User's Manual

Enhanced Class 1 Bluetooth v2.1 Module
User’s Guide
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74
CONN-GUIDE-BT740_v0.2
This command sends DTR, RTS, DCD, and RI states to the peer device and also to specify a BREAK –
Future Feature.
Command Packet
Offset
Field
Value
Comments
0
LENGTH
7
Fixed
1
CHANNEL
0
Fixed
2
COMMAND
[CMD_
CONTROLMODEMLINES]
3
FLOW_IN
??
Runtime value
4
CHANNEL
1..7
Channel ID of an open channel
5
MODEM
Bit Mask
Bit 0: DTR state
Bit 1: RTS state
Bit 2: DCD state
Bit 3: RI state
Bits 4 .. 7 : Ignored
6
BREAK
0
Not Available
Response Packet
Offset
Field
Value
Comments
0
LENGTH
6
Fixed
1
CHANNEL
0
Fixed
2
COMMAND
[CMD_
CONTROLMODEMLINES]
3
FLOW_OUT
??
Runtime value
4
STATUS
As appropriate
5
CHANNEL
1..7
Echoed from command
The STATUS value is MPSTATUS_OK if the message succeeded.
Modem signals sent by the peer device present to the host in the message EVT_MODEM_STATUS
defined in subsequent chapters.
Note: BREAK signal capability is currently not provided by the lower stack, and so it is mentioned in
the context of this command message for future implementation.
8.12.1 RSSI and Link Quality
This command obtains the RSSI and Link Quality values for a given open connection. This is a parameter
associated with the ACL connection to a peer device and does not have any meaning with channel IDs.
Command Packet
Offset
Field
Value
Comments
0
LENGTH
10
Fixed
1
CHANNEL
0
Fixed