i2c

说明：  cordic算法的C语言实现，包含了相应C语言程序，十分珍贵(cordic algorithm C language, contains the corresponding C language procedure is very valuable)

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)

一个鼠标基于C8051f340为核心的USB鼠标程序，在开发板上已调可用。用Keil打开。(A mouse-based core C8051f340 USB mouse program has been transferred is available on the development board. Opened with Keil.)

利用51单片机完成16*16 点阵led屏的字符显示(16*16 led display)

说明：  通过使用STM32F407内部的ADC资源，开发出的一款简易版示波器，能够识别并画出波形，显示频率、幅值等要素，可以调Time ，VPP level等。代码简单易读。(By using ADC resources in STM32F407, a simple version oscilloscope is developed, which can recognize and draw waveforms, display frequency, amplitude and other elements, and adjust time, VPP level, etc. The code is easy to read.)

说明：  STC8G中文数据手册，包含封装，引脚功能。 包含各种功能的测试代码(Stc8g Chinese data manual, including package, pin function. Contains test code for various functions)

德州仪器 的TPL0501 数字电位器的驱动程序，包含.h文件和.c文件(Texas Instruments TPL0501 digital potentiometer driver included. H files and the .c file)

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.

microcontroller programing

基于xs128的超声波测距及oled显示程序(Display program is based on the ultrasonic ranging and oled xs128)