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This operation mode is very flexible and efficient, and is designed according to the user's MCU's operation
convenience, and can reduce the workload of the entire system as much as possible, improve system efficiency, and
reduce power consumption.
6.2 Normal mode（Mode 0）
Type
Transmitting
Receiving
6.3 Wake-up mode mode (Mode 1)
Type
Transmitting
Receiving
6.4 Power saving mode (Mode 2)
Type
Transmitting
Receiving
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M0 = 0，M1 = 0
The module receives user data from the serial port. The module transmits a wireless data packet with a
length of 58 bytes. When the user input data reaches 58 bytes, the module will initiate wireless
transmission. At this time, the user can continue to input the data to be transmitted; when the data is less
than 58 bytes, the module will wait for 3 bytes. If no user data continues to be input, the module
considers the data to be terminated. At this time, the module transmits the data packet wirelessly; when
the module receives the first user data, the AUX output is low. When the module inputs all the data into
the RF chip and starts transmitting, the AUX output is high. At this time, it indicates that the last packet
of wireless data has started to be transmitted, and the user can continue to input up to 512 bytes data; the
data packets transmitted by the module working in mode 0 can only be received by the receiving module
working in mode 0, mode 1.
The module always turns on the wireless receiving function and can receive the data packets transmitted
from the modules which work in mode 0 and mode 1.
After receiving the data packet, AUX will output low level, and after delaying for 5ms, it will start to
transmit wireless data through the serial port TXD pin. After all wireless data is output through the serial
port, AUX will output high level.
M0 = 1，M1 = 0
The conditions for module start packet transmission and AUX function are the same as mode 0; the only
difference is that the module will automatically add the wake-up code before each packet. The length of
the wake-up code depends on the wake-up time set in the user parameter; The purpose of wake-up code
is to wake up the receiving module working in mode 2; therefore, the data transmitted by the module
working in mode 1 can be received by the module working in mode 0, 1, 2.
Equivalent to mode 0.
M0 = 0，M1 = 1
The module is in the sleep state, the serial port is closed, and the serial port data from the external MCU
cannot be received, so this mode does not have the wireless transmission function.
In mode 2, the transmitter have to work in mode 1; the wake-up code is monitored periodically, and once
a valid wake-up code is received, the module will continue to receive and wait for the entire valid data
packet to be received; then the AUX outputs low level. After delaying for 5ms, the module will open the
serial port and send the received wireless data through TXD, then the AUX outputs high level; then the
module continues to enter the "sleeping-monitoring" working state (polling); by setting different
wake-up time. There are different receive response delays (up to 2s) and average power consumption
(minimum 30uA); users need to strike a balance between communication delay and average power
consumption.
E31-433T30S User Manuel
10
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