Chengdu Ebyte Electronic Technology Co,;Ltd
E32-915T30S user manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co.,Ltd.
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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
same time the work load and power consumption of the whole system have been reduced and the efficiency of
whole system is largely improved.
6.2 Normal mode (mode 0)
When M1 = 0 & M0 = 0, module works in mode 0
Transmitting
The module can receive the user data via serial port, and transmit wireless data package of 58 bytes. When the data
inputted by user is up to 58 byte, the module will start wireless transmission. During which the user can input data
continuously for transmission.
When the required transmission bytes are less than 58 bytes, the module will wait 3-byte time and treat it as data
termination unless continuous data inputted by user. Then the module will transmit all the data through wireless
channel.
When the module receives the first data packet from user, the AUX outputs low level.
After all the data are transmitted into RF chip and transmission start , AUX outputs high level.
At this time, it means that the last wireless data package transmission is started, which enables the user to input another
512 bytes continuously. The data package transmitted from the module working in mode 0 can only be received by the
module working in mode 0 or 1.
