Gpy + Hologram in Europe

[Luka Basek]

To continue of the topics:

• Re: GPY with hologram SIM 2020
• RE: GPy with Hologram.io SIM

Hi everyone,

I have setup: Gpy, Pytrack 2.0, LTE antenna, Hologram SIM card and I would like to connect my Gpy with network.
I follow example (LTE Examples) and can not successfully attach my SIM card to global network.
I’m pretty new in embedded development so I would really thankfully if you can help me with the questions/suggestions. Im from in Europe - Croatia.

Here is my observation:

• Looks like my sim card is available on Gpy:

AT+CPIN
+CPIN: READY
OK

• When trying attach SIM card on network , always receiving status 2 -> (not registered, but MT is currently searching a new operator to register to) and after some time I receive +CEREG: 2,4

AT+CEREG?
+CEREG: 2,0
OK

• Signal strength is always 99,99

AT+CSQ
+CSQ: 99,99
OK

• Command for list of currently defined PDP Context returns error

AT+CDGCONT?
ERROR

• With AT+COPS cannot found any available operator

AT+COPS=?
+COPS: ,,(0,1,2,3,4),(0,1,2)
OK

My modem version is:

UE5.0.0.0d
LR5.1.1.0-41065

Here is my sample code:

lte = LTE()

print("IMEI:", lte.imei())
print("ICCID:", lte.iccid())

send_at_cmd_pretty("AT+CPIN?")
send_at_cmd_pretty('AT+CSQ')
send_at_cmd_pretty('AT+COPS=?')

send_at_cmd_pretty('AT+CGDCONT=1,"IP","hologram"')
send_at_cmd_pretty('AT+CFUN=0')
send_at_cmd_pretty('AT+CEREG=2')

send_at_cmd_pretty('AT+CFUN=1')
send_at_cmd_pretty('AT!="showinit"')

lte.attach(band = 20, apn="hologram")

time.sleep(1.0)

while lte.isattached() == False:
    # EPS Network Registration Status:
    # 0 - not registered
    # 1 - registered, home network
    # 2 - not registered, but searching...
    # 3 - registration denied
    # 4 - unknown (out of E-UTRAN coverage)
    # 5 - registered, roaming

    send_at_cmd_pretty('AT!="showphy"')     
    send_at_cmd_pretty('AT!="fsm"') 
    send_at_cmd_pretty('AT+CEREG?')
    time.sleep(5.0)

If you need more information, let me know. Thanks a lot!