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4.2 Wake-Up mode
WKP pin: When the module enters the low power mode, the user can pull down the wake-up via WKP pin.
Serial port wake-up: When the module enters the low-power mode, any data received by the serial port will wake up
the module. The frame data module does not operate on it. At this time, the serial port outputs "STA: wakeup".
In wake-up mode, the module can broadcast, can enter configuration mode, can be scanned and connected. If the
main device is connected to the module, the serial port output "STA: connect", the module can transmit data transparently,
after the device is disconnected, the serial port output "STA: disconnect".
4.3 Configuration mode
Configuration mode: AT command can be operated by default when the module is powered on (See
operation
). If the MOD pin is pulled down in connection state, the module will also enter the configuration mode.
Description: Bluetooth communication is interrupted in configuration mode, data cannot be sent or received.
4.4 Data valid indication
In the transparent transmission mode, the user can set the delayed output data by "AT++DATDLY=1" command.
After the delay output is set, the DATA_LINK pin of the module will output low level 10ms before the data is sent, so as
to wake up the external MCU. After 10 ms, the data will be sent, and the DATA_LINK pin is pulled high after the data
transmission is completed. As shown in the figure:
4.5 IO level reading
The user can request the
Read IO1
input)
4.6 IO output
The user can request IO2 output level by AT command "AT+IO2=1" or "AT+IO2=0"
(See
6.41 Set IO2 output
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pin
by AT command
specified IO
level
and
6.42 Set IO3
output).
AT+IO0?" or "AT+IO1?"(See
E104-BT05 User Manual
6. Instruction
6.39 Read IO0 inpu
and
6.40
8
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