RN-21-U Roving Networks Inc, RN-21-U Datasheet - Page 14
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RN-21-U
Manufacturer Part Number
RN-21-U
Description
MODULE BLUETOOTH 2.0/EDR CLASS1
Manufacturer
Roving Networks Inc
Specifications of RN-21-U
Frequency
2.4GHz Center
Data Rate - Maximum
921kBaud
Modulation Or Protocol
FHSS
Applications
Bluetooth v2.0
Power - Output
16dBm
Sensitivity
-86dBm
Voltage - Supply
3 V ~ 3.6 V
Current - Receiving
60mA
Current - Transmitting
100mA
Data Interface
PCB, Surface Mount
Memory Size
8MByte Flash
Antenna Connector
PCB, Surface Mount
Operating Temperature
-40°C ~ 85°C
Package / Case
Module
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
www.rovingnetworks.com
I<,time>,<COD>
IN<time>,<cod>
IS<time>
IR<time>
H
K,
L
P,<char>
Q
R,1
T,<0,1>
W
809 University Avenue
Performs an inquiry scan. Default time is 10 seconds, maximum is 48. COD
parameter is optional, 0 or no entry looks for all device classes. When entering a
COD you must provide all six characters, i.e. 0040F0 for COD 0x40F0. A maximum
of 9 devices will be returned. As devices are found, they are displayed in the format
below:
Performs an inquiry scan like the I command but does not return the Bluetooth name
so it returns much faster since getting the name requires a remote lookup for each
device found.
Performs an inquiry scan, with a COD of 0x001F00, which is the default COD for
Roving Networks Serial adapters and modules.
Performs an inquiry scan, with a COD of 0x0055AA, which is the special COD used
By Roving Networks Serial adapters and modules to enable “instant cable
replacement”.
Help, will print out a list of commands and their basic syntax
Kill (disconnect) from the current connection. The characters KILL<cr><lf> will be
echoed to the local UART once the connection is broken.
Link Quality. Returns real-time streaming link quality values at 5Hz. Value
returned is a two bytes separated by a comma. A value of “ff” is the highest value.
The first byte is the current reading the second byte is the low water mark.
Example output:
Passes thru any characters up to a CR or LF while in command mode.
Causes device to be non-discoverable and non-connectable (temporarily). Does not
survive a power cycle or reset. Used with the Z command below. Use the “W”
command to re-enable.
This command will return “Quiet” as a response.
To get the lowest power mode, first issue a Q, then a Z. Use the SNIFF settings to
get lowest power while connected.
Forces a complete reboot of the device (similar to a power cycle).
Pass receive data (from UART or BT) while in command mode. Returns (T=0 , T=1
based on input).
Re-enables discovery and connection. This command reloads the stored value of the
Inquiry and Page Window to re-enable. For example, to turn off Discovery but still
allow connections, send an “SI,0000” command, and follow it with “W” command.
This command returns “Wake” as a response.
•
Los Gatos, CA 95032
RSSI =ff,e6
<BT address>,<BT name>,<COD>
00A053000123,MySerialPort,72010C
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•
Tel (408) 395-6539
rn-bluetooth-um Version 4.77 1/24/2011
Advanced User Manual
• info@RovingNetworks.com