AR175t

51单片机使用printf输出调试信息，经测试完全可用，加入到自己工程，打开串口调试助手直接能显示内容，串口驱动部分借鉴宋老师手把手教学内容(51 Single Chip Microcomputer Prints Debugging Information with Princtf)

ARMA模型时间序列分析法简称为时序分析法，是一种利用参数模型对有序随机振动响应数据进行处理，从而进行模态参数识别的方法。参数模型包括AR自回归模型、MA滑动平均模型和ARMA自回归滑动平均模型。这里给出了一个求出ARMA模型参数的MATLAB程序。(ARMA model for time series analysis method referred to as time series analysis is a parametric model for the orderly use of random vibration data in response to treatment, thereby to carry out modal parameter identification method. Parameter model including the autoregressive AR model, MA model and ARMA moving average Autoregressive Moving Average Model. Here gives an ARMA model parameters are obtained MATLAB procedures.)

MCP23017 driver for STM32

SHT71温湿度传感器源程序，通过测试(tempreturesensor and Humiture)

平衡车控制器源代码内置pid算法源码陀螺仪dmp姿态结算(DMP attitude settlement of source code gyroscope based on PID algorithm embedded in source code of balanced vehicle controller)

用stm32f103实现adc多路输入，并使用到dma(Adc with stm32f103 achieve multi-channel input, and use the dma)

说明：  ATT7022 电能芯片使用的一个例子，代码齐全，并带仿真。(ATT7022 power chips use an example, the code is complete, and with the simulation.)

正点原子 stm32f10x pwm输出实验(Punctuality atomic stm32f10x pwm output experiment)

说明：  乾勤TC275开发板例程，General Purpose I/O Ports（GPIO）模块例程(Qianqin TC275 DEMO,General Purpose I/O Ports(GPIO))

说明：  YS-F4PRO STM32F407 development board Experiment 15 RTC real-time clock experiment-library function version Supported driver IC models include: ILI9341 / ILI9325 / RM68042 / RM68021 / ILI9320 / ILI9328 / LGDP4531 / LGDP4535 / SPFD5408 / 1505 / B505 / C505 / NT35310 / NT35510 etc.