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The module converts the serial port data of the device into wifi data to achieve the purpose of
networking the device.
2.4. Serial port to WIFI AP
Figure 7
Module as ap
In AP mode, mobile phones, PCs or other wifi devices can be connected to the B36 module
through wifi, and serial devices can transmit data through the B36 module and other wifi devices
2.5. Serial port working status conversion
After the HLK-B36 is powered on, the default is the transparent transmission mode. By pulling
down the pin ES0 (PIN5) for more than 50ms and less than 2s to enter the at command mode, the
module will treat the received data as an at command and send the at comand to makes the module
enter the transparent transmission mode. After the network connection, the data received by the serial
port will be transmitted as transparent transmission data.
Figure 8
Serial port working status conversion
AT command mode
Power-on
Transparent transmission mode
transmission mode
Pull down pin for50ms
50ms
Send at command
