NRF9160DK PCA10090 0.8.5 - not able to connect to LTE tower at austria vienna

[schnuckelg]

dear folks,

I bougth my dev kit last week from digikey. I tried the asset tacker demo out of the box without success. I tried nearly everything. Updated the modem to v1.0.0 recompiled the demo application flashed it but the kit will not connect to an lte tower. than I flashed the at_client and stepped through every single at command and figured out that the modem remains in lte network searching by +CEREG: 2,4,"FFFE","FFFFFFFF",7. This state will not change anymore. I tried A1 Sim card and the iBasis which both can connect to an LTE tower with an quectel modem but not with the nrf9160dk.

Are there any other suggestions I can try, or does anyone need more information to keep going?

best regards,

schnuckelg

[AndreasF]

Hi schnuckelg.

Can you try to set the modem to NB-IoT mode by running xsystemmode=0,1,0,0 before you start the modem?

Best regards,

Andreas

[schnuckelg]

Dear AndreasF,

i sent modem to flight mode using at+cfun=4 then i set systemmode with at%ysystemmode=0,1,0,0 

to working at PS mode 2  (LTE Cat-NB1 supported) after all at commands this results in

AT+CEREG?
+CEREG: 2,2,"C372","000C7BD0",9 (eps not registered, searching)
OK

with both Sim cards (A1 and iBasis). Signal strength is -93dBm but there is no EPS network registration.

At this point I'm not very familiar with LTE mechanism maybe I have to learn more about ist.

Best regards,

schnuckelg 

[AndreasF]

Hi.

Can you please provide me with the full log of the procedure you're doing?

Best regards,

Andreas

[schnuckelg]

Hi AndreasF, 

this is the log from booting up with the asset_tracker demo till eps registration unknown.

***** Booting Zephyr OS v1.14.99-ncs2 *****
Flash region		Domain		Permissions
00 0x00000 0x08000 	Secure		rwxl
01 0x08000 0x10000 	Non-Secure	rwxl
02 0x10000 0x18000 	Non-Secure	rwxl
03 0x18000 0x20000 	Non-Secure	rwxl
04 0x20000 0x28000 	Non-Secure	rwxl
05 0x28000 0x30000 	Non-Secure	rwxl
06 0x30000 0x38000 	Non-Secure	rwxl
07 0x38000 0x40000 	Non-Secure	rwxl
08 0x40000 0x48000 	Non-Secure	rwxl
09 0x48000 0x50000 	Non-Secure	rwxl
10 0x50000 0x58000 	Non-Secure	rwxl
11 0x58000 0x60000 	Non-Secure	rwxl
12 0x60000 0x68000 	Non-Secure	rwxl
13 0x68000 0x70000 	Non-Secure	rwxl
14 0x70000 0x78000 	Non-Secure	rwxl
15 0x78000 0x80000 	Non-Secure	rwxl
16 0x80000 0x88000 	Non-Secure	rwxl
17 0x88000 0x90000 	Non-Secure	rwxl
18 0x90000 0x98000 	Non-Secure	rwxl
19 0x98000 0xa0000 	Non-Secure	rwxl
20 0xa0000 0xa8000 	Non-Secure	rwxl
21 0xa8000 0xb0000 	Non-Secure	rwxl
22 0xb0000 0xb8000 	Non-Secure	rwxl
23 0xb8000 0xc0000 	Non-Secure	rwxl
24 0xc0000 0xc8000 	Non-Secure	rwxl
25 0xc8000 0xd0000 	Non-Secure	rwxl
26 0xd0000 0xd8000 	Non-Secure	rwxl
27 0xd8000 0xe0000 	Non-Secure	rwxl
28 0xe0000 0xe8000 	Non-Secure	rwxl
29 0xe8000 0xf0000 	Non-Secure	rwxl
30 0xf0000 0xf8000 	Non-Secure	rwxl
31 0xf8000 0x100000 	Non-Secure	rwxl
Non-secure callable region 0 placed in flash region 0 with size 32.


SRAM region		Domain		Permissions
00 0x00000 0x02000	Secure		rwxl
01 0x02000 0x04000	Secure		rwxl
02 0x04000 0x06000	Secure		rwxl
03 0x06000 0x08000	Secure		rwxl
04 0x08000 0x0a000	Secure		rwxl
05 0x0a000 0x0c000	Secure		rwxl
06 0x0c000 0x0e000	Secure		rwxl
07 0x0e000 0x10000	Secure		rwxl
08 0x10000 0x12000	Non-Secure	rwxl
09 0x12000 0x14000	Non-Secure	rwxl
10 0x14000 0x16000	Non-Secure	rwxl
11 0x16000 0x18000	Non-Secure	rwxl
12 0x18000 0x1a000	Non-Secure	rwxl
13 0x1a000 0x1c000	Non-Secure	rwxl
14 0x1c000 0x1e000	Non-Secure	rwxl
15 0x1e000 0x20000	Non-Secure	rwxl
16 0x20000 0x22000	Non-Secure	rwxl
17 0x22000 0x24000	Non-Secure	rwxl
18 0x24000 0x26000	Non-Secure	rwxl
19 0x26000 0x28000	Non-Secure	rwxl
20 0x28000 0x2a000	Non-Secure	rwxl
21 0x2a000 0x2c000	Non-Secure	rwxl
22 0x2c000 0x2e000	Non-Secure	rwxl
23 0x2e000 0x30000	Non-Secure	rwxl
24 0x30000 0x32000	Non-Secure	rwxl
25 0x32000 0x34000	Non-Secure	rwxl
26 0x34000 0x36000	Non-Secure	rwxl
27 0x36000 0x38000	Non-Secure	rwxl
28 0x38000 0x3a000	Non-Secure	rwxl
29 0x3a000 0x3c000	Non-Secure	rwxl
30 0x3c000 0x3e000	Non-Secure	rwxl
31 0x3e000 0x40000	Non-Secure	rwxl

Peripheral		Domain		Status
00 NRF_P0		Non-Secure	OK
01 NRF_CLOCK		Non-Secure	OK
02 NRF_RTC1		Non-Secure	OK
03 NRF_NVMC		Non-Secure	OK
04 NRF_UARTE1		Non-Secure	OK
05 NRF_UARTE2		Secure		SKIP
06 NRF_TWIM2		Non-Secure	OK
07 NRF_SPIM3		Non-Secure	OK
08 NRF_TIMER0		Non-Secure	OK
09 NRF_TIMER1		Non-Secure	OK
10 NRF_TIMER2		Non-Secure	OK
11 NRF_SAADC		Non-Secure	OK
12 NRF_PWM0		Non-Secure	OK
13 NRF_PWM1		Non-Secure	OK
14 NRF_PWM2		Non-Secure	OK
15 NRF_PWM3		Non-Secure	OK
16 NRF_IPC		Non-Secure	OK
17 NRF_VMC		Non-Secure	OK
18 NRF_FPU		Non-Secure	OK
19 NRF_EGU1		Non-Secure	OK
20 NRF_EGU2		Non-Secure	OK
21 NRF_GPIOTE1		Non-Secure	OK

SPM: NS image at 0xc000
SPM: NS MSP at 0x2002ad60
SPM: NS reset vector at 0x13db5
SPM: prepare to jump to Non-Secure image.
***** Booting Zephyr OS v1.14.99-ncs2 *****
Application started
LTE LC config ...
at+cfun=4
OK
AT%xsystemmode=0,1,0,0
OK
AT+CFUN=1
OK
AT+CFUN?
+CFUN: 1
OK
AT+CGSN=1
+CGSN: "352656100218752"
OK
AT+CGMI
Nordic Semiconductor ASA
OK
AT+CGMM
nRF9160-SICA
OK
AT+CGMR
mfw_nrf9160_1.0.0
OK
AT+CEMODE?
+CEMODE: 0
OK
AT%XCBAND=?
%XCBAND: (1,2,3,4,5,8,12,13,17,19,20,25,26,28,66)
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=2
OK
AT+CEREG?
+CEREG: 2,0,"FFFE","FFFFFFFF",9
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
204080813519271
OK
AT+CEREG?
+CEREG: 2,0,"FFFE","FFFFFFFF",9
OK

CEREG again after about 1 minute

AT+CEREG?
+CEREG: 2,2,"C372","000C7BD0",9
OK

CEREG again after about 1 minute

AT+CEREG?
+CEREG: 2,4,"3AD4","0119F467",9
OK

best regards,

schnuckelg

[AndreasF]

Hi.

Can you try to add these two configurations to your prj.conf file as described here?

CONFIG_LTE_LEGACY_PCO_MODE=y
CONFIG_LTE_NETWORK_MODE_NBIOT=y

Best regards,

Andreas

[schnuckelg]

Dear Andreas,

this is the log after adding the 2 configuration lines to prj.conf of the asset_tracker demo and rebuilding it. Now the demo starts with PS mode 2 but also there is no eps registration.

***** Booting Zephyr OS v1.14.99-ncs2 *****
Flash region		Domain		Permissions
00 0x00000 0x08000 	Secure		rwxl
01 0x08000 0x10000 	Non-Secure	rwxl
02 0x10000 0x18000 	Non-Secure	rwxl
03 0x18000 0x20000 	Non-Secure	rwxl
04 0x20000 0x28000 	Non-Secure	rwxl
05 0x28000 0x30000 	Non-Secure	rwxl
06 0x30000 0x38000 	Non-Secure	rwxl
07 0x38000 0x40000 	Non-Secure	rwxl
08 0x40000 0x48000 	Non-Secure	rwxl
09 0x48000 0x50000 	Non-Secure	rwxl
10 0x50000 0x58000 	Non-Secure	rwxl
11 0x58000 0x60000 	Non-Secure	rwxl
12 0x60000 0x68000 	Non-Secure	rwxl
13 0x68000 0x70000 	Non-Secure	rwxl
14 0x70000 0x78000 	Non-Secure	rwxl
15 0x78000 0x80000 	Non-Secure	rwxl
16 0x80000 0x88000 	Non-Secure	rwxl
17 0x88000 0x90000 	Non-Secure	rwxl
18 0x90000 0x98000 	Non-Secure	rwxl
19 0x98000 0xa0000 	Non-Secure	rwxl
20 0xa0000 0xa8000 	Non-Secure	rwxl
21 0xa8000 0xb0000 	Non-Secure	rwxl
22 0xb0000 0xb8000 	Non-Secure	rwxl
23 0xb8000 0xc0000 	Non-Secure	rwxl
24 0xc0000 0xc8000 	Non-Secure	rwxl
25 0xc8000 0xd0000 	Non-Secure	rwxl
26 0xd0000 0xd8000 	Non-Secure	rwxl
27 0xd8000 0xe0000 	Non-Secure	rwxl
28 0xe0000 0xe8000 	Non-Secure	rwxl
29 0xe8000 0xf0000 	Non-Secure	rwxl
30 0xf0000 0xf8000 	Non-Secure	rwxl
31 0xf8000 0x100000 	Non-Secure	rwxl
Non-secure callable region 0 placed in flash region 0 with size 32.


SRAM region		Domain		Permissions
00 0x00000 0x02000	Secure		rwxl
01 0x02000 0x04000	Secure		rwxl
02 0x04000 0x06000	Secure		rwxl
03 0x06000 0x08000	Secure		rwxl
04 0x08000 0x0a000	Secure		rwxl
05 0x0a000 0x0c000	Secure		rwxl
06 0x0c000 0x0e000	Secure		rwxl
07 0x0e000 0x10000	Secure		rwxl
08 0x10000 0x12000	Non-Secure	rwxl
09 0x12000 0x14000	Non-Secure	rwxl
10 0x14000 0x16000	Non-Secure	rwxl
11 0x16000 0x18000	Non-Secure	rwxl
12 0x18000 0x1a000	Non-Secure	rwxl
13 0x1a000 0x1c000	Non-Secure	rwxl
14 0x1c000 0x1e000	Non-Secure	rwxl
15 0x1e000 0x20000	Non-Secure	rwxl
16 0x20000 0x22000	Non-Secure	rwxl
17 0x22000 0x24000	Non-Secure	rwxl
18 0x24000 0x26000	Non-Secure	rwxl
19 0x26000 0x28000	Non-Secure	rwxl
20 0x28000 0x2a000	Non-Secure	rwxl
21 0x2a000 0x2c000	Non-Secure	rwxl
22 0x2c000 0x2e000	Non-Secure	rwxl
23 0x2e000 0x30000	Non-Secure	rwxl
24 0x30000 0x32000	Non-Secure	rwxl
25 0x32000 0x34000	Non-Secure	rwxl
26 0x34000 0x36000	Non-Secure	rwxl
27 0x36000 0x38000	Non-Secure	rwxl
28 0x38000 0x3a000	Non-Secure	rwxl
29 0x3a000 0x3c000	Non-Secure	rwxl
30 0x3c000 0x3e000	Non-Secure	rwxl
31 0x3e000 0x40000	Non-Secure	rwxl

Peripheral		Domain		Status
00 NRF_P0		Non-Secure	OK
01 NRF_CLOCK		Non-Secure	OK
02 NRF_RTC1		Non-Secure	OK
03 NRF_NVMC		Non-Secure	OK
04 NRF_UARTE1		Non-Secure	OK
05 NRF_UARTE2		Secure		SKIP
06 NRF_TWIM2		Non-Secure	OK
07 NRF_SPIM3		Non-Secure	OK
08 NRF_TIMER0		Non-Secure	OK
09 NRF_TIMER1		Non-Secure	OK
10 NRF_TIMER2		Non-Secure	OK
11 NRF_SAADC		Non-Secure	OK
12 NRF_PWM0		Non-Secure	OK
13 NRF_PWM1		Non-Secure	OK
14 NRF_PWM2		Non-Secure	OK
15 NRF_PWM3		Non-Secure	OK
16 NRF_IPC		Non-Secure	OK
17 NRF_VMC		Non-Secure	OK
18 NRF_FPU		Non-Secure	OK
19 NRF_EGU1		Non-Secure	OK
20 NRF_EGU2		Non-Secure	OK
21 NRF_GPIOTE1		Non-Secure	OK

SPM: NS image at 0xc000
SPM: NS MSP at 0x2002ad60
SPM: NS reset vector at 0x13db5
SPM: prepare to jump to Non-Secure image.
***** Booting Zephyr OS v1.14.99-ncs2 *****
Application started
LTE LC config ...
AT+CFUN?
+CFUN: 1
OK
AT+CGSN=1
+CGSN: "352656100218752"
OK
AT+CGMI
Nordic Semiconductor ASA
OK
AT+CGMM
nRF9160-SICA
OK
AT+CGMR
mfw_nrf9160_1.0.0
OK
AT+CEMODE?
+CEMODE: 0
OK
AT%XCBAND=?
%XCBAND: (1,2,3,4,5,8,12,13,17,19,20,25,26,28,66)
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=2
OK
AT+CEREG?
+CEREG: 2,4,"FFFE","FFFFFFFF",9
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
204080813519271
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT+CESQ
+CESQ: 99,99,255,255,255,43
OK
AT+CEREG?
+CEREG: 2,4,"3AD4","0119F467",9
OK
AT+CEREG?
+CEREG: 2,4,"3AD4","0119F467",9
OK
AT+CEREG?
+CEREG: 2,4,"3AD4","0119F467",9
OK
AT+CEREG?
+CEREG: 2,4,"3AD4","0119F467",9
OK

Best regards,

schnuckelg

[AndreasF]

Hi.

Do you have CONFIG_NEWLIB_LIBC=y also defined? Could you please remove this and then try?

Best regards,

Andreas

[schnuckelg]

Dear Andreas,

this is my actual prj.conf of the asset_tracker demo app

# General config

# Removed by suggestion of AndreasF 
# CONFIG_NEWLIB_LIBC=y

CONFIG_TEST_RANDOM_GENERATOR=y
CONFIG_ASSERT=y
CONFIG_REBOOT=y

# Network
CONFIG_NETWORKING=y
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_OFFLOAD=y

# MQTT
CONFIG_MQTT_SOCKET_LIB=y
CONFIG_MQTT_LIB_TLS=y
CONFIG_MQTT_MAX_PACKET_LENGTH=2048

# LTE link control
CONFIG_POWER_OPTIMIZATION_ENABLE=n
CONFIG_LTE_LINK_CONTROL=y
CONFIG_LTE_AUTO_INIT_AND_CONNECT=n

# Added by suggestion of AndreasF
CONFIG_LTE_LEGACY_PCO_MODE=y
CONFIG_LTE_NETWORK_MODE_NBIOT=y

# Modem info
CONFIG_MODEM_INFO=y

# BSD library
CONFIG_BSD_LIBRARY=y

# nRF Cloud
CONFIG_NRF_CLOUD=y

# Sensors
CONFIG_GPS_USE_SIM=y
CONFIG_ACCEL_USE_SIM=y

# Library for buttons and LEDs
CONFIG_DK_LIBRARY=y
CONFIG_DK_LIBRARY_INVERT_LEDS=n

# Console
CONFIG_CONSOLE_SUBSYS=y
CONFIG_CONSOLE_HANDLER=y
CONFIG_CONSOLE_GETCHAR=y

# Main thread
CONFIG_MAIN_THREAD_PRIORITY=7

# Heap and stacks
CONFIG_HEAP_MEM_POOL_SIZE=16384
CONFIG_MAIN_STACK_SIZE=8192
CONFIG_GPS_SIM_THREAD_STACK_SIZE=1024
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
CONFIG_HW_STACK_PROTECTION=y

# Disable native network stack to save some memory
CONFIG_NET_IPV4=n
CONFIG_NET_IPV6=n
CONFIG_NET_UDP=n
CONFIG_NET_TCP=n

and this ist the nrf Connect log after changing and rebuilding.

***** Booting Zephyr OS v1.14.99-ncs2 *****
Flash region		Domain		Permissions
00 0x00000 0x08000 	Secure		rwxl
01 0x08000 0x10000 	Non-Secure	rwxl
02 0x10000 0x18000 	Non-Secure	rwxl
03 0x18000 0x20000 	Non-Secure	rwxl
04 0x20000 0x28000 	Non-Secure	rwxl
05 0x28000 0x30000 	Non-Secure	rwxl
06 0x30000 0x38000 	Non-Secure	rwxl
07 0x38000 0x40000 	Non-Secure	rwxl
08 0x40000 0x48000 	Non-Secure	rwxl
09 0x48000 0x50000 	Non-Secure	rwxl
10 0x50000 0x58000 	Non-Secure	rwxl
11 0x58000 0x60000 	Non-Secure	rwxl
12 0x60000 0x68000 	Non-Secure	rwxl
13 0x68000 0x70000 	Non-Secure	rwxl
14 0x70000 0x78000 	Non-Secure	rwxl
15 0x78000 0x80000 	Non-Secure	rwxl
16 0x80000 0x88000 	Non-Secure	rwxl
17 0x88000 0x90000 	Non-Secure	rwxl
18 0x90000 0x98000 	Non-Secure	rwxl
19 0x98000 0xa0000 	Non-Secure	rwxl
20 0xa0000 0xa8000 	Non-Secure	rwxl
21 0xa8000 0xb0000 	Non-Secure	rwxl
22 0xb0000 0xb8000 	Non-Secure	rwxl
23 0xb8000 0xc0000 	Non-Secure	rwxl
24 0xc0000 0xc8000 	Non-Secure	rwxl
25 0xc8000 0xd0000 	Non-Secure	rwxl
26 0xd0000 0xd8000 	Non-Secure	rwxl
27 0xd8000 0xe0000 	Non-Secure	rwxl
28 0xe0000 0xe8000 	Non-Secure	rwxl
29 0xe8000 0xf0000 	Non-Secure	rwxl
30 0xf0000 0xf8000 	Non-Secure	rwxl
31 0xf8000 0x100000 	Non-Secure	rwxl
Non-secure callable region 0 placed in flash region 0 with size 32.


SRAM region		Domain		Permissions
00 0x00000 0x02000	Secure		rwxl
01 0x02000 0x04000	Secure		rwxl
02 0x04000 0x06000	Secure		rwxl
03 0x06000 0x08000	Secure		rwxl
04 0x08000 0x0a000	Secure		rwxl
05 0x0a000 0x0c000	Secure		rwxl
06 0x0c000 0x0e000	Secure		rwxl
07 0x0e000 0x10000	Secure		rwxl
08 0x10000 0x12000	Non-Secure	rwxl
09 0x12000 0x14000	Non-Secure	rwxl
10 0x14000 0x16000	Non-Secure	rwxl
11 0x16000 0x18000	Non-Secure	rwxl
12 0x18000 0x1a000	Non-Secure	rwxl
13 0x1a000 0x1c000	Non-Secure	rwxl
14 0x1c000 0x1e000	Non-Secure	rwxl
15 0x1e000 0x20000	Non-Secure	rwxl
16 0x20000 0x22000	Non-Secure	rwxl
17 0x22000 0x24000	Non-Secure	rwxl
18 0x24000 0x26000	Non-Secure	rwxl
19 0x26000 0x28000	Non-Secure	rwxl
20 0x28000 0x2a000	Non-Secure	rwxl
21 0x2a000 0x2c000	Non-Secure	rwxl
22 0x2c000 0x2e000	Non-Secure	rwxl
23 0x2e000 0x30000	Non-Secure	rwxl
24 0x30000 0x32000	Non-Secure	rwxl
25 0x32000 0x34000	Non-Secure	rwxl
26 0x34000 0x36000	Non-Secure	rwxl
27 0x36000 0x38000	Non-Secure	rwxl
28 0x38000 0x3a000	Non-Secure	rwxl
29 0x3a000 0x3c000	Non-Secure	rwxl
30 0x3c000 0x3e000	Non-Secure	rwxl
31 0x3e000 0x40000	Non-Secure	rwxl

Peripheral		Domain		Status
00 NRF_P0		Non-Secure	OK
01 NRF_CLOCK		Non-Secure	OK
02 NRF_RTC1		Non-Secure	OK
03 NRF_NVMC		Non-Secure	OK
04 NRF_UARTE1		Non-Secure	OK
05 NRF_UARTE2		Secure		SKIP
06 NRF_TWIM2		Non-Secure	OK
07 NRF_SPIM3		Non-Secure	OK
08 NRF_TIMER0		Non-Secure	OK
09 NRF_TIMER1		Non-Secure	OK
10 NRF_TIMER2		Non-Secure	OK
11 NRF_SAADC		Non-Secure	OK
12 NRF_PWM0		Non-Secure	OK
13 NRF_PWM1		Non-Secure	OK
14 NRF_PWM2		Non-Secure	OK
15 NRF_PWM3		Non-Secure	OK
16 NRF_IPC		Non-Secure	OK
17 NRF_VMC		Non-Secure	OK
18 NRF_FPU		Non-Secure	OK
19 NRF_EGU1		Non-Secure	OK
20 NRF_EGU2		Non-Secure	OK
21 NRF_GPIOTE1		Non-Secure	OK

SPM: NS image at 0xc000
SPM: NS MSP at 0x2002ad60
SPM: NS reset vector at 0x13db5
SPM: prepare to jump to Non-Secure image.
***** Booting Zephyr OS v1.14.99-ncs2 *****
Application started
LTE LC config ...
AT+CFUN?
+CFUN: 1
OK
AT+CGSN=1
+CGSN: "352656100218752"
OK
AT+CGMI
Nordic Semiconductor ASA
OK
AT+CGMM
nRF9160-SICA
OK
AT+CGMR
mfw_nrf9160_1.0.0
OK
AT+CEMODE?
+CEMODE: 0
OK
AT%XCBAND=?
%XCBAND: (1,2,3,4,5,8,12,13,17,19,20,25,26,28,66)
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=2
OK
AT+CEREG?
+CEREG: 2,4,"FFFE","FFFFFFFF",9
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
204080813519271
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT+CESQ
+CESQ: 99,99,255,255,255,255
OK
AT+CESQ
+CESQ: 99,99,255,255,255,50
OK
AT+CEREG?
+CEREG: 2,4,"7615","019334DF",9
OK
AT+CEREG?
+CEREG: 2,4,"3AD4","0119F467",9
OK

Best regards,

schnuckelg

[AndreasF]

Hi.

I see that you say that you're using the asset_tracker demo.

Can you instead try with AT_client?

Try to do the same steps as before, plus one extra step:

CONFIG_LTE_LEGACY_PCO_MODE=y
CONFIG_LTE_NETWORK_MODE_NBIOT=y
remove CONFIG_NEWLIB_LIBC=y 

And run the AT commands:

at%ysystemmode=0,1,0,0

AT%XEPCO=0

Does this work?

Best regards,

Andreas