TMDXEVM6678L_EVM_A101-1_GBR

stm32l152代码，调试的4463的程序，实现数据的收发，程序未调试完毕，整理了代码，串口接收数据还有问题。(stm32l152 code, debugging of 4463, and to send and receive data, the program is not debugged, compiled code, serial receive data is problematic.)

数码管动态移位显示，值得初学都学习和借鉴，中间有注释(Digital dynamic display)

zigbee开发需要用到的物理地址烧写软件(zigbee development need to use the physical address of the programming software)

说明：  2015年电赛频率计，优点：简单易实现，精密度高(2015 frequency race frequency meter, advantages: simple and easy to implement, high precision)

说明：  了解微波滤波电路的原理及设计方法。

线路通断检测器的设计： 1．用压电陶瓷蜂鸣片作为电声元件。 2．用两根导线作为测试探针 3．线路通断是通过测试电阻的大小来判断，有以下三种情况： （1）若150Ω<Rx<900Ω，则蜂鸣片不发出声响。 （2）若Rx>900Ω或者Rx<150Ω，则蜂鸣片发出间歇式的滴－滴声响。 以上各临界阻值（150Ω和900Ω），允许误差±10％ 4．＋15V直流稳压电源需要设计。 (Line-off detector design: 1. Piezoelectric ceramic buzzer as the electro-acoustic components. 2. As a test probe with two wires 3. Lines off by testing the resistance to determine the size, the following three conditions: (1) If 150Ω <Rx <900Ω, the buzzer is not audible. (2) If Rx> 900Ω or Rx <150Ω, then the buzzer sent intermittent drip- drip sound. Above the critical resistance (150Ω and 900Ω), tolerance ± 10 4.+15 V DC power supply need to design. )

说明：  一个很通用的按键扫描程序，可用于单片机控制中(A very common key scanner can be used in the SCM)

2015年电赛频率计，精密度高，简单易实现，双通道实现捕获(2015 frequency race frequency meter, high precision, easy to implement, dual channel capture)

this program for student. toturial for gpio stm

根据设计任务书的要求，本次设计为110kV 变电站电气一次部分初步设计，并绘 制电气主接线图及其他图纸。该变电站设有两台主变压器，站内主接线分为110kV、 35kV 和10kV 三个电压等级。各个电压等级分别采用单母线分段接线、单母线分段带 旁母接线和单母线分段接线(From the guide of engineering design assignment, we have to design primary power-system of 110kV substation and draw main electrical one-line diagram and others. There are two main transformer in the substation in which main electrical connection can be divided into three voltage grades: 110kV, 35kV with 10kV.It deposits sectionalized single bus bar scheme, sectionalized single and transfer bus bar and sectionalized single bus bar scheme per grade.)