PCA--stm32

本项目是基于Cortex-M3 的地沟油快速检测装置，旨在实现“地沟油”快速，现场检测。MCU控制可编程的直接数字频率合成器（DDS）产生正弦激励信号，经过可变增益放大器（VGA）和低通滤波器（LPF）作用于食用油阻抗传感器（实验室制作）信号经过仪器放大器送入微控制器（MCU）的模数转化（ADC）通道，MCU对采集的信号通过快速傅里叶变换（DFT）处理，实现食用油阻抗与相角的检测；USB和以太网接口，可与计算机通讯，以便对采集的数据进行存储和分析。(The project is based on the Cortex-M3 waste oil rapid detection device designed to achieve " waste oil" rapid, on-site testing. MCU control programmable direct digital frequency synthesizer (DDS) generates sinusoidal excitation signal through a variable gain amplifier (VGA) and a low-pass filter (LPF) acting on the oil-impedance sensor (lab produced) to send signals through the instrumentation amplifier into the microcontroller (MCU) modulo conversion (ADC) channels, MCU signal acquisition via Fast Fourier Transform (DFT) processing, oil resistance and phase angle detection USB and Ethernet interfaces, and computer communication, in order to collect data for storage and analysis.)

用于MMC桥臂计算，特别适用于较为复杂的MMC平衡子模块电容电压的计算(MMC is used to calculate the arm, especially for more complex calculations MMC submodule capacitor voltage balance)

51单片机控制智能小车循迹小车c源程序5路循迹(51 MCU control smart car)

STM32的USB声卡程序。内有详细的注释和文档。很好的学习资料。(STM32 USB sound card program. There are detailed notes and documentation. Good study materials.)

STC12C5204AD单片机控制单个二极管闪烁源代码，二极管由138译码器使能，另一端单片机IO口控制，采用延时程序，是单片机初学者很好的学习源代码(STC12C5204AD flash microcontroller source code to control a single diode, diode 138 by the decoding is enabled, the other end of the single-chip IO port control, using the delay procedure is a very good chip for beginners to learn the source code)

本程序可以读取电离层IONEX数据，可以运行，程序流畅简洁，清楚易懂!!(The program can read the ionosphere IONEX data, you can run the program smoothly simple, clear and understandable!!)

用C语言实现matlab的butter函数中低通和带通功能,高通和带阻没写,有兴趣的可以自己加入.(Using C language to achieve matlab butter function low-pass and band-pass function, high pass and band stop did not write)

这是一款模拟modbus从机的程序，可以方便用户调试modbus程序，本程序完全免费。(This is a simulation of the modbus from machines, can facilitate users to debug the modbus program, this program is completely free. )

简单打字速度练习，采用倒计时10分钟进行速度练习。(Simply typing speed exercises for 10 minutes using the countdown speed exercises.)

电力系统电度表通讯协议，主要针对DL645协议标准(Power system meter communication protocol, mainly for DL645 protocol standards)