Palmodic Signal - Jinan USR IOT Technology USR-WIFI232-A2 User Manual

The phone PDA send searching command to module, the response from module is: SSID of
router1 is "TEST1", signal strength of router1 is 64%; SSID of router2 is "TEST2", signal strength
of router2 is 55%.
Note: The information of routers is ordered by signal strength.
Setting command
No Name
1 head
2 length
3 cmd
4 reserve
5 SSID
6 separator
7 password
8 check
Response for setting
No Name
1 head
2 length
3 cmd
4 Check for
SSID
5 Check for
password
6 check
Example:
Data from phone PDA to module (HEX): FF 00 0F 02 00 54 45 53 54 31 0D 0A 31 32 33 34 35 36
CE
Data from module to phone PDA (HEX): FF 00 03 82 01 01 87
Explanation:
The phone PDA send setting command to module, SSID is set to "TEST1", password is set to
"123456". The response from module is that the "TEST1" Wi-Fi network exist, the form of
password is correct.

4.9 Palmodic Signal

Base on selected factory default setting, "nReady" signal can have two output statuses:
Status One: The module will output "0" after normal boot up. This signal used to judge if

module finish boot up and ready for application.
Status Two: The module will output "Palmodic Signal" after normal boot up.The palmodic

signal is 0.5Hz square wave with dutyfactor 1:1. User can query this signal to judge if
moduleis active "live" or need to re-boot. When module switches to command mode, it will
output "0", which used to distinguish work mode and command mode.
Notes:
Jinan USR IOT Technology Limited
USR-WIFI232-A2 User Manual
Num of Bytes Description
1 fixed value:0xFF
2 Sum of data bytes from length bytes to check byte
(not contain length bytes and check byte).
1 Command type, 0x02
1 fixed value:0x00
Unsized SSID of router
2 fixed value:0x0D,0x0A
Unsized Password of router
1 Sum of bytes from head (not contained) byte to
check byte (not contained).
Num of Bytes Description
1 fixed value:0xFF
2 Sum of data bytes from length bytes to check
byte(not contain length bytes and check byte).
1 Command type, 0x82
1 If the SSID set by PDA exist, check value is 0x01,
otherwise is 0x00.
1 If the form of password set by PDA is correct, check
value is 0x01, otherwise is 0x00.
1 Sum of bytes from head (not contained) byte to
check byte (not contained).
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