Abstract: USB protocol and wireless communication protocol are analyzed. Aiming at the application of 2.4 GHz wireless USB devices, a protocol model is proposed at the application layer, which enables a slave device to communicate with multiple master devices at the same time. The direct sequence spread spectrum mechanism and independent communication channel mechanism are improved to reduce interference and conflict in the communication process. An application example is implemented using Cypress CYRF6936 and Freescale MC68HC908JW32 chips.
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