stepmotor--by-L297-and-L298

固体材料超弹性和弹塑性计算程序，包含多种材料模型和损伤判据(Program for implicit small and large strain finite element analysis of hyperelastic and elastoplastic solids.)

说明：  随着人们对光谱测量仪器灵活性、 微型化的要求 ,便携式光纤光谱仪在实际生产测量中的需求也越来越大 ,对其测量性能的要求也越来越高。根据光纤光谱仪的测量原理 ,利用波长与CCD探测器单元格一一对应的关系 ,提出了一种波长校正的方案 ,波长校准精度可以达到0.5nm ,重复性达0.1nm。(Wit h people′ s requirement for spect rometer are agility and micromation , portable fiber spect rometer is needed more and more widely in practical measurement , and t he requirement for it s measurement capability get s more and more higher . According to t he measurement principle of t he fiber optic spect rometer and the cor responding relationship between t he wavelengt h and the CCD detector′ s cell , a wavelengt h correction met hod is p ut forward in t his paper , t he wavelengt h p recision can reach 0. 5nm and t he repeatability can reach 0. 1 nm.)

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.)

说明：  使用单片机利用超声波测距，里面包括源代码(Using Single Chip Microcomputer to Measure Distance by Ultrasound)

51单片机驱动74ls164程序 (51 Microprocessor 74ls164 program)

说明：  51单片机双机通信程序，keil环境。。。。。(51 keil communication between two machine)

RS232串口通信接收发送数字发送：从单片机P1、P2口输入按键信号， PC机RS232C口接收。 接收：PC机由RS232C口发送数字时，P4口连接的数码管显示。需要发送十六进制数，例如， 十进制数3，应该发送03(RS232 serial communication to send digital receiving )

AD1939的数据手册，多通路的模数转换器，ADSP21489板上有(AD1939 data manual, multi-channel analog-to-digital converter, ADSP21489 board)

硬件TCPIP协议栈芯片W5300的使用例子代码,该芯片内部通过硬件实现了TCPIP协议栈,可减少CPU运行协议栈的开销.(Hardware TCPIP protocol stack chips W5300 examples of the use of code, the chip hardware implementation of the internal adoption of the TCPIP protocol stack can reduce the CPU overhead of running the protocol stack.)

STM32 的串口控制,通过串口调试助手，让STM32 与PC机通信(Serial control of the STM32 STM32 family to communicate with the PC through the serial port debugging assistant)