Ebyte E32-433T20D - 6 Operating Mode; Mode Switch

Chengdu Ebyte Electronic Technology Co,;Ltd E32-433T20DC user manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 10
6 Operating mode
There are four operating modes, which are set by M1 and M0, the details are as follows:
Mode（0-3）
M0
M1
Mode introduction
Remark
0 Normal
0
1
UART and wireless channel are open, transparent
transmission is on
The receiver must work in mode
0 or mode 1
1Wake up
1
0
UART and wire less channel are open, the only
difference with mode 0 is that before transmitting
data, increasing the wake up code automatically, so
that it can awake the receiver under mode 3.
The receiver could be 0,1 or 2
2 Power
saving
0
1
UART close, wireless is under air-awaken mode, after
receiving data, UART open and send data.
transmitter must be mode 1,
unable to transmit in this mode.
3Sleep
1
1
sleep mode, receiving parameter setting command is
available.
more details on parameter
specification.
6.1 Mode switch
 The user can decide the operating mode by the co mbination of M1 and M0. The two GPIO of MCU can be used to
switch mode. After modify ing 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 fin ished. After the module receives the wireless data & t ransmits 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 switch es 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 p in out status and wait 2ms after A UX outputs high level
before switching the mode.
 If the module switches from other modes to stand-by mode, it will wo rk in stand-by mode only after all the
remained data process completed. The feature can be used to save power consumption. For examp le, when the
transmitter works in mode 0, after the external M CU transmits data “12345”, it can switch to sleep mode
immediately without waiting the rising edge of the AUX pin, also the user’s main M CU will go dormancy
immediately. Then the module will transmit all the data through wireless tran smission & 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 exa mple, when switching fro m 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 flexib le 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 have been reduced and the effic iency of
whole system is largely improved.