Spreading factor ? about mkrwan HOT 6 OPEN

Probably there is a way to do it by changing the LoRaWAN stack on the firmware but it's quite a big effort.

from mkrwan.

Hi @ldesomer,
the underlying firmware ( https://github.com/arduino/mkrwan1300-fw ) doesn't provide this yet, but we would be glad to receive pull requests 😉

from mkrwan.

Hi @facchinm,
Thanks for your reply, I'll try to work on it... How is the SF chosen by the firmware ? Or is it fixed ? :)

from mkrwan.

It looks like the spreading factor is only set during RF_TEST (https://github.com/arduino/mkrwan1300-fw/blob/ed493cec30273953e92ccdd210f2ef4240ef35fa/Projects/Multi/Applications/LoRa/AT_Slave/src/test_rf.c#L98), I don't know the LoRAWAN standard well enough to know if it can be changed (if not running point-to-point)

from mkrwan.

Hi, so am I reading correctly here - there is no way to configure the spread factor on the MKR1300 at sketch level? Or, is it something that would have to be done in firmware?

from mkrwan.

What you can do, is set the data rate (DR) using the dataRate() method. This configures one of the DR's from the LoRaWAN spec, each of which uses a specific SF. This does not allow choosing arbitrary or non-standard SF's, but is the normal way of configuring the DR/SF to use.

from mkrwan.