CP1H_USB

说明：  本PDF文件为市电电压频率测量计的设计说明书！从中能了解相关的电路设计(The PDF file is mains voltage frequency meter design manual! From which to understand the relevant circuit design)

电子称重的实现首先是通过压力传感器采集到被测物体的重量并将其转换成电压信号。输出电压信号通常很小，需要通过前级信号处理电路进行准确的线性放大。放大后的模拟电压信号经AD转换进入主控单片机中，再将结果显示在人机界面。(The realization of electronic weighing is firstly to collect the weight of the measured object through a pressure sensor and convert it into a voltage signal. The output voltage signal is usually very small, which requires accurate linear amplification through the front signal processing circuit. The amplified analog voltage signal is converted into the main MCU by AD, and the results are displayed in the man-machine interface.)

本实验将实现如下功能：本章我们在UCOSII里面创建3个任务：开始任务、LED0任务和LED1任务，开始任务用于创建其他（LED0和LED1）任务，之后挂起；LED0任务用于控制DS0的亮灭，DS0每秒钟亮80ms；LED1任务用于控制DS1的亮灭，DS1亮300ms，灭300ms，依次循环。(This experiment will achieve the following functions: in UCOSII, we create three tasks: start task, LED 0 task and LED 1 task, start task for creating other tasks (LED 0 and LED 1), then hang up; LED 0 task for controlling the brightness of DS0, DS0 80 ms per second; LED 1 task for controlling the brightness of DS1, DS1 300 ms. 300 ms, cycle in turn.)

用于学习stm32单片机的一些扩展例子，对于学习stm32 很有帮助(For learning stm32 SCM extensions examples)

虚拟信号采集分析器 1）：利用信号发生器产生不同信号（信号的相关参数可调） 2）：在信号上叠加白噪声。 3）：对上述信号进行采样（采样频率可调） 4）：在采样的过程中利用均值滤波（每三个点取均值） 5）显示采样后的波形，并对其进行频率分析。 6）：将采样后的波形与原波形做比较（在同一坐标系中显示(Virtual signal acquisition Analyzer 1): Using the signal generator to produce different signals (signals adjustable parameters) 2): white noise superimposed on the signal. 3): The above signal is sampled (sampling frequency adjustable) 4): Using the mean filter (averaging three points each) 5) during the sampling process after sampling the waveform display, and its frequency analysis. 6): After sampling the waveform is compared with the original waveform (shown in the same coordinate system)

STM32通用工程模板，直接使用，不需要新建工程。。。。。。。。。。。。。。。。。。。。。。。。(STM32 General Template)

stc51单片机linux下的串口下载程序，具有可视化界面。在下载的时候请注意选择较低的频率。(stc51 SCM under linux download, visual interface. Note that when you select a lower frequency of downloading.)

说明：  ADC0809的接口测试程序。写得很好，大家学习一下。(ADC0809 interface test procedure. Was very well written, we learn about.)

CC2430单片机的内置温度传感器测试代码，是ADC的一部分，适用于初学者学习使用。(The CC2430 single-chip built-in temperature sensor test code is part of the ADC, for beginners to learn to use.)

说明：  一个万能的键盘扫描程序，采用宏定义的方式屏蔽了硬件，能够非常方便地移植到任何一款MCU上(A universal keyboard scanning procedures, the use of macro way of shielding the definition of the hardware, can be easily ported to any MCU on a)