基于MSP430单片机的无线LED广告屏设计.doc

基于MSP430单片机的无线LED广告屏设计 摘 要 LED点阵显示屏的发展前景极为广阔，为使该模块LED显示屏控制系统具有更加方便和灵活性，本文对系统的硬件做了精心设计。本文设计的主体思想是通过主机将实时时间，采集的环境温度以及光照信息，由无线模块传送到从机，动态显示在广告屏上。综合多方面的因素，最终确立了设计方案：主控制器选用MSP430单片机，点阵屏选择LED点阵单色图文显示屏，无线模块采用NRF2401射频收发芯片。 基于单片机介绍了16*16LED显示屏的设计与制作过程，内容包括LED显示屏的硬件电路、PCB设计、C语言程序设计与调试等方面，涉及到单片机电子产品设计和制作方面的各个环节，认识单片机的基本结构，工作原理及应用方法，并提高单片机知识技术的运用能力。 关键词 单片机；点阵；无线；LED广告屏；NRF2401 The Design of Wireless LED Advertising Screens Based on MSP430 Abstract The development of LED display has a far-range prospect. To make this modular of LED display control system more convenience and flexible .This project made elaborate design of system hardware. The main idea of the design is through the host will real-time time, acquisition environment temperature and light information transferred by wireless module, dynamic display from machine, in advertising screen, comprehensive in many factors. The final design is that the main controller chooses MSP430 microcontroller, bitmap screen choice of LED dot matrix monochromatic graphic display, wireless NRF2401 transceiver module USES chips. This project introduces the design of 16*16 LED screen based on SCM and manufacture process, which content includes the LED display hardware circuit, PCB design, C language program design and commissioning etc, and involves microcontroller electronic products design and manufacture aspect the each link. Besides , understanding the basic structure, microcontroller working principle and application methods, and improve the utilization ability microcontroller knowledge technology. Keywords MCU; Dot matrix; Wireless; LED advertising screen; NRF2401 目 录 第1章 绪论 1 1.1 引言 1 1.2 研究课题的目的与意义 1 1.3 课题研究的主要内容 2 第二章 论文方案设计 4 2.1 系统方案总体分析 4 2.2 单片机的选择 4 2.2.1 C51单片机 4 2.2.2 Mega16单片机 5 2.2.3 MSP430单片机 5 2.3 无线模块的选择 5 2.3.1 NRF905模块 5 2.3.2 CC1020模块 6 2.3.3 NRF2401模块 6 2.4 LED广告屏的选择 7 2.4.1按颜色分类 7 2.4.2按显示器件分类 7 2.5 LED驱动模块 7 2.5.1静态锁存 7 2.5.2动态扫描 7 2.6 最终方案的确定 8 第三章 系统硬件设置 9 3.1 硬件电路的总体设计 9 3.2 单片机最小系统 10 3.2.1