Shenzhen Hi-Link Electronic Co.,Ltd
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7
Fig
2-2 HLK-WR02Interface
2.3.1
RS232
The following figure shows a schematic diagram of the external interface of RS232.
Interface,the definition is as follows:
Fig 2-3 RS232 PIN
No
Function
Direction
Explaination
1 N/C
N/C
None
2 RXD
Input
Data reciving input
3
TXD
Output
Data sending output
4 N/C N/C
None
5
GND
Input
Ground
6 N/C N/C
None
7 N/C N/C
None
8 N/C N/C
None
2.3.2
LAN Interface and WAN interface
HLK-WR02
serial wifi server
provides two network interface, WAN port and LAN port, the
interface is a standard form of RJ-45 interface. RJ-45 interface definition is shown as
below
：
