Freescale provided detailed information on the HCS12

一个IIC总线的代码，一个VGA显示文字代码，目前VGA可以显示彩条，但是现实文字较少，一个本科学生兰编写，还不错，共享下，大家参考，IIC编写的比较经典，可以 学习怎么写一个处理器的外设控制器。-IIC bus is a code, a VGA display text code, the current color VGA displays, but less realistic characters, a lan to prepare undergraduate students, but also good to share, the U.S. reference, IIC comparison prepared classics, can learn how to write a processor peripheral controller.

ARM Cortex-M3 系列处理器 的实验代码，内容很全，涉及片内和外围所有部件编程。（Keil环境） -ARM Cortex-M3 family of processors experimental code, content is very wide, involving all the components and peripherals on-chip programming. (Keil environment)

This mainly about the Fat32/16 s specification and some instructions about build the USB Disk ect.

关于LPC2214 升级程序用ISP方法-about update your code by ISP

超声波报警程序，用超声波对距离进行检测，可做倒车时距离的检测-Ultrasonic Alarm

步进电机是将电脉冲信号转变为角位移或线位移的开环控制元件。在非超载的情况下，电机的转速、停止的位置只取决于脉冲信号的频率和脉冲数，而不受负载变化的影响，即给电机加一个脉冲信号，电机则转过一个步距角。-Stepper motor is the electrical impulse signals into angular displacement or linear displacement of the open-loop control components. In the non-overload case, the motor speed, and stop location depends only on pulse frequency and pulse number, regardless of the load change, that is, to add an electrical pulse signal, then turn one motor step angle.

芯片：MC9S12DG128,功能：IIC源代码； 开发环境：Metrowerks CodeWarrior-Chip: MC9S12DG128, function: IIC source code Development Environment: Metrowerks CodeWarrior

UART0 LPC1768代码发送线路或获取行

Example scheduler in hcs12

S3C4510b LCD test