setsockopt fails with EOPNOTSUPP
When trying to run the LoRa ABP example code (from https://docs.pycom.io/pycom_esp32/library/network.LoRa.html#network.LoRa) on a LOPY, the following line:
s.setsockopt(socket.SOL_LORA, socket.SO_DR, 5)
fails with EOPNOTSUPP.
From the console, this happens:
Connecting to a Pycom device... Connected >>> s2=socket.socket(socket.AF_LORA,socket.SOCK_RAW) >>> s2.setsockopt(socket.SOL_LORA, socket.SO_DR, 5) Traceback (most recent call last): File "<stdin>", line 1, in <module> OSError: [Errno 95] EOPNOTSUPP >>> os.uname() (sysname='LoPy', nodename='LoPy', release='1.6.7.b1', version='v1.8.6-493-g99ac80fe on 2017-03-03', machine='LoPy with ESP32', lorawan='1.0.0')
This post is deleted!
@jmarcelino Thanks for the quick reply. Yes, I'm in US915, and setting it to 3 does solve the issue. Now to figure out how to view what I'm sending from the LoPy to the mLinux Conduit gateway... :-/
jmarcelino last edited by
SO_DR (datarate) 5 is only available in LoRa 868Mhz (EU868). Are you in a different region? For US915 it should be 3.
I'm experiencing the same problem. Was there ever any resolution to this based on the OP?
Use spaces in your keys
bucknall last edited by
Hi @bbfnq! Apologies, I've been travelling without access to a LoPy the last couple of days - I did try it on the weekend at a hackathon I was at and there didn't seem to be any problems - I'll have a go at it when I'm back at the office tomorrow!
@bucknall Hi - just wondered if you had had any success looking at this? Is there any more information I might provide to help?
The code is exactly as in the example (except that the keys are different).
from network import LoRa import socket import binascii import struct # Initialize LoRa in LORAWAN mode. lora = LoRa(mode=LoRa.LORAWAN) # create an ABP authentication params dev_addr = struct.unpack(">l", binascii.unhexlify('26011769'.replace(' ',''))) nwk_swkey = binascii.unhexlify('E44A1E59045F3CDD81A2606491F626D1'.replace(' ','')) app_swkey = binascii.unhexlify('85FFDD197900F1AD6D86F3E7DD9F46FC'.replace(' ','')) # join a network using ABP (Activation By Personalization) lora.join(activation=LoRa.ABP, auth=(dev_addr, nwk_swkey, app_swkey)) # create a LoRa socket s = socket.socket(socket.AF_LORA, socket.SOCK_RAW) # set the LoRaWAN data rate s.setsockopt(socket.SOL_LORA, socket.SO_DR, 5) # make the socket non-blocking s.setblocking(False) # send some data s.send(bytes([0x01, 0x02, 0x03])) # get any data received... data = s.recv(64) print(data)
from machine import UART import os uart = UART(0, 115200) os.dupterm(uart)
Running the code (either by resetting the PyCom, or by pressing the Run button in Pymakr) results in the following at the console:
Traceback (most recent call last): File "main.py", line 21, in <module> OSError: [Errno 95] EOPNOTSUPP
Also from the console:
>>> os.uname() (sysname='LoPy', nodename='LoPy', release='1.6.7.b1', version='v1.8.6-493-g99ac80fe on 2017-03-03', machine='LoPy with ESP32', lorawan='1.0.0')
We have 2 LoPy boards and the problem occurs with both.
bucknall last edited by