PT2258-driver

基于STC单片机的CAN总线通信程序代码(STC microcontroller-based CAN bus communication program code)

基于 dspic33 的 bldc 直流无刷电机 pwm 调速控制(BLDC PWM motor speed control based on dsPIC)

说明：  读取OV2640采集的图像，二值化输出到LCD(Read the image captured by OV2640 and output it to LCD by binarization)

基于51单片机的 超声波测距 用于智能小车的循迹 蔽障(Ultrasonic distance measurement based on 51 single-chip microcomputer used for tracking of intelligent car escapes)

基于51的C语言频率计，内涵仿真图，以实现空能(Based on 51 C-language frequency meter, meaning simulation diagram, in order to achieve air can)

c8051F040 单片机 DAC调试程序(c8051F040 microcontroller DAC Debugger)

此代码为在proteus中仿真代码，实现功能：利用液晶显示时间，通过按键调节时分秒。(This code is a simulation code in proteus. It realizes the function of adjusting the time and seconds by keystrokes using liquid crystal display time.)

说明：  新唐N76e003例程，有定时器，IO口，ADC，掉电保存，在线升级等等(New Tang n76e003 routine)

滤波器广泛应用于数字信号处理、通信、自动控制领域,但设计可变宽频带有源滤波器则比较困难。利用单片机控制参数可编程的双二阶通用开关电容有源滤波器,精确设置有源滤波器的中心频率f，品质因数Q及有源滤波器的工作方式。本系统主要分为两个部分:即程控滤波器和程控放大器。程控放大器电压增益为40dB，通过单片机控制DA进行分压，可精确实现要求的10dB步进，误差小于0.5 ，通带为100Hz-500KHz，输入电压峰－峰值范围为10mV，在输入范围内无明显失真。由MAX264为核心的滤波器，可设置为高通、低通滤波器。通过单片机直接给出控制频率，使-3dB截止频率在1KHz-20KHz内可调，步进1KHz，误差小于1 。整个系统以52单片机为控制核心，电路简单，性能稳定，且具有较高精度，滤波参数调节通过单片机控制，较为方便。(Filters are widely used in digital signal processing, communications, automatic control area, but the design variable wideband active filter is more difficult. Control parameters using single-chip programmable universal switched-capacitor biquad active filter, active filter accurately set the center frequency f, quality factor Q and the active filter works. The system is mainly divided into two parts: the program-controlled filters and programmable amplifiers. Programmable amplifier voltage gain of 40dB, the DA through the partial pressure of single-chip control, can accurately achieve the required 10dB step, the error is less than 0.5 , passband to 100Hz-500KHz, input voltage peak- the range of 10mV, the input range no significant distortion. By the MAX264 as the core of filter can be set to high pass, low pass filter. Given directly by the microcontroller controls the frequency, the-3dB cutoff frequency at 1KHz-20KHz adjustable, step 1KHz, error is less than 1 . The entire system for)

用于绘制LLC的增益曲线。把这段代码放到Matlab里，运行，就能够绘制出来LLC的增益曲线了。(This code is used to draw the gain curve of the LLC converter.)