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说明：  STM３２F１０３控制独立按键和矩阵按键，基于keil4(STM32F103 controls independent keys and matrix keys based on keil 4)

带通滤波器，C语言实现，可用于单片机。欢迎下载(Bandpass filter, C language implementation, can be used for single-chip. Welcome to download)

这个系统是我根据常州拨云拨号器的硬体写的应用系统,完全兼容拨云拨号器的硬件和全功能实现,能实现自动拨接语音ip接入号,设定十组,各种号码路由权限设定!反极侦察产生!(The system is under the clouds and Changzhou dialers hardware write applications, fully compatible with the clouds and dial-up hardware and achieve a fully functional, able to automatically dial voice ip access, set 10 group, various permissions routing numbers! very anti-reconnaissance produce!)

基于单片机的点阵屏，595 Z字移位，1/4扫描。(Microcontroller-based dot-matrix screen, 595 Z character displacement, 1/4 scan.)

ns2_zigbee ========== Performance evaluation of Zigbee based on NS2 This repositories includes the codes of my undergraduate thesis. 1. zigbee.scn: network topology in 3D 2. zigbee.tcl: network script written in tcl 3. thr_drop_delay.awk: eualuation script written in awk 4. data: results of delay, throughput, jitter, and packet loss rate 5. out: figures of results 6. demo: demos of nam 7. thesis How to 1. make sure zigbee.scn and zibee.tcl are in the same folder 2. cd to the folder by terminal 3. run ns zigbee.tcl 4. run awk -f thr_drop_delay.awk zigbee.tr 5. run gnuplot xxx.dat

基于51单片机的IIC总线的C语言编程，通过51单片机来模拟IIC总线协议(Based on 51 MCU IIC C language programming bus by the microcontroller 51 to simulate the IIC bus protocol)

利用单片机IO口模拟UART程序,系统用了一个定时器和一个外部中断,外部中断主要是用来检测串口起始位的到来。(IO mouth simulation UART program, microcontroller system with a timer and an external interrupt, external interrupt is mainly used to detect the arrival of the start bit serial port.)

说明：  通过max30102获取血氧浓度，并计算心率，通过uart1输出(Obtain the blood oxygen concentration through max31002, calculate the heart rate, and output through uart1)

说明：  该源码实现51单片机之间符合modbus通信协议的通信(This code can achieve communications between MCS51 by modbus protocol. )

PMSM 电机FOC控制单片机程序，SPANSION Cortex-M4 单片机(PMSM FOC control sample code)