polymer-tutorial-master

手持振动仪，自动通过傅里叶变换，提取峰峰值，来自动调整震动的幅度，(Handheld vibration, automatic Fourier transform, peak extraction, to automatically adjust the amplitude of vibration,)

实现单片机演奏简单的声调乐曲，外连无源喇叭效果较好(Simple tonal music microcontroller played outside with passive speakers better)

实时时钟芯片ds1302驱动程序，并配合8位数码管显示。(Real-time clock chip ds1302 driver, and with the 8-bit digital tube display.)

这是一个厅在ＤＳ１８Ｂ２０数字温度计的Ｃ程序，精确度达到０．５摄氏度(This is a digital thermometer DS18B20 Office of C procedures, accuracy of 0.5 degrees Celsius)

说明：  uart DMA接收任意长度数据，稳定可靠(UART DMA receives data of arbitrary length and is stable and reliable)

说明：  51实验21：DA数模转换 DA-PWM输出实验 * 实现现象：下载程序后DA模块上的指示灯呈呼吸灯效果，由暗变亮再由亮变暗(51 Experiments 21:DA Digital-to-Analog Conversion DA-PWM Output Experiment* Realization Phenomenon: After downloading the program, the indicator lamp on DA module shows the effect of breathing lamp, which changes from dark to light and then from light to dark.)

说明：  基于MSP430F5438A的AD9854驱动，AD9854的DDS核具有48位的频率分辨率（在300M系统时钟下，频率分辨率可达1uHZ）。输出17位相位截断保证了良好的无杂散动态范围指标。AD9854允许输出的信号频率高达150MHZ(Based on the AD9854 driver of MSP430F5438A, the DDS core of AD9854 has a frequency resolution of 48 bits (up to uHZ at 300 M system clock). Output 17-bit phase truncation ensures a good dynamic range index without spurious. AD9854 permits up to 150 MHZ of output signal frequency)

说明：  STM32F407 开发EC20代码，EC2状态机代码TCP传GPS数据 - APPMQTTIMEI定义3.15(STM32F407 develops EC20 code, EC2 state machine code TCP transmits GPS data - APPMQ TIMEI definition 3.15)

说明：  第一部分程序不依赖开发板，直接仿真运行即可(The first part of the program does not rely on the development board, direct simulation can be run)

stm32 mini板dht11温湿度测试程序(stm32 mini board dht11 temperature and humidity testing procedures)