Chengdu Ebyte Electronic Technology Co., Ltd.
E104-BT20 User Manual
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Copyright ©2012–2020, Chengdu Ebyte Electronic Technology Co., Ltd.
16
Command: AT + MRAD?
Answer: + MRAD: 00: 00: 00: 00: 00: 00
OK—No Bluetooth connection has been established recently
6.2.23 Inquiring peer RSSI signal strength (valid in connected state)
Command
Answer
Parameter
AT+RSSI?
+ RSSI:<param>OK
param: signal strength
Only valid after the module has established a connection.
for example:Command:AT+RSSI?
RSSI:-26
OK
6.2.24 Disconnect (available when connected)
Command
Answer
Parameter
AT+DISC
+ DISC: SUCCESS
OK—Disconnect successfully
None
6.2.25 Connect device (available as host role)
Command
Answer
Parameter
AT+LINK=<param>
OK—success
FAIL—Failure
param: remote device Bluetooth address
Use the AT command to establish a connection with the slave under the master role.
for example:
Establish a connection with the slave Bluetooth device: 11: 22: 33: 44: 55: 66
Command:AT+LINK=11,22,33,44,55,66
CONNECTED SUCCESS
OK
6.2.26 Inquiring Bluetooth module working status
Command
Answer
Parameter
AT+STATE?
+ STATE:<param>OK
param:Module working status
“READY”
“PAIRABLE”
“AUTO CONNECT”
“CONNECTED”
“DISCONNECTED”
“UNKNOWN”
