Operating Mode; Mode Switch - Ebyte E30 Series User Manual

Chengdu Ebyte Electronic Technology Co,;Ltd
user parameters, during which AUX outputs low level.

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
1 Wake up
2 Power
saving
3 Sleep

6.1 Mode switch

The user can decide the operating mode by the combination of M1 and M0. The two GPIO of MCU can be used to

switch mode. After modifying M1 or M0, it will start to work in new mode 1ms later if the module is free. If there
are any serial data that are yet to finish wireless transmitting, it will start to work in new mode after the UART
transmitting finished. After the module receives the wireless data & transmits the data through serial port, it will
start to work in new mode after the transmitting finished. Therefore, the mode-switch is only valid when AUX
outputs 1, otherwise it will delay.
For example, in mode 0 or mode 1, if the user inputs massive data consecutively and switches operating mode at the

same time, the mode-switch operation is invalid. New mode checking can only be started after all the user's data
process completed. It is recommended to check AUX pin out status and wait 2ms after AUX outputs high level
before switching the mode.
If the module switches from other modes to stand-by mode, it will work in stand-by mode only after all the

remained data process completed. The feature can be used to save power consumption. For example, when the
transmitter works in mode 0, after the external MCU transmits data "12345", it can switch to sleep mode
immediately without waiting the rising edge of the AUX pin, also the user's main MCU will go dormancy
immediately. Then the module will transmit all the data through wireless transmission & go dormancy 1ms later
automatically, which reduces MCU working time & save power.
Likewise, this feature can be used in any mode-switch. The module will start to work in new mode within 1ms after

completing present mode task, which enables the user to omit the procedure of AUX inquiry and switch mode
swiftly. For example, when switching from transmitting mode to receiving mode, the user MCU can go dormancy
before mode-switch, using external interrupt function to get AUX change so that the mode-switch can be realized.
This operation is very flexible and efficient. It is totally designed on the basis of the user MCU's convenience, at the

Copyright ©2012–2019，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 is that before transmitting data,
1 0
increasing the wake up code automatically, so that it can
awake the receiver under mode 2.
UART close, wireless is under air-awaken mode, after
0 1 receiving data, UART open and send data.
sleep mode, receiving parameter setting command is
1 1
available.
Mode introduction
E30-490T20D user manual
Remark
The receiver must work in
mode 0 or mode 1
The receiver could be 0,1
or 2
transmitter must be mode 1,
unable to transmit in this
mode.
more details on parameter
specification.
10