一个通信示例程序，实际使用需要根据需要修改。
请使用EB8000 V3.45以上软件打开触摸屏程序，程序为压缩后的触摸屏程序，请使用EB8000软件 工具——压缩/解压缩 菜单下的工具先进行解压缩；单片机使用Keil uVision3 V3.50编译
一、硬件连接
使用ATMEl 89S52单片机。
二、软件
1、通讯环境
触摸屏设置为主站，即PLC 类型 MODBUS RTU，通讯参数设为“9600,N,8,1”。
2、触摸屏程序，需要读取八个位，以及八个字，每次最少读取16个位，字可以一次读取一个也可以一次读取八个。
有0X1-0X8八个位切换开关，6X1-6X8八个字输入元件，支持的功能码：位：01（读）、05（写），字：03（读）、06（写）
当没有写操作时，屏不断的向单片机发送如下码（16进制显示）：
01 01 00 00 00 10 3D C6 （位读取）
01 03 00 00 00 08 44 0C （字读取）
此时，如果不给屏发送相应返回值的话，屏就会提示“PLC no response”
3、51单片机程序思路及说明
- 2022-02-02 15:58:29下载
- 积分：1
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现代通信原理信息工程核心课程希望给大家有帮助
现代通信原理信息工程核心课程希望给大家有帮助-Modern Communication Theory Information Engineering core curriculum hope to have everyone help
- 2022-05-24 23:56:27下载
- 积分：1
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Windows CE 串口通讯程序，可用于Wince 4.0以上的版本，使用EVC++ 4.0编写...
Windows CE 串口通讯程序，可用于Wince 4.0以上的版本，使用EVC++ 4.0编写-Windows CE serial communication procedures, can be used for Wince 4.0 or later, use EVC++ 4.0 preparation
- 2022-07-06 16:21:03下载
- 积分：1
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dos Serial data transmission base class
dos下串口数据传输的基类-dos Serial data transmission base class
- 2022-01-26 16:11:51下载
- 积分：1
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IC card reader procedures, straightforward, practical, reference value
IC卡读写程序，简单明了，实用性强，有参考价值-IC card reader procedures, straightforward, practical, reference value
- 2022-04-20 20:29:40下载
- 积分：1
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一个64 QAM数字调制的matlab代码
a matlab code for 64 QAM digital modulation
- 2022-02-25 15:47:12下载
- 积分：1
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WiMAX和IEEE 802.16标准的宽带无线接入，是越…
WiMAX, or the IEEE 802.16 standard for broadband wireless access, is increasingly gaining in popularity as
a technology with significant market potential. This paper first provides an overview of the existing and
developing 802.16 standards and their key differences/applications. The PHY and MAC layers of a typical
WiMAX base station are then described. The associated implementation challenges faced by WiMAX
infrastructure developers, including performance/cost/flexibility trade-offs in the choice of silicon, are
clearly outlined. The paper then describes how FPGA-based system implementation can address these
challenges including the “accelerated time-to-market” requirement which is considered a key enabler for
early success in this market. As an example design, the physical layer implementation of the 802.16d
standard with Altera FPGAs and intellectual property (IP) is proposed.
- 2022-07-16 08:36:42下载
- 积分：1
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gprs短信的收发短信的源码
gprs短信的收发短信的源码, 已验证 可以使用
- 2022-03-28 16:03:17下载
- 积分：1
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MAD
MAD-FCL (version 1.7):
The software is distributed in binary/source code formats under a GPL (GNU GENERAL PUBLIC LICENSE) license. Here is the official copyright and license. Distribution package is named to MAD-FCL (MAD FileCasting Library). Source distribution contains MAD-ALCLIB, MAD-SDPLIB and MAD-FLUTELIB libraries and MAD-FLUTE application. Binary distribution contains only MAD-FLUTE application. MAD-FCL is implemented using C-language. Latest binaries for Linux are compiled in Debian Linux with gcc version 4.0.4.
MAD-FLUTELIB is based on RFC 3926 (FLUTE). -MAD-FCL (version 1.7):
The software is distributed in binary/source code formats under a GPL (GNU GENERAL PUBLIC LICENSE) license. Here is the official copyright and license. Distribution package is named to MAD-FCL (MAD FileCasting Library). Source distribution contains MAD-ALCLIB, MAD-SDPLIB and MAD-FLUTELIB libraries and MAD-FLUTE application. Binary distribution contains only MAD-FLUTE application. MAD-FCL is imp
- 2022-02-06 22:39:32下载
- 积分：1
