Chengdu Ebyte Electronic Technology Co.,Ltd.
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，
Chengdu Ebyte Electronic Technology Co.,Ltd.
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6.2 Transmission mode
（
Mode 0
）
Type
M0 = 0
，
M1 = 0
Transm
itting
The module receives user data from the serial port, the maximum length of the wireless data packet transmitted
by the module is 54 bytes, when the amount of user input data reaches 54 bytes, the module will start wireless
transmission. At this time, the user can continue to enter the data that needs to be transmitted.
When the user needs to transmit less than 54 bytes, the module waits for about 20ms. If there is no user data to
continue to input, the data is considered to be terminated. At this time, the module sends all data via wireless.
When the module receives the first user data, AUX outputs low level. When the module puts all data into the RF
chip and starts transmitting, AUX outputs high level.
At this point, it indicates that the last packet of wireless data has been transmitted, and the user can continue to
enter data.
Data packets sent through mode 0 can only be received by the receiving module in mode 0.
Receivi
ng
The module is on the wireless receiving function all the time and can receive data packets from mode 0.
After receiving the data packet and the module AUX outputs a low level, it starts sending wireless data through
the serial port TXD pin. After all wireless data is output through the serial port, the module outputs AUX high
level.
6.3 RSSI Mode
（
Mode 1
）
Type
M0 = 1
，
M1 = 0
Transmitti
ng
No wireless transmission is allowed, the received serial data will be discarded.
Receiving
Can not receive air wireless data, only scan the signal strength of the current channel, and output a strength value
(relative value) through the serial port every 100ms.
Numerical calculation method: signal strength =-(256 (decimal)-data (decimal)) dBm
If the hexadecimal value output by the serial port is 0x91, the actual signal strength is:-(256 (decimal)-145
(decimal)) =-111dBm
6.4 Setting Mode
（
Mode 2
）
Type
M0 = 0
，
M1 = 1
transmit
ting
No wireless transmission is allowed, the received serial data will be discarded.
receivin
g
Unable to receive wireless data
configur
ation
Can be used for module parameter setting, use serial port 9600, 8N1, set module working parameters according
to specific instruction format
Note
When entering from the setting mode to other modes, the module will reconfigure the parameters. During the
configuration, AUX remains low level;
It outputs a high level after finished, so it is recommended that the user detect the rising edge of AUX.
