Mode Switch; Rssi Mode (Mode 0) - Ebyte E70 Series User Manual

Chengdu Ebyte Electronic Technology Co,;Ltd
7 Sleep mode

6.1 Mode Switch

The user can decide the operating mode by the combination of M0, M1 and M2. The two GPIOs of MCU can be

used to switch mode. After modifying M0, M1 or M2, 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 2 or mode 4, 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

same time the work load and power consumption of the whole system has been reduced and the efficiency of whole
system is largely improved.

6.2 RSSI Mode (Mode 0)

Status
Transmitting
Receiving
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UART closes, wireless transmitting is
1 1 1
available and sleep mode is on.
M0=1 M1=0 M2=0
Wireless data transmission is not available
Wireless data receiving is not available
E70-900T14S2 user manual
It can be woken up by any falling edge
of M2, M1, M0.
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