Serial transceiver interface module and usb interface module share port circuit and working method

Abstract

The invention relates to a serial transceiving interface module and USB (universal serial bus) interface module shared port circuit and a working method, in order to solve the problem that peripheral interface modules of an embedded system are mutually independent and incompatible and cannot share connection ports. The shared port circuit comprises a single chip microcomputer and a USB port, the single chip microcomputer comprises a serial transceiving interface module, a USB interface module, an interface shielding unit, a detection unit and a master control unit, the serial transceiving interface module and the USB interface module are connected with the USB port, the interface shielding unit is connected with the serial transceiving interface module and the USB interface module so as to block communication of the interface module, the detection unit is connected with the interface shielding unit and the master control unit so as to detect the type of peripheral equipment interface modules connected into the shared port and sends detection information to the master control unit, and the master control unit is connected with the interface shielding unit and the detection unit so as to control the interface shielding unit according to the detection information sent by the detection unit.

Description

technical field [0001] The invention relates to an embedded system, and more particularly, to a common port circuit and a working method of a serial transceiver interface module and a USB interface module. Background technique [0002] The embedded system interacts with the outside world through general device interface modules, such as A / D, D / A, I / O, etc. The processor is connected to sensors or other peripherals through the general device interface module to realize the input / output function of the processor . Each peripheral usually has only one independent function, and the connection between the peripheral and the processor is based on the interface module protocol standard. . However, with the development of the USB protocol, the USB interface module has become a general interface module, and most independent peripheral connectors also use the USB interface module to meet the connection needs of various smart devices. For example, the Bluetooth adapter is plugged in...

AI Technical Summary

Problems solved by technology

However, for embedded system devices, the U disk uses a USB interface module, and the Bluetooth or WIFI module needs to be connected to the processor through a serial transceiver interface module that implements the corresponding protocol. It is impossible to use the peripherals of the USB interface module on the market to realize the wireless transmission function.

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