Ebyte E95-DTU User Manual page 15

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02H Read/Write NETID
03H Read/Write REG0
04H Read/Write REG1
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Network address, used to distinguish networks;
NETID（Default 0）
When communicating with each other, they should be set to the same.
7 6 5 UART serial port rate (bps)
0 0 0 The serial port baud rate is 1200
0 0 1 The serial port baud rate is 2400
0 1 0 The serial port baud rate is 4800
The serial port baud rate is 9600
0 1 1
（default）
1 0 0 The serial port baud rate is 19200
1 0 1 The serial port baud rate is 38400
1 1 0 The serial port baud rate is 57600
1 1 1 The serial port baud rate is 115200
4 3 Serial parity bit
0 0 8N1（default）
0 1 8O1
1 0 8E1
1 1 8N1（等同 00）
2 1 0 Wireless air rate (bps)
0 0 0 Air speed 0.3k
0 0 1 Air speed 1.2k
0 1 0 Air speed 2.4k（default）
0 1 1 Air speed 4.8k
1 0 0 Air speed 9.6k
1 0 1 Air speed 19.2k
1 1 0 Air speed 38.4k
1 1 1 Air speed 62.5k
7 6 Data Packet Separate setting
0 0 240 Bytes（default）
0 1 128 Bytes
1 0 64 Bytes
1 1 32 Bytes
5 RSSI Environmental noise enable
0 Disabled (default)
1 Enable
4 3 2 Remain
E95-DTU(400SL22-485) User Manual
For two DTUs that communicate with each
other, the serial port baud rate can be
different, and the verification method can also
be different;
When continuously transmitting large data
packets, users need to consider the data
congestion caused by the same baud rate, and
may even be lost;
It is generally recommended that the baud
rate of the two communication parties be the
same.
The serial port mode of the two
communication parties can be different;
The air rate of both parties must be the same;
The higher the air rate, the smaller the delay
and the shorter the transmission distance.
The data sent by the user is less than the data
packet separate length, and the serial port
output of the receiving end appears as an
uninterrupted continuous output;
If the data sent by the user is larger than the
data packet separate length, 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
=-RSSI/2);
Instruction format: C0 C1 C2 C3 + start
address + read length;
Return: C1 + address address + read length +
read effective value; for example: send C0 C1
C2 C3 00 01
Return C1 00 01 RSSI
is: dBm
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