Source-Code

2.4-3.5寸320*240 TFTLCD 控制器HX8347的驱动程序,好多MP4及手机屏采用(2.4-3.5 inch 320* 240 TFTLCD controller driver HX8347, a lot of MP4 and mobile phone screens using)

An effecient algorithm has been proposed by Schmidl and Cox for carrier frequency estimation in orthogonal frequency-division multiplexing systems. The scheme is based on the transmission of a training symbol composed of two identical halves in the time domain. In this paper we extend this algorithm by considering a training symbol composed of L>2 identical parts. This makes it possible to achieve a better accuracy at the cost of some increase in computational load. The estimation range can be made as large as desired without the need of a second training symbol, as required by the Schmidl and Cox method.

计算配电网络潮流 基于40节点计算配电网潮流电压及其电流 (Calculation of distribution network based on 40 tide node voltage and current power flow calculation)

基于51单片机的译码器实验，常见问题： 1. 按下按键无效果 确保连线正确 换根杜邦线试试 将单片机拆下来重新安装下，重启开发板(Decoder Experiment Based on 51 Single Chip Microcomputer, Common Problems: 1. Pressing the key has no effect Make sure the connection is correct Try changing the dobang line Remove the microcontroller and reinstall it. Restart the development board.)

说明：  　　 paek变换 park转换，也称派克变换，英文为Park transformation,为现在占主流地位的交流电机分析计算时的基本变换。在电力系统分析和计算中，park转换具有重要的理论和实际意义。(paek transform park conversion, also known as Park transformation, the English for the Park transformation, for the now dominant in the calculation of AC motor analysis of the basic transformation. In power system analysis and calculations, park conversion has important theoretical and practical significance.)

摘 要 电机转速是电机的一个极为重要的状态参数 文中介绍了几种基本的电机转速测量 方法 并对这些测量方法进行了比较 给出了基于加速度计进行电机转速测量的硬件电路设 计方法和测试系统的工作原理(Summary of the motor speed is an extremely important motor state parameters paper describes several basic motor speed measurement methods and these measurements were compared based on accelerometer gives the motor speed measurement hardware circuit design and test systems Works)

本示波器代码是以stm32f407为硬件基础，通过对12位adc，dma，以及定时触发模式的配置，最终在12864液晶屏上显示波形。(This oscilloscope Code is stm32f407 based hardware, by 12 adc, dma, and configure the timing trigger mode, the final display waveforms on 12864 LCD screen.)

基于stm32的直流步进电机控制程序，可以通过编码器进行控制(Based stm32 DC stepper motor control procedures can be controlled by an encoder)

mega8SPI功能源程序及protues仿真(mega8SPI functional simulation source and protues)

LCD1602液晶显示程序 显示字符 数字(LCD1602 LCD display program digital characters)