基于CC3200的无线音视频关键技术研究与实现

发布时间：2018-06-18 06:55

本文选题：CC3200 + WiFi　；参考：《南京邮电大学》2017年硕士论文

【摘要】：当前定位于实现物联网节点的微处理器百花齐放,本文研究学习的微处理器为TI推出的业界首款集成ARMCortex-M4内核和WiFi网络子系统的嵌入式微控制器CC3200,该芯片旨在取代以往的单一MCU搭配WiFi的收发器以实现面向物联网的嵌入式产品开发。本文在充分研究学习CC3200MCU的基础上,二次封装了CC3200外设UART、I2C、I2S、uDMA,降低了通过外设进行控制的难度,提升了基于CC3200开发的友好性。在此基础上设计开发了基于CC3200的无线音频传输系统,该系统以CC3200为主控芯片,TLV320AIC3243为音频的编解码器,不仅实现了音频的本地采集和播放,还可利用WiFi通信将音频数据采集发送并在连接且匹配的套件上进行接收播放。本文编写了摄像头MT9D111的驱动程序,配置其进行JPEG编码格式视频采集,基于此,设计开发了一套基于CC3200的无线视频传输系统,客户端在通过WiFi连接到配置为HTTP Server服务器的CC3200后,可以利用智能设备上的浏览器进行浏览摄像头采集到的视频数据。最后,本文对以上两套系统进行的功能性测试,测试结果表明基于CC3200的无线音频系统和视频传输系统工作正常,基本实现了了开发预期,对市场上物联网乃至智能家居的相关解决方案的选择提供了一项参考。
[Abstract]:At present, microprocessors, which are positioned to realize the node of the Internet of things, are in full bloom. In this paper, the first embedded microcontroller CC3200 which integrates ARMCortex-M4 kernel and WiFi network subsystem is designed to replace the single MCU and WiFi transceiver in order to realize the Internet of things. Embedded product development. Based on the full study of CC3200 MCU, this paper encapsulates the CC3200 peripheral UARTX I2CU I2SUDMA. it reduces the difficulty of controlling by peripheral devices and improves the friendliness based on CC3200. On this basis, a wireless audio transmission system based on CC3200 is designed and developed. The system uses CC3200 as the main control chip and TLV320AIC3243 as the audio codec, which not only realizes the local audio acquisition and playback. WiFi communication can also be used to collect and transmit audio data and receive and play on connected and matched suites. In this paper, the driver of camera MT9D111 is programmed and configured to capture video in JPEG encoding format. Based on this, a wireless video transmission system based on CC3200 is designed and developed. The client is connected to CC3200 configured as HTTP Server via WiFi. The browser on the smart device can be used to browse the video data collected by the camera. Finally, the functional test of the above two systems shows that the wireless audio system and video transmission system based on CC3200 work well, and the development expectation is basically realized. It provides a reference for the choice of the Internet of things and even the relevant solutions of smart home in the market.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN919.8;TN912

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