Soft WDT reset on interrupts

[CRCinAU]

Basic Infos

• This issue complies with the issue POLICY doc.
• I have read the documentation at readthedocs and the issue is not addressed there.
• I have tested that the issue is present in current master branch (aka latest git).
• I have searched the issue tracker for a similar issue.
• If there is a stack dump, I have decoded it.
• I have filled out all fields below.

Platform

• Hardware: Wemos D1 Mini clone
• Core Version: 2.5.0
• Development Env: Platformio
• Operating System: Fedora 29

Problem Description

When using interrupts to count transitions (CHANGE), I get a stack trace and the program crashes. Have also tried with FALLING, but still same issue. I believe I've marked everything I need.

MCVE Sketch

#include <Arduino.h>
#define PIN_UP_LED D6
#define PIN_DOWN_LED D7

volatile uint8_t downChanges = 0;
volatile long lastDownChange = 0;
volatile uint8_t upChanges = 0;
volatile long lastUpChange = 0;

void ICACHE_RAM_ATTR handleUpInterrupt() {
    if ( millis() > (lastUpChange + 50 ) ) {
        upChanges++;
    }
    lastUpChange = millis();
}
void ICACHE_RAM_ATTR handleDownInterrupt() {
    if ( millis() > (lastDownChange + 50 ) ) {
        downChanges++;
    }
    lastDownChange = millis();
}

void setup() {
    pinMode(PIN_UP_LED, INPUT);
    pinMode(PIN_DOWN_LED, INPUT);
    attachInterrupt(digitalPinToInterrupt(PIN_UP_LED), handleUpInterrupt, CHANGE);
    attachInterrupt(digitalPinToInterrupt(PIN_DOWN_LED), handleDownInterrupt, CHANGE);
}

void loop() {
    Serial.print("upChanges = "); Serial.println(upChanges);
    Serial.print("downChanges = "); Serial.println(downChanges);
    Serial.print("PIN_UP_LED = "); Serial.println(digitalRead(PIN_UP_LED));
    Serial.print("PIN_DOWN_LED = "); Serial.println(digitalRead(PIN_DOWN_LED));
    bool UpLED = digitalRead(PIN_UP_LED);
    bool DownLED = digitalRead(PIN_DOWN_LED);
    delay(1000);
}

Debug Messages

upChanges = 0
downChanges = 1
PIN_UP_LED = 0
PIN_DOWN_LED = 1
upChanges = 0
downChanges = 0
PIN_UP_LED = 0
PIN_DOWN_LED = 1
Soft WDT reset
>>>stack>>>
ctx: sys
sp: 3fffe840 end: 3fffffb0 offset: 01b0
3fffe9f0:  a8754a02 e57f7f14 eb760033 84485d46
3fffea00:  0ac58f04 473df3bd f952d0f4 d97ca509
3fffea10:  216376d3 1ff89eb4 94cb59b3 eeb8787f
3fffea20:  17c747e3 067efc3d 1ac20709 bd075939
3fffea30:  c09b5533 ef5e94fa 01c3d221 f8945262
3fffea40:  cf273551 08b79e6a 45da4530 6cd259d3
3fffea50:  d8aeaf85 0ac58f04 473df3bd 1764eb77
3fffea60:  4000b5f9 00000008 00000038 3fffeb40
3fffea70:  00000008 3fffeb40 6b2c7e7e c0ef43de
3fffea80:  c19fbe5f e0cfdd8f 0cbf8439 1a248ceb
3fffea90:  37158cc6 d11e1e14 8bd5371f 77c2764c
3fffeaa0:  158e4cfb c6f1b776 e7c9a310 a775e4c8
3fffeab0:  477a0211 e5fcafa3 eb760033 84485d46
3fffeac0:  1ac20709 bd075939 067efc3d 201135ec
3fffead0:  5b095531 a2d390d5 2c15c1e2 3070a2b4
3fffeae0:  eeb8787f 94cb59b3 1ff89eb4 3ae22c38
3fffeaf0:  216376d3 34f7b3d2 a4956504 f221ceb7
3fffeb00:  4000b6c4 3fffeb40 3fffed10 ffffffff
3fffeb10:  3fffd644 3fffeb20 00000008 3a432ea6
3fffeb20:  00000000 a0020000 4000a333 3fffec48
3fffeb30:  3fffed10 3fffec28 3fffed60 ffffffff
3fffeb40:  68f807f7 80112c0b a28d0b9c 86398b25
3fffeb50:  6b2ffae3 00000400 00000000 8e70d1a5
3fffeb60:  d6758147 92b28e23 16deec43 47b9bcf8
3fffeb70:  00000080 00000000 00000000 00000000
3fffeb80:  00000000 00000000 00000000 00000000
3fffeb90:  00000000 00000000 a0020000 3fffec20
3fffeba0:  4000ba18 3fffec20 00000001 3ffedcbf
3fffebb0:  3fffed10 40100384 3fffc258 00000022
3fffebc0:  3fffc200 40100384 3fffc258 4000050c
3fffebd0:  4000b804 00000030 00000000 ffffffff
3fffebe0:  3f383d3e 393a3a6c 5c5c6d39 5c5c5c5c
3fffebf0:  5c5c5c5c 5c5c5c5c 5c5c5c5c 5c5c5c5c
3fffec00:  5c5c5c5c 5c5c5c5c 5c5c5c5c 5c5c5c5c
3fffec10:  5c5c5c5c 5c5c5c5c 5c5c5c5c 5c5c5c5c
3fffec20:  3fffebe0 3fffed10 5c5c5c5c 5c5c5c5c
3fffec30:  5c5c5c5c 5c5c5c5c 5c5c5c5c 5c5c5c5c
3fffec40:  00000040 00000014 5c5c5c5c 5c5c5c5c
3fffec50:  3fffec10 3fffecf0 3fffece0 ca3d70a3
3fffec60:  3fffecb8 3fffed10 4000ba40 3fffed74
3fffec70:  0000046f 3fffecbc 00000004 4010011c
3fffec80:  3ffedcbf 0000000a 00000000 40100448
3fffec90:  3fffecd0 3fffecf0 4000b7a0 0000000a
3fffeca0:  4000b7eb 3fffecd8 3fffc258 4000050c
3fffecb0:  3ffedcbf 0000000a 3fffecf0 00000014
3fffecc0:  4000b7fa 3ffedcbf 3ffedc98 00000011
3fffecd0:  3ffedc98 3fffece0 00000011 00000004
3fffece0:  02000000 ffffffac 0000000f 3ffee2c8
3fffecf0:  652eb866 855f7c4c 8e62c9a5 52a2afbb
3fffed00:  e8a34d28 00000030 00000017 ffffffff
3fffed10:  8e70d1a5 d6758147 92b28e23 16deec43
3fffed20:  47b9bcf8 00000003 3ffee6f0 fffffdff
3fffed30:  3fffed60 4000b872 0000000c 3ffedd14
3fffed40:  00000002 00000014 0000000a 00001000
3fffed50:  3ffedc98 00000017 60000200 42da0000
3fffed60:  75f73f08 a99ac0e1 f64ced20 d1cf807b
3fffed70:  409daa6a 00000006 00000005 ffffff80
3fffed80:  40243ea6 3ffee2c8 4023ea4c 4023e6ac
3fffed90:  3ffefc2c 3ffedcbf 3ffedc98 00000011
3fffeda0:  00001000 4023e6ac 4023ea4c 4023e6ac
3fffedb0:  3ffedd00 3ffedcbf 40243e3d 0000000a
3fffedc0:  3fff0027 3ffee2c8 3ffedcbf 3ffedc98
3fffedd0:  40244aca 3ffeee58 4023ea4c 4023e6ac
3fffede0:  00000011 00000030 00000010 ffffffff
3fffedf0:  4023eaa8 402540e8 3ffedb78 ffffffef
3fffee00:  401063a3 00000000 00000000 000000b0
3fffee10:  00000000 00000000 00000000 00000000
3fffee20:  4023dff0 3ffee268 3ffefc2c 00000030
3fffee30:  3ffee2c8 4023dfb4 3ffee2c8 00000000
3fffee40:  4023ea45 3ffee2c8 00000000 4023e6ac
3fffee50:  4023e82f 3ffee2c8 3ffedd32 4000050c
3fffee60:  40000f68 00000030 00000010 ffffffff
3fffee70:  40000f58 00000000 00000020 00000000
3fffee80:  00004bc6 4023c524 3ffee988 00000000
3fffee90:  00000000 3ffef4dc 00000000 3fffdab0
3fffeea0:  00000000 3fffdcb0 3ffee9c8 00000030
3fffeeb0:  00000000 4023c1ae 3ffee170 00000000
3fffeec0:  4023e6ac 4bc6a7f0 00000bec 60000600
3fffeed0:  4025bb20 3ffefc2c 4023e6b6 3ffee170
3fffeee0:  4023c257 3ffee170 40100256 3020c49b
3fffeef0:  4023bfc9 3ffee188 3ffee9b0 002ea8ec
3fffef00:  60000600 00000002 3ffee988 402195dc
3fffef10:  4023c52d 000e773a 3ffee9b0 60000600
3fffef20:  4024cdc1 3ffee188 3ffee9b0 002e9297
3fffef30:  4024ce06 3fffdab0 00000000 3fffdcb0
3fffef40:  3ffee9d0 3fffdab0 00000000 4020d2d3
3fffef50:  40000f49 40000f49 3fffdab0 40000f49
3fffef60:  40000e19 40001878 00000002 3fffffb0
3fffef70:  3fffff10 aa55aa55 000000ad 40104be8
3fffef80:  40104bee 00000002 3fffffb0 73757461
3fffef90:  4010000d 72703c3e 3c003e65 6572702f
3fffefa0:  40100dac 3fffef3c 40100d4d 3fffff38
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 feefeffe feefeffe feefeffe
3ffff700:  feefeffe feefeffe feefeffe feefeffe
3ffff710:  feefeffe feefeffe feefeffe feefeffe
3ffff720:  feefeffe feefeffe feefeffe feefeffe
3ffff730:  feefeffe feefeffe feefeffe feefeffe
3ffff740:  feefeffe feefeffe feefeffe feefeffe
3ffff750:  feefeffe feefeffe feefeffe feefeffe
3ffff760:  feefeffe feefeffe feefeffe feefeffe
3ffff770:  feefeffe feefeffe feefeffe feefeffe
3ffff780:  feefeffe feefeffe feefeffe feefeffe
3ffff790:  feefeffe feefeffe feefeffe feefeffe
3ffff7a0:  feefeffe feefeffe feefeffe feefeffe
3ffff7b0:  feefeffe feefeffe feefeffe feefeffe
3ffff7c0:  feefeffe feefeffe feefeffe feefeffe
3ffff7d0:  feefeffe feefeffe feefeffe feefeffe
3ffff7e0:  feefeffe feefeffe feefeffe feefeffe
3ffff7f0:  feefeffe feefeffe feefeffe feefeffe
3ffff800:  feefeffe feefeffe feefeffe feefeffe
3ffff810:  feefeffe feefeffe feefeffe feefeffe
3ffff820:  feefeffe feefeffe feefeffe feefeffe
3ffff830:  feefeffe feefeffe feefeffe feefeffe
3ffff840:  feefeffe feefeffe feefeffe feefeffe
3ffff850:  feefeffe feefeffe feefeffe feefeffe
3ffff860:  feefeffe feefeffe feefeffe feefeffe
3ffff870:  feefeffe feefeffe feefeffe feefeffe
3ffff880:  feefeffe feefeffe feefeffe feefeffe
3ffff890:  feefeffe feefeffe feefeffe feefeffe
3ffff8a0:  feefeffe feefeffe feefeffe feefeffe
3ffff8b0:  feefeffe feefeffe feefeffe feefeffe
3ffff8c0:  feefeffe feefeffe feefeffe feefeffe
3ffff8d0:  feefeffe feefeffe feefeffe feefeffe
3ffff8e0:  feefeffe feefeffe feefeffe feefeffe
3ffff8f0:  feefeffe feefeffe feefeffe feefeffe
3ffff900:  feefeffe feefeffe feefeffe feefeffe
3ffff910:  feefeffe feefeffe feefeffe feefeffe
3ffff920:  feefeffe feefeffe feefeffe feefeffe
3ffff930:  feefeffe feefeffe feefeffe feefeffe
3ffff940:  feefeffe feefeffe feefeffe feefeffe
3ffff950:  feefeffe feefeffe feefeffe feefeffe
3ffff960:  feefeffe feefeffe feefeffe feefeffe
3ffff970:  feefeffe feefeffe feefeffe feefeffe
3ffff980:  feefeffe feefeffe feefeffe feefeffe
3ffff990:  feefeffe feefeffe feefeffe feefeffe
3ffff9a0:  feefeffe feefeffe feefeffe feefeffe
3ffff9b0:  feefeffe feefeffe feefeffe feefeffe
3ffff9c0:  feefeffe feefeffe feefeffe feefeffe
3ffff9d0:  feefeffe feefeffe feefeffe feefeffe
3ffff9e0:  feefeffe feefeffe feefeffe feefeffe
3ffff9f0:  feefeffe feefeffe feefeffe feefeffe
3ffffa00:  feefeffe feefeffe feefeffe feefeffe
3ffffa10:  feefeffe feefeffe feefeffe feefeffe
3ffffa20:  feefeffe feefeffe feefeffe feefeffe
3ffffa30:  feefeffe feefeffe feefeffe feefeffe
3ffffa40:  feefeffe feefeffe feefeffe feefeffe
3ffffa50:  feefeffe feefeffe feefeffe feefeffe
3ffffa60:  feefeffe feefeffe feefeffe feefeffe
3ffffa70:  feefeffe feefeffe feefeffe feefeffe
3ffffa80:  feefeffe feefeffe feefeffe feefeffe
3ffffa90:  feefeffe feefeffe feefeffe feefeffe
3ffffaa0:  feefeffe feefeffe feefeffe feefeffe
3ffffab0:  feefeffe feefeffe feefeffe feefeffe
3ffffac0:  feefeffe feefeffe feefeffe feefeffe
3ffffad0:  feefeffe feefeffe feefeffe feefeffe
3ffffae0:  feefeffe feefeffe feefeffe feefeffe
3ffffaf0:  feefeffe feefeffe feefeffe feefeffe
3ffffb00:  feefeffe feefeffe feefeffe feefeffe
3ffffb10:  feefeffe feefeffe feefeffe feefeffe
3ffffb20:  feefeffe feefeffe feefeffe feefeffe
3ffffb30:  feefeffe feefeffe feefeffe feefeffe
3ffffb40:  feefeffe feefeffe feefeffe feefeffe
3ffffb50:  feefeffe feefeffe feefeffe feefeffe
3ffffb60:  feefeffe feefeffe feefeffe feefeffe
3ffffb70:  40100459 feefeffe feefeffe feefeffe
3ffffb80:  c0036035 feefeffe feefeffe feefeffe
3ffffb90:  feefeffe feefeffe feefeffe 00000022
3ffffba0:  3fffc200 40100384 3fffc258 4000050c
3ffffbb0:  4000d31c 00000030 00000008 ffffffff
3ffffbc0:  40211500 00000000 00000000 0000000a
3ffffbd0:  00000000 000000c0 00000000 00000000
3ffffbe0:  0000000a 402601c9 3ffffe03 3ffffdc0
3ffffbf0:  3ffffe02 3ffffe60 40215918 00000030
3ffffc00:  40100459 feefeffe 40100256 272b020c
3ffffc10:  c0036035 feefeffe feefeffe feefeffe
3ffffc20:  ffffffff 0000000d 3ffef2cc 00000022
3ffffc30:  3fffc200 40100384 3fffc258 4000050c
3ffffc40:  40215918 00000030 00000004 ffffffff
3ffffc50:  40211169 3ffe8308 3ffffe60 3ffffe03
3ffffc60:  00000000 00000000 3ffffd70 3ffffdd9
3ffffc70:  0000000a 402601c9 00000001 3ffffdc0
3ffffc80:  3ffe8308 3ffffe60 40215918 00000030
3ffffc90:  40215918 3ffffe20 00000001 00000000
3ffffca0:  000000a0 3fff0450 000007e7 3ffffe60
3ffffcb0:  00000000 00000000 0000000a 00000000
3ffffcc0:  00000000 00000000 0000000a 00000000
3ffffcd0:  40215cac 00000064 0000002e 00000000
3ffffce0:  00000000 a0000000 00000000 0000001c
3ffffcf0:  00000000 3fff0450 00000000 00000000
3ffffd00:  3ffffe60 00000000 3ffffe60 402159de
3ffffd10:  0000a000 3ffffe03 0000001f 401053c1
3ffffd20:  40100459 0000000d 40211500 00000001
3ffffd30:  c0036035 00000001 3ffffe60 402159de
3ffffd40:  3ffffdc0 3ffffe02 3ffffd70 00000022
3ffffd50:  3fffc200 40100384 3fffc258 4000050c
3ffffd60:  40215e2f 00000030 00000018 ffffffff
3ffffd70:  00000000 4bc6a7f0 00000885 00000020
3ffffd80:  00000000 00000000 4bc6a7f0 00000000
3ffffd90:  c0036035 402601c9 40100256 bef9db22
3ffffda0:  00000000 3ffef2c8 3ffe89e0 00000022
3ffffdb0:  ffffffff 0000000d 3ffef2cc 4010011c
3ffffdc0:  40100459 00000030 00000000 40100448
3ffffdd0:  c0036035 3fffff10 0000000a 0000000a
3ffffde0:  40100459 00000002 ff000000 00000022
3ffffdf0:  3fffc200 40100384 3fffc258 4000050c
3ffffe00:  4020d45b 00000030 00000010 ffffffff
3ffffe10:  40100459 002d9263 00000000 00000000
3ffffe20:  40100459 00000000 00000000 fffffffe
3ffffe30:  c0036035 3fffc6fc 00000001 00000022
3ffffe40:  3fffc200 40100384 3fffc258 00000022
3ffffe50:  3fffc200 40100384 3fffc258 4000050c
3ffffe60:  4020341f 00000030 00000010 ffffffff
3ffffe70:  40203404 00000baa 3ffeefb8 00000000
3ffffe80:  3ffeefb8 0000086c 00000001 000003e8
3ffffe90:  00000000 00000002 0000033e 3ffef450
3ffffea0:  00000000 3ffeefb8 3ffef2fc 00000030
3ffffeb0:  00000000 3fffdad0 3ffef480 00000030
3ffffec0:  4020d3fa 00000000 00000001 00000001
3ffffed0:  3fffdab0 00000000 3fffd9d0 3ffef480
3ffffee0:  00000000 00000000 00000001 3ffef450
3ffffef0:  00000000 3fffdad0 3ffef480 00000030
3fffff00:  3ffef2c8 3ffef2d0 3ffef1c8 4020d85e
3fffff10:  00000000 4bc6a7f0 00000baa 3ffef2fc
3fffff20:  40105504 000e9a51 3ffef4dc 00000000
3fffff30:  3ffee9b0 3ffef4dc 3ffe8514 3ffef4dc
3fffff40:  3ffef0b8 3ffef2fc 4020d348 3fffefa0
3fffff50:  3ffef4dc 3ffef0b8 00000064 4020160f
3fffff60:  3ffef0b8 00000000 3ffef450 402030b4
3fffff70:  4020e954 4020e968 3ffef0b8 40202fda
3fffff80:  402028b8 00000000 4020e994 4020e97c
3fffff90:  00000000 00000000 00000001 3ffef480
3fffffa0:  3fffdad0 00000000 3ffef450 4020d3f4
<<<stack<<<
ets Jan  8 2013,rst cause:2, boot mode:(3,6)
load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
v951aeffa
~ld

[CRCinAU]

I wonder if this is somewhat related to #5788 - even though I'm not using SPIFFS at all?

[CRCinAU]

Debugging this further, the MCVE code actually works.... (if you add the missing Serial.begin(115200).

It looks like this dies when I do a check for OTA updates - which takes a couple of seconds to run.

Commenting out the OTA updates check has no effect and it still crashes.

If I wrap this in noInterrupts() and then interrupts() when I call the function that does the OTA http check, everything seems to be fine.

Is this expected?

It still crashes. and I don't have any idea why now :(

The full code I'm using is here:
https://git.crc.id.au/netwiz/ESP8266_Code/src/branch/master/GarageDoor

[CRCinAU]

Pinging @d-a-v - he seems the master of interrupts on ESP8266 from everything I've read. This may be something simple that I just haven't been able to get my head around... Interrupts seem like unstable voodoo at the moment :(

[d-a-v]

I am far from being the interrupt master :)
Please summarize your findings, update your MCVE, add Serial.begin()

actually works
still crashed

Right after boot, or after some time ?
If you suspect millis(), have you tried to replace/remove it just to verify whether it's this call ?
Have you had a look to Functional Interrupts ?

I suggest to use git version master branch instead of v2.5.0.

[CRCinAU]

I started adding code to the MCVE - but couldn't make it crash again until I hit the entire program I have :(

When I'm looking at the serial output, I can see a number of lines print, then there's a pause, sometimes there's a flood of loops run, then there's the reset again. It seems to do 2 x loops, then the pause, then sometimes a rush, then reset.

I'm going to try putting in a whole lot more Serial.print debug into my code and see what I can figure out before the crash.

This is my first experiment in interrupts - so I might be missing lots - but I've been finding what I can from your replies to other interrupt bug reports to hopefully get it right.

Functional Interrupts - do you have any links to information about this? As mentioned, this is my first attempt here.

[CRCinAU]

Interesting news - when running with Debug port serial and Core+WiFi debug, see the following output:

SDK:3.0.0-dev(c0f7b44)/Core:2.5.0=20500000/lwIP:STABLE-2_1_2_RELEASE/glue:1.1/BearSSL:6778687
sleep disable

Running at millis: 2169
upChanges = 0
downChanges = 240
PIN_UP_LED = 0
PIN_DOWN_LED = 1
wifi evt: 2

Running at millis: 3171
upChanges = 0
downChanges = 150
PIN_UP_LED = 0
PIN_DOWN_LED = 1

scandone

At this point, the crash happens.

This code has millis() commented out in the interrupt - so I'm guessing we can rule that bit out... However I do note that I seem to get many more interrupts than I was expecting... I didn't see that when filtering for +50ms - however I wonder if the frequency of interrupts may be part of the problem?

[devyte]

This looks like either an issue in the user's code or another instance of #5784 .
I can't reproduce with latest git and the provided MCVE. Closing for now.
If something actionable is found, please report it here and this will be reopened.

[laercionit]

I have the same problem.

[d-a-v]

Are you able to reproduce the bug with core-release-2.4.2,

or better with core-git-master ?
https://arduino-esp8266.readthedocs.io/en/latest/installing.html#using-git-version (#5882 #5816)

[laercionit]

The problem does not occur in 2.4.2, only in 2.5.0
I'm preparing environment to test with the master now.

[CRCinAU]

I have a completely non-verified hunch on the problem... As the crash always happened at the 'scandone' print, I think that something to do with the wifi library is blocking or causing interrupts to stack up. I did actually find out that the signal I was monitoring was dirty as hell causing ~40-60k interrupts per second (using CHANGE). That may well be related.

As I can't easily change the circuit, I ended up using a 'best out of 10' polling method instead.

[laercionit]

Unfortunately I can not put the master to run, it seems that incorporated SDFat in it, this is generating several conflicts in my project.

[d-a-v]

It is supposed to be compatible and this version will be in core-release-2.5.1 soon,
so please elaborate.

[Frogmore42]

I have been battling this issue trying to get 9-bit soft serial to work reliably. I finally got some output from the SDK logging and discovered this:
espressif/ESP8266_NONOS_SDK#90

It looks like the sdk doesn't work well when ISRs take longer than 50us, so high speed software serial is pretty much out.