Frequent core dump

[michaelfung]

Boot Log:

esp_main.c:172 openhab_sonoff_basic 1.1_20200227r3 (20200227-120849/t1-7-ge0cea59-master-dirty)
esp_main.c:174 Mongoose OS 2.17.0 (20200227-120849/2.17.0-gc31a745)
esp_main.c:178 CPU: ESP8266EX, 160 MHz, RAM: 52248 total, 47504 free
esp_main.c:180 SDK 2.2.1(1247cc5); flash: 1M
esp_exc.c:211 Reset cause: 4 (soft reset)
mg_lwip_ev_mgr.c:77 Mongoose 6.16, LwIP 1.4.1
mg_ssl_if_mbedtls.c:57 mbed TLS 2.16.3-cesanta9
mgos_vfs_dev.c:73 sfl0: sysflash (), size 1048576
mgos_vfs_dev.c:73 root: part ({"dev": "sfl0", "offset": 897024, "size": 131072}), size 131072
mgos_vfs.c:174 /: SPIFFS @ root, opts {"bs":4096,"ps":256,"es":4096}
mgos_vfs.c:347 /: size 113201, used: 107930, free: 5271
mgos_sys_config.c:232 Loading conf9.json
mgos_sys_config.c:316 Sending logs to UDP 192.168.0.1:514
esp_debug.c:56 UDP log set up to 192.168.0.1:514
mgos_sys_config.c:366 MAC: 5e:cf:7f:a7:f6:3d
mgos_sys_config.c:374 WDT: 30 seconds
bcn 0
del if1
del if0
usl
mode : null
mgos_wifi.c:88 WiFi STA: Using config 0 (MYSSID)
mgos_wifi.c:468 WiFi mode: STA
esp_wifi.c:108 WiFi mode: STA
mode : sta(5c:cf:7f:a7:f6:3d)
add if0
sleep disable
mgos_wifi.c:270 WiFi STA: Connecting to MYSSID
mgos_http_server.c:343 HTTP server started on [80]
mgos_rpc_channel_ua:313 0x3fff174c UART0
mgos_init.c:36 Init done, RAM: 52248 total, 42856 free, 42864 min free

Log around crash:

init.js:228 Published:OK topic:sonoff_basic/a7f63d/state msg:{"cdt":"OFF","sch_enable":"ON","skip_once":"OFF","oncount":0,"relay_state":"OFF","mem
ory":29368,"uptime":15002.169043}
init.js:228 Published:OK topic:sonoff_basic/a7f63d/state msg:{"cdt":"OFF","sch_enable":"ON","skip_once":"OFF","oncount":0,"relay_state":"OFF","mem
ory":29368,"uptime":15302.169134}
init.js:228 Published:OK topic:sonoff_basic/a7f63d/state msg:{"cdt":"OFF","sch_enable":"ON","skip_once":"OFF","oncount":0,"relay_state":"OFF","mem
ory":29368,"uptime":15602.169967}
init.js:119 Countdown timer disabled
init.js:228 Published:OK topic:sonoff_basic/a7f63d/state msg:{"cdt":"OFF","sch_enable":"ON","skip_once":"OFF","oncount":0,"relay_state":"ON","memo
ry":29008,"uptime":15736.752359}
init.js:119 Countdown timer disabled
init.js:228 Published:OK topic:sonoff_basic/a7f63d/state msg:{"cdt":"OFF","sch_enable":"ON","skip_once":"OFF","oncount":4,"relay_state":"OFF","mem
ory":29000,"uptime":15741.059476}
mac 684

HW WDT @ 0x40102880
A0: 0x40102880 A1: 0x3ffffd10 A2: 0x00000008 A3: 0x00000000
A4: 0x00000000 A5: 0x60000000 A6: 0x00000003 A7: 0x3ffffc43
A8: 0x00000000 A9: 0x00000000 A10: 0x00000000 A11: 0x00000000
A12: 0x00000048 A13: 0x7fffffff A14: 0x00000002 A15: 0x00000148

(exc SP: 0x3ffffb50)

--- BEGIN CORE DUMP ---
{"app": "openhab_sonoff_basic", "arch": "esp8266", "version": "1.1_20200227r3", "build_id": "20200227-120849/t1-7-ge0cea59-master-dirty", "build_image": "dock
er.io/mgos/esp8266-build:2.2.1-1.5.0-r5",
"REGS": {"addr": 1073740672, "data": "
gCgQQBD9/z8IAAAAAAAAAAAAAAAAAABgAwAAAEP8/z8AAAAAAAAAAAAAAAAAAAAASAAAAP///38CAAAASAEAAIAoEEAEAAAAAAAAAAAAAAAAAAAAMAAAAA==", "crc32": 1360293999},
"DRAM": {"addr": 1073643520, "data": "
voEhQAAAAAAQgP4/AAAAAAIAAAD8gv4/ZIP+P8yD/j8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACK2iBAAQAAADDNIUBkEP8/AAAAANx3/z+8D/8/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAJ+hlrfX/wMiDjPNqzQSbebs3gUACwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AA