Ebyte E22-400T30D, Руководство пользователя

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Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30D User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd. 12
4
When the user switches to other operating modes from mode 3 (sleep mode) or it’s still in reset process, the module will reset
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) M1 M0 Description Remark
0 Normal mode 0 0
UART and wireless channel are open, transparent transmission
is on
Supports configuration over air via
special command
1 WOR mode 0 1 Can be defined as WOR transmitter and WOR receiver Supports wake up over air
2 Configuration mode 1 0
Users can access the register through the serial port to control
the working state of the module
3 Deep sleep mode 1 1 Sleep mode
6.1 Mode switching
No. Remark
1

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.
2

For example, 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.
3

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.