基于SPI总线的实验加载智能显示系统  

Intellectualized display system with AVR microcontroller based on SPI interface

作　　者：王丁[1] 王磐炬[2] 

机构地区：[1]兰州交通大学光电技术与智能控制教育部重点实验室,兰州730070 [2]兰州交通大学土木工程学院,兰州730070

出　　处：《电子测量技术》2010年第4期68-71,共4页Electronic Measurement Technology

摘　　要：根据SPI技术原理,以AVR系列的ATmega128L作主机,多个移位寄存器74HC595芯片分别作从机构成串入/并出的8×N位数据传输系统。系统实时监测荷载传感器的输入信号,经10/11位A/D变换后,其量值大小用色块和数字在显示屏上反映出来,并根据不同执行阶段,伴随操作过程实时显示指导性的字符提示。文章给出了SPI总线接口/移位寄存器/点阵LED的电路原理图和相应的ICCAVR编码。最后用一个结构实验教学加载过程演示了该系统的实际使用效果。The main body of a book according to SPI technology principle,the ATmega128L with AVR series does a Maste,and Shift Register 74 HC595 chips assume Slave,compose 8×N bit Serial input/Parallel output data transmission system.To INIT as well as between the both 8×64 data transmission function definition of MCU and Shift Register adopt the ICCAVR language programming without exception.And while demonstrating a version,systematic as early as entering monitoring the force sensor,the real time field reports out on display screen.The article has given SPI out the principle picture linking Shift Register and lattice LED circuit.The article at last uses a engineering structure experiment loading process to have demonstrated the character and artwork effect having held real time display in lattice LED owing system to that the testing signal.

关 键 词：SPI总线 移位寄存器 串入/并出 点阵LED ICCAVR 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]