Waveshare RS232/485 TO WIFI POE ETH (B) - Page 65

RS232/485 TO WIFI POE ETH (B) User Manual
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65
character
M+2
Signal
strength n
1
The signal strength of router N network ranges from 0 to 100, and
the corresponding actual value is 0% to 100%
M+3
End
Character
2
The end character of signal strength n, 0x0D, 0x0A
M+4
Checksum
byte
1
The cumulative sum of all bytes after the header (excluding the
header) and before the checksum byte (excluding the checksum
byte).
Example:
Mobile phone sent to WIFI serial server (hexadecimal number): FF00010102.
WIFI serial server returns to mobile phone (hexadecimal number):
FF00148102544553543100400D0A 544553543200370D0A1F
Note: The mobile phone sends a query instruction to the WIFI serial server to query the router
related information. The information returned by the WIFI serial server to the mobile phone is: there
are two routers, the SSID of router 1 is "TEST1" and the signal strength is 64%; Router 2 has an SSID of
"TEST2" and a signal strength of 55%.
Note: The router information replied by the WIFI serial server is sorted according to the signal
strength.
Table setting instruction
No.
Name
Bytes
Note
1
Header
1
Fixed value 0xFF
2
Length
2
The number of bytes after the length (excluding the length) and
before the checksum (excluding the checksum).
3
Command
code
1
Command type, 0x02 is the setting command.
4
Reserved
byte
1
The default is 0x00.
5
SSID
Indefinite
length
The SSID of the router.
6
Separator
2
SSID terminator, fixed values 0x0D, 0x0A.
7
Password
Indefinite
length
The password of the router.
8
Checksum
byte
1
The cumulative sum of all bytes after the header (excluding the
header) and before the checksum byte (excluding the checksum
byte).
Table setting reply instruction
No.
Name
Bytes
Note
1
Header
1
Fixed value 0xFF
2
Length
2
All bytes after the length (excluding the length) and before the