Arduino: OTA starts but fails, esp unreachable

Created on 25 Aug 2016 · 22Comments · Source: esp8266/Arduino

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!

Source

supersjimmie

Most helpful comment

The Wiki page for the ArduinoOTA library doesn't make mention of the need for a hard reset after serial upload of an OTA-containing sketch.
None of the third-party blogs on the subject do either.
Seems like an important step (it fixed the problem for me), worth adding to the docs.

glyndon on 16 Jan 2017

👍2 ❤1 🎉1

All 22 comments

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

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

DanielHaubjergVestergaard on 26 Aug 2016

@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 on 27 Aug 2016

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?

supersjimmie on 27 Aug 2016

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 on 27 Aug 2016

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

me-no-dev on 27 Aug 2016

@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 on 28 Aug 2016

I got https://github.com/esp8266/Arduino/commit/889775c6fe3c23a390cfbb0b57e6de371292a361 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 on 28 Aug 2016

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

supersjimmie on 28 Aug 2016

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 :)

me-no-dev on 28 Aug 2016

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.