S3-915M
User manual
21
Command
character
Command
Type
Command Format
response
CDATARATE
(
Set the
communication
rate
)
Test
command
AT+CDATARATE=?
+CDATARATE:
“
value
”
OK
Query
command
AT+CDATARATE?
+CDATARATE:<value>
OK
Setting
command
AT+CDATARATE =<value>
OK
Parameter
Description
<value>
：
as follows:
Rate value, the factory value is 3, the value range:
0 - SF12
，
BW125
1 - SF11
，
BW125
2 - SF10
，
BW125
3 - SF9
，
BW125
4 - SF8
，
BW125
5 - SF7
，
BW125
Return value
description
Example
AT+CDATARATE=1
OK
Precautions
Need to be set before sending data, invalid after ADR is enabled.
Command
character
Command
Type
Command Format
response
CRSSI
(
Query channel
signal strength
)
Test
command
AT+CRSSI=?
+CRSSI
OK
Query
command
AT+CRSSI FREQBANDIDX?
+CRSSI:
0:<Channel 0 rssi>
1:<Channel 1 rssi>
…
7:<Channel 7 rssi>
OK
Setting
command
<FREQBANDIDX>: Indicates the number of the frequency band, starting
from 0, and the 1A2 group number is 1
Returns the RSSI of 8 channels in a band.
Return value
description
Example
AT+CRSSI 1?
+CRSSI:
0:-157
1:-157
2:-157
3:-157
4:-157
5:-157
6:-157
7:-157
