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2.4. Serial to WiFi AP
Diagram 7 Module as ap
In AP mode, mobile phones, PCs or other WiFi devices can be connected to the B30 module via
WiFi, and serial devices can transmit data through the B30 module and other WiFi devices.
2.5. Serial working state conversion
After HLK-B30 is powered on, the default mode is transparent transmission mode. By pulling
down the ES0 (PIN5) pin for more than 50ms to enter the at command mode, the module will regard
the received data as an at command and send the at command to let the module enter the transparent
transmission mode. After the network connected, the data received by the serial port will be
transmitted as transparent transmission data.
Diagram
8
Serial working mode conversion
Power on
Transparent mode
Send AT command
AT command mode
Pull down low
for 50ms
