Method and device for realizing OTG based on USB socket

Abstract

The invention discloses a method and a device for realizing OTG based on a UBS socket. The device comprises a first channel, an overvoltage detection circuit, a second channel, an automatic master-slave switching circuit and a slave state holding circuit, wherein the first channel is used for supplying electricity to external equipment; the overvoltage detection circuit is used for detecting the voltage state on the channel of the external equipment; the second channel is used for controlling state switching according to a received detection result sent by the overvoltage detection circuit and outputting corresponding signals to a processor; the automatic master-slave switching circuit controls the processor which is connected with the automatic master-slave switching circuit to switch to the slave state according to the slave state signal, and cuts off the first channel for supplying the electricity to the external equipment through the processor, or controls the processor which is connected with the automatic master-slave switching circuit to switch to the master state according to the master state signal; and the slave state holding circuit enables the second channel to keep on state according to the slave state signal of the processor. By successfully adopting effective combination of a passive device and a voltage standard, the method and the device realize the automatic switching of an ID state and effectively avoid the phenomenon that similar states collide.

Description

technical field [0001] The present invention relates to a technology based on a universal USB (Universal Serial Bus, Universal Serial Bus) socket, in particular to a method and device based on a universal USB socket and realizing an OTG (On The Go) function. Background technique [0002] When maintaining a wireless communication base station system, it is necessary to extract a large amount of on-site alarm information to analyze and locate faults. Usually, a large number of alarms are reported to the BSC (Base Station Controller, base station controller) background computer, but if the transmission link is abnormal, causing the communication between the BSC and the BTS (Base Transceiver Station, base transceiver station) to fail, it is very difficult It is difficult to obtain on-site alarm information. Therefore, on the main control device of BTS, it is meaningful to use a general-purpose USB interface to interact with peripheral devices: when the transmission fails, the m...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a device for realizing OTG based on a universal USB socket, which is used to solve the problem of similar state conflicts, and the circuit is simple to implement and low in cost

[0005] Another object of the present invention is to provide a method for realizing OTG based on a universal USB socket, which is used to solve the problem of similar state conflicts, and the circuit is simple to implement and the cost is low

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