Trying to connect to LTE-M1

ChielvDiepen

@optionseven I tried your code, result below. And yes, i updated tot 1.18.1.R1 (latest) and installed the catm1.dup again. So i started with a fresh install.

Configure PDP Context 1:

OK

Turning on modem

OK


+COPS: (2,"NL KPN","NL KPN","20408",7)(1,"vodafone NL","voda NL","20404",7),,(0,1,2,3,4),(0,1,2)

OK

Registering manually to KPN network:

ERROR

+CEREG: 2

Checking which network the modem is registered to

+COPS: 1

OK

Attaching to LTE network ..............

Version of modem:

SYSTEM VERSION

FIRMWARE VERSION
Bootloader0 : 5.1.1.0 [33080]
Bootloader1* : 5.1.1.0 [38638]
Bootloader2 : 5.1.1.0 [38638]
NV Info : 1.1,0,0
Software : 5.1.1.0 [38638] by robot-soft at 2018-08-20 09:51:46
UE : 5.0.0.0d
COMPONENTS
ZSP0 : 1.0.99-13604
ZSP1 : 1.0.99-12341

marmarti

Hi,

After upgrading im no longer able to attach. Im not able to find a solution and also not able to find how to return to stock modem firmware.

###CODE
from network import LTE
lte = LTE(carrier="at&t")
lte.attach(band=4)
def pretty(cmd):
response = lte.send_at_cmd(cmd).split('\r\n')
for line in response:
print(line)

#Troubleshooting

###get the System FSM
AT!="fsm"

SYSTEM FSM

+--------------------------+--------------------+
|            FSM           |        STATE       |
+--------------------------+--------------------+
| RRC TOP FSM              |CAMPED              |
| RRC SEARCH FSM           |CAMPED_ANY          |
| RRC ACTIVE FSM           |IDLE                |
| PMM PLMN FSM             |ANY_CAMPED          |
| EMM MAIN FSM             |NULL                |
| EMM AUTH FSM             |NULL                |
| EMM CONN FSM             |NULL                |
| EMM TAU FSM              |NULL                |
| EMM TEST FSM             |NULL                |
| ESM BEARER FSM           |BEARER_NULL         |
| SMS MT FSM               |IDLE                |
| SMS MO FSM               |IDLE                |
| HP MAIN FSM              |IDLE                |
| HP USIM FSM              |ABSENT              |
| HP SMS MO FSM            |IDLE                |
| HP SMS MT FSM            |IDLE                |
| HP CAT FSM               |NULL                |
+--------------------------+--------------------+

###Fet the PHY status
AT!="showphy"

DL SYNCHRO STATISTICS

Synchro state                         : DRX_SLEEP
PPU SIB1 ACQ watchdog                 : 0
Frequency Hypothesis RF  (Hz)         : 0
RSRP (dBm)                            : -98.70
RSRQ  (dB)                            : -13.89
Channel estimation state (Cell-spec.) : LOW CINR
Channel estimation state (UE-spec.)   : LOW CINR
Channel estimation state (MBSFN)      : LOW CINR
Channel estimation CINR               : 1.77
Channel length                        : SHORT

AGC
AGC RX gain (dB) : 55.16
RX PSD BO (dBFs) : -20.15
RX PSD (dBm) : -101.62
Noise level RS (dBm) : -101.98
Digital gain (dB) : 9.87
CINR RS (dB) : 3.28
NARROWBANDS
Last DL NB : Central
Last UL NB : 0
AFC
Frequency offset RF (Hz) : -1323
Frequency offset BB (Hz) : 0
PBCH
MIB received quantity : 14
MIB timeout quantity : 0

International Mobile Subscriber Identity

AT+CIMI=?
Error

###Signal quality
AT+CSQ
+CSQ: 15,99

PDP Context

AT+CGDCONT?
+CGDCONT: 1,"IP","web.iusacellgsm.mx",,,,0,0,0,0,0,0

###Network Registration
AT+CREG?
+CREG: 0,0

###Software Version
ATI1
UE5.0.0.0d
LR5.1.1.0-38638

###ATC Cell Monitoring
#Supported values
AT+SQNMONI=?
#Report from all cells
AT+SQNMONI=7
+SQNMONI: TELCEL Cc:334 Nc:020 RSRP:-1 RSRQ:-1 TAC:23330 Id:235 EARFCN:2050 PWR:-1 PAGING:128
+SQNMONI: TELCEL Cc:334 Nc:020 RSRP:-1 CINR:-1 RSRQ:-1 TAC:23330 Id:235 EARFCN:2050 PWR:-1 PAGING:128

###ICCID (card identification number) on the SIM card.
AT+SQNCCID
SQNCCID: "",""

###Conformance Test Mode
AT+SQNCTM?
+SQNCTM: standard

Elfred

I'am giving up.Tried everything to get my FiPy to work on the KPN network, but after several late evenings.....
After upgrading the modem tot 39529 he won't run anything anymore.
Sounds familiar ?
Elfred

wghirakawa

@elfred don't give up. I just got my FiPy working after a month of waiting. Come to find out it was a simple stupid mistake because of incorrect information in the docks. I was using lte.connect(cid=3), as per documentation when on Verizon's, network. This did not work for me. Until I changed to cid=1 and now it works without a hitch. Not sure why that is. I am currently using Verizon M2M Demo sim cards and have been working for the last several days. With some hiccups every now and then, due to power interruptions and server DNS errors.

Here is the code I use to connect to verizon now.

import socket
import ssl
import time
from network import LTE
import pycom
pycom.heartbeat(False)
debug = True

def at(cmd):
    ("modem command: {}".format(cmd))
    response = lte.send_at_cmd(cmd).split('\r\n')
    for line in response:
        print(line)

if (debug) : print('creating LTE object - carrier verizon')
# lte = LTE()
lte = LTE(carrier="verizon")
pycom.rgbled(0x7f0000) #red to show LTE established
# lte = LTE(carrier="at&t")         # instantiate the LTE object
if (debug) : print('resetting modem, may take up to 5 secs...')
if (debug) : print('attaching...')
lte.attach()        # attach the cellular modem to a base station
# lte.attach(band=13)        # attach the cellular modem to a base station

while not lte.isattached():
    if (debug) : print('waiting for isattached...')
    time.sleep_ms(1000)
pycom.rgbled(0x7f7f00) #yellow to show LTE attached
if (debug) : print('connecting...')
# lte.connect()       # start a data session and obtain an IP address
lte.connect(cid=1)    # cid=3 for verizon - start a data session and obtain an IP address
while not lte.isconnected():
    if (debug) : print('waiting for isconnected...')
    time.sleep_ms(500)
pycom.rgbled(0x00007f) #blue to show LTE attached
if (debug) : print('create socket')
s = socket.socket()

if (debug) : print("Connect to: www.ces-web.com")
sockaddr = socket.getaddrinfo('www.google.com', 80)[0][-1]

#print("Connect to: www.google.com")
#s = ssl.wrap_socket(s)
#sockaddr = socket.getaddrinfo('www.google.com', 443)[0][-1]

if (debug) : print("socket address: {}".format(sockaddr))

s.connect(socket.getaddrinfo('www.google.com', 80)[0][-1])
pycom.rgbled(0x007f00) #green to show LTE attached
if (debug) : print("send GET request")
s.send(b"GET / HTTP/1.0\r\n\r\n")
if (debug) : print("receive response")
if (debug) : print(s.recv(16))
s.close()
if (debug) : print("socket closed")
pycom.heartbeat(True)

Elfred

@wghirakawa Thanks for the encouragement. After a night sleep I picked it up again. Did a hard reset of the modem, uploaded the latest firmware again (CATM1-39529.dup) and got the equipment running again. But no, no attachment whatsoever. I think I have to dive into the firmware software.

kjm

@elfred I had a gpy lte modem die on me. After trying everything I could think of I purchased another gpy and all good again. So weird because wifi, power consumption & all the other functionality still OK. For what it's worth a dead modem fingerprint looks like

SYSTEM FSM
==========
    +--------------------------+--------------------+
    |            FSM           |        STATE       |
    +--------------------------+--------------------+
    | RRC TOP FSM              |STOPPED             |
    | RRC SEARCH FSM           |NULL                |
    | RRC ACTIVE FSM           |NULL                |
    | PMM PLMN FSM             |NULL                |
    | EMM MAIN FSM             |NULL                |
    | EMM AUTH FSM             |NULL                |
    | EMM CONN FSM             |NULL                |
    | EMM TAU FSM              |NULL                |
    | EMM TEST FSM             |NULL                |
    | ESM BEARER FSM           |BEARER_NULL         |
    | SMS MT FSM               |IDLE                |
    | SMS MO FSM               |IDLE                |
    | HP MAIN FSM              |IDLE                |
    | HP USIM FSM              |READY               |
    | HP SMS MO FSM            |IDLE                |
    | HP SMS MT FSM            |IDLE                |
    | HP CAT FSM               |IDLE                |
    +--------------------------+--------------------+

OK

and


DL SYNCHRO STATISTICS
=====================
    Synchro state                         : OFF
    PPU SIB1 ACQ watchdog                 : 0
    Frequency Hypothesis RF  (Hz)         : 0
    RSRP (dBm)                            : 0.00
    RSRQ  (dB)                            : 0.00
    Channel estimation state (Cell-spec.) : LOW CINR
    Channel estimation state (UE-spec.)   : LOW CINR
    Channel estimation state (MBSFN)      : LOW CINR
    Channel estimation CINR               : 0.00
    Channel length                        : SHORT
  AGC
    AGC RX gain (dB)                      : 0.00
    RX PSD BO (dBFs)                      : 0.00
    RX PSD (dBm)                          : 0.00
    Noise level RS (dBm)                  : 0.00
    Digital gain (dB)                     : 0.00
    CINR RS (dB)                          : 0.00
  NARROWBANDS
    Last DL NB                            : 0
    Last UL NB                            : 0
  AFC
    Frequency offset RF  (Hz)             : 0
    Frequency offset BB  (Hz)             : 0
  PBCH
    MIB received quantity                 : 0
    MIB timeout quantity                  : 0

Have you checked your sim in another device to verify it's OK?

Paul Thornton

@kjm Sad to see you lost a board. Thanks for the fingerprint. That's actually quite usefull.

Elfred

@kjm Thanks for the reply. Funny thing is that sometimes I get the fingerprint you've shown in you're post and the other time I get good result in terms of RSRP, RSRQ etc.
I'll check the SIM in an other device. Good thinking.
In the Jasper Wireless portal of KPN I can do a diagnostics test. That one failed. I've asked the question to KPN, but no answer yet.

Thanks again and lets make IoT really work

Elfred

What I see in the FSM of @kjm is HP USIM FSM : Ready.
I See HP USIM FSM: Absent.

No wonder it's not working.
Can't figure out what's wrong.
Going back to KPN

Elfred

Entlich mal. I've got connection. Got finally a new SIM from KPN and it worked immediately . Thanks all for the encouraging words:-)
Now I can start my project.
Keep you posted.

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