DAIMA

stm32发spwm波 oled显示 ADC采集(Stm32 send spwm wave oled display ADC acquisition)

用STM32做从机，PC机做主机的MODBUS多机通信实验。内附简单的使用说明(MODBUS slave EXP。PC use to master and MCU use to slave.)

采用12位MAX 197对外部信号采样。采用全周波傅立叶积分算法，对采样信号进行处理，对电力系统的电压有效值、功率等特征量进行实时在线监测；采用全数字测量法测量相位差；并采用自适应技术调整采样间隔，消除非同步采样对计算造成的误差，利用PIC18F458捕获功能实时监测电力系统频率波动，修订采样间隔。分析了各量的测量误差，均达到标准。并提供友好的人机交互界面。(used 12 MAX 197 pairs external signal sampling. Using Fourier-Cycle Integration Algorithm for the sampling signal processing, power systems to the RMS voltage, power characteristics of the volume in real-time on-line monitoring; All digital measuring method phase difference; Adaptive technology and the sampling interval, the elimination of non-synchronous sampling of the calculation error using PIC18F458 capture real-time monitoring of power system frequency fluctuations amended sampling interval. The analysis of the measurement error are up to standard. And to provide a friendly man-machine interface.)

Lecture notes on Functions in C++ with Examples

运行于hadoop上的 MapReduce WordCount程序(Running on a MapReduce WordCount program hadoop)

NFC读卡，包括14443-A协议，14443-B协议，18092协议，读模式、卡模式的实现方式(NFC reader, including 14443-A protocol, 14443-B protocol, 18092 protocol, the read mode, the mode of the implementation)

说明：  LCD12864汉字取模拟软件，方便提取汉字代码(Chinese take LCD12864 simulation software to facilitate the extraction of Chinese character code)

mc9s12dg128 freescale16位单片机的pwm模块使用例程(mc9s12dg128 freescale16 the pwm-bit single-chip module using routine)

1-wire"从机"模拟程序, 不是主机,1-wire的主机模拟程序网上很多.使用mega88模拟DS1990A芯片时序, 再加上模拟主机就可以搭建不使用DALASI芯片而使用1-wire协议的系统.编译IAR for AVR 4.20.(1-wire )

利用 USB2I2C开发板和软件实现了对CMOS图像传感器的在线调试。该系统运行稳定，体积小，外围电路简单，可灵活应用于多种CMOS图像传感器在线调试的场合以进行图像质量调整。本系统在调试过程中能生成调试log文件和寄存器配置文件。调试log文件记录调试过程中寄存器更改过程，可方便追踪、查看调试过程；寄存器配置文件保存最终调试结果，方便用户进一步的应用。(Use USB2I2C development board and software realization of the CMOS image sensor circuit debugging. The system is stable, small, simple external circuit can be flexibly applied to a variety of CMOS image sensors in-circuit debugger occasion for image quality adjustment. The system can generate in the debugging process debugging log file and registers the configuration file. Debug log file records the process of debugging registers the change process, can be easily tracked, view the debugging process register configuration file to save the final result debugging, user-friendly application further.)