GPy with Hologram.io SIM
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@tlanier
Maybe Cat M1 coverage in your area just isn’t very good yet, Verizon only uses one band (band 13) for Cat M1 while on mobile phones they support more.
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After power off/on I'm now getting +CEREG: 2,4
It never gets the 2,5 you mentioned after 10 mins.
DL SYNCHRO STATISTICS
Synchro state : MIB DETECT PPU SIB1 ACQ watchdog : 0 Frequency Hypothesis RF (Hz) : -1000 RSRP (dBm) : -21474836.00 RSRQ (dB) : -25.99 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 : SHORTAGC
AGC RX gain (dB) : 54.90
RX PSD BO (dBFs) : -21.71
RX PSD (dBm) : -95.99
Noise level RS (dBm) : -124.46
Digital gain (dB) : 6.62
CINR RS (dB) : -16.11
NARROWBANDS
Last DL NB : Central
Last UL NB : 0
AFC
Frequency offset RF (Hz) : 47
Frequency offset BB (Hz) : 0
PBCH
MIB received quantity : 1394
MIB timeout quantity : 0OK
SYSTEM FSM
+--------------------------+--------------------+ | FSM | STATE | +--------------------------+--------------------+ | RRC TOP FSM |SCANNING | | RRC SEARCH FSM |WAIT_CELL_ID | | RRC ACTIVE FSM |NULL | | PMM PLMN FSM |ANY_WAITCELL | | 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 | +--------------------------+--------------------+OK
+CEREG: 2,4
OK
DL SYNCHRO STATISTICS
Synchro state : CELL SEARCH PPU SIB1 ACQ watchdog : 0 Frequency Hypothesis RF (Hz) : -1000 RSRP (dBm) : -21474836.00 RSRQ (dB) : -25.99 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 : SHORTAGC
AGC RX gain (dB) : 54.87
RX PSD BO (dBFs) : -21.44
RX PSD (dBm) : -96.46
Noise level RS (dBm) : -126.46
Digital gain (dB) : 10.13
CINR RS (dB) : -16.11
NARROWBANDS
Last DL NB : Central
Last UL NB : 0
AFC
Frequency offset RF (Hz) : 70
Frequency offset BB (Hz) : 0
PBCH
MIB received quantity : 1422
MIB timeout quantity : 0OK
SYSTEM FSM
+--------------------------+--------------------+ | FSM | STATE | +--------------------------+--------------------+ | RRC TOP FSM |SYNCING | | RRC SEARCH FSM |WAIT_SYNC | | RRC ACTIVE FSM |NULL | | PMM PLMN FSM |ANY_WAITCELL | | 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 | +--------------------------+--------------------+OK
+CEREG: 2,4
OK
DL SYNCHRO STATISTICS
Synchro state : IDLE PPU SIB1 ACQ watchdog : 1 Frequency Hypothesis RF (Hz) : -1000 RSRP (dBm) : -21474836.00 RSRQ (dB) : -25.99 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 : SHORTAGC
AGC RX gain (dB) : 54.87
RX PSD BO (dBFs) : -21.78
RX PSD (dBm) : -98.39
Noise level RS (dBm) : -126.46
Digital gain (dB) : 9.05
CINR RS (dB) : -16.11
NARROWBANDS
Last DL NB : Central
Last UL NB : 0
AFC
Frequency offset RF (Hz) : 43
Frequency offset BB (Hz) : 0
PBCH
MIB received quantity : 1429
MIB timeout quantity : 0OK
SYSTEM FSM
+--------------------------+--------------------+ | FSM | STATE | +--------------------------+--------------------+ | RRC TOP FSM |INITIAL | | RRC SEARCH FSM |INITIAL | | RRC ACTIVE FSM |NULL | | PMM PLMN FSM |PARKING | | 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 | +--------------------------+--------------------+OK
+CEREG: 2,4
OK
DL SYNCHRO STATISTICS
Synchro state : IDLE PPU SIB1 ACQ watchdog : 1 Frequency Hypothesis RF (Hz) : -1000 RSRP (dBm) : -21474836.00 RSRQ (dB) : -25.99 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 : SHORTAGC
AGC RX gain (dB) : 54.87
RX PSD BO (dBFs) : -21.78
RX PSD (dBm) : -98.39
Noise level RS (dBm) : -126.46
Digital gain (dB) : 9.05
CINR RS (dB) : -16.11
NARROWBANDS
Last DL NB : Central
Last UL NB : 0
AFC
Frequency offset RF (Hz) : 43
Frequency offset BB (Hz) : 0
PBCH
MIB received quantity : 1429
MIB timeout quantity : 0OK
SYSTEM FSM
+--------------------------+--------------------+ | FSM | STATE | +--------------------------+--------------------+ | RRC TOP FSM |INITIAL | | RRC SEARCH FSM |INITIAL | | RRC ACTIVE FSM |NULL | | PMM PLMN FSM |PARKING | | 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 | +--------------------------+--------------------+OK
+CEREG: 2,4
OK
DL SYNCHRO STATISTICS
Synchro state : IDLE PPU SIB1 ACQ watchdog : 1 Frequency Hypothesis RF (Hz) : -1000 RSRP (dBm) : -21474836.00 RSRQ (dB) : -25.99 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 : SHORTAGC
AGC RX gain (dB) : 54.87
RX PSD BO (dBFs) : -21.78
RX PSD (dBm) : -98.39
Noise level RS (dBm) : -126.46
Digital gain (dB) : 9.05
CINR RS (dB) : -16.11
NARROWBANDS
Last DL NB : Central
Last UL NB : 0
AFC
Frequency offset RF (Hz) : 43
Frequency offset BB (Hz) : 0
PBCH
MIB received quantity : 1429
MIB timeout quantity : 0OK
SYSTEM FSM
+--------------------------+--------------------+ | FSM | STATE | +--------------------------+--------------------+ | RRC TOP FSM |INITIAL | | RRC SEARCH FSM |INITIAL | | RRC ACTIVE FSM |NULL | | PMM PLMN FSM |PARKING | | 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 | +--------------------------+--------------------+OK
+CEREG: 2,4
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Mine has been running for about 10 minutes returning:
+CEREG: 2,0
My cell phone uses Verizon and it shows a strong 3 bar signal.
I'm going to try powering down and back up to see if that will help.
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That's great! 2,5 is what we want for Hologram (5 means attached as roaming)
So does the
while not lte.isattached():loop finish correctly then and move to the connection step - which means PPP is established?lte.connect() while not lte.isconnected(): time.sleep(1) print("Connected!")
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Looks like mine just needed to cycle a few more times as well, just got this:
+CEREG: 2,5,"CC14","031D4803",7
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@tlanier said in GPy with Hologram.io SIM:
RRC TOP FSM |STOPPED
Can you leave it for a minute or so please. You should see this changing to SCANNING but it's not immediate, it's done in cycles. Thanks.
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CAT M1 Test - V0.1 OK OK OK OK OK -- Scan options ------------------------------------------- | . Init Stored info use : true | . Init MRU freq use : true | . Init REG freq use : false | . Init FastScan use : true | . Init iterative band scan : false | . Init scan batch of freq : false | . Init hybrid 1 mode : false | . Init optim SIB rx : true | . Forced freq : false | . MRU cell use : true ----------------------------------------------------------- -- Scan Command config ---------------------------------------------------- | id | type | object | --------------------------------------------------------------------------- | 1 | BAND | (id:1) 4,13 | | 2 | DELAY | 5000 msec | | 3 | LOOP | jump to cmd:1, dur:5000ms | --------------------------------------------------------------------------- OK DL SYNCHRO STATISTICS ===================== Synchro state : IDLE PPU SIB1 ACQ watchdog : 0 Frequency Hypothesis RF (Hz) : 0 RSRP (dBm) : -21474836.00 RSRQ (dB) : -12.79 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) : 44.55 RX PSD BO (dBFs) : -21.06 RX PSD (dBm) : -85.55 Noise level RS (dBm) : -86.52 Digital gain (dB) : 6.53 CINR RS (dB) : 2.09 NARROWBANDS Last DL NB : Central Last UL NB : 0 AFC Frequency offset RF (Hz) : -359 Frequency offset BB (Hz) : 0 PBCH MIB received quantity : 83 MIB timeout quantity : 0 OK 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 |NULL | | HP SMS MO FSM |IDLE | | HP SMS MT FSM |IDLE | | HP CAT FSM |NULL | +--------------------------+--------------------+ OK +CEREG: 2,0 OK DL SYNCHRO STATISTICS ===================== Synchro state : IDLE PPU SIB1 ACQ watchdog : 0 Frequency Hypothesis RF (Hz) : 0 RSRP (dBm) : -21474836.00 RSRQ (dB) : -12.79 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) : 44.55 RX PSD BO (dBFs) : -21.06 RX PSD (dBm) : -85.55 Noise level RS (dBm) : -86.52 Digital gain (dB) : 6.53 CINR RS (dB) : 2.09 NARROWBANDS Last DL NB : Central Last UL NB : 0 AFC Frequency offset RF (Hz) : -359 Frequency offset BB (Hz) : 0 PBCH MIB received quantity : 83 MIB timeout quantity : 0 OK 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 |NULL | | HP SMS MO FSM |IDLE | | HP SMS MT FSM |IDLE | | HP CAT FSM |NULL | +--------------------------+--------------------+ OK +CEREG: 2,0
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Notice the first command (AT+CPIN?) generates an error.
CAT M1 Test - V0.1 ERROR OK OK OK OK OK OK OK OK DL SYNCHRO STATISTICS ===================== Synchro state : OFF PPU SIB1 ACQ watchdog : 0 Frequency Hypothesis RF (Hz) : 0 RSRP (dBm) : -21474836.00 RSRQ (dB) : -12.36 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) : 44.55 RX PSD BO (dBFs) : -21.15 RX PSD (dBm) : -85.50 Noise level RS (dBm) : -87.44 Digital gain (dB) : 6.48 CINR RS (dB) : 3.73 NARROWBANDS Last DL NB : Central Last UL NB : 0 AFC Frequency offset RF (Hz) : -359 Frequency offset BB (Hz) : 0 PBCH MIB received quantity : 1778 MIB timeout quantity : 0 OK 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 |NULL | | HP SMS MO FSM |IDLE | | HP SMS MT FSM |IDLE | | HP CAT FSM |NULL | +--------------------------+--------------------+ OK +CEREG: 2,0 OK DL SYNCHRO STATISTICS ===================== Synchro state : OFF PPU SIB1 ACQ watchdog : 0 Frequency Hypothesis RF (Hz) : 0 RSRP (dBm) : -21474836.00 RSRQ (dB) : -12.36 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) : 44.55 RX PSD BO (dBFs) : -21.15 RX PSD (dBm) : -85.50 Noise level RS (dBm) : -87.44 Digital gain (dB) : 6.48 CINR RS (dB) : 3.73 NARROWBANDS Last DL NB : Central Last UL NB : 0 AFC Frequency offset RF (Hz) : -359 Frequency offset BB (Hz) : 0 PBCH MIB received quantity : 1778 MIB timeout quantity : 0 OK 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 |NULL | | HP SMS MO FSM |IDLE | | HP SMS MT FSM |IDLE | | HP CAT FSM |NULL | +--------------------------+--------------------+ OK +CEREG: 2,0 OK
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Thanks @chrisgammell
Can you try this instead please:
send_at_cmd_pretty('AT+CFUN=0') send_at_cmd_pretty('AT+SQNCTM="verizon"') send_at_cmd_pretty('AT+CGDCONT=1,"IP","hologram"') send_at_cmd_pretty('AT+CEREG=2') send_at_cmd_pretty('AT+CFUN=1') send_at_cmd_pretty('AT!="showinit"') while not lte.isattached(): time.sleep(1) send_at_cmd_pretty('AT!="showphy"') send_at_cmd_pretty('AT!="fsm"') send_at_cmd_pretty('AT+CEREG?')The AT+SQNCTM="verizon"' setups up some other parameters for Verizon including scanning the correct bands. These should be reflected in the new debug command AT!="showinit" after CFUN=1
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Yes, I'm also getting +CSQ: 99,99
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Also I'm still getting 99,99 for AT+CSQ
Yes, I double checked, the antenna is plugged into the correct ports :-D
@tlanier, did you check that command on yours?
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@jmarcelino said in GPy with Hologram.io SIM:
AT+CEREG?')
Here's mine:
DL SYNCHRO STATISTICS ===================== Synchro state : CELL SEARCH PPU SIB1 ACQ watchdog : 1 Frequency Hypothesis RF (Hz) : -4000 RSRP (dBm) : -21474836.00 RSRQ (dB) : -22.71 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) : 52.76 RX PSD BO (dBFs) : -21.92 RX PSD (dBm) : -93.92 Noise level RS (dBm) : -123.92 Digital gain (dB) : 12.24 CINR RS (dB) : -9.76 NARROWBANDS Last DL NB : Central Last UL NB : 0 AFC Frequency offset RF (Hz) : 0 Frequency offset BB (Hz) : 0 PBCH MIB received quantity : 573 MIB timeout quantity : 0 OK SYSTEM FSM ========== +--------------------------+--------------------+ | FSM | STATE | +--------------------------+--------------------+ | RRC TOP FSM |SCANNING | | RRC SEARCH FSM |WAIT_CELL_ID | | RRC ACTIVE FSM |NULL | | PMM PLMN FSM |NORM_WAITCELL | | EMM MAIN FSM |REGISTERED | | EMM AUTH FSM |KASME_DEFINED | | EMM CONN FSM |EMM_IDLE | | EMM TAU FSM |NULL | | EMM TEST FSM |NULL | | ESM BEARER FSM |BEARER_ACTIVE | | 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 +CEREG: 2,4 OK DL SYNCHRO STATISTICS ===================== Synchro state : CELL SEARCH PPU SIB1 ACQ watchdog : 1 Frequency Hypothesis RF (Hz) : -2000 RSRP (dBm) : -21474836.00 RSRQ (dB) : -22.71 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) : 25.26 RX PSD BO (dBFs) : -21.92 RX PSD (dBm) : -93.92 Noise level RS (dBm) : -123.92 Digital gain (dB) : 4.74 CINR RS (dB) : -9.76 NARROWBANDS Last DL NB : Central Last UL NB : 0 AFC Frequency offset RF (Hz) : 0 Frequency offset BB (Hz) : 0 PBCH MIB received quantity : 573 MIB timeout quantity : 0 OK SYSTEM FSM ========== +--------------------------+--------------------+ | FSM | STATE | +--------------------------+--------------------+ | RRC TOP FSM |SCANNING | | RRC SEARCH FSM |WAIT_CELL_ID | | RRC ACTIVE FSM |NULL | | PMM PLMN FSM |NORM_WAITCELL | | EMM MAIN FSM |REGISTERED | | EMM AUTH FSM |KASME_DEFINED | | EMM CONN FSM |EMM_IDLE | | EMM TAU FSM |NULL | | EMM TEST FSM |NULL | | ESM BEARER FSM |BEARER_ACTIVE | | 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 +CEREG: 2,4 OK
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Thanks @chrisgammell !
The only AT command guide we can publish is this: https://docs.pycom.io/chapter/datasheets/downloads/Monarch_4G-EZ_LR5110_ATCommands_ReferenceManual_Rev3_NOCONFIDENTIAL.pdf
But really that should be enough, Sequans doesn't share the special AT!= commands even with us other than to solve particular problems.
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Ok thanks @tlanier
Can you try replacing your LTE attach code with:
lte = LTE() send_at_cmd_pretty('AT+CPIN?') 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!="clearscanconfig"') send_at_cmd_pretty('AT!="RRC::addscanfreq band=4 dl-earfcn=2175"') send_at_cmd_pretty('AT!="RRC::addscanfreq band=12 dl-earfcn=5095"') send_at_cmd_pretty('AT!="RRC::addscanfreq band=13 dl-earfcn=5230"') send_at_cmd_pretty('AT+CFUN=1') while not lte.isattached(): time.sleep(1) send_at_cmd_pretty('AT!="showphy"') send_at_cmd_pretty('AT!="fsm"') send_at_cmd_pretty('AT+CEREG?')This will produce a lot of debug output
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Hey Jose,
I've been testing it on a GPy, FiPy I have here. Is there an exhaustive list of the AT command set available anywhere? I'm also tracking my progress of troubleshooting on our forum where @tlanier also posted: https://community.hologram.io/t/pycom-gpy/1664
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Hologram tech support indicates that their SIM card should work with Verizon and AT&T with your GPy device. They've indicated that they have a GPy and will try the test at their site.
Yes, the LTE antenna is connected to the correct port.
Yes, I've waited many minutes at 3 indoor locations (work and home) and 1 outdoor location with no successful attach to tower.
A cell phone shows the Verizon signal strength to be 3 bars.
Any other ideas of what I can try?
Are there any modem commands that would help understand what is taking place?
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@tlanier
I'm really not sure about Hologram with our modules in the US, but lets do the basic checks first:- Have you connected the LTE antenna to the correct port - for the GPy should be next to LED
- Have you waited enough time? - sometimes it can take up to 45 seconds to attach
- Maybe reception isn't very good in your area - Cat M1 coverage is still limited. Try elsewhere or ideally outside.
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I've modified the program as recommended; still does not attach to the tower.
Hologram technical support has verified that the SIM should work with the GPy and CAT-M1 connecting to both Verizon and AT&T.
Any ideas of what I can do to troubleshoot further?
import pycom import socket import ssl import time from network import LTE def send_at_cmd_pretty(cmd): response = lte.send_at_cmd(cmd).split('\r\n') for line in response: print(line) print("CAT M1 Test - V0.1") pycom.heartbeat(False) lte = LTE() # instantiate the LTE object send_at_cmd_pretty('AT+CGDCONT=1,"IP","hologram"') lte.attach() # attach the cellular modem to a base station i = 0 while not lte.isattached(): i = i + 1 print("not attached: {}".format(i)) if (i % 2 == 0): pycom.rgbled(0xFF0000) # Red else: pycom.rgbled(0x000000) # off time.sleep(0.25) lte.connect() # start a data session and obtain an IP address i = 0 while not lte.isconnected(): i = i + 1 print("not connected: {}".format(i)) if (i % 2 == 0): pycom.rgbled(0x00FF00) # Green else: pycom.rgbled(0x000000) # off time.sleep(0.25) pycom.rgbled(0x0000FF) # Blue s = socket.socket() s = ssl.wrap_socket(s) s.connect(socket.getaddrinfo('www.google.com', 443)[0][-1]) s.send(b"GET / HTTP/1.0\r\n\r\n") print(s.recv(4096)) s.close() lte.disconnect() lte.dettach() pycom.rgbled(0x000000) # off
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As a first step maybe try:
lte.send_at_cmd('AT+CGDCONT=1,"IP","hologram"') lte.attach()to set the APN correctly
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@tlanier
I know everything is working with Verizon Cat M1 SIMs but not sure about Hologram.Maybe @benstr can test, the stack has had lots of updates since he last posted.
