OTAA does not join for US config. using last firmware

[blackansible]

I changed frequencies as recommended.
Changed dr_max=4 instead of 5
Changed socket.SO_DR, 3
But funciton lora.has_joined(): always send false

With abp works without problem. Do you see an error in my code. I read all the post about OTAA and nothing. Somebody from pycom engineering.

Best regards,

from network import LoRa
import socket
import binascii
import struct
import time

# Initialize LoRa in LORAWAN mode.
lora = LoRa(mode=LoRa.LORAWAN)

# create an OTA authentication params
dev_eui = binascii.unhexlify('70 B3 D5 49 9E A9 24 C0'.replace(' ',''))
app_eui = binascii.unhexlify('70 B3 D5 7E F0 00 5A 3F'.replace(' ',''))
app_key = binascii.unhexlify('36 AB 76 25 FE 77 77 68 81 68 3B 49 53 00 FF D6'.replace(' ',''))

# remove channels
for channel in range(0, 72):
    lora.remove_channel(channel)

# set the default channel to the same frequency (must be before sending the OTAA join request)
lora.add_channel(0, frequency=903900000, dr_min=0, dr_max=4)

# join a network using OTAA
lora.join(activation=LoRa.OTAA, auth=(dev_eui, app_eui, app_key), timeout=0)

# wait until the module has joined the network
while not lora.has_joined():
    time.sleep(2.5)
    print('Not joined yet...')

# 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, 3)

# make the socket blocking
s.setblocking(False)

time.sleep(5.0)

for i in range (200):
    s.send(b'PKT #' + bytes([i]))
    time.sleep(4)
    rx = s.recv(256)
    if rx:
        print(rx)
    time.sleep(6)

[jmarcelino]

@blackansible
Try this modification in your nanogateway.py code:

https://forum.pycom.io/post/8290

[blackansible]

@jmarcelino Lopy gateway

[jmarcelino]

@blackansible
What are you using as your LoRaWAN gateway?