STMicroelectronics P-NUCLEO-LRWAN2, Руководство пользователя

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• Format:
AT+CH=0~7,freq,radio // Set multi SF LoRa channel
AT+CH=8,freq,radio,sf,bw // Set standard LoRa channel
AT+CH=9,freq,radio // Set FSK channel
AT+CH=0~9,0 // Turn off a channel
AT+CH=0~9,OFF // Turn off a channel
AT+CH=band // Set to predefined channel plan
• Return:
+CH: 0~7, freq, radio, SF7/SF12, BW125KHz (LORA_MULTI_SF)
+CH: 8, freq, radio, SFx, BWxxxKHz (LORA_STANDARD)
+CH: 9, freq, radio, 50Kbps (FSK)
Refer to [3] for more details.
Predefined channels are available for quick setting of the frequency plan. Use the
AT+CH=band
command to
use the predefined channels. The available bands are EU868, US915, EU433, CN780, AU915, AS923, KR920,
CN470, CN470 prequel, and IN865.
Table 6 shows the corresponding frequencies in MHz.
Table 6. Predefined frequency channel plans
CH EU868 US915 EU433 CN780 AU915 AS923 KR920 CN470
CN470
Prequel
IN865
0 867.1 902.3 433.175 779.5 915.2 923.2 922.1 470.3 471.5 865.0625
1 867.3 902.5 433.375 779.7 915.4 923.4 922.3 470.5 471.7 865.2625
2 867.5 902.7 433.575 779.9 915.6 923.6 922.5 470.7 471.9 865.4625
3 867.7 902.9 433.775 780.1 915.8 923.8 922.7 470.9 472.1 865.6625
4 867.9 903.1 433.975 780.3 916.0 924.0 922.9 471.1 472.3 865.985
5 868.1 903.3 434.175 780.5 916.2 924.2 923.1 471.3 472.5 866.185
6 868.3 903.5 434.375 780.7 916.4 924.4 923.3 471.5 472.7 866.385
7 868.5 903.7 434.575 780.9 916.6 924.6 923.5 471.7 472.9 866.585
8
868.3
BW250
SF7
903.0
BW500
SF8
OFF OFF
915.9
BW500
SF8
OFF OFF OFF OFF OFF
9
868.8
FSK
50 Kbps
OFF OFF OFF OFF OFF OFF OFF OFF OFF
For instance, to set the EU868 band plan, send AT command
AT+CH=EU868
.
AT+CH=EU868
AT+CH=0,867.1,A
AT+CH=1,867.3,A
AT+CH=2,867.5,A
AT+CH=3,867.7,A
AT+CH=4,867.9,B
AT+CH=5,868.1,B
AT+CH=6,868.3,B
AT+CH=7,868.5,B
AT+CH=8,868.3,B,7,250
AT+CH=9,868.8
UM2587
Configuring the gateway to use a different frequency band
UM2587 - Rev 3
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