Chengdu Ebyte Electronic Technology Co., Ltd.
E22-xxxT22S series product user manual
Copyright©2012–2024
, Chengdu Ebyte Electronic Technology Co., Ltd.
22
7.4 Factory default parameters
model
E22-230T22S factory default parameter values: C0 00 09 00 00 00 63 00 28 03 00 00
E22-400T22S factory default parameter value: C0 00 09 00 00 00 62 00 17 03 00 00
E22-900T22S factory default parameter value: C0 00 09 00 00 00 62 00 12 03 00 00
Model No
Frequency
Address
Channel
Air data rate
Baud rate
Parity format
Transmit
Power
E22-230T22S
230.125MHz
0x0000
0x28
2.4kbps
9600
8N1
22dbm
E22-400T22S
433.125MHz
0x0000
0x17
2.4kbps
9600
8N1
22dbm
E22-900T22S
868.125MHz
0x0000
0x12
2.4kbps
9600
8N1
22dbm
8. AT command
Parameter configuration or query using AT commands needs to be done in configuration mode;
AT commands are used in configuration mode. AT commands are divided into three categories: command
commands, setting commands and query commands;
Users can query the AT command set supported by the module through "AT+HELP=?". The baud rate used by
the AT command is 9600 8N0;
When the input parameters exceed the range, they will be restricted. Please do not let the parameters exceed
the range to avoid unknown situations.
8.1 AT command list
Command Commands
Description
Example
Example description
AT+IAP
(use with caution,
please see 8.3 Precautions for
Serial Port Firmware Upgrade
in this article for details )
Enter IAP upgrade mode AT+IAP
Enter IAP upgrade mode
AT+RESET
Device restart
AT+RESET
Device restart
AT+DEFAULT
Restore configuration
parameters to default
and the device restarts
AT+DEFAULT
Restore configuration
parameters to default
and the device restarts
Setting Commands
Description
Example
Example description
AT+UART=baud,parity
Set baud rate and parity
AT+UART=3,0
Set the baud rate to 9600, 8N0
AT+RATE=rate
Set air data rate
AT+RATE=7
Set air data rate to 62.5K
/
15.6K
AT+PACKET=packet
Set packet length
AT+PACKET=0
Set the packet size to 240 bytes
