ARM嵌入式教辅系统的教学实践

Teaching Practice of Teaching Aid System for ARM Embedded Systems

为配合教学需要,设计了以ARM LPC2138/48 MCU为核心的教学辅助系统。系统包含了最小系统、串行通信及程序下载接口,矩阵键盘和可以用作中断输入的独立按键、字符和点阵LCD等输入/输出人机界面接口;配备了规范完整的Keil工程模板、完整的Proteus电路原理图和相关硬件模块的应用程序包。在嵌入式系统课程具体教学过程中,以教辅系统为支撑,采用"引导-模仿-实践"渐进式教学模式,一例一问,逐题增加,承前启后,精心设计的教学内容、实验案例;结合例程分解、项目驱动等模块化教学方法,解剖实际应用项目,帮助学生掌握嵌入式系统应用与开发的基本技能,培养学生一定的自主创新能力,该教辅系统对初学者教学辅助效果非常明显。

According to the teaching needs,a teaching aided system based on ARM LPC2148 MCU was designed.The teaching aided system consists of a mini system,serial communication and program download interface,matrix keyboard and individual keys that can be used as interrupt inputs,characters and dot matrix LCD and other input/output interface.The software includes a standard project template of Keil,the complete Proteus circuit schematic diagram,the SDK of relational hardware modules.In the course of embedded systems,the teaching content and experimental cases were prepared carefully based on the teaching aided system by using the " guide-imitation-practice" teaching method,which means teaching content is explored by examples and questions,step by step,one after another.With the combination of routine decomposition,project driven and other modular teaching methods,the practical application of the project is hoped to help students master basic skills of the application and development of the embedded system,and cultivate students＇ ability of self-innovation.The teaching aided system has been proved to play a good supporting effect for students in the beginning.