LTE -NB connection issues
Do anyone had success with keeping a stable NB-IoT attachment through a sleep cycle.
I have previously succsessfully connected to the Telenor NB-IoT network, but are not able to do so suddenly. Further on I'm trying to understand how to get a stable connection after a deep sleep, using the py.go_to_sleep(False) command with the pytrack.
As far as I understand this command should keep the attachment to the network through a deep sleep cycle. The attachment is kept sometimes but not often enough to be able to use. Updated to newest firmware.
NB-IoT Firmware: (lte.send_at_cmd('ATI1') )
Minimum example code:
from network import LTE import time import machine lte = LTE() lte.init() #lte.reset() lte.attach(band=20, apn="mda.ee") i = 0 while not (lte.isattached() or i > 15): time.sleep(1) i=i+1 print("", i, " seconds passed") if i > 15: lte.reset() machine.reset() lte.connect() # start a data session and obtain an IP address while not lte.isconnected(): time.sleep(1) print("Connected")