Research And Design Of Multi-Functional Wireless Mouse

With the improvement of living standards, the computer has become an industrial production, science and technology research and development, entertainment and other aspects of life necessities. People operating the computer mouse and keyboard is the most important peripheral, with the wireless communication technology, wireless mouse and keyboard will gradually replace the wired mouse and keyboard to become mainstream products. USB interface as a rapid development in recent years, communications technology, and gradually replaced the PS2 RS232 serial interface and serial interface communication. Computers in production today, with very few PS2 RS232 serial interface and serial interface, so most of the current use of USB mouse and keyboard communication.The development of the wireless mouse and keyboard combination, this paper uses 2.4GHz RF wireless communication chip nRF24L01 by PDIUSBD12 achieve USB communication and the use of low-power MSP430 chips as the main chip, realized with a multi-functional wireless mouse keyboard functions.The development of the wireless mouse and keyboard combination, this paper uses 2.4GHz RF wireless communication chip nRF24L01 by PDIUSBD12 achieve USB communication and the use of low-power MSP430 chips as the main chip, realized with a multi-functional wireless mouse keyboard functions.(1)Mouse and keyboard in part by the main controller, data acquisition and wireless communications components. Master controller uses low power MSP430F413 microcontroller, the host controller hardware and software design takes into account the application of various low-power mode, so that battery-powered device can be used under the conditions of a longer time.Optical signal sensor uses ADNS-5030, for the acquisition of the mouse displacement.Part in the design of signal acquisition, analysis and a reasonable choice of time interval, the effective data collection, data will neither overflow will not result in the collection too often a result of the loss of data during transmission. Part uses 2.4GHz wireless frequency nRF24L01, focus on solving the combination of antenna matching network at the same time, build a reasonable communication protocol, communication resources can be effectively used to ensure the transmission quality. (2) The receiver section by the main controller, wireless communication and USB communication components. Master controller uses the more common 89C51, some with 2.4GHz wireless frequency nRF24L01, part of the mouse and keyboard to match.USB communication part is PDIUSBD12, with the main controller through the parallel port connection, through the USB 1.1 communication protocol of the study, enumeration implements the USB mouse and keyboard combination device.