led2

采用单片机C语言编程，控制矩阵键盘，实现动态扫描心得(matrix keyboard control)

Simple Open Source EtherCAT Slave ==== SOES (Simple OpenSource EtherCAT Slave Stack) is an opensource slave stack that is very easy to use and provides a small footprint. It is a good alternative to more complex stacks on the market. Overview SOES is an EtherCAT slave stack written in c. Its purpose is to learn and to use. All users are invited to study the source to get an understanding how an EtherCAT slave functions. Features as of 1.0.0: - Address offset based HAL for easy ESC read/write access via any interface - Mailbox with data link layer - CoE - Object dictionary - SDO read and write for all sizes including segmented transfers - Easy portable C-code suited for embedded applications - Fixed PDO mapping - FoE with bootstrap template - Support for Little and Big endian targets. - Polling for interrupts

说明：  基于silicon labs的51单片机ADC采集反电动势实现BLDC换相的应用(basic on 51 MCU using ADC sample BEMF for BLDC commutation.)

说明：  CW2015库仑计在STM32下完整代码，通过I2C通信，可以直接编译使用。(coulometer CW2015 code under STM32 MCU)

通过NXP NFC Reader IC RC523 读取Felica (NFC TYPE 3)card，配合NXPRdLib使用（NXP官网下载） (Read Felica(NFC TYPE 3)card with RC523)

说明：  风洞悬浮球程序 本程序来源于正点原子例程 芯片为STM32F103ZET6 超声波测距模块SR04 ILI9341主控的320*240液晶屏 程序使用超声波测距模块SR04测量透明亚克力管子内风洞悬浮乒乓球的位置， 输出给ILI9341主控的320*240液晶屏上，在屏幕上画出球的位置曲线。 可通过串口1输入修改PID参数以及悬浮球目标位置(Translate by GOOGLE from Chinese Wind tunnel suspension ball program This program is derived from the punctual atomic routine The chip is STM32F103ZET6 Ultrasonic ranging module SR04 320 * 240 LCD screen controlled by ILI9341 The program uses the ultrasonic ranging module SR04 to measure the position of suspended table tennis in a wind tunnel in a transparent acrylic tube. Output the position to the LCD screen with 320 * 240 resolution, and draw the position curve of the ball on the screen. Can modify PID parameters and hoverball target position through serial port 1 input)

60秒倒计时显，两位数码管实现，倒计时，通过中断实现，含仿真图程序(60 seconds countdown display)

基于cortex-M3的TCP客户端程序，有上位机软件，及MCU的驱动程序，使用LWIP协议栈。(cortex-m3，lwip，TCP/IP)

利用51单片机做电阻测量仪，实现按键设置阻值自动报警提示(The use of 51 single-chip resistance measuring instrument to achieve automatic alarm button to set the resistance)

飞思卡尔16位单片机MC9S12G128开发板实践教程(Freescale 16-bit microcontroller MC9S12G128 development board practice tutorial )