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Question

I try to OTA esp8266 using “ESP8266WebServer”.

I using example “Arduino IDE 2.3.2 ESP8266WebServer/WebUpdate”.

But everytime occur exception 29 when after reset by OTA done..

epc1 is alaways 0x4000e1c3.

Board is “ESP-WROOM-02D”

Try to OTA by my code, sample code in web and Arduino IDE example code.

I expecting OTA done

This is example code.

/*
  To upload through terminal you can use: curl -F "[email protected]" esp8266-webupdate.local/update
*/

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>

#ifndef STASSID
#define STASSID "your-ssid"
#define STAPSK "your-password"
#endif

const char* host = "esp8266-webupdate";
const char* ssid = STASSID;
const char* password = STAPSK;

ESP8266WebServer server(80);
const char* serverIndex = "<form method='POST' action='/update' enctype='multipart/form-data'><input type='file' name='update'><input type='submit' value='Update'></form>";

void setup(void) {
  Serial.begin(115200);
  Serial.println();
  Serial.println("Booting Sketch...");
  WiFi.mode(WIFI_AP_STA);
  WiFi.begin(ssid, password);
  if (WiFi.waitForConnectResult() == WL_CONNECTED) {
    MDNS.begin(host);
    server.on("/", HTTP_GET, []() {
      server.sendHeader("Connection", "close");
      server.send(200, "text/html", serverIndex);
    });
    server.on(
      "/update", HTTP_POST, []() {
        server.sendHeader("Connection", "close");
        server.send(200, "text/plain", (Update.hasError()) ? "FAIL" : "OK");
        ESP.restart();
      },
      []() {
        HTTPUpload& upload = server.upload();
        if (upload.status == UPLOAD_FILE_START) {
          Serial.setDebugOutput(true);
          WiFiUDP::stopAll();
          Serial.printf("Update: %sn", upload.filename.c_str());
          uint32_t maxSketchSpace = (ESP.getFreeSketchSpace() - 0x1000) & 0xFFFFF000;
          if (!Update.begin(maxSketchSpace)) {  // start with max available size
            Update.printError(Serial);
          }
        } else if (upload.status == UPLOAD_FILE_WRITE) {
          if (Update.write(upload.buf, upload.currentSize) != upload.currentSize) {
            Update.printError(Serial);
          }
        } else if (upload.status == UPLOAD_FILE_END) {
          if (Update.end(true)) {  // true to set the size to the current progress
            Serial.printf("Update Success: %unRebooting...n", upload.totalSize);
          } else {
            Update.printError(Serial);
          }
          Serial.setDebugOutput(false);
        }
        yield();
      });
    server.begin();
    MDNS.addService("http", "tcp", 80);

    Serial.printf("Ready! Open http://%s.local in your browsern", host);
  } else {
    Serial.println("WiFi Failed");
  }
}

void loop(void) {
  server.handleClient();
  MDNS.update();
}

And maybe exeception occur in WiFi.mode();

Added stack log

09:39:53.441 -> ets Jan 8 2013,rst cause:1, boot mode:(3,7)

09:39:53.441 ->

09:39:53.441 -> load 0x4010f000, len 3424, room 16

09:39:53.478 -> tail 0

09:39:53.478 -> chksum 0x2e

09:39:53.478 -> load 0x3fff20b8, len 40, room 8

09:39:53.478 -> tail 0

09:39:53.478 -> chksum 0x2b

09:39:53.478 -> csum 0x2b

09:39:53.478 -> v00050ae0

09:39:53.478 -> ~ld

09:39:53.516 -> ��n�r��n|��l�rlb��|r�l�n��n�l`��r�l�l��After OTA

09:39:53.551 -> Booting Sketch…

09:39:53.551 ->

09:39:53.551 -> ————— CUT HERE FOR EXCEPTION DECODER —————

09:39:53.551 ->

09:39:53.551 -> Exception (29):

09:39:53.551 -> epc1=0x4000e1c3 epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000018 depc=0x00000000

09:39:53.551 ->

09:39:53.551 -> >>>stack>>>

09:39:53.551 ->

09:39:53.551 -> ctx: cont

09:39:53.551 -> sp: 3ffffc60 end: 3fffffd0 offset: 0150

09:39:53.551 -> 3ffffdb0: 40228716 00000000 40240000 0000000a

09:39:53.551 -> 3ffffdc0: 00000000 3fff025c 00000020 40100d74

09:39:53.551 -> 3ffffdd0: 4024009e 402359c2 3fff025c 402400c3

09:39:53.583 -> 3ffffde0: 402289e2 3fff025c 3ffefd6c 00000000

09:39:53.583 -> 3ffffdf0: 0000000a 3ffed3c4 3ffed340 3ffed5b0

09:39:53.583 -> 3ffffe00: 00000000 40240783 3ffed340 3ffefd6c

09:39:53.583 -> 3ffffe10: 00000018 00000003 00000003 00000003

09:39:53.583 -> 3ffffe20: 40246e68 00000064 3ffffe58 402240c1

09:39:53.583 -> 3ffffe30: 3ffed340 3ffefd6c 00000003 00000045

09:39:53.619 -> 3ffffe40: 00000064 402240a8 3ffefd6c 00000003

09:39:53.619 -> 3ffffe50: 03a3c9ca 0000b940 00000000 00000000

09:39:53.619 -> 3ffffe60: 00000000 00000000 00000000 00000000

09:39:53.619 -> 3ffffe70: 00000000 00000000 00000000 00000000

09:39:53.619 -> 3ffffe80: 00000000 00000000 00000000 40225417

09:39:53.619 -> 3ffffe90: 3ffefd6c 00000003 00000003 4022545f

09:39:53.619 -> 3ffffea0: 00000000 3ffed3c4 3ffee238 00000000

09:39:53.619 -> 3ffffeb0: 40243be1 00000003 00000003 00000003

09:39:53.619 -> 3ffffec0: 40243d43 00000003 00000003 40243cf7

09:39:53.655 -> 3ffffed0: 00000003 00000000 00000000 3ffef7ac

09:39:53.655 -> 3ffffee0: 40243e1a 3ffee7f1 3ffe8e6c 4023c76c

09:39:53.655 -> 3ffffef0: 402039a6 3ffee7f1 0001c200 00000000

09:39:53.655 -> 3fffff00: 2d505345 30343330 00003942 00000000

09:39:53.655 -> 3fffff10: 00000000 00000000 00000000 00000000

09:39:53.655 -> 3fffff20: 3ffe8800 fffffffc 3ffee89c 40209d28

09:39:53.655 -> 3fffff30: 40209c90 3ffe8868 3ffee89c 3ffeea78

09:39:53.655 -> 3fffff40: 3fffdad0 00000011 3ffee89c 3ffeea78

09:39:53.689 -> 3fffff50: 3fffdad0 3ffee7f0 3ffee89c 4020187a

09:39:53.689 -> 3fffff60: feefeffe feefeffe feefeffe feefeffe

09:39:53.689 -> 3fffff70: feefeffe feefeffe feefeffe feefeffe

09:39:53.689 -> 3fffff80: feefeffe feefeffe feefeffe feefeffe

09:39:53.689 -> 3fffff90: feefeffe feefeffe feefeffe feefeffe

09:39:53.689 -> 3fffffa0: feefeffe feefeffe feefeffe 3ffeea78

09:39:53.723 -> 3fffffb0: 3fffdad0 00000000 3ffeea4c 4020caa8

09:39:53.723 -> 3fffffc0: feefeffe feefeffe 3fffdab0 40100361

09:39:53.723 -> <<<stack<<<

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Danh mục

ESP8266 WebServer Update has exception 29