现代通信原理matlab仿真程序

先测试下，通达信公式学习教程，初学者很有用，建议收藏，谢谢！！(Fourthly early rising gives us enough time to get ready for our worksuch as to wash our faces and hands and eat our breakfast properly.)

此代码为基于单片机开发板的交通灯案例，模仿交通灯工作原理(This code is based on a traffic light microcontroller development board case, imitating traffic lights works)

说明：  实现STM32F4的USBhost功能，使用uvc协议与USB摄像头通讯。(Realize the USB host function of STM32F4 and communicate with USB camera using UVC protocol.)

OFDM基本原理，电子书，基础书，通信人的必备，请大家多多下载(OFDM based on books, communication were essential, please bear download)

SISTEMA DE Persistencia

STM32103RBt6，进行BLDC的电机控制，具有速度闭环。(STM32103RBt6, the BLDC motor control with speed closed loop.)

一个DLAN的例子，非常的有意思，希望能够有帮助(An example of a DLAN, very interesting, hope to be able to help)

今天，小 G 已了解到修理厂共有 m 种不同的修理原料，对于第 i 种原料，可以对任意一个石桥的美化度增加 di，当然这也需要花费 hi 的费用。由于发货场的修理原料有限，对于任意一种修理原料，只有一件，也就是说小 G 只能选择购买和不购买，对于第 i 种修理材料能成功修理第 j 个石桥的条件是：当且仅当 hi ≥ pj，di ≥ vj。现在，已知这 n 个石桥修理的最小花费值，最小美化需求度，以及 m 种修理原料的费用，可对石桥增加的美化度值，请你帮助小 G 完成这个修理任务。(Today, Xiao G has learned that there are m different repair materials in the repair shop. For the first material, Di can be added to the beautification of any stone bridge. Of course, it also costs hi. Because of the limited repair materials in the delivery yard, there is only one repair material for any kind of repair material, that is to say, small G can only choose to buy or not to buy. For the first repair material, the condition for successful repair of the jth stone bridge is: if and only if hi is greater than pj, Di is greater than vj. Now, the minimum cost of repairing n stone bridges, the minimum demand for beautification, and the cost of m kinds of repairing materials are known, which can increase the beautification value of stone bridges. Please help Xiao G to complete this repairing task.)

STM32F407 SPI1初始化 AD5624寄存器24位直接写入数据 命令位  （直接操作010命令 写入寄存器并更新所有） 地址位 （配置所有DACs） AD5624 写入寄存器 D11-D0 最大值为4095， 此芯片是外部参考电压（例3.3v）,输出电压为0.5v :(4095*0.5/3.3)写入到D11-D0即可。 可能是spi不稳定造成了配置一遍无法输出电压，所以进行了三遍配置才成功。

这是个通讯录工程，其中还有人员分类，还能记录联系人生日，方便好用