Closed julien78910 closed 7 years ago
Hello. I am confused now.
Thank you for the fix and your time. I am happy to be helpful :)
I didn't see the table from Semtech but it is weird that the channels 0, 1, 2 are the same as the 5, 6 and 7. Moreover, it is also weird that the Rx2 default frequency (869.525) is not availbale. Without this frequency, how my devices are supposed to receive the messages ? I would have to change the Rx2 frequency of my devices to one from those I listed but then, I should be able to choose the frequency for unicast message on class C on the server to match the new Rx2 frequency. From what I know, there is indeed 3 mandatory channels that must be implemented on the end device (868.1, 868.3 and 868.5) and the 5 others can be freely attributed (section 2.1.2 of the LoRaWan Regional specification) but surely, you have more informations than me.
I wonder why I made all this configuration, because you are right. Multicast should be delivered on Rx2 so we probably dont need any channel setting, right? Rx2 is fixed.
Yes I also think that multicast should be on Rx2. However, your channel settings can be useful if someone want to change the Rx2 frequency which seems to be allowed by the LoRaWan specifications (3.3.2) but for now, it is not a big deal if it is fixed.
I made another update to make the RF parameters fixed. Please try if you want.
I tested the update and it seems to work fine, the mutlicast message is succesfully received and sent by the Gateway (I still have a problem but it is on my LoRa module and not related to this project). Thank you for the quick fix
Hello,
I wanted to try multicast but I didn't succeed to make it work. I tried to send this: {"data":"4546","port":2,"time":"immediately"} through mqtt topic, the lorawan-server detect it and send the data to the Gateway but the Gateway can't send the message because of missing field. Indeed, When I checked the log, I saw that the coding rate is set to 0 in the data sent to the Gateway when I set 4/5 in the server. Moreover, I don't know if it is a bug or done on purpose but I can't use the 869.525 MHz frequency with the channel field. Currently, the frequencies we can use with the lorawan server for europe are: Channel / frequency 0 -> 868.1 1 -> 868.3 2 -> 868.5 3 -> 867.7 4 -> 867.9 5 -> 868.1 6 -> 868.3 7 -> 868.5 8 -> 868.8
Thanks, Julien.