DSP与ZLG7290的人机接口设计  

Design of Man-machine Interface of DSP and ZLG7290

作　　者：艾红[1] 

机构地区：[1]北京信息科技大学自动化学院,北京100192

出　　处：《计算机测量与控制》2013年第6期1584-1586,共3页Computer Measurement &Control

摘　　要：ZLG7290B是数码管显示驱动及键盘扫描管理芯片;基于DSP的智能仪表人机接口功能实现采用ZLG7290B与DSP的连接,符合I2C总线协议,给出了ZLG7290B主电路连接图和键盘电路连接图;分析了ZLG7290寄存器与指令运用和I2C总线时序;阐述了键盘显示程序设计和流程图主要思路,设计了应答位响应函数和读取数据函数,实现了多通道的数据显示。The ZLG7290B is management chip of digital tube display driver and keyboard scan. Intelligent instrument interface functions based on the DSP are implemented by ZLG7290B and DSP connection. It is accorded with the I2C bus protocol. The ZLG7290B main circuit connection diagram and the keyboard circuit connection diagram are given out. Analysis of the ZLG7290 registers and instruction application and IZC bus timing is analyzed. Main thought of keyboard display program design and flow chart are expounded. Response bit of response function and reading data function are designed. Multi--channel data display is realized.

关 键 词：人机接口 DSP 键盘 显示 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]