Hello,
I'm using the SLM application with an NRF9160. I'm sending AT commands for MQTT publish. After ~10hours the device reboots.
(22:56:29.123) AT%XTEMP? (22:56:29.123) AT#XMQTTPUB="sensor/255/battery/V","11.59",0,0 (22:56:29.162) CPU Temperature: 28 deg (22:56:29.162) AT#XMQTTPUB="sensor/255/cpu_temp/C","28",0,0 (22:56:30.130) SLM: [11:00:38.999,267] <ESC>[0m<dbg> slm_at_host: cmd_send: RX (22:56:30.130) SLM: 41 54 25 58 54 45 4d 50 3f |AT%XTEMP ? <ESC>[0m (22:56:30.156) SLM: [11:00:39.008,331] <ESC>[0m<dbg> slm_at_host: slm_at_send_indicate: TX (22:56:30.176) SLM: 0d 0a 25 58 54 45 4d 50 3a 20 32 38 0d 0a 0d 0a |..%XTEMP : 28.... (22:56:30.176) SLM: 4f 4b 0d 0a |OK.. <ESC>[0m (22:56:30.194) SLM: [11:00:39.008,392] <ESC>[0m<dbg> slm_at_host: cmd_send: RX (22:56:30.194) SLM: 41 54 23 58 4d 51 54 54 0 42 3d 22 73 65 6e |AT#XMQTT PUB="sen (22:56:30.213) SLM: 73 6f 72 2f 32 35 35 2f 61 74 74 65 72 79 2f |sor/255/ battery/ (22:56:30.213) SLM: 56 22 2c 22 31 31 2e 35 22 2c 30 2c 30 |V","11.5 9",0,0 <ESC>[0m (22:56:30.213) SLM: [11:00:39.015,869] <ESC>[0m<dbg> slm_at_host: slm_at_send_indicate:X (22:56:30.213) SLM: 0d 0a 4f 4b 0d 0a |..OK.. <ESC>[0m (22:56:30.237) SLM: [11:00:39.016,815] <ESC>[0m<dbg> slm_at_host: cmd_send: RX (22:56:30.237) SLM: 41 54 23 58 4d 51 54 54 50 42 3d 22 73 65 6e |AT#XMQTT PUB="sen (22:56:30.268) SLM: 73 6f 72 2f 32 35 35 2f 70 75 5f 74 65 6d 70 |sor/255/ cpu_temp (22:56:30.268) SLM: 2f 43 22 2c 22 32 38 22 30 2c 30 |/C","28" ,0,0 <ESC>[0m (22:56:30.268) SLM: [11:00:39.017,639] <ESC>[0m<dbg> slm_at_host: slm_at_send_indicate:X (22:56:30.268) SLM: 0d 0a 4f 4b 0d 0a |..OK.. <ESC>[0m (22:56:35.795) SLM: *** Booting nRF Connect SDK v2.8.0-a2386bfc8401 *** (22:56:35.831) SLM: *** Using Zephyr OS v3.7.99-0bc3393fb112 *** (22:56:35.831) SLM: [00:00:00.252,044] <ESC>[0m<inf> at_cmd_custom: Custom AT commands enabled with 70 entries.<ESC>[0m (22:56:35.831) SLM: [00:00:00.252,075] <ESC>[0m<dbg> slm: main: RR: 0x00000000<ESC>[0m (22:56:35.831) SLM: [00:00:00.257,873] <ESC>[0m<inf> fs_nvs: 2 Sectors of 4096 bytes<ESC>[0m (22:56:35.831) SLM: [00:00:00.257,873] <ESC>[0m<inf> fs_nvs: alloc wra: 0, fe8<ESC>[0m (22:56:35.854) SLM: [00:00:00.257,873] <ESC>[0m<inf> fs_nvs: data wra: 0, 0<ESC>[0m (22:56:36.227) SLM: Ready (22:56:36.227) SLM: [00:00:00.491,821] <ESC>[0m<inf> slm: lib_modem init: 0<ESC>[0m (22:56:36.249) SLM: [00:00:00.491,912] <ESC>[0m<inf> mcuboot_util: Image index: 0, Swap type: none<ESC>[0m (22:56:36.249) SLM: [00:00:00.491,912] <ESC>[0m<inf> slm: Serial LTE Modem<ESC>[0m (22:56:36.275) SLM: [00:00:00.585,327] <ESC>[0m<inf> nrf_cloud_info: Device ID: 504d5632-3736-4649-808b-2321133ae3a6<ESC>[0m (22:56:36.275) SLM: [00:00:00.590,576] <ESC>[0m<inf> nrf_cloud_info: IMEI: 350457793853522<ESC>[0m (22:56:36.275) SLM: [00:00:00.682,861] <ESC>[0m<inf> nrf_cloud_info: UUID: 504d5632-3736-4649-808b-2321133ae3a6<ESC>[0m (22:56:36.275) SLM: [00:00:00.688,598] <ESC>[0m<inf> nrf_cloud_info: Modem FW: mfw_nrf9160_1.3.7<ESC>[0m (22:56:36.307) SLM: [00:00:00.688,629] <ESC>[0m<inf> nrf_cloud_info: Protocol: MQTT<ESC>[0m (22:56:36.307) SLM: [00:00:00.688,659] <ESC>[0m<inf> nrf_cloud_info: Download protocol: HTTPS<ESC>[0m (22:56:36.307) SLM: [00:00:00.688,690] <ESC>[0m<inf> nrf_cloud_info: Sec tag: 16842753<ESC>[0m (22:56:36.307) SLM: [00:00:00.688,720] <ESC>[0m<inf> nrf_cloud_info: Host name: mqtt.nrfcloud.com<ESC>[0m (22:56:36.335) SLM: [00:00:00.688,812] <ESC>[0m<inf> slm_uart_handler: UART baud: 11520 d/p/s-bits: 3/0/1 HWFC: 0<ESC>[0m (22:56:36.335) SLM: [00:00:00.688,964] <ESC>[0m<dbg> slm_at_host: slm_at_send_indicate: (22:56:36.373) SLM: 52 65 61 64 79 0d 0a |Ready.. <ESC>[0m (22:56:36.373) SLM: [00:00:00.688,964] <ESC>[0m<inf> slm_at_host: at_host init done<ESC>[0m[00:00:00.689,025] <ESC>[0m<dbg> slm: configure_power_pin_interrupt: Configured interrupt (0x3400000) on power pin (6).<ESC>[0m (22:56:59.010) AT%XTEMP?
The setup AT commands from powerup are as follows:
(11:55:51.312) SLM: *** Booting nRF Connect SDK v2.8.0-a2386bfc8401 *** (11:55:51.343) SLM: *** Using Zephyr OS v3.7.99-0bc3393fb112 *** (11:55:51.343) SLM: [00:00:00.252,014] <ESC>[0m<inf> at_cmd_custom: Custom AT commands enabled with 70 entries.<ESC>[0m (11:55:51.365) SLM: [00:00:00.252,044] <ESC>[0m<dbg> slm: main: RR: 0x00000000<ESC>[0m (11:55:51.365) SLM: [00:00:00.257,843] <ESC>[0m<inf> fs_nvs: 2 Sectors of 4096 bytes<ESC>[0m (11:55:51.365) SLM: [00:00:00.257,843] <ESC>[0m<inf> fs_nvs: alloc wra: 0, fe8<ESC>[0m (11:55:51.365) SLM: [00:00:00.257,843] <ESC>[0m<inf> fs_nvs: data wra: 0, 0<ESC>[0m (11:55:51.743) SLM: Ready (11:55:51.743) SLM: [00:00:00.491,577] <ESC>[0m<inf> slm: lib_modem init: 0<ESC>[0m (11:55:51.772) SLM: [00:00:00.491,668] <ESC>[0m<inf> mcuboot_util: Image index: 0, Swap type: none<ESC>[0m (11:55:51.772) SLM: [00:00:00.491,668] <ESC>[0m<inf> slm: Serial LTE Modem<ESC>[0m (11:55:51.800) SLM: [00:00:00.585,083] <ESC>[0m<inf> nrf_cloud_info: Device ID: 504d5632-3736-4649-808b-2321133ae3a6<ESC>[0m (11:55:51.800) SLM: [00:00:00.590,332] <ESC>[0m<inf> nrf_cloud_info: IMEI: 350457793853522<ESC>[0m (11:55:51.800) SLM: [00:00:00.682,617] <ESC>[0m<inf> nrf_cloud_info: UUID: 504d5632-3736-4649-808b-2321133ae3a6<ESC>[0m (11:55:51.800) SLM: [00:00:00.688,354] <ESC>[0m<inf> nrf_cloud_info: Modem FW: mfw_nrf9160_1.3.7<ESC>[0m (11:55:51.832) SLM: [00:00:00.688,385] <ESC>[0m<inf> nrf_cloud_info: Protocol: MQTT<ESC>[0m (11:55:51.832) SLM: [00:00:00.688,415] <ESC>[0m<inf> nrf_cloud_info: Download protocol: HTTPS<ESC>[0m (11:55:51.832) SLM: [00:00:00.688,446] <ESC>[0m<inf> nrf_cloud_info: Sec tag: 16842753<ESC>[0m (11:55:51.832) SLM: [00:00:00.688,476] <ESC>[0m<inf> nrf_cloud_info: Host name: mqtt.nrfcloud.com<ESC>[0m (11:55:51.857) SLM: [00:00:00.688,568] <ESC>[0m<inf> slm_uart_handler: UART baud: 115200 d/p/s-bits: 3/0/1 HWFC: 0<ESC>[0m (11:55:51.857) SLM: [00:00:00.688,720] <ESC>[0m<dbg> slm_at_host: slm_at_send_indicate:TX (11:55:51.857) SLM: 52 65 61 64 79 0d 0a |Ready.. <ESC>[0m (11:55:51.857) SLM: [00:00:00.688,720] <ESC>[0m<inf> slm_at_host: at_host init done<ESC>[0m[00:00:00.688,781] <ESC>[0m<dbg> slm: configure_power_pin_interrupt: Configured interrupt (0x3400000) on power pin (6).<ESC>[0m (11:56:00.334) AT%MDMEV=1 (11:56:00.542) AT+CGDCONT=1,"IP","gigsky-02" (11:56:00.734) AT%XSYSTEMMODE=1,1,0,0 (11:56:00.942) AT%XSIM=1 (11:56:01.134) AT+CFUN=1 .(11:56:01.342) AT+CGSN=1 (11:56:01.560) AT+CEMODE? (11:56:01.743) +CGSN: "350457793853 (11:56:01.743) +CEMODE: 2 (11:56:01.743) AT+CMEE=1 (11:56:01.950) AT+CNEC=24 (11:56:02.142) AT+CIND=1,1,1 (11:56:02.351) %XSIM: 1 (11:56:02.351) AT+CEREG=5 (11:56:02.581) AT%CESQ=1 (11:56:02.750) SLM: 0d 0a 4f 4b (11:56:02.750) AT+CSCON=1 (11:56:02.958) AT+COPS=0 (11:56:03.167) %MDMEV: SEARCH STATUS 2 (11:56:03.167) AT+CGEREP=1 (11:56:08.110) %CESQ: 39,1,10,1 (11:56:08.110) +CEREG: 2,"1812","0033751E",7 (11:56:08.110) %CESQ: 35,1,4,0 (11:56:08.398) +CSCON: 1 (11:56:10.382) +CGEV: ME PDN ACT 0,0 (11:56:10.477) +CNEC_ESM: 50,0 (11:56:10.510) +CEREG: 5,"1812","0033751E",7,,,"11100000","11100000"
The application is programmed using the basic SLM code, with a couple of config changes to output the debug to UART and disable the mx25r64 external flash in the overlay (no idea if I needed to, but I just have the NRF chip and an ATMEGA on my PCB). The code is built in VSCode from the example application nrf9160dk_nrf9160_ns - no idea whether the NS version is correct, again I got it to compile so called it good. The "SLM:" prefix in the logs above is to help me see what comes from the NRF and what is printed by the ATMEGA chip.
The application is running from a PSU rather than batteries - I don't think it will be a brown-out, but interested if there's a way to check?
(09:05:49.531) AT%HWVERSION
(09:05:49.738) %HWVERSION: nRF9160 SICA B1A
(09:05:49.738) AT%SHORTSWVER
(09:05:49.947) %SHORTSWVER: nrf9160_1.3.7
I don't have a Segger programmer/RTT, but could maybe justify one if it would help diagnose the issue.
Can you please suggest any likely causes and whether there are any config flags I could set to help diagnose the issue?
Thank you for any assistance.
