Ebyte E32-868T20D User Manual

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Ebyte E32-868T20D User Manual Manual pdf 13 page image

Chengdu Ebyte Electronic Technology Co,;Ltd E32-868T20D user manualCopyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd. 12ReceivingIn mode 2, it is required the data transmitter works in mode 1.The wireless module monitors the preamble code at regular time.Once it gets the preamble code, it will remain as receiving status and waiting for the completion of receiving the entirevalid data package.Then the AUX outputs low level, 5ms later the serial port is open to transmit received wireless data through TXD.Finally, AUX outputs high level after process completed.The wireless module stays in “power-saving – monitoring” working status (polling).By setting different wake-up time, the module will have different receiving response delay (2s in maximum) and averagepower consumption (30uA in minimum).The user needs to achieve a balance between communication delay time & average power consumption.6.5 Sleep mode (mode 3)When M1=1, M0=1, module works in mode 3Transmitting N/AReceiving N/AParameter setting This mode can be used for parameter setting. It uses serial port 9600 & 8N1 to set module working parameters throughspecific instruction format. (pls refer to parameters setting for details)NotesWhen the mode changes from stand-by mode to others, the module will reset its parameters, during which the AUXkeeps low level and then outputs high level after reset completed. It is recommended to check the AUX rising edge foruser.7 Command formatIn sleep mode（Mode 3：M1=1, M0=1）, it supports below instructions on list.(Only support 9600 and 8N1 format when setting)No. Instruction format Illustration1 C0+workingparametersC0 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes intotal and must be sent in succession, ( Save the parameters whenpower-down ).2 C1+C1+C1 ( Save the parameters when power-down )3 C2+workingparametersThree C1 are sent in hexadecimal format. The module returns the savedparameters and must be sent in succession.4 C3+C3+C3C2 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes intotal and must be sent in succession. (Do not save the parameters whenpower-down)5 C4+C4+C4 Three C3 are sent in hexadecimal format. The module returns the versioninformation and they must be sent in succession.7.1 Default parameterstype Default parameter values：：C0 00 00 1A 17 44