Ebyte E90-DTU User Manual page 28

Chengdu Ebyte Electronic Technology Co., Ltd.
Frequency
13
channel
Air speed
14
Module
power
15
Data RSSI
16
17 Network ID
Sub-contract
length
18
transfer
19 method
Channel RSSI
20
21 Key
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co., Ltd.
Input, range 0-83 The maximum lingering time of LBT is 2 seconds, and it will be issued
(default 23) when it reaches 2 seconds.
0.3 Kbps
1.2 Kbps
2.4 Kbps (default)
The air speed of both communication parties must be the same;
4.8 Kbps
The higher the air speed, the smaller the delay and the shorter the
9.6 Kbps
transmission distance.
19.2 Kbps
38.4 Kbps
62.5 Kbps
Off (default)
Module transmit power
turn on
Power and current are non-linear, and the power supply has the highest
Input, range 0-83
efficiency at maximum power;
(default 23)
The current does not decrease in proportion to the decrease in power.
0.3 Kbps
1.2 Kbps
After being enabled, the module will receive the wireless data and output
2.4 Kbps (default)
through the serial port TXD, followed by an RSSI strength byte.
Network address, used to distinguish the network;
Off (default)
When communicating with each other, they should be set to the same.
turn on
The data sent by the user is less than the length of the sub-packet, and the
Input, range 0-83
serial port output of the receiving end appears as an uninterrupted
(default 23)
continuous output;
0.3 Kbps The data sent by the user is longer than the packet length, and the serial
port on the receiving end will be packetized and output.
1.2 Kbps
Sending: The user can input data through the serial port, and the module
will start transmitting these data wirelessly.
2.4 Kbps (default)
Receiving: After receiving the wireless data, the module will output
these data through the serial port TXD pin.
During fixed-point transmission, the module recognizes the first three
bytes of the serial data received as:
Off (default)
Address high + address low + channel, and use it as a wireless
transmission target.
turn on
After being enabled, the C0 C1 C2 C3 instruction can be sent to read the
register in the transmission mode or the WOR transmission mode;
Register 0x00: current ambient noise RSSI;
Register 0X01: RSSI when data was last received
turn on
Instruction format: C0 C1 C2 C3 + start address + read length;
Return: C1 + address + read length + read effective value; for example:
send C0 C1 C2 C3 00 01
Returns C1 00 01 RSSI (address can only start from 00, read length is 1)
Input, range: Write only, read returns 0;
E90-DTU(400SL22P)User Manual
27