Ebyte E22-400T33S User Manual page 15

Chengdu Ebyte Electronic Technology Co., Ltd.
Read/Wr
02H NETID
ite
Read/Wr
03H REG0
ite
Read/Wr
04H REG1
ite
Copyright ©2012–2022，Chengdu Ebyte Electronic Technology Co.,Ltd.
NETID（default 0）
7，6，5 UART: Serial port rate（bps）
000: 1200
001: 2400
010: 4800
011: 9600（default）
100: 19200
101: 38400
110: 57600
111: 115200
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4，3： Serial parity bit
00：8N1（default）
01：8O1
10：8E1
11：8N1（equal to 00）
-----------------------------------
2，1，0，air data rate
000: 0.3k
001: 1.2k
010: 2.4k（default）
011: 4.8k
100: 9.6k
101: 19.2k
110: 38.4k
111: 62.5k
7，6： Sub packet setting
00: 240 bytes（default）
01: 128 bytes
10: 64 bytes
11: 32 bytes
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5 ：RSSI Ambient noise enable
1: Enable
0: Disable（default）
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4，3，2 Reserve
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1，0： Transmitting power
00：33dbm（default）
01：30dbm
10：27dbm
11：241dbm
E22-400T33S User Manual
Network address, used to distinguish the network.

When communicating with each other, they should
be set to the same.
For the two modules that communicate with each

other, the serial port baud rate can be different, and
the verification method can also be different.
When transmitting large packets continuously, users

need to consider the data blocking caused by the
same baud rate, and data may even be lost. It is
generally recommended that both parties have the
same baud rate.
---------------------------------------
Both parties must be the same

The higher the rate, the shorter the distance

When the data is smaller than the sub packet length,

the serial output of the receiving end is an
uninterrupted continuous output.
When the data is larger than the sub packet length,
the receiving end serial port will output the sub
packet.
--------------------------------------------
When enabled, the C0 C1 C2 C3 command can be

sent in the transmitting mode or WOR transmitting
mode to read the register.
Register 0x00: Current ambient noise rssi
Register 0X01: rssi when the data was received last
time.
（Current channel noise is: dBm =-RSSI/2）
Command format: C0 C1 C2 C3 + starting address +
read length
Returns: C1 + address address + read length + read valid
value
E.g: send C0 C1 C2 C3 00 01
Return C1 00 01 rssi
----------------------------------
Power and current are nonlinear, and power

efficiency is highest at maximum power.
The current does not decrease in proportion to the

decrease in power.
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