Operating Mode; Mode Switching; Normal Mode （Mode 0 - Ebyte E31-433T17D1B User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd.

6 Operating mode

There are four operating modes, which are set by M1 and M0, the details are as follows:
Mode（0-3）
0 Normal mode
1 WOR mode
2 Power saving mode
3 sleep mode

6.1 Mode switching

Users can combine M1 and M0 with high and low levels to determine the operating mode. Two GPIOs of the MCU

can be used to control mode switching; After changing M1 and M0: If the module is idle, after 1ms, it can start
working according to the new mode; If the serial port data of the module has not been transmitted through the
wireless, the new working mode can be switched after the transmission is completed; If the module receives the
wireless data and transmits the data through the serial port, it needs to finish transmission before switching the new
working mode; Therefore, mode switching can only be valid when AUX output is 1, otherwise it will delay
switching.
For example, in mode 0 or mode 1, users continuously inputs a large amount of data and simultaneously performs

mode switching. At this time, the switching mode operation is invalid; the module will process all the user data
before performing the new mode detection; Therefore, the general recommendation is to detect the output state of
the AUX pin and switch after 2ms when the output is high.
When the module is switched from other modes to sleep mode, if the data has not been processed yet; The module

will process these data (including receiving and sending) before entering sleep mode. This feature can be used for
fast sleep, which saves power; for example, the transmitter module works in mode 0, the user transmits the serial
port data "12345", and then does not have to wait for the AUX pin to be idle (high level), and can directly switch to
sleep mode. And the user's main MCU immediately sleeps, the module will automatically transmit the user data
through the wireless, and automatically enters sleep within 1ms; This saves MCU's working time and reduces power
consumption.
Similarly, any mode switching can use this feature. After the module processes the current mode event, it will

automatically enter the new mode within 1ms; thus eliminating the need for the user to query AUX and achieve the
purpose of fast switching; For example, switching from the transmit mode to the receive mode; the user MCU can
also enter sleep before the mode switch, and use the external interrupt function to acquire the AUX change, thereby
performing mode switching.
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
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.
M0 M1
UART and wireless channel are open, transparent
0 0
transmission is on
UART and wireless channel are open；
The only difference with Mode 0: Before the data
1 0
packet transmitting, it will add wake-up code
automatically, in which the modules under mode 2
can be wake up.
UART receiving is closed, wireless channel is under
0 1 WOR mode, after the wireless data is received, the
wireless channel will be open and send the data out.
The module enters sleep mode, but the parameters
1 1
can be configured.
When M0 = 0，M1 = 0，the module works on Mode 0
Description
E31-433T17D1B User Manual
Remark
The receiver must be Mode
0、1
The receiver can be mode0, 1,
or 2
The transmitter must be mode
1. In this mode, the
transmission is unavailable.
See more details in working
parameters.
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