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Chengdu Ebyte Electronic Technology Co., Ltd.
Read/
03H
REG1
Write
Read/
04H
REG2
Write
Read/
05H
REG3
Write
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
1
1
0
Air Data Rate 38.4k
1
1
1
Air Data Rate 62.5k
7
6
Sub-Packet Setting
0
0
200 bytes（default）
0
1
128 bytes
1
0
64 bytes
1
1
32 bytes
5
RSSI Ambient noise enable
0
Disable（Default）
1
Enable
4
3
2
Reserve
1
0
Transmitting Power
0
0
30dBm（default）
0
1
27dBm
1
0
24dBm
1
1
21dBm
Channel Control（CH）
0-83 represents a total of 84 channels
7
Enable RSSI Byte
0
Disable（Default）
1
Enable
6
Transmission Method
0
Transparent transmission mode（default）
1
Fixed transmission mode
5
Reserve
4
LBT Enable
0
Disable（default）
1
Enable
3
Reserve
2
1
0
WOR Cycle
0
0
0
500ms
0
0
1
1000ms
E22-400T30S User Manual
The data sent by the user is less than the
sub-packet length, and the serial port output of the
receiving end appears as an uninterrupted
continuous output;
The data sent by the user is larger than the packet
length, and the serial port of the receiving end will
be output in packets.
After enabling, you can send commands C0 C1
C2 C3 in transmission mode or WOR sending
mode to read registers;
Register 0x00: Current environmental noise RSSI;
Register 0X01: RSSI when receiving data last
time
(The current channel noise is: dBm = - （ 256 -
RSSI）);
Instruction
format:
C0
address+read length;
Return: C1 + address + read length + read valid
value; for example: send C0 C1 C2 C3 00 01
Return C1 00 01 RSSI
(address can only start
from 00)
The relationship between power and current is
non-linear, and the power supply has the highest
efficiency at maximum power;
The current will not decrease in the same
proportion as the power decreases.
Actual frequency = 410.125 + CH *1M
After being enabled, the module receives wireless
data and outputs it through the serial port TXD,
followed by an RSSI strength byte.
During fixed transmission, the module will
recognize the first three bytes of serial data as:
address high + address low + channel, and use it
as a wireless transmission target.
After enabling, monitoring will be conducted
before wireless data transmission, which can
avoid interference to a certain extent, but may
cause data delay;
The maximum stay time of LBT is 2 seconds, and
it will be issued forcibly when it reaches 2
seconds.
Only valid for mode 1;
Cycle T= (1+WOR)*500ms, the maximum is
4000ms, the minimum is 500ms;
C1
C2
C3+start
16
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