matlab_simple_pid_model

交通灯程序，可以让交通灯倒计时，有五种模式可调(Traffic light procedure)

说明：  STC12C5A60S2经典例程.......(STC12C5A60S2 typecal example)

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)

内有PID源码驱动，包含位置式PID和增量式PID。PID通过结构体定义，可同时定义多套参数，并同时使用，并不会相互影响。(There is a PID source driver, including position PID and incremental PID.PID through the structure definition, can be defined at the same time multiple sets of parameters, and use at the same time, will not affect each other.)

正点原子STM32F103精英板按键输入例程(Punctual Atom STM32F103 Elite Board Key Input Routine)

MSP430 我们全国电子竞赛老师给的资料(MSP430 National Electronic contest teacher gave us the information)

嵌入式系统：基于ARM920T嵌入式音视频压缩系统设计(Embedded system: based on the ARM920T embedded audio and video compression system design)

33FJ128MC510A的熔丝位配置代码，经过加密。下载端口为PCG2(33FJ128MC510A fuse configuration)

OBD II scan tool (ISO15031-4)

AES128/196/256 加解密源码，可实现ECB模式加密，HEX输出。密码及明文没有补齐功能，需手动补齐。无需特殊库文件，适合单片机使用。已测试，可正常使用。(AES128/196/256 encryption source code, can achieve ECB mode encryption, HEX output. The password and the plaintext without the need to manually fill up function. No special library files, suitable for single use. Has been tested, can be used normally.)