case about ncs v2.5.0 serial_lte_modem add a user command AT#XPTGPS=1,2,3,4,5,6,7 connect nRF Cloud failed

[peter.min]

Hi,

1. I added an at instruction to the example serial_lte_modem to connect to the nRF Cloud but it always fails. What can I do?

2. The code is as follows:

7077.serial_lte_modem_ag3352.zip

3. Connection logs are as follows:

00> [00:00:00.253,906] <err> spi_nor: Device id 00 00 00 does not match config c2 28 17
00> *** Booting nRF Connect SDK v2.5.0 ***
00> [00:00:00.485,137] <inf> nrf_modem_lib_trace: Trace thread ready
00> [00:00:00.492,706] <inf> nrf_modem_lib_trace: Trace level override: 2
00> [00:00:00.495,727] <inf> slm: lib_modem init: 0
00> [00:00:00.496,215] <inf> slm: Serial LTE Modem
00> [00:00:00.504,058] <inf> slm_uart_handler: UART baud: 115200 d/p/s-bits: 3/0/1 HWFC: 1
00> [00:00:00.504,150] <inf> slm_at_host: at_host init done
00> [00:14:10.991,790] <inf> slm_at_ag3352: err = -22
00>
00> [00:14:10.991,821] <inf> slm_at_ag3352: param_count = 8
00>
00> [00:14:10.991,851] <inf> slm_at_ag3352: cmd1 = 1
00>
00> [00:14:10.991,851] <inf> slm_at_ag3352: cmd2 = 3
00>
00> [00:14:10.991,882] <inf> slm_at_ag3352: cmd3 =
00>
00> [00:14:10.998,443] <inf> slm_at_ag3352: activated = 0
00>
00> [00:14:10.998,474] <inf> slm_at_ag3352: ret = -77
00>
00> AT+CFUN?
00> +CFUN: 0
00>
00> OK
00>
00> AT+CFUN=4
00> OK
00>
00> AT%%XSYSTEMMODE=0,1,0,0
00> OK
00>
00> AT%%XSYSTEMMODE?
00> %XSYSTEMMODE: 0,1,0,0
00>
00> OK
00>
00> AT%%XICCID
00> ERROR
00>
00> AT+CFUN=1
00> OK
00>
00> AT+CESQ
00> +CESQ: 99,99,255,255,20,60
00>
00> OK
00>
00> AT+CGDCONT?
00> +CGDCONT: 0,"IPV4V6","CMIOT","10.133.40.185 2409:8D80:9101:476F:0001:0002:59D6:9BE8",AT#XNRFCLOUD=1
00> ERROR
00>
00> AT#XNRFCLOUD?
00>
00>
00> ERROR
00>
00> AT#XNRFCLOUD?
00>
00>
00> ERROR
00>
00> AT#XNRFCLOUD?
00>
00>
00> ERROR
00>
00> AT#XNRFCLOUD?
00>
00>
00> ERROR
00>
00> AT#XNRFCLOUD?
00>
00>
00> ERROR
00>
00> AT#XNRFCLOUD?
00>
00>
00> ERROR
00>
00> AT#XNRFCLOUD?
00>
00>
00> ERROR
00>
00> AT#XNRFCLOUD?
00>
00>
00> ERROR
00>
00> AT#XNRFCLOUD?
00>
00>
00> ERROR
00>
00> AT#XNRFCLOUD?
00>
00>
00> ERROR
00>
00> [00:15:56.080,871] <inf> slm_at_ag3352: LTE activated
00>
00> [00:15:56.080,902] <inf> slm_at_ag3352: cfun_mode = 1

4.In addition, the device automatically restarts at the end of the log. How can I solve the restart problem?

5. Based on the example serial_lte_modem_, the following modifications are made:
(1) Set the network mode to NB
(2) Added an AT trigger instruction    AT#XPTGPS=1,2,3,4,5,6,7

6.Test board: PCA10090 1.0.0   sdk:NCS V2.5.0

7.Send instructions AT#XNRFCLOUD=1 in the LTE Link Monitor
You can connect to the nRF Cloud

Need to pay attention to the file and location

Thank you for all your assistance.
Kind regards,
Peter.Min

[Øyvind]

Hello, 

My apologies for the delayed answer. 

First off all, have you provisioned/onboarded your device to nRF Cloud? Are you able to connect to nRF Cloud using the default Serial LTE Modem?

From the logs there are a couple of errors from src\peter\slm_at_ag3352.c, I assume. Have you verified that the issue is not in with this custom code?

4.In addition, the device automatically restarts at the end of the log. How can I solve the restart problem?

Do you have any indication to what causes this issue?

Will look into this and get back to you with an answer within today or tomorrow.

Kind regards,
Øyvind

[peter.min]

Hi Øyvind,

any update?

Thank you for all your assistance.
Kind regards,
Peter.Min

[Håkon Alseth]

Hi Peter,

 

My apologies for the late reply. 

All at commands that start with "AT#" are SLM specific AT commands, and will return an error if you call them through "nrf_modem_*" API. I would recommend that you instead send these through the UART API. Right now, there are no direct methods of issuing AT# prefixed commands, but you can have a look at the function "slm_at_parse".

 

Kind regards,

Håkon

[peter.min]

Hi  Håkon Alseth,

The 1 instruction is a custom instruction that I added based on the 2 documentation.

As a custom directive, it is allowed to use this way, how do you explain this?

1.AT#XPTGPS=1,2,3,4,5,6,7 

2.ncs/v2.5.0/peter/serial_lte_modem_ag3352/doc/slm_extending.rst

Thank you for all your assistance.
Kind regards,
Peter.Min

[Håkon Alseth]

Hi Peter,

 

You cannot send a AT# prefixed command to function "nrf_modem_*", which AT#XPTGPS currently does.

The document that you are referring to is how to add a custom AT# command, and it shows how this can be done. However, if this AT# command also calls other AT#-prefixed commands, it will not currently work. As mentioned, please have a look at the slm_at_parse function, as there is currently no direct function to invoke at# prefixed commands directly.

 

Kind regards,

Håkon

[peter.min]

Hi,

I have understood

Thank you for all your assistance.
Kind regards,
Peter.Min