usb_dev_audio

步进电机28BYJ48型四相八拍电机，电压为DC5V—DC12V。当对步进电机施加一系列连续不断的控制脉冲时，它可以连续不断地转动。每一个脉冲信号对应步进电机的某一相或两相绕组的通电状态改变一次，也就对应转子转过一定的角度（一个步距角）。当通电状态的改变完成一个循环时，转子转过一个齿距。四相步进电机可以在不同的通电方式下运行，常见的通电方式有单（单相绕组通电）四拍（A-B-C-D-A。。。），双（双相绕组通电）四拍（AB-BC-CD-DA-AB-。。。），八拍（A-AB-B-BC-C-CD-D-DA-A。。。）(Stepping Motor 28BYJ48 four-phase eight-phase motor, the voltage DC5V-DC12V. When a series of continuous control pulses are applied to the stepper motor, it can be continuously rotated. Each pulse signal corresponds to the stepper motor of a phase or two-phase winding power state change once, also corresponds to the rotor through a certain angle (a step angle). When the change in the power-on state completes one cycle, the rotor turns one pitch. Four-phase stepper motors can be operated in different power-up modes. The common power-up modes are: single-phase winding power (ABCDA ...), double (dual-phase winding)-DA-AB-...), eight beats (A-AB-B-BC-C-CD-)

基于51的DT11温度检测，基于51的DT11温度检测(Based on 51 of dt11 sensor temperature measurement procedures, based on the temperature sensor 51 dt11 program)

C8051F320 单片机是 Silabs 公司推出的带 USB Device 接口的增强型 51 单片机，其兼容传统 51 架构，并在此基础上大大增强。基于大多数电子工程师 都熟悉经典的 51 系列及其开发环境， 我们选定这颗 MCU 作为对象进行 USB 开 发，将更多人带入 USB 开发的大门。关于 C8051F320 内部资源详情，请查看 datasheet。 本开发板的重点是针对 USB 应用， C8051F 系列单片机其他外设开 发过程将被简化以节约用户的学习、开发成本(C8051F320 microcontroller is Silabs company launched an enhanced interface with USB Device 51 SCM, which is compatible with the traditional 51 architecture, and greatly enhanced on this basis. Based on most electronic engineers Are familiar with the classic 51 series and its development environment, we have chosen as an object USB MCU Fengyun open Hair, the more people into the USB development door. About C8051F320 internal resources, please see the datasheet. The focus is on the development board USB application, C8051F MCU open other peripherals Hair process will be simplified to save the user s learning, development costs. )

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)

说明：  国外标准IEC6116-3工业自动化的编制(discripe the international standard)

电协开发板 C51单片机程序，用于实现单片机的流水灯输出(Electric Association C51 microcontroller development board procedures for the realization of single-chip light water output)

AGV小车上位机控制程序,通过TCP/IP协议来进行数据的传送(AGV car PC control procedures, through the TCP/IP protocols for data transmission)

msp430的adc测试程序，如果需要ADC学习的，可以看看，或许有些帮助。(msp430 of adc testing procedures, if desired ADC to learn, you can look, maybe some help.)

cd4052用stm32来写的程序，，实现电子开关电路 (CD4052 uses STM32 to write the program, the electronic switch circuit)

本作品以MSP430单片机为核心， 基于DDS原理，通过查表方式输出步进量为10HZ，频率为100HZ~2KHZ的正弦波。两路被测信号通过过零比较、异或和低通滤波整流，实现了对相位差的测量，误差小于(This works with MSP430 microcontroller as the core, based on DDS principle, by look-up table output step sizes for the 10HZ, frequency of 100HZ ~ 2KHZ sine wave. Two by the signal zero-crossing comparator, XOR, rectification and low-pass filtering, the realization of the phase of the measurement error is less than)