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In mode 2, it is required the data transmitter works in mode 1.
The wireless module monitors the preamble code at regular time.
Once it gets the preamble code, it will remain as receiving status and waiting for the completion of receiving the
entire valid data package.
Then the AUX outputs low level, 5ms later the serial port is open to transmit received wireless data through
Receiving
TXD. Finally, AUX outputs high level after process completed.
The wireless module stays in "power-saving – monitoring" working status (polling).
By setting different wake-up time, the module will have different receiving response delay (2s in maximum) and
average power consumption (30uA in minimum).
The user needs to achieve a balance between communication delay time & average power consumption.
6.5 Sleep mode (mode 3)
When M1=1, M0=1, module works in mode 3
Transmitting
Receiving
This mode can be used for parameter setting. It uses serial port 9600 & 8N1 to set module working parameters
Parameter setting
through specific instruction format. (pls refer to parameters setting for details)
When the mode changes from stand-by mode to others, the module will reset its parameters, during which the
Notes
AUX keeps low level and then outputs high level after reset completed. It is recommended to check the AUX
rising edge for user.
7 Command format
In sleep mode（Mode 3：M1=1, M0=1）, it supports below instructions on list.
(Only support 9600 and 8N1 format when setting)
No.
Instruction format
1
C0+working parameters
2
C1+C1+C1
3
C2+working parameters
4
C3+C3+C3
5
C4+C4+C4
7.1 Default parameters
type
Model
Frequency
E32-433
433MHz
T20S1
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.
C0 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must be
sent in succession, ( Save the parameters when power-down ).
( Save the parameters when power-down )
Three C1 are sent in hexadecimal format. The module returns the saved parameters and must
be sent in succession.
C2 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must be
sent in succession. ( Do not save the parameters when power-down )
Three C3 are sent in hexadecimal format. The module returns the version information and they
must be sent in succession.
Default parameter values：：C0 00 00 1A 17 44
Address
Channel
0x0000
0x17
N/A
N/A
Illustration
Air data rate
Baud rate
2.4kbps
9600
E32-433T20S1 user manual
Transmitting power
Parity
8N1
100mW
13
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