Design And Implementation Of Smart Speaker Router Based On OpenWrt

As the concept of smart home continues to take root in the hearts of the people,smart speakers and routers as home devices play a vital role in people's daily home life scenes,but in daily use speakers only exist as entertainment service terminals for home audio and video,routers as a service terminal users are mostly only using its emitted wireless signal for Internet access,which is a waste of its remaining resources,and the two are independent individuals in the home scene.In this paper,combined with the school-enterprise cooperation project "Research and Development of a New Generation of Smart Wireless Speaker System ",the two independent individuals of the speaker and router in the home scene are integrated and designed into a unified system,which can not only reduce the cost of the user in the smart home,but also allow the user to have a better use experience.In this paper,based on the SOC chip MT7688 and Open Wrt system,a smart speaker router system is designed and implemented.In addition to the speaker function,which can support three modes of U disk playback,radio playback and DLNA playback,the system also has the function of a router,which allows users to achieve daily Internet access through both wired and wireless means,the system also has a mobile console APP,which can realize the system's one-key network distribution and playback status control functions.The main research content of this paper includes the following aspects:First,the overall framework of the system is designed according to the system design rules and functional requirements analysis,and the overall workflow of the system is explained,and then the relevant theoretical technologies involved in the system design are studied,mainly including Open Wrt system,Uboot,Android system architecture,etc.Secondly,the overall framework of the system hardware and software platform is designed,and the design and implementation process of the hardware and software platform is described in detail.The hardware platform is based on the MT7688 as the core,and the circuit schematic design process for each of its peripheral circuit modules,mainly including DDR2,SPI Flash,power supply,RF,Ethernet port and other hardware modules,is explained in detail,and the relevant rules and precautions to be observed during the PCB Layout design of the hardware circuit are elaborated.The implementation of the software platform mainly includes: the design and porting of the system hardware bootloader Uboot;the tailoring and compiling of the Open Wrt system and its firmware burning;the development and porting of the system Wi Fi driver,audio driver and other related drivers;the design and development of the system communication and control program,where all the functions that the system needs to achieve are realised through the relevant code;the last is the design and development of the Android APP on the mobile control terminal,which mainly includes the layout design of each functional page and the implementation of the relevant control functions.Finally,the designed and implemented system was tested for functionality and accuracy by setting up a corresponding test environment,and the test results showed that the smart speaker router system designed in this paper all met the design requirements.