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Chengdu
Instruction format
C3+C3+C3
7.4 Parameter setting instruction
No.
Item
Fix 0xC0 or 0xC2, it means this frame data is control
command
0
HEAD
High address byte of module
1
ADDH
（the default 00H）
Low address byte of module
2
ADDL
（the default 00H）
Rate parameters, including serial rate and air rate
7, 6: Serial parity bit
00: 8N1 (default)
01: 8O1
10: 8E1
11: 8N1
3
SPED
-------------------------------------------------
5，4，3
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
Detailed description
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).
Description
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
Remark
Must be 0xC0 or 0xC2
C0: Save the parameters when power-down
C2: Do not save the parameters when
power-down
00H-FFH
00H-FFH
---------------------------------------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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17
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