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使用AT89C52单片机开发，功能是控制直流电机运行，可调速。(Developed with AT89C52 single chip computer, the function is to control the operation of DC motor and speed regulation.)

基于VS2019+VisualGDB的STM32F10X 项目模板 编程语言：C++11 调试方式：Jlink(STM32F10X Project Template Based on VS2019+Visual GDB Programming language: C++ 11 Debugging: Jlink)

经典的Carmack求平方根算法,, 采集九轴传感器数据, 解算姿态(Classic Carmack square root algorithm)

外国10年前用C写的PID调节器源码,带测试,有详细注释.现在难找到(10 years ago with foreign PID controller written in C source code with the test, with detailed notes now difficult to find)

代码测试环境:JME-2核心板+1T指令周期的STC单片机（51内核STC12LE5A60S2)+33M晶振 单片机工作电压3.3V 程序默认IO连接方式： 控制线：RS-P3^5 WR-P3^6 RD-P3^7 CS-P1^0 REST-P1^2 数据线: DB0-DB7依次连接P0^0-P0^7 DB8-DB15依次连接P2^0-P2^7 （8位模式下DB0-DB7可以不连接） 触摸功能连接方式：(不使用触摸可不连接) D_CLK-P1^7 D_CS-P1^4 D_DIN-P3^0 D_OUT-P3^1 D_PENIRQ-P3^4 ( Code test environment: JME-2 core board+ 1T STC microcontroller instruction cycles (51 core STC12LE5A60S2)+ 33M crystal oscillator operating voltage of 3.3V microcontroller IO program default connection mode: Control line: RS-P3 ^ 5 WR-P3 ^ 6 RD-P3 ^ 7 CS-P1 ^ 0 REST-P1 ^ 2 Data line: DB0-DB7 in turn connected P0 ^ 0-P0 ^ 7 DB8-DB15 turn connected P2 ^ 0-P2 ^ 7 (8-bit mode can not connect DB0-DB7) :( Not touch function connections may not be connected using the touch) D_CLK-P1 ^ 7 D_CS-P1 ^ 4 D_DIN-P3 ^ 0 D_OUT-P3 ^ 1 D_PENIRQ-P3 ^ 4 )

说明：  DS1302andLCD1602,danpianji

Cypress CY7C68013A USB GIF 高速接口编程接口FirmWall(Cypress semi cy7c68013a usb gif interface s firmwall)

stm32f4范例，双ADC同时采样，通过DMA的双buffer模式传送，希望对初学者有帮助。范例完整，可直接在stm32f4dis上运行，环境nvision5(example for stm32f4dis,used to describe how to set double ADCs sampling simultaneous ,and send the data through the DMA Double buffer mode )

说明：  LCD显示，实现其基本功能包括显示字符数字等等，在做各类数字显示方面有重要作用，以此来替代数码管。(LCD display, the realization of its basic functions including display characters and Numbers and so on, in all kinds of digital display has an important role, to replace the digital tube.)

说明：  51单片机18b20采集温度，串口打印显示温度值，(51 single chip computer 18B20 collects temperature, and serial port prints and displays temperature value.)