ESP32F crashes with Wifi Library + Websocket

[Findus LeChat]

Dear community,
I am fighting crashes on my IoT devices without being able to solve the problem.
The devices are connecting to Wifi and send and receive Websockets request that are Json-Encoded.
I use the following libraries:
-ArduinoWebsockets
-ArduinoJSON
Coding in Arduino IDE with ESP8266 tools installed (Version 2.6.3)
The debug logs (decoded with the Arduino plugin) give the below output:
I am not sure how to locate the error and how to read these stack results. Is it the last executed commands in backwards order?
Thank you very much for your help!

Code: [Select all] [Expand/Collapse]

1. Exception 29: StoreProhibited: A store referenced a page mapped with an attribute that does not permit stores
2. PC: 0x4000e1b2
3. EXCVADDR: 0x00000000
4.  
5. Decoding stack results
6. 0x40222678: mem_malloc at core/mem.c line 210
7. 0x40218a85: do_memp_malloc_pool at core/memp.c line 255
8. 0x40218ac4: memp_malloc at core/memp.c line 356
9. 0x4021a2d9: sys_timeout_abs at core/timeouts.c line 189
10. 0x4021a4dc: sys_check_timeouts at core/timeouts.c line 390
11. 0x4020cda7: loop_task(ETSEvent*) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 188
12. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
13. 0x4020b744: Print::print(__FlashStringHelper const*) at esp8266\hardware\esp8266\2.6.3\cores\esp8266/Print.h line 63
14. 0x4021838d: glue2esp_linkoutput at glue-esp/lwip-esp.c line 301
15. 0x402110d0: WebSocketsClient::runCbEvent(WStype_t, unsigned char*, unsigned int) at X:\Nextcloud\Uncrypted\Programmation\Arduino\libraries\WebSockets\src/WebSocketsClient.h line 139
16. 0x40209eb0: WebSocketsClient::messageReceived(WSclient_t*, WSopcode_t, unsigned char*, unsigned int, bool) at X:\Nextcloud\Uncrypted\Programmation\Arduino\libraries\WebSockets\src\WebSocketsClient.cpp line 374
17. 0x40218616: new_linkoutput at glue-lwip/lwip-git.c line 260
18. 0x40218a30: ethernet_output at netif/ethernet.c line 312
19. 0x40202d07: ArduinoJson6141_0000010::JsonDeserializer  , ArduinoJson6141_0000010::StringMover>::parseVariant(ArduinoJson6141_0000010::VariantData&) at X:\Nextcloud\Uncrypted\Programmation\Arduino\libraries\arduino_602693\src/ArduinoJson/Json/JsonDeserializer.hpp line 185
20. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
21. 0x40202fb3: ArduinoJson6141_0000010::JsonDeserializer  , ArduinoJson6141_0000010::StringMover>::parseObject(ArduinoJson6141_0000010::CollectionData&) at X:\Nextcloud\Uncrypted\Programmation\Arduino\libraries\arduino_602693\src/ArduinoJson/Json/JsonDeserializer.hpp line 162
22. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
23. 0x4020de25: uart_write(uart_t*, char const*, size_t) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\uart.cpp line 509
24. 0x401003bc: ets_intr_unlock() at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 146
25. 0x4020b460: HardwareSerial::write(unsigned char const*, unsigned int) at esp8266\hardware\esp8266\2.6.3\cores\esp8266/HardwareSerial.h line 165
26. 0x4020b751: Print::print(__FlashStringHelper const*) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\Print.cpp line 114
27. 0x4020de25: uart_write(uart_t*, char const*, size_t) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\uart.cpp line 509
28. 0x401004d8: millis() at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_wiring.cpp line 188
29. 0x4020b454: HardwareSerial::write(unsigned char const*, unsigned int) at esp8266\hardware\esp8266\2.6.3\cores\esp8266/HardwareSerial.h line 164
30. 0x4020b460: HardwareSerial::write(unsigned char const*, unsigned int) at esp8266\hardware\esp8266\2.6.3\cores\esp8266/HardwareSerial.h line 165
31. 0x4020b454: HardwareSerial::write(unsigned char const*, unsigned int) at esp8266\hardware\esp8266\2.6.3\cores\esp8266/HardwareSerial.h line 164
32. 0x4020af45: Print::write(char const*) at esp8266\hardware\esp8266\2.6.3\cores\esp8266/Print.h line 60
33. 0x4020b7e0: Print::println() at esp8266\hardware\esp8266\2.6.3\cores\esp8266\Print.cpp line 186
34. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
35. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
36. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
37. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
38. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
39. 0x401003bc: ets_intr_unlock() at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 146
40. 0x40100334: ClocklessController14, 20, 50, 30, (EOrder)66, 0, false, 5>::showRGBInternal(PixelController(EOrder)66, 1, 4294967295u>) at X:\Nextcloud\Uncrypted\Programmation\Arduino\libraries\LS_FastLED-3.1.8/platforms/esp/8266/clockless_esp8266.h line 13
41. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
42. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
43. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
44. 0x40201311: animate() at temp_compile_Arduino\sketch\TET_Animations.cpp line 30
45. 0x402012cb: animate() at temp_compile_Arduino\sketch\TET_Animations.cpp line 13
46. 0x402066a8: ClocklessController14, 20, 50, 30, (EOrder)66, 0, false, 5>::showPixels(PixelController(EOrder)66, 1, 4294967295u>&) at X:\Nextcloud\Uncrypted\Programmation\Arduino\libraries\LS_FastLED-3.1.8/platforms/esp/8266/clockless_esp8266.h line 41
47. 0x402067c0: CPixelLEDController(EOrder)66, 1, 4294967295u>::show(CRGB const*, int, CRGB) at X:\Nextcloud\Uncrypted\Programmation\Arduino\libraries\LS_FastLED-3.1.8/controller.h line 398
48. 0x4020b0aa: CFastLED::countFPS(int) at X:\Nextcloud\Uncrypted\Programmation\Arduino\libraries\LS_FastLED-3.1.8\FastLED.cpp line 215
49. 0x4020b138: CFastLED::show(unsigned char) at X:\Nextcloud\Uncrypted\Programmation\Arduino\libraries\LS_FastLED-3.1.8\FastLED.cpp line 64
50. 0x4020675c: CPixelLEDController(EOrder)66, 1, 4294967295u>::show(CRGB const*, int, CRGB) at X:\Nextcloud\Uncrypted\Programmation\Arduino\libraries\LS_FastLED-3.1.8/controller.h line 395
51. 0x401004d8: millis() at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_wiring.cpp line 188
52. 0x401004d8: millis() at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_wiring.cpp line 188
53. 0x4020132e: animate() at temp_compile_Arduino\sketch\TET_Animations.cpp line 37
54. 0x401003e0: ets_post(uint8, ETSSignal, ETSParam) at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 160
55. 0x40100401: esp_schedule() at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 113
56. 0x4020cf19: loop_wrapper() at esp8266\hardware\esp8266\2.6.3\cores\esp8266\core_esp8266_main.cpp line 182

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[lbernstone]

You have an esp8266, not esp32. https://github.com/esp8266/Arduino/issues

[raysconcept]

EDIT (12may2021): I discovered that one problem occurred when parsing the json that came in via websocket. ESP kept running with fastled performing a default function, but ESP got stuck once json was being parsed (done in the main loop when receiving it via websocket). At this time I had defined StaticJsonDocument<200> jsondoc outside of setup() and outside of loop().

The solution was to add StaticJsonDocument<200> jsondoc INSIDE of the main loop, just before the parser, see code below.

QUESTION ADDITIONAL REGARDING STRINGS IN RELATION TO JSON:
I am using String fromIn = jsondoc["from"]; to retrieve the values from the parser. In other posts I read that this should not be done in this manner (using String). Does anybody have a better way to do this? I believe this is bad for memory allocation or so.

=======================================================

// this is an example of data that is comming in:
// {"from":"ESP","msg":"PROBEOKE","mac":"7c-9e-bd-d2-ed-9c-","time":"19326"}

StaticJsonDocument<200> jsondoc; // <== THIS IS WHAT I ADDED FOR THE SOLUTION
DeserializationError err = deserializeJson(jsondoc, data);
if (err)
{
Serial.println("error deserialization");
Serial.println(err.c_str());
return;
}
if (jsondoc["from"]) // check if not null before dereferencing
{
String fromIn = jsondoc["from"];
String toIn = jsondoc["to"];
String actionIn = jsondoc["action"];
String msgIn = jsondoc["msg"];
}
=======================================================
=======================================================
=======================================================
ORIGINAL POST
=======================================================
I am working with ESP32, Wifi + WebSockets + ArduinoJson + Fastled and experiences crashes also.

It seems to run fine until I implement FastLed. I am sending instructions from nodejs (what leds to turn on etc) via websocket in json-format. It crashes when fastled.show(); is invoked;

=======================================================
just before the error occurs and crashes, the jsonparser stops working (results in null on all values)
then this error pops, and the esp is nonresonsive, the error message is even not completed

Guru Meditation Error: Core 1 panic'ed (StoreProhi
=======================================================
hardware:
board: huzzah32 feather
leds: ws2815
=======================================================
platformio.ini:

[env:huzzah]
platform = espressif32
board = featheresp32
framework = arduino
lib_deps =
bblanchon/ArduinoJson@^6.17.3
ottowinter/ArduinoJson-esphomelib@^6.15.2
fastled/FastLED@^3.4.0

=======================================================
This is the warning message I get when uploading to the board (not sure if it is related to the crash):

In file included from src\main.cpp:38:0:
.pio\libdeps\huzzah\FastLED\src/FastLED.h:14:21: note: #pragma message: FastLED version 3.004.000
# pragma message "FastLED version 3.004.000"
^
In file included from .pio\libdeps\huzzah\FastLED\src/FastLED.h:65:0,
from src\main.cpp:38:
.pio\libdeps\huzzah\FastLED\src/fastspi.h:135:23: note: #pragma message: No hardware SPI pins defined. All SPI access will default to bitbanged output
# pragma message "No hardware SPI pins defined. All SPI access will default to bitbanged output"
=======================================================