E: Cloud MQTT input error: -128 // Socket is not connected

Hello there,

I'm trying to connect to the AWS cloud. However, when I attempt to connect, it gives out error 128. Which, accoring to this table, means there's no connected socket.

The complete error message:

AWS_IOT_EVT_CONNECTING
+CSCON: 1
RRC mode: Connected
AWS_IOT_EVT_DISCONNECTED
E: Cloud MQTT input error: -128
+CSCON: 0
RRC mode: Idle
Next connection retry in 30 seconds

I've also taken a look in this thread. Here, the issue was that OP didn't use CA1 when connecting. I do.

There's also some success. According to the AWS monitor, there's a "Get thing shadow" success rate of about 25%(15-6). Could this indicate a signal issue? I know my reception isn't great. Or should I look somewhere in my code or AWS settings?

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0 user77062 over 4 years ago

Hello,

Could you please elaborate more in what sample you are running? Have you configured the correct certificates, as per Creating a thing in AWS IoT.

Can you run e.g. AT Client and provide the log output from running AT+CFUN? in the LTE Link Monitor.

What SIM are you using in your device?

Thanks.

Kind regards,
Øyvind
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0 user113581 over 4 years ago in reply to user77062
Hello, apologies for the incomplete data. I'm running the AWS_IOT sample. I've just double checked and yes, I have followed all the steps from the tutorial.

The output from the AT_Client sample:

*** Booting Zephyr OS build v2.7.99-ncs1 *** The AT host sample started AT+CFUN? +CFUN: 0 OK

user77062 said:
What SIM are you using in your device?

I'm using a hologram sim card.
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0 user77062 over 4 years ago in reply to user113581

Sevn said:
The output from the AT_Client sample:

Sorry, I forgot to add that you need to run AT+CFUN=1, and then AT+CFUN?
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0 user113581 over 4 years ago in reply to user77062
*** Booting Zephyr OS build v2.7.99-ncs1 *** The AT host sample started AT+CFUN=1 OK AT+CFUN? +CFUN: 1 OK

Here's the returns from the AT client when starting with AT+CFUN=1 and after the OK, AT+CFUN?.
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0 user77062 over 4 years ago in reply to user113581

If using LTE Link Monitor, please ensure that you have enabled automatic requests.

The reason for this is that LTE Link Monitor will print several lines of important information returned by misc. AT commands, among others reception, etc.
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0 user77062 over 4 years ago in reply to user113581

If using LTE Link Monitor, please ensure that you have enabled automatic requests.

The reason for this is that LTE Link Monitor will print several lines of important information returned by misc. AT commands, among others reception, etc.
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0 user113581 over 4 years ago in reply to user77062

*** Booting Zephyr OS build v2.7.99-ncs1  ***
The AT host sample started
AT+CFUN=1
OK
AT+CFUN?
+CFUN: 1
OK
AT+CGSN=1
+CGSN: "351358817002543"
OK
AT+CGMI
Nordic Semiconductor ASA
OK
AT+CGMM
nRF9160-SICA
OK
AT+CGMR
mfw_nrf9160_1.3.1
OK
AT+CEMODE?
+CEMODE: 2
OK
AT%XCBAND=?
%XCBAND: (1,2,3,4,5,8,12,13,18,19,20,25,26,28,66)
OK
AT+CMEE?
+CMEE: 0
OK
AT+CMEE=1
OK
AT+CNEC?
+CNEC: 0
OK
AT+CNEC=24
OK
AT+CGEREP?
+CGEREP: 0,0
OK
AT+CGDCONT?
OK
AT+CGACT?
OK
AT+CGEREP=1
OK
AT+CIND=1,1,1
OK
AT+CEREG=5
OK
AT+CEREG?
+CEREG: 5,4
OK
AT%CESQ=1
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT%XSIM=1
OK
AT%XSIM?
%XSIM: 1
OK
AT+CPIN?
+CPIN: READY
OK
AT+CPINR="SIM PIN"
+CPINR: "SIM PIN",3
OK
AT+CIMI
234507098655705
OK
%CESQ: 22,1,15,2
+CEREG: 2,"86C6","00945D0D",7
+CGEV: ME PDN ACT 0,0
+CNEC_ESM: 50,0
+CEREG: 5,"86C6","00945D0D",7,,,"11100000","11100000"
+CIND: "service",1
+CIND: "roam",1AT+CGDCONT?
+CGDCONT: 0,"IP","hologram","10.171.23.168",0,0
OK
AT+COPS=3,2
OK
AT+CGACT?
+CGACT: 0,1
OK
AT+COPS?
+COPS: 0,2,"20408",7
OK
AT%XCBAND
%XCBAND: 20
OK
AT+CGDCONT?
+CGDCONT: 0,"IP","hologram","10.171.23.168",0,0
OK
AT+CGACT?
+CGACT: 0,1
OK
%CESQ: 21,1,10,1
%CESQ: 22,1,15,2
%CESQ: 22,1,10,1
%CESQ: 21,1,15,2

Again, apologies for the incomplete information.