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Lora-net / lora_gateway

Driver/HAL to build a gateway using a concentrator board based on Semtech SX1301 multi-channel modem and SX1257/SX1255 RF transceivers.
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Multi-receive on CN470 Band #45

Closed ckt1010 closed 3 years ago

ckt1010 commented 7 years ago

Hi all, Did some one test this code on CN470 Band before? There is a strong things from my test, your can see my log below.

lgw_receive:1120: FIFO content: 3 60 0 7 19 lgw_receive:1139: [0 17] Note: LoRa packet lgw_receive:1120: FIFO content: 2 89 0 5 19 lgw_receive:1139: [6 17] Note: LoRa packet lgw_receive:1120: FIFO content: 1 b2 0 5 19 lgw_receive:1139: [7 17] Note: LoRa packet

INFO: Received pkt from mote: 0603F073 (fcnt=0)

INFO: Received pkt from mote: 0603F073 (fcnt=0)

JSON up: {"rxpk":[{"tmst":20893108,"chan":6,"rfch":0,"freq":475.900000,"stat":1,"modu":"LORA","datr":"SF12BW125","codr":"4/5","lsnr":-12.0,"rssi":-64,"size":25,"data":"gHPwAwaAAAACQArgE/88ZErlDBWapnChrA=="},{"tmst":20893108,"chan":7,"rfch":0,"freq":476.100000,"stat":1,"modu":"LORA","datr":"SF12BW125","codr":"4/5","lsnr":10.2,"rssi":-13,"size":25,"data":"gHPwAwaAAAACQArgE/88ZErlDBWapnChrA=="}]} INFO: [up] PUSH_ACK received in 0 ms INFO: [down] PULL_RESP received - token[0:0] :)

This fcnt 0 packet has been received twice(maybe three, first is CRC bad). But actually it only send one time, and at 476.1Mhz. Why it also receive at 475.9Mhz? Is there interference? Or maybe I make some mistake on config file?

mcoracin commented 7 years ago

Hello,

It seems that you are sending a very strong signal (rssi=-13 on 476.1). You may get an image of that signal on other channels.

Could you try the same with a lower power?

rbaldwin13 commented 3 years ago

In an effort to improve our customer support experience and in recognition that our support backlog on GitHub has historically exceeded the capacity of our engineering team, we have taken the difficult decision to focus on the most contemporary issues reported and to close all others without confirmation of resolution.

Our belief is that issues which have remained unresolved and unaltered for extended periods of time are less likely to continue to pose a significant problem to the user than when they were originally filed. More contemporary issues however may still be relevant and hence are more appropriate to prioritize.

For those users who remain interested in resolution of a reported issue that was closed, we are encouraging usage of our developer portal forums [https://forum.lora-developers.semtech.com/] and commercial support portal [https://semtech.force.com/ldp/ldp_support?__hstc=212684107.579a13689e43099691e328c9248e6ecc.1623103335314.1624470656297.1624635514661.6&__hssc=212684107.6.1624635514661&__hsfp=4176385453] as the preferred avenues to receive support. We will continue to monitor the GitHub issue trackers as well, but want to encourage all users to take advantage of the increased community presence on the developer portal. For commercial customers, we highly recommend using the commercial support portal which is uniquely tailored to service such support requests.