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4). The wifi indicator flashes quickly: it means that the module is in a STA mode and connected
to the wifi hotspot. When there is data transmission, the module LED will flash quickly
2.2. One-key configuration mode
For the IOT wifi module, based on cost and performance considerations, there is no touch
screen interactive interface like a mobile phone. The user can see the ap list on the mobile phone and
click to enter the password to connect to the network. What should I do? One-key configuration is
when the wifi module is in promiscuous mode (can capture all 802.11 frames in the air), the APP
sends the SSID and password to the wifi module through UDP broadcast or multicast through a
certain encoding rule, the module parses it out, and then connects to the router. Install the Android
app HLK-TCPdemo, then select the configuration network, select the airkiss mode, enter the
password, and click to start the configuration to start the configuration. When the network
connection is successful, the module will change from double flashing to fast flashing, indicating
successful networking.
Figure 4
one-key configuration diagram