Chengdu Ebyte Electronic Technology Co,;Ltd
E62-433T20D user manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co,;Ltd
9
Transmitting
transparent transmission is on.
0 when transmitting.
Mode 1
configuration
0
1
Serial port at fixed 9600bps baud rate,
wireless off, configurable parameters
-
6.1 Mode switch
No.
Remarks
1
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 1 ms 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.
2
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 pinout
status and wait 2ms after AUX outputs high level before switching the mode.
3
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.
4
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.
5
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 Transmission mode (Mode 0)
Type
When M0 = 0, module works in mode 0
Ordinary
transmitting
operation
User can transmit the data when the modules are synced (PINLOCK = 1(high level)).
Benefit of the TDD feature, user can perform transmitting while receiving. The maximum
size of the data which can be transmit at one time is 2048 Bytes. After the AUX has
turned to 0(low-level), User can perform another 2048 Bytes transmitting operation. The
TDD feature is available whatever the air data rate or the baud rate is.
Continuous
transmitting
operation
The module can transmit data continuously with some particular combination of air data
rate and baud rate, which has been show below.
Air Data Rate = 16Kbps, Baud rate <= 2400bps;
Air Data Rate = 32Kbps, Baud rate <= 4800bps;
