Design And Implementation Of The Multi-function Bluetooth Remote Control

With the rapid development of communications, network technology, the development of the traditional control technology has brought new opportunities. Bluetooth is a short-range wireless communications technology, and its birth is designed to replace the cumbersome cable between a variety of digital hardware, but in fact its potential applications far beyond the imagination of the first Bluetooth technology developers, Bluetooth with its the superior characteristics of safety, low cost, low power consumption, more widely used to market products based on Bluetooth technology.Research of this subject by Wuhan commissioned a high-tech company involved in developing a multi-function Bluetooth remote control The remote control uses CSR's BlueCore04-EXT chip, Bluelab SDK and its Bluetooth solutions on the market,function of a single Bluetooth remote control, the remote control of innovation is that it Bluetooth technology integration with the latest gyro control technology together, the set of wireless keyboard and air mouse, Bluetooth hands-free functions in one. This subject in the full study of the Bluetooth specification version2.0and embedded system development technology based on the completion of the remote control ATmega88microcontroller-based data acquisition and processing system design and Bluetooth-based BlueCore04-EXT chip applications software design.Firstly, on the basis of the Bluetooth protocol stack related content, combined with the hardware structure of the BlueCore04-EXT Bluetooth chip designed remote control of the Bluetooth protocol stack implementation; analysis of demand for products, embedded systems technology, given the design of the overall system program.In this paper, a Bluetooth keyboard and air mouse works and the core components of the data, a custom serial communication protocol between the microcontroller and Bluetooth chip, on this basis, given the detailed design of the ATmega88microcontroller-based data acquisition and processing system process, including system initialization, Bluetooth keyboard and Bluetooth mouse. Based the BlueCore04-EXT-chip Bluetooth application software design, we use the modular idea, Bluetooth remote control, Bluetooth applications layered three logical levels:the underlying transport layer, the middle interface layer and the upper application layer, Our design is based on CSR's Bluetooth solution, the underlying transport layer and the intermediate interface layer is provided in the form of firmware and library, so we focus to achieve the upper application layer, in the HID specification and HF protocols based on this article given in detail the design and implementation of the HID, HF, UART, and sub-modules.Bluetooth technology and knowledge in the process of completion of the entire subject, do more comprehensive research, pass the test, the research project to achieve the desired design requirements, that is a Bluetooth keyboard and air mouse, and Bluetooth hands-free function.