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ArduinoOTA not working when Serial speed is set to 9600 #6506

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ArduinoOTA not working when Serial speed is set to 9600#6506
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@ruggi99

Description

@ruggi99
ruggi99
opened on Sep 12, 2019

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: [ESP-12E]
  • Core Version: [latest git]
  • Development Env: [Arduino IDE]
  • Operating System: [Windows]

Settings in IDE

  • Module: [Nodemcu]
  • Flash Mode: [qio|dio|other] (Don't know)
  • Flash Size: [4MB]
  • lwip Variant: [v2 Lower Memory]
  • Reset Method: [ck|nodemcu] (Don't know)
  • Flash Frequency: [40Mhz]
  • CPU Frequency: [80Mhz]
  • Upload Using: [SERIAL]
  • Upload Speed: [115200]

Problem Description

I'm using latest git version and when I upload the example sketch BasicOta.ino from the ArduinoOTA library, the sketch works fine, I can update sketch Over The Air, ecc. The problem comes when I change the serial speed from 115200 (default in the example) to 9600. When I change it, ESP8266 runs always in stack errors. I've not tried with others serial speeds.

MCVE Sketch (BasicOTA.ino)

#include <ESP8266WiFi.h> #include <ESP8266mDNS.h> #include <WiFiUdp.h> #include <ArduinoOTA.h> #ifndef STASSID #define STASSID "your-ssid" #define STAPSK "your-password" #endif const char* ssid = STASSID; const char* password = STAPSK; void setup() { Serial.begin(9600); Serial.println("Booting"); WiFi.mode(WIFI_STA); WiFi.begin(ssid, password); while (WiFi.waitForConnectResult() != WL_CONNECTED) { Serial.println("Connection Failed! Rebooting..."); delay(5000); ESP.restart(); } // Port defaults to 8266 // ArduinoOTA.setPort(8266); // Hostname defaults to esp8266-[ChipID] // ArduinoOTA.setHostname("myesp8266"); // No authentication by default // ArduinoOTA.setPassword("admin"); // Password can be set with it's md5 value as well // MD5(admin) = 21232f297a57a5a743894a0e4a801fc3 // ArduinoOTA.setPasswordHash("21232f297a57a5a743894a0e4a801fc3"); ArduinoOTA.onStart([]() { String type; if (ArduinoOTA.getCommand() == U_FLASH) { type = "sketch"; } else { // U_FS type = "filesystem"; } // NOTE: if updating FS this would be the place to unmount FS using FS.end() Serial.println("Start updating " + type); }); ArduinoOTA.onEnd([]() { Serial.println("\nEnd"); }); ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) { Serial.printf("Progress: %u%%\r", (progress / (total / 100))); }); ArduinoOTA.onError([](ota_error_t error) { Serial.printf("Error[%u]: ", error); if (error == OTA_AUTH_ERROR) { Serial.println("Auth Failed"); } else if (error == OTA_BEGIN_ERROR) { Serial.println("Begin Failed"); } else if (error == OTA_CONNECT_ERROR) { Serial.println("Connect Failed"); } else if (error == OTA_RECEIVE_ERROR) { Serial.println("Receive Failed"); } else if (error == OTA_END_ERROR) { Serial.println("End Failed"); } }); ArduinoOTA.begin(); Serial.println("Ready"); Serial.print("IP address: "); Serial.println(WiFi.localIP()); } void loop() { ArduinoOTA.handle(); }

Debug Messages

scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 0 (4) reconnect wifi evt: 1 STA disconnect: 4 scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 5 (10) add 0 aid 3 cnt connected with SSID, channel 11 dhcp client start... wifi evt: 0 ip:192.168.1.101,mask:255.255.255.0,gw:192.168.1.1 wifi evt: 3 [MDNSResponder] default interface STA selected (none was specified) [MDNSResponder] _allocUDPContext [MDNSResponder] addService: Succeeded to add '-.arduino.tcp'! OTA server at: esp8266-97aff5.local:8266 Ready IP address: 192.168.1.101 [MDNSResponder] _updateProbeStatus: Starting host probing... [MDNSResponder] _sendHostProbe (esp8266-97aff5, 10066) [MDNSResponder] _sendMDNSMessage_Multicast: Will send to '224.0.0.251'. [MDNSResponder] _prepareMDNSMessage [MDNSResponder] _prepareMDNSMessage: ID:0 QR:0 OP:0 AA:0 TC:0 RD:0 RA:0 R:0 QD:1 AN:0 NS:1 AR:0 [MDNSResponder] _writeMDNSQuestion [MDNSResponder] _writeMDNSAnswer_A (192.168.1.101) [MDNSResponder] _updateProbeStatus: Did sent host probe [MDNSResponder] _sendServiceProbe (esp8266-97aff5.arduino.tcp, 10351) [MDNSResponder] _sendMDNSMessage_Multicast: Will send to '224.0.0.251'. [MDNSResponder] _prepareMDNSMessage [MDNSResponder] _prepareMDNSMessage: ID:0 QR:0 OP:0 AA:0 TC:0 RD:0 RA:0 R:0 QD:1 AN:0 NS:2 AR:2 [MDNSResponder] _writeMDNSQuestion [MDNSResponder] _writeMDNSAnswer_PTR_NAME [MDNSResponder] _writeMDNSAnswer_SRV [MDNSResponder] _writeMDNSAnswer_TXT [MDNSResponder] _writeMDNSAnswer_A (192.168.1.101) [MDNSResponder] _updateProbeStatus: Did sent service probe (1) :urn 47 [MDNSResponder] _callProcess (11054, triggered by: 192.168.1.10) [MDNSResponder] _parseMessage (Time: 11056 ms, heap: 48312 bytes, from 192.168.1.10(5353), to 224.0.0.251(5353)) :urd 2, 47, 0 :urd 1, 47, 2 :urd 1, 47, 3 :urd 2, 47, 4 :urd 2, 47, 6 :urd 2, 47, 8 :urd 2, 47, 10 [MDNSResponder] _parseResponse: Received a response :urd 1, 47, 12 :urd 13, 47, 13 :urd 1, 47, 26 :urd 5, 47, 27 :urd 1, 47, 32 :urd 2, 47, 33 :urd 2, 47, 35 :urd 4, 47, 37 :urd 2, 47, 41 :urd 4, 47, 43 [MDNSResponder] _readRRAnswer: Ruggero-Fisso.local Type:0x0001 Class:0x0001 TTL:10, RDLength:4 A IP:192.168.1.10 [MDNSResponder] _processAnswers: Processing answers... [MDNSResponder] _parseMessage: Done (Succeeded after 560 ms, ate 0 bytes, remaining 48312) :urch 71, 253 [MDNSResponder] _callProcess (11859, triggered by: 192.168.1.10) [MDNSResponder] _parseMessage (Time: 11860 ms, heap: 48288 bytes, from 192.168.1.101(5353), to 224.0.0.251(5353)) :urd 2, 253, 0 :urd 1, 253, 2 :urd 1, 253, 3 :urd 2, 253, 4 :urd 2, 253, 6 :urd 2, 253, 8 :urd 2, 253, 10 [MDNSResponder] _readRRQuestion :urd 1, 253, 12 :urd 14, 253, 13 :urd 1, 253, 27 :urd 8, 253, 28 :urd 1, 253, 36 :urd 4, 253, 37 :urd 1, 253, 41 :urd 5, 253, 42 :urd 1, 253, 47 :urd 2, 253, 48 :urd 2, 253, 50 [MDNSResponder] _readRRQuestion esp8266-97aff5._arduino._tcp.local Type:0x00FF Class:0x0001 Unicast [MDNSResponder] _replyMaskForService(esp8266-97aff5.arduino.tcp): 0xC0 [MDNSResponder] _parseQuery: Possible race-condition for service domain esp8266-97aff5.arduino.tcp detected while probing. [MDNSResponder] _parseQuery: Unicast response for 192.168.1.101! :urd 1, 253, 52 :urd 8, 253, 53 :urd 1, 253, 61 :urd 4, 253, 62 :urd 1, 253, 66 :urd 5, 253, 67 :urd 1, 253, 72 :urd 2, 253, 73 :urd 2, 253, 75 :urd 4, 253, 77 :urd 2, 253, 81 :urd 1, 253, 83 :urd 14, 253, 84 :urd 1, 253, 98 :urd 8, 253, 99 :urd 1, 253, 107 :urd 4, 253, 108 :urd 1, 253, 112 :urd 5, 253, 113 :urd 1, 253, 118 [MDNSResponder] _readRRAnswer: _arduino._tcp.local Type:0x000C Class:0x0001 TTL:4500, RDLength:36 PTR esp8266-97aff5._arduino._tcp.local [MDNSResponder] _replyMaskForService(esp8266-97aff5.arduino.tcp): 0x20 :urd 1, 253, 119 :urd 1, 253, 120 :urd 1, 253, 83 :urd 14, 253, 84 :urd 1, 253, 98 :urd 8, 253, 99 :urd 1, 253, 107 :urd 4, 253, 108 :urd 1, 253, 112 :urd 5, 253, 113 :urd 1, 253, 118 :urd 2, 253, 121 :urd 2, 253, 123 :urd 4, 253, 125 :urd 2, 253, 129 :urd 2, 253, 131 :urd 2, 253, 133 :urd 2, 253, 135 :urd 1, 253, 137 :urd 14, 253, 138 :urd 1, 253, 152 :urd 5, 253, 153 :urd 1, 253, 158 [MDNSResponder] _readRRAnswer: esp8266-97aff5._arduino._tcp.local Type:0x0021 Class:0x0001 TTL:4500, RDLength:28 SRV Port:8266 esp8266-97aff5.local [MDNSResponder] _replyMaskForService(esp8266-97aff5.arduino.tcp): 0x80 [MDNSResponder] _parseQuery: Tiebreak (SRV) won (was an old message)! :urd 1, 253, 159 :urd 1, 253, 160 :urd 1, 253, 83 :urd 14, 253, 84 :urd 1, 253, 98 :urd 8, 253, 99 :urd 1, 253, 107 :urd 4, 253, 108 :urd 1, 253, 112 :urd 5, 253, 113 :urd 1, 253, 118 :urd 2, 253, 161 :urd 2, 253, 163 :urd 4, 253, 165 :urd 2, 253, 169 [MDNSResponder] _readRRAnswerTXT: RDLength:66 :urd 66, 253, 171 [MDNSResponder] _readRRAnswerTXT: Item(14): auth_upload=no [MDNSResponder] _readRRAnswerTXT: Item(23): board="ESP8266_NODEMCU" [MDNSResponder] _readRRAnswerTXT: Soft WDT reset >>>stack>>> ctx: sys sp: 3fffe6b0 end: 3fffffb0 offset: 01b0 3fffe860: 3fffe8ea 00000000 7449203a 40207025 3fffe870: 3fffe8d3 00000044 3ffef86c 40100fac 3fffe880: 402480ad 00000008 3ffef874 0000003a 3fffe890: 3ffee7b4 00000008 3fffe8b0 40204258 3fffe8a0: 00000003 00000012 00000000 4020488c 3fffe8b0: 4e444d5b 73655253 646e6f70 205d7265 3fffe8c0: 6165725f 41525264 6577736e 54585472 3fffe8d0: 7449203a 31286d65 203a2933 5f687373 3fffe8e0: 6f6c7075 6e3d6461 00000a6f 40206ad1 3fffe8f0: 3fffe930 3fffe900 00000008 40215fca 3fffe900: 0000001c 00000005 0000000d 3ffeedd8 3fffe910: 3ffeede5 ff000000 3ffef7ec 4020aada 3fffe920: 4024a4f8 3ffef7ec 3fffe900 3fffe930 3fffe930: 00000042 3ffef7ec 00000005 3ffeedd8 3fffe940: 00000042 3ffee7b4 00000001 4020c5b1 3fffe950: 3ffefedc 0000000d 3ffefeb4 3ffeed64 3fffe960: 3fff051c 00000005 3ffefef6 0000000d 3fffe970: 3ffefec9 0000011c 3fff051c 4020b2c0 3fffe980: 3ffee7b4 3ffeed64 3fff051c 3fff051c 3fffe990: 3ffee7b4 3ffeed64 3fffed28 4020c810 3fffe9a0: 7073650e 36363238 6137392d 08356666 3fffe9b0: 6472615f 6f6e6975 63745f04 6f6c0570 3fffe9c0: 006c6163 00000000 00000000 00000000 3fffe9d0: 00000000 00000000 00000000 00000000 3fffe9e0: 00000000 00000000 00000000 00000000 3fffe9f0: 00000000 00000000 00000000 00000000 3fffea00: 00000000 00000000 00000000 00000000 3fffea10: 00000000 00000000 00000000 00000000 3fffea20: 00000000 00000000 00000000 00000000 3fffea30: 00000000 00000000 00000000 00000000 3fffea40: 00000000 00000000 00000000 00000000 3fffea50: 00000000 00000000 00000000 00000000 3fffea60: 00000000 00000000 00000000 00000000 3fffea70: 00000000 00000000 00000000 00000000 3fffea80: 00000000 00000000 00000000 00000000 3fffea90: 00000000 00000000 00000000 00000000 3fffeaa0: 00100024 00000001 3ffee968 3ffeed64 3fffeab0: 00000001 00001194 3fff0042 40100fac 3fffeac0: 40249428 00000047 3fff051c 40215f5d 3fffead0: 00000001 3ffee7b4 3fff051c 3ffeed64 3fffeae0: 00000002 3ffee7b4 00000000 402089d0 3fffeaf0: 3fffec20 00000004 3fffec20 4021460e 3fffeb00: 7073650e 36363238 6137392d 05356666 3fffeb10: 61636f6c 0000006c 00000000 00000000 3fffeb20: 00000000 00000000 00000000 00000000 3fffeb30: 00000000 00000000 00000000 00000000 3fffeb40: 00000000 00000000 00000000 00000000 3fffeb50: 00000000 00000000 00000000 00000000 3fffeb60: 00000000 00000000 00000000 00000000 3fffeb70: 00000000 00000000 00000000 00000000 3fffeb80: 00000000 00000000 00000000 00000000 3fffeb90: 00000000 00000000 00000000 00000000 3fffeba0: 00000000 00000000 00000000 00000000 3fffebb0: 00000000 00000000 00000000 00000000 3fffebc0: 00000000 00000000 00000000 00000000 3fffebd0: 00000000 00000000 00000000 00000000 3fffebe0: 00000000 00000000 00000000 00000000 3fffebf0: 00000000 00000000 00000000 00000000 3fffec00: 00000016 00ff0024 3f010001 7073650e 3fffec10: 36363238 6137392d 08356666 6472615f 3fffec20: 6f6e6975 63745f04 6f6c0570 006c6163 3fffec30: 00000000 00000000 00000000 00000000 3fffec40: 00000000 00000000 00000000 00000000 3fffec50: 00000000 00000000 00000000 00000000 3fffec60: 00000000 00000000 00000000 00000000 3fffec70: 00000000 00000000 00000000 00000000 3fffec80: 00000000 00000000 00000000 00000000 3fffec90: 00000000 00000000 00000000 00000000 3fffeca0: 00000000 00000000 00000000 00000000 3fffecb0: 00000000 00000000 00000000 00000000 3fffecc0: 00000000 00000000 00000000 00000000 3fffecd0: 00000000 00000000 00000000 00000000 3fffece0: 00000000 00000000 00000000 00000000 3fffecf0: 00000000 00000000 00000000 00000000 3fffed00: 00000000 00000000 00000000 54280024 3fffed10: 3a650000 00000000 00000000 00000100 3fffed20: 00000000 00000000 3fff051c 6501a8c0 3fffed30: 3ffee968 00000002 3ffeff3c 4020bf31 3fffed40: 3fffeb00 00000001 00000004 3fffec0c 3fffed50: 00000001 3ffeed64 3fffedba 3fffed28 3fffed60: 3fffed00 3ffee7b4 3fffedb0 4020ca14 3fffed70: 00000000 00000000 3ffeed64 00002e54 3fffed80: 00000000 3ffee7b4 3ffeed64 40209c7b 3fffed90: 00000000 00000000 00000000 00000000 3fffeda0: 00000000 00000000 00000000 401007f5 3fffedb0: 00000000 00000001 00020002 00000000 3fffedc0: 00000000 3fffedd0 4020e518 fb0000e0 3fffedd0: 4020e518 6501a8c0 3ffefad4 40100fac 3fffede0: 0000bca0 3ffef7ec 00000001 40220340 3fffedf0: 3ffe8a4a 00002e53 3fffee20 3ffeef08 3fffee00: 3ffefeb4 3ffeed64 3ffeff3c 4020a265 3fffee10: 3ffefeb4 00002e53 3ffeed64 4020a2be 3fffee20: 00000000 00000000 3ffe8304 4020e518 3fffee30: 0a01a8c0 3fffee40 00000004 40219e78 3fffee40: 3ffee0f0 3fff03d4 3ffeff3c 4020e1f7 3fffee50: 000014e9 3ffefaec 40228992 401000e1 3fffee60: 3ffefeb4 3fff03d4 3ffeff3c 40203688 3fffee70: 000014e9 3ffef874 3ffee968 3fff03d4 3fffee80: 3fff0406 00000000 3ffeff94 3fff03d4 3fffee90: 3fff0406 00000000 3ffeff94 4021a68c 3fffeea0: 000014e9 3ffeee48 3ffeee48 3ffef564 3fffeeb0: 00000000 40206ad1 00000144 3ffeeef8 3fffeec0: 3ffeee48 3fff03f2 3fff03d4 4021f5c0 3fffeed0: 00000014 3ffeee48 00000127 40220320 3fffeee0: 00000000 0037be4e 3ffee968 3ffef564 3fffeef0: 3fffdc80 3ffef4d4 3ffef80c 3ffef564 3fffef00: 0000000⸮⸮)⸮⸮⸮⸮⸮⸮DHB⸮ SDK:2.2.2-dev(38a443e)/Core:unix-2.6.0-dev=-194000/lwIP:STABLE-2_1_2_RELEASE/glue:1.2-8-g7958710/BearSSL:89454af

Exception Decoder

I've decoded the stack with the Exception Decoder:

 Decoding stack results 0x40207025: uart_write(uart_t*, char const*, size_t) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\uart.cpp line 498 0x40100fac: free(void*) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\umm_malloc\umm_malloc.cpp line 1930 0x40204258: HardwareSerial::write(unsigned char const*, unsigned int) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266/HardwareSerial.h line 158 0x4020488c: Print::printf_P(char const*, ...) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\Print.cpp line 97 0x40206ad1: malloc(size_t) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\heap.cpp line 95 0x40215fca: operator new(unsigned int) at /workdir/repo/gcc/libstdc++-v3/libsupc++/new_op.cc line 52 0x4020aada: esp8266::MDNSImplementation::MDNSResponder::stcMDNSServiceTxt::allocValue(unsigned int) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266mDNS\src\LEAmDNS_Structs.cpp line 164 0x4020c5b1: esp8266::MDNSImplementation::MDNSResponder::_readRRAnswerTXT(esp8266::MDNSImplementation::MDNSResponder::stcMDNS_RRAnswerTXT&, unsigned short) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266mDNS\src\LEAmDNS_Transfer.cpp line 564 0x4020b2c0: esp8266::MDNSImplementation::MDNSResponder::stcMDNS_RRAnswer::stcMDNS_RRAnswer(esp8266::MDNSImplementation::MDNSResponder::_enuAnswerType, esp8266::MDNSImplementation::MDNSResponder::stcMDNS_RRHeader const&, unsigned int) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266mDNS\src\LEAmDNS_Structs.cpp line 892 0x4020c810: esp8266::MDNSImplementation::MDNSResponder::_readRRAnswer(esp8266::MDNSImplementation::MDNSResponder::stcMDNS_RRAnswer*&) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266mDNS\src\LEAmDNS_Transfer.cpp line 435 0x40100fac: free(void*) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\umm_malloc\umm_malloc.cpp line 1930 0x40215f5d: operator delete(void*) at /workdir/repo/gcc/libstdc++-v3/libsupc++/del_op.cc line 48 0x402089d0: esp8266::MDNSImplementation::MDNSResponder::_parseQuery(esp8266::MDNSImplementation::MDNSResponder::stcMDNS_MsgHeader const&) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266mDNS\src\LEAmDNS_Control.cpp line 282 0x4021460e: __ssputs_r at /home/earle/src/esp-quick-toolchain/repo/newlib/newlib/libc/stdio/nano-vfprintf.c line 233 0x4020bf31: esp8266::MDNSImplementation::MDNSResponder::_udpReadBuffer(unsigned char*, unsigned int) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src/include/UdpContext.h line 293 0x4020ca14: esp8266::MDNSImplementation::MDNSResponder::_readMDNSMsgHeader(esp8266::MDNSImplementation::MDNSResponder::stcMDNS_MsgHeader&) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266mDNS\src\LEAmDNS_Transfer.cpp line 1092 0x40209c7b: esp8266::MDNSImplementation::MDNSResponder::_parseMessage() at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266mDNS\src\LEAmDNS_Control.cpp line 129 0x401007f5: _umm_free(void*) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\umm_malloc\umm_malloc.cpp line 1380 0x40100fac: free(void*) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\umm_malloc\umm_malloc.cpp line 1930 0x40220340: mem_free at core/mem.c line 237 0x4020a265: esp8266::MDNSImplementation::MDNSResponder::_process(bool) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266mDNS\src\LEAmDNS_Control.cpp line 76 0x4020a2be: esp8266::MDNSImplementation::MDNSResponder::_callProcess() at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266mDNS\src\LEAmDNS_Helpers.cpp line 176 0x40219e78: pbuf_alloc_LWIP2 at core/pbuf.c line 284 0x4020e1f7: std::_Function_handler (esp8266::MDNSImplementation::MDNSResponder*)> >::_M_invoke(std::_Any_data const&) at c:\users\ruggero\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\2.5.0-3-20ed2b9\xtensa-lx106-elf\include\c++\4.8.2/functional line 2073 0x401000e1: std::function ::operator()() const at c:\users\ruggero\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\2.5.0-3-20ed2b9\xtensa-lx106-elf\include\c++\4.8.2/functional line 2465 0x40203688: UdpContext::_s_recv(void*, udp_pcb*, pbuf*, ip4_addr const*, unsigned short) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src/include/UdpContext.h line 509 0x4021a68c: udp_input at core/udp.c line 404 0x40206ad1: malloc(size_t) at C:\Users\Ruggero\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\heap.cpp line 95 0x4021f5c0: ip4_input at core/ipv4/ip4.c line 1461 0x40220320: mem_malloc at core/mem.c line 210

Can someone try?

EDIT: I've forgotten to say that I've enabled all debug from Arduino IDE's menu

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