Research And Development Of Smart Community Broadcast Information Terminal Based On ARM+Linux

With the continuous improvement and development of mobile Internet and embedded system application technology,more and more network terminals are displayed in front of consumers,such as mobile phones,tablets and other embedded general-purpose devices.There are also various kinds of embedded special terminals in the market,such as smart meters,remote controllers of various electrical appliances and so on.As a result,all kinds of terminals have rapidly entered the market,and a prosperous scene has emerged.After the 21 st century,with the acceleration of China's aging,the elderly will not be skilled in operating general products such as smartphones,tablets and PCs.In this context,the author wants to design an embedded special terminal for community residents,especially for the elderly in the community.This terminal overcomes the complex control process under the general product system,greatly simplifies the use process,and designs a smart community broadcasting information terminal display system based on the community server and the underlying client architecture using the community's complete network environment.The client uses the S3C2440 CPU of ARM9 architecture as the core chip.On this basis,the peripheral circuit is built and the linux operating system is transplanted.The 4.3 inch LCD display of the display device is used in the peripheral of the single board.The input device is triggered manually by keys.When the CPU obtains the corresponding trigger data,it immediately calls the various community files in the display through the system,and the contents of the files contain the sound,text and picture file information.They are switched one by one to display on the LCD screen.This paper first introduces the basic structure of the system,then introduces the design of the single board hardware circuit,and then introduces the work and design process of the software system,software and hardware debugging,unit testing of each module,and overall testing,and completes the design objectives of this topic.