Serious issue with esp8266

Projects Programming
1

esp8266 not stable each few seconds or few minutes restart

I am using websocket server & software serial

I put in each loop

ESP.wdtFeed();

stack>>>
ctx: sys
sp: 3fffea00 end: 3fffffb0 offset: 01a0
3fffeba0: 4020d67d 00000001 3fffec30 4020d672
3fffebb0: 00000001 00001206 3fff190c 40203807
3fffebc0: 00000002 00000000 3fff190c 40203891
3fffebd0: 5f053132 706f6172 63745f04 00000000
3fffebe0: 3ffeece4 00000002 3fffec30 40208b0a
3fffebf0: 00001c77 00000000 00000000 00000000
3fffec00: 00000000 00000000 00000000 00000002
3fffec10: 3ffeece4 00000000 00000000 40208e1e
3fffec20: 00000001 00000000 00000000 00000000
3fffec30: 0000008a 00000000 00000000 00000000
3fffec40: 00000000 00000000 00000000 00000000
3fffec50: 00000000 00000000 3ffeecb4 0000000a
3fffec60: 00000001 00040000 00000000 00040000
3fffec70: 3ffeecb4 00000006 3ffeece4 00000001
3fffec80: 3ffeecb4 00000000 3ffeece4 40208fb2
3fffec90: 00000000 00000000 00000020 401011b3
3fffeca0: 0000010d 2c9f0300 4000050c 00000000
3fffecb0: 3ffeed4d 3ffeecb4 3ffeece4 40209498
3fffecc0: 00000000 00000000 4bc6a7f0 00000000
3fffecd0: 00000025 00000000 40100834 00001c77
3fffece0: 00000000 00000004 00000004 3ffeed51
3fffecf0: 00000000 3ffeece4 3fffed50 402094e9
3fffed00: b428e765 00000001 3ffef23c 4010013f
3fffed10: 00000004 3ffeece4 3fffed50 40209268
3fffed20: 00001c77 00000004 00000000 40100a1d
3fffed30: 80033001 00000001 0000000c 00000000
3fffed40: 3ffeecb4 00000006 3ffeece4 402092ef
3fffed50: 3fff1564 40100960 40208b44 402094d0
3fffed60: 3ffeed4d 00000004 00000010 ffffffff
3fffed70: 4021e6fe 00001040 00188000 3ffeed4d
3fffed80: 3ffeed4d 3ffeecb4 3ffeece4 40209426
3fffed90: 00000000 00000000 4bc6a7f0 00000000
3fffeda0: 3fff184c 00000000 40100834 00001c77
3fffedb0: 00000000 00000002 00000002 3ffeed4d
3fffedc0: 00000000 3ffeece4 3fffee20 402094e9
3fffedd0: 3ffef88c 3fff184c 3ffef8a8 4010013f
3fffede0: 00000002 3ffeece4 3fffee20 40209268
3fffedf0: 00001c77 00000002 3ffef23c 401004ae
3fffee00: b423498b 00000000 0000000c 00000000
3fffee10: 3ffeecb4 00000002 3ffeece4 402092ef
3fffee20: 3fff1974 0000000e 40208b44 402094d0
3fffee30: 3ffeed4b 00000002 4000050c 00000022
3fffee40: 3fff0000 40100960 3fffc258 000000cc
3fffee50: 3ffef0e0 3ffeecb4 3ffeece4 402094a9
3fffee60: 40000f49 3fffefa0 b4234814 3ffef8a8
3fffee70: 3ffefa58 3ffefb08 3fff19b4 3ffef8a8
3fffee80: 00000000 4bc6a7f0 010624dd 000000cc
3fffee90: 3ffef0e0 3ffeecb4 3ffeece4 402094c9
3fffeea0: 00000000 3ffeecb4 3ffeece4 4020a3b1
3fffeeb0: 00000000 00000000 00000000 4020d009
3fffeec0: 0020e999 3fff19d2 00000000 60000600
3fffeed0: 006f30c3 3ffee3d0 3ffeecb4 4020a4b5
3fffeee0: 006f30c3 3ffee3d0 3ffeecb4 4020a4e1
3fffeef0: 40105755 3ffee3d0 3ffeeba4 402012d2
3fffef00: 40105802 3ffe8ed4 0022a86e 4020ee96
3fffef10: 4023f440 3ffeeba4 3ffee3d0 4020f50e
3fffef20: 60000600 3ffeeba4 3fff1534 4023f44d
3fffef30: 4023f492 3fffdab0 00000000 3fffdcb0
3fffef40: 3ffee3e0 00000000 3fff1534 4023f093
3fffef50: 40000f49 3fffdab0 3fffdab0 40000f49
3fffef60: 40000e19 00000005 000571f0 00000000
3fffef70: 3ffeec94 aa55aa55 000000ed 401050f5
3fffef80: 401050fb 000571f0 00000000 ba9760cc
3fffef90: 4010000d 9a068ce2 45c3fc6b b3dd25bf
3fffefa0: 4023672c 3fffef3c 402366e5 3ffffeb8
3fffefb0: 3fffffc0 00000000 00000000 feefeffe
3fffefc0: feefeffe feefeffe feefeffe feefeffe
3fffefd0: feefeffe feefeffe feefeffe feefeffe
3fffefe0: feefeffe feefeffe feefeffe feefeffe
3fffeff0: feefeffe feefeffe feefeffe feefeffe
3ffff000: feefeffe feefeffe feefeffe feefeffe
3ffff010: feefeffe feefeffe feefeffe feefeffe
3ffff020: feefeffe feefeffe feefeffe feefeffe
3ffff030: feefeffe feefeffe feefeffe feefeffe
3ffff040: feefeffe feefeffe feefeffe feefeffe
3ffff050: feefeffe feefeffe feefeffe feefeffe
3ffff060: feefeffe feefeffe feefeffe feefeffe
3ffff070: feefeffe feefeffe feefeffe feefeffe
3ffff080: feefeffe feefeffe feefeffe feefeffe
3ffff090: feefeffe feefeffe feefeffe feefeffe
3ffff0a0: feefeffe feefeffe feefeffe feefeffe
3ffff0b0: feefeffe feefeffe feefeffe feefeffe
3ffff0c0: feefeffe feefeffe feefeffe feefeffe
3ffff0d0: feefeffe feefeffe feefeffe feefeffe
3ffff0e0: feefeffe feefeffe feefeffe feefeffe
3ffff0f0: feefeffe feefeffe feefeffe feefeffe
3ffff100: feefeffe feefeffe feefeffe feefeffe
3ffff110: feefeffe feefeffe feefeffe feefeffe
3ffff120: feefeffe feefeffe feefeffe feefeffe
3ffff130: feefeffe feefeffe feefeffe feefeffe
3ffff140: feefeffe feefeffe feefeffe feefeffe
3ffff150: feefeffe feefeffe feefeffe feefeffe
3ffff160: feefeffe feefeffe feefeffe feefeffe
3ffff170: feefeffe feefeffe feefeffe feefeffe
3ffff180: feefeffe feefeffe feefeffe feefeffe
3ffff190: feefeffe feefeffe feefeffe feefeffe
3ffff1a0: feefeffe feefeffe feefeffe feefeffe
3ffff1b0: feefeffe feefeffe feefeffe feefeffe
3ffff1c0: feefeffe feefeffe feefeffe feefeffe
3ffff1d0: feefeffe feefeffe feefeffe feefeffe
3ffff1e0: feefeffe feefeffe feefeffe feefeffe
3ffff1f0: feefeffe feefeffe feefeffe feefeffe
3ffff200: feefeffe feefeffe feefeffe feefeffe
3ffff210: feefeffe feefeffe feefeffe feefeffe
3ffff220: feefeffe feefeffe feefeffe feefeffe
3ffff230: feefeffe feefeffe feefeffe feefeffe
3ffff240: feefeffe feefeffe feefeffe feefeffe
3ffff250: feefeffe feefeffe feefeffe feefeffe
3ffff260: feefeffe feefeffe feefeffe feefeffe
3ffff270: feefeffe feefeffe feefeffe feefeffe
3ffff280: feefeffe feefeffe feefeffe feefeffe
3ffff290: feefeffe feefeffe feefeffe feefeffe
3ffff2a0: feefeffe feefeffe feefeffe feefeffe
3ffff2b0: feefeffe feefeffe feefeffe feefeffe
3ffff2c0: feefeffe feefeffe feefeffe feefeffe
3ffff2d0: feefeffe feefeffe feefeffe feefeffe
3ffff2e0: feefeffe feefeffe feefeffe feefeffe
3ffff2f0: feefeffe feefeffe feefeffe feefeffe
3ffff300: feefeffe feefeffe feefeffe feefeffe
3ffff310: feefeffe feefeffe feefeffe feefeffe
3ffff320: feefeffe feefeffe feefeffe feefeffe
3ffff330: feefeffe feefeffe feefeffe feefeffe
3ffff340: feefeffe feefeffe feefeffe feefeffe
3ffff350: feefeffe feefeffe feefeffe feefeffe
3ffff360: feefeffe feefeffe feefeffe feefeffe
3ffff370: feefeffe feefeffe feefeffe feefeffe
3ffff380: feefeffe feefeffe feefeffe feefeffe
3ffff390: feefeffe feefeffe feefeffe feefeffe
3ffff3a0: feefeffe feefeffe feefeffe feefeffe
3ffff3b0: feefeffe feefeffe feefeffe feefeffe
3ffff3c0: feefeffe feefeffe feefeffe feefeffe
3ffff3d0: feefeffe feefeffe feefeffe feefeffe
3ffff3e0: feefeffe feefeffe feefeffe feefeffe
3ffff3f0: feefeffe feefeffe feefeffe feefeffe
3ffff400: feefeffe feefeffe feefeffe feefeffe
3ffff410: feefeffe feefeffe feefeffe feefeffe
3ffff420: feefeffe feefeffe feefeffe feefeffe
3ffff430: feefeffe feefeffe feefeffe feefeffe
3ffff440: feefeffe feefeffe feefeffe feefeffe
3ffff450: feefeffe feefeffe feefeffe feefeffe
3ffff460: feefeffe feefeffe feefeffe feefeffe
3ffff470: feefeffe feefeffe feefeffe feefeffe
3ffff480: feefeffe feefeffe feefeffe feefeffe
3ffff490: feefeffe feefeffe feefeffe feefeffe
3ffff4a0: feefeffe feefeffe feefeffe feefeffe
3ffff4b0: feefeffe feefeffe feefeffe feefeffe
3ffff4c0: feefeffe feefeffe feefeffe feefeffe
3ffff4d0: feefeffe feefeffe feefeffe feefeffe
3ffff4e0: feefeffe feefeffe feefeffe feefeffe
3ffff4f0: feefeffe feefeffe feefeffe feefeffe
3ffff500: feefeffe feefeffe feefeffe feefeffe
3ffff510: feefeffe feefeffe feefeffe feefeffe
3ffff520: feefeffe feefeffe feefeffe feefeffe
3ffff530: feefeffe feefeffe feefeffe feefeffe
3ffff540: feefeffe feefeffe feefeffe feefeffe
3ffff550: feefeffe feefeffe feefeffe feefeffe
3ffff560: feefeffe feefeffe feefeffe feefeffe
3ffff570: feefeffe feefeffe feefeffe feefeffe
3ffff580: feefeffe feefeffe feefeffe feefeffe
3ffff590: feefeffe feefeffe feefeffe feefeffe
3ffff5a0: feefeffe feefeffe feefeffe feefeffe
3ffff5b0: feefeffe feefeffe feefeffe feefeffe
3ffff5c0: feefeffe feefeffe feefeffe feefeffe
3ffff5d0: feefeffe feefeffe feefeffe feefeffe
3ffff5e0: feefeffe feefeffe feefeffe feefeffe
3ffff5f0: feefeffe feefeffe feefeffe feefeffe
3ffff600: feefeffe feefeffe feefeffe feefeffe
3ffff610: feefeffe feefeffe feefeffe feefeffe
3ffff620: feefeffe feefeffe feefeffe feefeffe
3ffff630: feefeffe feefeffe feefeffe feefeffe
3ffff640: feefeffe feefeffe feefeffe feefeffe
3ffff650: feefeffe feefeffe feefeffe feefeffe
3ffff660: feefeffe feefeffe feefeffe feefeffe
3ffff670: feefeffe feefeffe feefeffe feefeffe
3ffff680: feefeffe feefeffe feefeffe feefeffe
3ffff690: feefeffe feefeffe feefeffe feefeffe
3ffff6a0: feefeffe feefeffe feefeffe feefeffe
3ffff6b0: feefeffe feefeffe feefeffe feefeffe
3ffff6c0: feefeffe feefeffe feefeffe feefeffe
3ffff6d0: feefeffe feefeffe feefeffe feefeffe
3ffff6e0: feefeffe feefeffe feefeffe feefeffe
3ffff6f0: feefeffe 00000000 feefeffe 000000ff
3ffff700: 000000d0 00000001 40104f3d 3ffed288
3ffff710: 3ffed210 00000001 40104f3d 3ffed288
3ffff720: 3ffed210 feefeffe feefeffe feefeffe
3ffff730: 40104b22 3ffed288 feefeffe feefeffe
3ffff740: af47d8c5 40104471 3ffed288 401004ae
3ffff750: af47d8c4 40104471 3ffed288 401004ae
3ffff760: 40104a25 3ffed288 3ffec808 00040000
3ffff770: 50562200 3ffed288 3ffec858 00040000
3ffff780: 40104cfd 00080000 00000002 00000022
3ffff790: 40102fca 40100960 3fffc258 4000050c
3ffff7a0: 40227a00 00000000 00000010 ffffffff
3ffff7b0: 4022b539 2c9f0300 4000050c 3fffc278
3ffff7c0: 40102c9c 3fffc200 00000022 00000002
3ffff7d0: 40100718 00000030 0000001b ffffffff
3ffff7e0: 40237a9e 00000020 3ffef49e 3ffef49e
3ffff7f0: 3ffe8004 ffffffc3 00000000 00000005
3ffff800: 3ffec878 3ffe8ff4 000000a0 3ffec858
3ffff810: 3ffefd84 00000001 00000020 00000030
3ffff820: 000000d0 00000001 40104f3d 3ffed288
3ffff830: 3ffed210 feefeffe feefeffe feefeffe
3ffff840: feefeffe feefeffe feefeffe feefeffe
3ffff850: 40104b22 3ffed288 feefeffe feefeffe
3ffff860: feefeffe 40104471 3ffed288 feefeffe
3ffff870: feefeffe feefeffe 4023899f 00000001
3ffff880: ffffffff 00000000 3ffe9211 00000008
3ffff890: 402389ee 3ffec858 3ffefd84 00000001
3ffff8a0: 00000002 00000000 00000020 4010073c
3ffff8b0: 00000005 00000005 00000002 40101d44
3ffff8c0: 3ffe90c2 40237aab 3ffec858 00000020
3ffff8d0: 00000000 4022b047 3ffedce8 3ffefd84
3ffff8e0: 00000000 00000002 00000000 3ffec858
3ffff8f0: 3fff2f42 4010563f 3fff1654 3ffef664
3ffff900: 3fff014c 0000ed39 ffffffff 000012c6
3ffff910: 00000200 4021bc95 3fff1654 3ffef664
3ffff920: af561605 00000001 3ffef23c 401004ae
3ffff930: af561604 3fff2cc8 3fff2c84 00000000
3ffff940: 3ffefa90 3ffefa58 3fff2f0c 4021bf1e
3ffff950: 80033001 3ffefa58 3fff2f0c 4021c33c
3ffff960: 3ffef8e0 00000000 00000000 00000022
3ffff970: 3fffc200 40100960 3fffc258 3ffef8e4
3ffff980: 3ffefa90 00000000 3ffefa58 40223b20
3ffff990: 402214de 3fff1850 0000ffff 00000010
3ffff9a0: 00000000 3fff2f0c 00000000 00000024
3ffff9b0: 00000240 00000208 00000010 3fff2f0c
3ffff9c0: 3fff2f0c 3fff1850 3ffefa58 40223d74
3ffff9d0: 00000000 40103ee4 00040000 feefeffe
3ffff9e0: 3fff2f50 3fff1850 3ffefa58 40225674
3ffff9f0: 3fff184c 00000000 00000020 401011e8
3ffffa00: 00000014 3fff184c 000000ff 00000000
3ffffa10: 00000006 3ffef9d4 00000000 4022616c
3ffffa20: 40208ae9 00000030 00000010 3fff184c
3ffffa30: 3fff199c 3ffefa58 3fff1944 402256bc
3ffffa40: 00002b18 00000000 00000000 40220999
3ffffa50: 00000000 00000000 0000001f 4010073c
3ffffa60: 00000034 402072b0 3fffc228 40105895
3ffffa70: 4000050c 3ffef2b8 00000002 40207c34
3ffffa80: 4021619c 00000030 00000018 ffffffff
3ffffa90: 4021214c 40216110 3ffffe50 3ffe871e
3ffffaa0: 3ffffee0 3ffffed0 00000008 00000039
3ffffab0: 000002d0 3fffff04 000000ff 3ffffe50
3ffffac0: 3ffef17c 3ffe8324 3fffff60 00000030
3ffffad0: 00000000 00000000 00000000 00000000
3ffffae0: 00000000 00000000 00000000 00000000
3ffffaf0: 00000000 4024e38d 3ffe8324 0fffffff
3ffffb00: 3ffffb9d 00000000 00000000 00000000
3ffffb10: 00000000 00000000 00000000 3ffffb80
3ffffb20: 3ffffb9e 00000000 3ffffe10 40216835
3ffffb30: 3ffe8e3e 3ffe8e41 3ffe8e44 00000000
3ffffb40: 3ffffb9c fffffea3 3ffe8324 40213348
3ffffb50: 00000030 3ffffe50 00000000 00000001
3ffffb60: 3fff16c4 3ffef2b8 00000001 3ffe831c
3ffffb70: 3ffe8324 3ffe8723 3ffffe50 40216508
3ffffb80: 00000600 00000010 0000015c 00000002
3ffffb90: 00000005 3ffffd04 00000004 40003961
3ffffba0: 00000000 00000000 3fffff00 402080c1
3ffffbb0: 00000000 00000000 00000000 00000000
3ffffbc0: 00000000 00000000 00000000 00000000
3ffffbd0: 00000000 00000000 00000000 00000000
3ffffbe0: 00000000 00000000 00000000 00000000
3ffffbf0: 00003618 00000000 00000000 00000000
3ffffc00: 00000000 00000000 00000000 3ffffcc0
3ffffc10: 000000dc 0000005a 00000020 401011e8
3ffffc20: 00000000 00000000 00000000 00000000
3ffffc30: 00000000 00000000 00000080 4022616c
3ffffc40: 00000001 00000000 00000000 4021fc40
3ffffc50: 00000000 00000000 4023899f 00000001
3ffffc60: ffffffff 00000000 3ffe9211 00000008
3ffffc70: 402389ee 3ffec830 3ffefd84 00000001
3ffffc80: 40238afa 3ffec830 3ffefd84 3ffec830
3ffffc90: 00000005 00000005 00000008 3fff337c
3ffffca0: 3ffe90c2 40237aab 3ffec830 00000020
3ffffcb0: 00000000 4022b047 3ffedce8 3ffefd84
3ffffcc0: 00000000 00000002 00000001 3ffec830
3ffffcd0: 000005e0 00000000 40103df5 3ffed240
3ffffce0: 0000003c 00000000 00000000 000000ff
3ffffcf0: 00000005 00000000 00000020 4010073c
3ffffd00: 00000002 00000000 00000005 40101d44
3ffffd10: 00000005 00000000 00000020 4010073c
3ffffd20: b3f47fb3 00000001 00000005 40101d44
3ffffd30: 3ffe90c5 40104fef 3ffecb28 401004ae
3ffffd40: 401028db 3ffecb28 00000000 40100a1d
3ffffd50: 00007fff 006f2d9f 3ffed598 40102ab8
3ffffd60: 3ffe9958 00000000 00000000 401004ae
3ffffd70: 00007fff 006f2d9f 40102f7a 00000100
3ffffd80: 3ffe9958 7fffffff 00002200 00000001
3ffffd90: 00000001 00004a88 00000010 ffffffff
3ffffda0: 3ffe9958 007a1200 b427dbe3 006f2d9f
3ffffdb0: 3ffe9964 2c9f0300 4000050c 3fffc278
3ffffdc0: 40102c9c 3fffc200 00000022 00000000
3ffffdd0: 402032f8 00000030 00000010 ffffffff
3ffffde0: 402032dc 00000004 fffffffd 4020f42c
3ffffdf0: 00000000 00000000 00000000 fffffffe
3ffffe00: ffffffff 3fffc6fc 00000001 00000000
3ffffe10: 3ffeecb4 3fff11e4 000000cc 00000030
3ffffe20: 40002ef4 00000030 00000010 ffffffff
3ffffe30: 40002ef1 b4268dad 00000013 00000cdc
3ffffe40: 3ffe8ed0 00000000 00000000 fffffffe
3ffffe50: ffffffff 3fffc6fc 00000001 00000fa0
3ffffe60: b42680d1 3fffff50 3fffff60 00000030
3ffffe70: 00000000 4bc6a7f0 6083126e 00000000
3ffffe80: 00000000 00000000 4bc6a7f0 00000000
3ffffe90: 007a1200 b4282b3e 40100834 00001c76
3ffffea0: 00000000 00000001 0000000c 401001fd
3ffffeb0: 00000000 00000000 00000000 3ffeecb4
3ffffec0: 3ffef0e0 000000cc 4020d014 3fffefa0
3ffffed0: 3ffef0e0 3ffeecb4 3ffeece4 4020d672
3ffffee0: 00000000 3ffeecb4 3ffeedb0 4020a3dc
3ffffef0: 3fffff50 3ffef119 00000000 4020d020
3fffff00: 3fffff50 3ffef119 00000000 3fffff60
3fffff10: 3fffff50 3ffef119 3ffeecb4 4020a4b5
3fffff20: 3fffff50 3ffef119 3ffeecb4 4020a4e1
3fffff30: 3fffff50 3ffef119 00000094 4020179c
3fffff40: 3ffeec40 3ffef17c 3ffef23c 40201b70
3fffff50: 47495051 3ffe0053 3ffe8c2e 402096d1
3fffff60: 3ffeec40 00000003 3ffef364 4020b860
3fffff70: 3ffeec40 00001c26 3ffef364 3ffef29c
3fffff80: 3ffeec40 00001c26 3ffef364 40201dc2
3fffff90: 3fffdad0 00000000 3ffef470 3ffef4b0
3fffffa0: 3fffdad0 00000000 3ffef470 4020d138
<<<stack<<<

ets Jan 8 2013,rst cause:1, boot mode:(3,4)

load 0x4010f000, len 3584, room 16
tail 0
chksum 0xb0
csum 0xb0
v2843a5ac
~ld

2

what else is in the code ?

3

code is reading serial data using Software serial library then send data via websocket

4

so how long does one loop lasts before you come back to pat the dog?
do you have blocking parts that can take a long time?

5

can you tell me how to measure time of code block?

6

if you suspect it can take a long time - read millis before, read millis after, calculate the difference

7

wdt after how many seconds will do reset?

8

see Watch Dog Timer (WDT) for ESP8266 | Big Dan the Blogging Man.

Hardware and Software Timers

There is a hardware WDT and a software WDT. The HW WDT is always running and will reset the MCU after about 6 seconds if the HW WDT timer is not reset.

The SW WDT seems to reset the MCU at 1.5 about seconds. You can enable/disable the SW WDT, but not the HW WDT. There seems to be little point in disabling the SW WDT as you must reset it to also reset the HW WDT.

9

by the way, I am thinking about causing reset because mobile app send request to get data via websocket at the same time while esp8266 send uart command or get uart data, what do you think?
note: I am using Software Serial library

10

We would need to see the code

11

in the code I checked used
delayMicroseconds(50);
inside for loop to create 20ms delay

so, I read someone said delayMicroseconds will not feed wdt
so now I used delay(1); then testing

12

I measured sending uart data is takes 36ms the getting uart data it takes 410ms
note: I am using Software Serial library

13

sorry, without the code, the description of the circuit and your test conditions, it's hard to say what's going on

explore this may be

14

I think because I am using Software Serial Library so transmit and receive data not at the same time then will be much slower and take some recourses of esp then I will try to use hardware UART

15

it probably depends on how you coded that - but yes, if you can use hardware serial it's better (or get an ESP32 with more hardware serials and 2 cores)

16

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