User guide

Redpine Signals, Inc. Proprietary and Confidential. Page 21
R
R
S
S
9
9
1
1
1
1
0
0
-
-
N
N
-
-
1
1
1
1
-
-
2
2
2
2
/
/
2
2
4
4
/
/
2
2
8
8
S
S
o
o
f
f
t
t
w
w
a
a
r
r
e
e
P
P
r
r
o
o
g
g
r
r
a
a
m
m
m
m
i
i
n
n
g
g
R
R
e
e
f
f
e
e
r
r
e
e
n
n
c
c
e
e
M
M
a
a
n
n
u
u
a
a
l
l
V
V
e
e
r
r
s
s
i
i
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n
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4
4
.
.
1
1
5
5
140
19
149
20
153
21
157
22
161
23
165
24
Table 2: Channel Parameters for 5 Ghz
If this value is 0, the module scans in all the channels in the band that is
selected through the at+rsi_band command.
SSID: Optional Input. To scan a specific AP with a known SSID, or a hidden
Access Point, this parameter is used.
NOTE: In 5 GHz, DFS Client (802.11h) is supported. DFS client
implementation is internal to the module. The module, by default, does only
passive scan in DFS channels. If the Access Point detects radar signals, it
indicates to the module (client) to switch to a different channel by using the
“channel switch frame”. The module performs channel switch as per the AP‟s
channel switch parameters. There is no command required to enable this
feature, it is enabled by default.
Response
The response frame for the scan command is as shown below.
Result Code
Description
OK<uSSID1uMode1uRSSIval1>
<uSSID2uMode2uRSSIval2>…<upto
to the number of APs scanned>
uSSID (32 bytes, ASCII):SSID
of the Access Point. Filler bytes
(0x00) are put to complete 32
bytes, if actual SSID length is
not 32 bytes.
uMode(1 byte, hex):Security
Mode of the scanned Access
Point.
0x00 – Open (No Security)
0x01 – WPA
0x02 – WPA2
0x03 – WEP
uRssival(1 byte, hex):
Absolute value of the RSSI
information, returned in
hexadecimal, 1 byte. RSSI
information indicates the
signal strength of the
Access Point
The number of results is