网际互连协议(Internet Protocol,IP)音箱作为一种网络音频播放设备,是公共广播系统的重要组成部分.设计一种基于STM32 的IP音箱主控板卡.该板卡使用STM32F407 作为主控平台,通过精简介质独立接口(Reduced Media Independent Interface,RMII)与LAN8720 以太网收发器进行网络数据交互,采用VS1063作为音频编解码芯片,并基于C语言设计和实现了IP扬声器主控软件.该系统具有网络音频实时播放、自动音量调节以及扬声器状态监测功能.通过自研的上位机软件进行测试,主控软件程序运行稳定,实时语音延迟小于100 ms,成功实现了预期设计功能.
Design and Implementation of the IP Speaker Controller Board Based on STM32
Internet Protocol(IP)speaker,as a network audio playback device,is an important part of public address system.Design an IP speaker main control board based on STM32.The board uses STM32F407 as the main control platform,and communicates with LAN8720 Ethernet transceiver through reduced media independent interface(RMII),and uses VS1063 as the audio codec chip,and designs and implements the IP speaker main control software based on C language.The system has the functions of real-time network audio playback,automatic volume adjustment and speaker status monitoring.Tested by the self-developed upper computer software,the main control software program runs stably,and the real-time voice delay is less than 100 ms,which successfully realizes the expected design function.
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