pcm990-baseboard

说明：  件设计思路是利用 MS 的定时器 B 中断执行相应的中断服务程序来产生舵机用多 路 PWM 波.4的 系 统 主 时 钟 频 率 取 8 MHz，设每个定时周期取 250/ =31.25 μs，(The x medium-density performance line family incorporates the highperforfrequency, highspeed embedded memories (Flash memory up toytes), and an extensive range of s and peripherals connected to two APB buses.)

说明：  ADI 公司的高精度、三相电能测量芯片 ADE7878 进行电能计量，包括有功、无功和视在电能的计量。实现了电压、电流有效值测量，功率因数测量，以及电压跌落、过压和过流检测、相序检测等电能质量测量功能(ADE7878 goes beyond Class 0.2 Accuracy specification for Active Power Improves Active energy accuracy over line frequency to 0.1% for +/-10% line frequency)

通过STM32的USB实现对SD卡和内部Flash，Nandflash的读写(access to the internal flash,SD card,and Nand flash using stm32)

arm7平台上的点阵屏操作，16X16的点阵屏，可显示汉字信息(ARM7 platform dot matrix screen operation, 16X16 lattice screen, can display Chinese character information)

lm3s9b92 source file from stellaris sdk

nrf24l01和avr配合使用的东西哦，很好很强大。(nrf24l01 and avr with the use of things Oh, very very strong.)

说明：  物联网温测项目,基于QT的GUI开发，学生作品。(IOT temperature measurement project, GUI development based on QT)

its a code to draw a two sine waves that combine when period and harmonics are adusted

Using MATLAB compressed sensing, BP neural network function fitting and pattern recognition, This is a useful frequency estimation algorithm matlab simulation program.

基于STM32的流水灯程序，STM32的入门程序！(STM32 of light water program)