OTA starts but fails, esp unreachable

[supersjimmie]

Sketch uses 314,161 bytes (30%) of program storage space. Maximum is 1,044,464 bytes.
Global variables use 39,992 bytes (48%) of dynamic memory, leaving 41,928 bytes for local variables. Maximum is 81,920 bytes.
Uploading...........................................................................................................................................................................................................................
18:50:59 [ERROR]: No Result!

Basic Infos

I have a laptop with Windows 10 in the same IP network segment and connected to the same wifi AP.
I do see the esp under Tools - Port.

Hardware

Hardware: NodeMCU v2
Core Version: 2.3.0

Description

Upload starts but after a couple of seconds it stops.
Then [ERROR]: No Result!

Before, and partially during the upload I can ping the esp, after a few seconds it's no more pingable and it never comes back.

Settings in IDE

Module: NodeMCU 1.0
Flash Size: 4MB
CPU Frequency: 80Mhz
Upload Using: OTA / SERIAL
Reset Method: nodemcu

Sketch

Stripped to the relevant parts, offcourse I connect to wifi and work with sensors and stuff.

#include <ESP8266mDNS.h>
#include <WiFiUdp.h>
#include <ArduinoOTA.h>

void setup() {
  setupOTA();
}

void loop() {
  ArduinoOTA.handle();
}

void setupOTA() {
  ArduinoOTA.setHostname("SlimmeMeter");
  ArduinoOTA.onStart([]() {
    String type;
    if (ArduinoOTA.getCommand() == U_FLASH)
      type = "sketch";
    else // U_SPIFFS
      type = "filesystem";

    // NOTE: if updating SPIFFS this would be the place to unmount SPIFFS using SPIFFS.end()
    Serial.println("Start updating " + type);
  });
  ArduinoOTA.onEnd([]() {
    Serial.println(F("\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(F("OTA Ready"));
}

Debug Messages

Uploading...........................................................................................................................................................................................................................
18:50:59 [ERROR]: No Result!

[DanielHaubjergVestergaard]

I have the same problem with upload OTA to my WeMos D1

Authenticating...OK
Uploading.......................................................................
................................................................................
......................
19:25:36 [ERROR]: No Result!

[supersjimmie]

@DanielHaubjergVestergaard Solved here, but I don't know why/how.
I enabled debugging to see what goes wrong and now it just works!
Still 10:14:07 [ERROR]: No Result! but then it boots and works.
Can you try that too, just to see?

[supersjimmie]

So now I think I know what's the difference between when it worked and when not.
If I keep usb connected (for logging) the esp boots fine, without usb connected it fails somewhere (but I cannot see where/why).

My module is powered externally with 5V on it's Vin pin and it normally works fine with that.
Even after a reset, or even after reconnecting usb and then a reset, it still won't work.
So it seems that someting fails during the ota process if no usb connected?

[me-no-dev]

what do you get in Serial when it fails? Or do you say that it will not fail if Serial is attached?
Also are you using 2.3.0 or git version?

[me-no-dev]

I just merged this, which may help with your issues.

[supersjimmie]

@me-no-dev as said, with serial connected it succeeds so I cannot see what happens when it fails.
That makes it very hard to figure out what happens when it fails. :(

I will download your modified ArduinoOTA.cpp/h files to try.

[supersjimmie]

I got 889775c and uploaded my sketch again (over serial) to make it running with those latest changes.
Then I tried an OTA again.
Slight difference it that I don't get the [ERROR] No result anymore, but it's still unreachable after OTA.
Then I only connected serial (which also causes a reset) and it boots fine.

Uploaded again over OTA, again dead.
Then I enabled debugging for OTA+Updater, uploaded over Serial, connected Putty to Serial, did an OTA update, and all goes fine.

sleep disable
[begin] roundedSize: 0x0004F000 (323584)
[begin] updateEndAddress: 0x00100000 (1048576)
[begin] currentSketchSize: 0x0004F000 (323584)
[begin] _startAddress: 0x000B1000 (724992)
[begin] _currentAddress: 0x000B1000 (724992)
[begin] _size: 0x0004E510 (320784)
Start updating sketch
MD5 Success:
f919aef93f95b7e75e77a26025b55505

Staged: address:0x000B1000, size:0x0004E510

Update Success

End
Rebooting...
state: 5 -> 0 (0)
rm 0
pm close 7
del if0
usl

ets Jan 8 2013,rst cause:2, boot mode:(3,6)

load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
v00000000
@cp:0
ld
Start.

[supersjimmie]

btw, during the last SUCCESS OTA, the IDE says:
Uploading............................................................................................................................................................................................................................An error occurred while uploading the sketch

[me-no-dev]

is it possible that you have tested the following way:

• Uploaded the sketch over Serial
• Tried OTA without resetting the ESP manually first (because after Serial upload, if not manually reset, ESP.restart() will actually hang the ESP)
• You uploaded with debug enabled
• You connected to the ESP after the upload with putty which as you said reset the ESP
• Tested OTA and everything went well

If this is what you did, the fix and explanation is in the second point :)

[supersjimmie]

No it is not a fix, to make it short: OTA only works with Serial connected.
Which is, offcourse, pretty useless, because I want OTA without Serial connected...
In any way and any order that I tried, OTA does not work without Serial connected.

[me-no-dev]

I use OTA daily :) I know it's working ;)
Serial Upload -> Manual Reset (push reset on the ESP) -> Wait for it to boot -> do OTA

[supersjimmie]

Yes I believe you that it works with you.
But as with more issues, there may be some cause why it doesn't always work everywhere else. ;)

[me-no-dev]

Did you try the exact steps above? It's really, really important to manually reset after Serial upload for OTA to work!

[supersjimmie]

Ah, I understand., thanks for clarifying.
No I did not. But my esp always automatically reboots after a Serial upload, that's not enough then? I think I can recall some kind of issue with that restart() now...
(will try later in the evening)

[igrr]

ESP doesn't automatically reboot after Serial upload. It starts running program directly. So if you are using OTA function you need to do a manual restart (press reset button or toggle power).
Depending on how you have DTR and RTS wired from USB-Serial converter to the ESP, it may be resetting each time you open serial terminal window.