Chengdu
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
17
Instruction format
Detailed description
C3+C3+C3
In the setting mode (M0 = 0, M1 = 1), issue a command to the module serial port
(HEX format): C3 C3 C3,
The module will return the current configuration parameters, such as: C3 49 xx yy;
49 here represents the module model (E49 series), xx is the version number, and yy
refers to other features of the module (users can ignore).
7.4 Parameter setting instruction
No.
Item
Description
Remark
0
HEAD
Fix 0xC0 or 0xC2, it means this frame data is control
command
Must be 0xC0 or 0xC2
C0: Save the parameters when power-down
C2: Do not save the parameters when
power-down
1
ADDH
High address byte of module
（
the default 00H
）
00H-FFH
2
ADDL
Low address byte of module
（
the default 00H
）
00H-FFH
3
SPED
Rate parameters, including serial rate and air rate
7, 6: Serial parity bit
00: 8N1 (default)
01: 8O1
10: 8E1
11: 8N1
-------------------------------------------------
5
，
4
，
3
TTL serial speed (bps)
000: Serial baud rate is 1200
001: The serial port baud rate is 2400
010: The serial port baud rate is 4800
011: Serial baud rate is 9600 (default)
100: The serial port baud rate is 19200
101: Serial baud rate is 38400
---------------------------------------UART baud
rate can be different between
communication parties
The UART baud rate has nothing to do with
wireless transmission parameters & won’t
affect the wireless transmit / receive
features.
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