Lora® Commands; Setmodulationparam; Table 8-4: Setmodulationparam Command; Table 8-5: Spreading Factor - Semtech LR1110 User Manual

8.3 LoRa® Commands

8.3.1 SetModulationParam

The command SetModulationParam( ) configures the modulation parameters for the selected modem. Since the
parameters are modem dependent, the description hereafter is valid only for the LoRa® modem.

Table 8-4: SetModulationParam Command

Byte 0
Data from Host 0x02
Data to Host Stat1
• SF defines the spreading factor:

Table 8-5: Spreading Factor

The SF5 and SF6 are compatible with the SX126x device family, but SF6 is not compatible with the SF6 used in the SX127x
family.
• BWL defines the LoRa® modulation bandwidth
Table 8-6: LoRa® Modulation Bandwidth
BWL
0x03
0x04
0x05
0x06
LR1110
User Manual Rev.1.0
UM.LR1110.W.APP March 2020
1
0x0F
IrqStatus
Stat2
(31:24)
SF
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
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2 3
SF BWL
IrqStatus
(23:16)
Description
LoRa_BW_62
LoRa_BW_125
LoRa_BW_250
LoRa_BW_500
4 5
CR LowDataRateOptimize
IrqStatus IrqStatus
(15:8) (7:0)
Description
SF5
SF6
SF7
SF8
SF9
SF10
SF11
SF12
Value
LoRa® Bandwidth 62.5 kHz
LoRa® Bandwidth 125 kHz
LoRa® Bandwidth 250 kHz
LoRa® Bandwidth 500 kHz
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