A method for configuring a wifi device to connect to a wifi router

Abstract

The invention discloses a general method for configuring a WiFi device to make the same to connect a WiFi router. The method includes the following steps that: step 1, a unidirectional physical data transmission channel is established between the WiFi device and the WiFi router; step 2, user configuration data are written and are adopted as multicast data packets, wherein the user configuration data include the SSID and password of the WiFi router; step 3, the WiFi router continuously sends the multicast packets through IP multicast; step 4, the WiFi device continuously scan all channels at intervals until a certain channel captures the multicast packets of a WiFi link layer, captures the multicast packets of the WiFi link layer, and filters the captured multicast data packets through a destination MAC address and multicast information so as to filter out illegal data packets, and obtains legitimate data packets, decrypts the data packets, performs analysis to obtain the SSID and password in the data, and is connected to the WiFi router; and step 5, if the WiFi device is successfully connected to the WiFi router, the WiFi device returns successful connection information to the WiFi device, otherwise, the method returns to the step 4, and scanning is further carried out.

Description

Technical field [0001] The invention belongs to the technical field of wireless communication, and specifically relates to a method for configuring an embedded device with WiFi function to connect to a WiFi router. Background technique [0002] Today, when intelligent and convenient becomes a trend, more and more devices are attached or need remote control, WiFi has become the mainstream, how to quickly configure intelligent embedded devices with WiFi functions (referred to as WiFi devices, such as WiFi speakers) , WiFi socket, etc.) Conveniently and quickly connect to the WiFi router to improve the experience is one of the important considerations for users to choose WiFi equipment, and it is also one of the important topics that developers are committed to research. [0003] There are many ways to connect WiFi devices to WiFi routers, which are listed in detail as follows: [0004] 1. WiFi devices with input and output devices (such as keyboards, touch screens, display screens, et...

AI Technical Summary

Problems solved by technology

Configure the device through the UDP broadcast packet length, which takes a long time and has a low success rate;

[0008] 5. Attach the SSID and password directly in the UDP broadcast; directly attach the configuration information in the UDP broadcast packet, which requires brute force cracking or cannot be used under an encrypted router, and the configuration success rate is low

Although this method is convenient for the user to connect to the WIFI router, the above method to obtain the MAC address requires the user to obtain it by scanning or other methods, and if there is no MAC address barcode or QR code for the user to scan, ordinary users cannot obtain the MAC address at all. The address has a certain technical difficulty in implementation; at the same time, it also allows users to connect to the network without knowing the network security of the connected WIFI, thus greatly increasing the security risk of WIFI devices