User's Manual

Shenzhen hailingke Electronico.,Ltd
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 Port
 Serial Parameters
 Bandrate
 Data length
 Checksum bit
 Stop bit
2.3 Config Parameters
HLK-M35 can config by at command,Learn more you can find << HLK-M35 AT Command
V1.3>>
HLK-M35 also can be configed by UDP/988 port,When you establish udp,you can send
at commad by network,learn more you can see the “ at+DP” command.
2.4 Firmware Update
HLK-M35 supprt serial port to update firmware.Use tool:HLK_M35_update.exe.Steps below:
1. Open HLK_M30_update.exe,Change the name of the firmware to HLK-M30.img,copy
it to the same directory of the HLK_M35_update.exe tool.
2. Press C to choose update serial port.
3. Press “Enter”to let the tool to start update.
4. Connect the serial prot,Press the Exit/Reset/Update button and then power on,Wait for
1s then release,the tool will load the firmware.
5. When update complete,the module will restart.
2.5 GPIO
HLK-M35 supply three GPIO to use,These GPIO can control by serial at command,and
also can be controlled by UDP.
HLK-M35 GPIO
GPIO Function Feature Type
GPI000 Output/Input High/Low Voltage Write/Read by at command I/O