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

LR1110
User Manual Rev.1.0
UM.LR1110.W.APP March 2020
55 of 130
Semtech
www.semtech.com
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.
• SF defines the 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 8-4: SetModulationParam Command
Byte 0 1 2 3 4 5
Data from Host 0x02 0x0F SF BWL CR LowDataRateOptimize
Data to Host Stat1 Stat2
IrqStatus
(31:24)
IrqStatus
(23:16)
IrqStatus
(15:8)
IrqStatus
(7:0)
Table 8-5: Spreading Factor
SF Description
0x05 SF5
0x06 SF6
0x07 SF7
0x08 SF8
0x09 SF9
0x0A SF10
0x0B SF11
0x0C SF12
Table 8-6: LoRa® Modulation Bandwidth
BWL Description Value
0x03 LoRa_BW_62 LoRa® Bandwidth 62.5 kHz
0x04 LoRa_BW_125 LoRa® Bandwidth 125 kHz
0x05 LoRa_BW_250 LoRa® Bandwidth 250 kHz
0x06 LoRa_BW_500 LoRa® Bandwidth 500 kHz