User Manual
第
7
页 共
30
HLK-B35
2. Function description
HLK-B35 supports serial port to WIFI STA, serial port to WIFI AP and serial port to BLE
mode.
The module is powered on by default in AP mode (IP is fixed at 192.168.169.1), as a UPD
server, port 9000, WiFi hotspot name is HLK_B35_WIFIxxxxxxxx, where xxxxxxxx is the last 4
bytes of the module's MAC address.
The Bluetooth name is HLK_B35_BLExxxxxxxx, where xxxxxxxx is the last 4 bytes of the
module's MAC address.
2.1. WIFI indicator flashing description
The module is indicated by the flashing of the LED indicator in different states, and the current
operating state of the module can be quickly known from the table
：
Module status
Light flashing method
STA mode
Not connected to the router
Periodic three flashes
connected to the router
Fast flashes
Non-TCP client
Socket created successfully
Slow flashing
TCP client
Connect to the TCP server
Slow flashing
AP mode
Periodic four flashes
2.2. UART to WIFI STA
Pic 6
Module as STA
The module converts the serial port data of the device into wifi data to achieve the purpose of
device networking.
