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<!DOCTYPE html>
<html class="no-js" lang="en">
<head>
<meta charset="utf-8"/>
<meta content="width=device-width,initial-scale=1" name="viewport"/>
<link href="https://jomjol.github.io/AI-on-the-edge-device-docs/Error-Codes/" rel="canonical"/>
<link href="../New-Releases-Notification/" rel="prev"/>
<link href="../StatusLED-BlinkCodes/" rel="next"/>
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<title>Reduced webinterface (error codes) - AI on the Edge Device</title>
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<a class="md-skip" href="#reduced-webinterface-error-indication-and-tracing">1.
Skip to content
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<header class="md-header md-header--shadow" data-md-component="header">
<nav aria-label="Header" class="md-header__inner md-grid">
<a aria-label="AI on the Edge Device" class="md-header__button md-logo" data-md-component="logo" href=".." title="AI on the Edge Device">
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AI on the Edge Device
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<span class="md-ellipsis">
Reduced webinterface (error codes)
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Getting Started
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Getting Started
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<ul class="md-nav__list" data-md-scrollfix="">
<li class="md-nav__item">
<a class="md-nav__link" href="..">
<span class="md-ellipsis">
Welcome
</span>
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<li class="md-nav__item">
<a class="md-nav__link" href="../Installation/">
<span class="md-ellipsis">
Installation
</span>
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<a class="md-nav__link" href="../initial-setup/">
<span class="md-ellipsis">
Initial Setup
</span>
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<a class="md-nav__link" href="../Hardware-Compatibility/">
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Hardware Compatibility
</span>
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<a class="md-nav__link" href="../Best-Practice/">
<span class="md-ellipsis">
Best Practice
</span>
</a>
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<a class="md-nav__link" href="../FAQs/">
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Frequently Asked Questions
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Configuration
</span>
<span class="md-nav__icon md-icon"></span>
</label>
<nav aria-expanded="false" aria-labelledby="__nav_2_label" class="md-nav" data-md-level="1">
<label class="md-nav__title" for="__nav_2">
<span class="md-nav__icon md-icon"></span>
Configuration
</label>
<ul class="md-nav__list" data-md-scrollfix="">
<li class="md-nav__item">
<a class="md-nav__link" href="../Reference-Image/">
<span class="md-ellipsis">
Reference Image
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Alignment/">
<span class="md-ellipsis">
Alignment References
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../ROI-Configuration/">
<span class="md-ellipsis">
ROIs (Regions of Interest)
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Configuration/">
<span class="md-ellipsis">
Graphical Configuration
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Choosing-the-Model/">
<span class="md-ellipsis">
Model Selection
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../ota/">
<span class="md-ellipsis">
Over-The-Air (OTA) Update
</span>
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</ul>
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Advanced
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Advanced
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<li class="md-nav__item">
<a class="md-nav__link" href="../Parameters/">
<span class="md-ellipsis">
Parameters
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Integration-Home-Assistant/">
<span class="md-ellipsis">
Integration into Home Assistant
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../External-LED/">
<span class="md-ellipsis">
External LED
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../data-logging/">
<span class="md-ellipsis">
Data Logging
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../rolling-installation/">
<span class="md-ellipsis">
Living on the Edge
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Watermeter-specific-analog---digital-transition/">
<span class="md-ellipsis">
Analog/Digital Transition on Water Meters
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../collect-new-images/">
<span class="md-ellipsis">
Collect images to improve the models
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Learn-models-with-your-own-images/">
<span class="md-ellipsis">
Learn a model with your own images
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Correction%20Algorithm/">
<span class="md-ellipsis">
Correction Algorithm
</span>
</a>
</li>
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<a class="md-nav__link" href="../Neural-Network-Types/">
<span class="md-ellipsis">
Neural Network Types
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Additional-Information/">
<span class="md-ellipsis">
Additional Information
</span>
</a>
</li>
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<a class="md-nav__link" href="../New-Releases-Notification/">
<span class="md-ellipsis">
Notification about new Releases
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Troubleshooting
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Troubleshooting
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<ul class="md-nav__list" data-md-scrollfix="">
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<input class="md-nav__toggle md-toggle" id="__toc" type="checkbox"/>
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Reduced webinterface (error codes)
</span>
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<a class="md-nav__link md-nav__link--active" href="./">
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Reduced webinterface (error codes)
</span>
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<nav aria-label="Table of contents" class="md-nav md-nav--secondary">
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Table of contents
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<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix="">
<li class="md-nav__item">
<a class="md-nav__link" href="#critical-errors">1.1
<span class="md-ellipsis">
Critical Errors
</span>
</a>
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<ul class="md-nav__list">
<li class="md-nav__item">
<a class="md-nav__link" href="#0x00000001-psram-bad">1.1.1
<span class="md-ellipsis">
0x00000001 PSRAM bad
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="#0x00000002-heap-too-small">1.1.2
<span class="md-ellipsis">
0x00000002 Heap too small
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="#0x00000004-cam-bad">1.1.3
<span class="md-ellipsis">
0x00000004 Cam bad
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="#0x00000008-sd-card-basic-check-failed">1.1.4
<span class="md-ellipsis">
0x00000008 SD card basic check failed
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="#0x00000010-sd-folder-or-file-presence-check-failed">1.1.5
<span class="md-ellipsis">
0x00000010 SD folder or file presence check failed
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="#non-critical-errors">1.2
<span class="md-ellipsis">
Non-Critical Errors
</span>
</a>
<nav aria-label="Non-Critical Errors" class="md-nav">
<ul class="md-nav__list">
<li class="md-nav__item">
<a class="md-nav__link" href="#0x00000100-cam-framebuffer-bad">1.2.1
<span class="md-ellipsis">
0x00000100 Cam Framebuffer bad
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="#0x00000200-ntp-failed">1.2.2
<span class="md-ellipsis">
0x00000200 NTP failed
</span>
</a>
</li>
</ul>
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</ul>
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<li class="md-nav__item">
<a class="md-nav__link" href="../StatusLED-BlinkCodes/">
<span class="md-ellipsis">
Board status LED (blink codes)
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../WLAN-disconnect-reason/">
<span class="md-ellipsis">
WLAN disconnect reasons
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Error-Debugging/">
<span class="md-ellipsis">
Often observed issues
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Frequent-Reboots/">
<span class="md-ellipsis">
Basic hardware/config issues
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="../Demo-Mode/">
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Demo mode
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Quick Links
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Quick Links
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<a class="md-nav__link" href="https://github.com/jomjol/AI-on-the-edge-device/releases">
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Releases
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<a class="md-nav__link" href="https://jomjol.github.io/AI-on-the-edge-device/index.html">
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Web Installer/Console
</span>
</a>
</li>
<li class="md-nav__item">
<a class="md-nav__link" href="https://github.com/jomjol/AI-on-the-edge-device/issues">
<span class="md-ellipsis">
Create an Issue
</span>
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<a class="md-nav__link" href="https://github.com/jomjol/AI-on-the-edge-device/discussions">
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Join a Discussion
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API's
</span>
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API's
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<a class="md-nav__link" href="../REST-API/">
<span class="md-ellipsis">
REST API
</span>
</a>
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<li class="md-nav__item">
<a class="md-nav__link" href="../MQTT-API/">
<span class="md-ellipsis">
MQTT API
</span>
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<a class="md-nav__link" href="#critical-errors">1.1
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0x00000001 PSRAM bad
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0x00000002 Heap too small
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0x00000004 Cam bad
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0x00000008 SD card basic check failed
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0x00000010 SD folder or file presence check failed
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0x00000100 Cam Framebuffer bad
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<h1 id="reduced-webinterface-error-indication-and-tracing"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.</span> Reduced webinterface (error indication and tracing)</h1>
<p>Whenever an error occurs during boot process which avoids loading of regular processing and regular webinterface, a reduced webinterface gets loaded to have at least some visual feedback and the possibilitiy to figure out the root cause by browsing the logfiles or trigger another OTA update.</p>
<p>The error code(s) get printed with specific error codes. This page lists the possible error codes, their meaning and possible solutions.</p>
<p>Note: Here the error codes are defined in source code: <a href="https://github.com/jomjol/AI-on-the-edge-device/blob/rolling/code/components/jomjol_helper/Helper.h">error codes</a>.</p>
<h2 id="critical-errors"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.1</span> Critical Errors</h2>
<p>Those Errors make the normal operation of the device impossible.
Most likely they are caused by a hardware issue!</p>
<h3 id="0x00000001-psram-bad"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.1.1</span> <code>0x00000001</code> PSRAM bad</h3>
<p>Your device most likely has no PSRAM at all or it is too small (needs to have at least 4 MBytes)!
See <a href="../Hardware-Compatibility">Hardware Compatibility</a>.</p>
<p>Usually the log shows something like this:</p>
<pre><code>psram: PSRAM ID read error: 0xffffffff
cpu_start: Failed to init external RAM!
</code></pre>
<h3 id="0x00000002-heap-too-small"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.1.2</span> <code>0x00000002</code> Heap too small</h3>
<p>The firmware failed to allocate enough memory. This most likely is a consequential error of a bad PSRAM!</p>
<h3 id="0x00000004-cam-bad"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.1.3</span> <code>0x00000004</code> Cam bad</h3>
<p>The attached camera can not be initialized.
This usually is because on of the following reasons:</p>
<ul>
<li>The camera is not supported, see <a href="../Hardware-Compatibility">Hardware Compatibility</a></li>
<li>The camera is not attached properly -&gt; Try to remove and attach it again. Make sure you move the black part enough into the socket!</li>
<li>The camera or the camera cable is damaged</li>
</ul>
<h3 id="0x00000008-sd-card-basic-check-failed"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.1.4</span> <code>0x00000008</code> SD card basic check failed</h3>
<p>One or more basic SD card checks failed.</p>
<p>The following checks are performed during boot sequence:</p>
<ul>
<li>Write a file (sdcard/sdcheck.txt) to SD card with some generic text</li>
<li>Read the written file back</li>
<li>CRC verification</li>
<li>Delete the file</li>
</ul>
<p>Detailed error indication (write, rerad or delete error) can be derived from blinking code of red board status LED. Please refer to <a href="https://jomjol.github.io/AI-on-the-edge-device-docs/StatusLED-BlinkCodes/">StatusLED-BlinkCodes</a></p>
<p>Recommendation: Reformat SD card and check again or try another SD card</p>
<h3 id="0x00000010-sd-folder-or-file-presence-check-failed"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.1.5</span> <code>0x00000010</code> SD folder or file presence check failed</h3>
<p>One or more mandatory folders and/or files are missing on SD card.
To have early indication that SD card is potentially ready for operation, some folder and files, which are mandatory are presence checked. This is not a 100% check and a successful test does not mean everthing is OK.</p>
<p>The following folders / files get checked during boot sequence:</p>
<ul>
<li>/sdcard/config</li>
<li>/sdcard/html</li>
<li>/sdcard/demo --&gt; created automatically in firmware</li>
<li>/sdcard/firmware --&gt; created automatically in firmware</li>
<li>/sdcard/img_tmp --&gt; created automatically in firmware</li>
<li>/sdcard/log --&gt; created automatically in firmware</li>
<li>/sdcard/wlan.ini</li>
<li>/sdcard/config/config.ini</li>
<li>/sdcard/html/index.html</li>
<li>/sdcard/html/ota_page.html</li>
<li>/sdcard/html/log.html</li>
<li>/sdcard/html/common.js</li>
<li>/sdcard/html/version.txt</li>
</ul>
<p>Note: This list might be outdated, see the source code for the latest implementation: <a href="https://github.com/jomjol/AI-on-the-edge-device/blob/rolling/code/components/jomjol_helper/sdcard_check.cpp#L14">SDCardCheckRW()</a></p>
<p>Recommendation: Check logs and / or redo a Over-The-Air Update (OTA Update) to ensure proper SD card structure</p>
<h2 id="non-critical-errors"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.2</span> Non-Critical Errors</h2>
<p>Those Errors can be caused by an error during initialization. It is possible that the error has no impact at all or that a reboot solves it.</p>
<h3 id="0x00000100-cam-framebuffer-bad"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.2.1</span> <code>0x00000100</code> Cam Framebuffer bad</h3>
<p>The firmware was unable to initialize the Camera Framebuffer.
The firmware will continue to work, but other consequential error might arise.
A reboot of the device might help.</p>
<p>This might also be caused by a corrupred SD-Card, see <a href="https://github.com/jomjol/AI-on-the-edge-device/discussions/2390#discussioncomment-6430819">CAM is not working anymore" on init #2390</a></p>
<h3 id="0x00000200-ntp-failed"><span class="enumerate-headings-plugin enumerate-heading-plugin">1.2.2</span> <code>0x00000200</code> NTP failed</h3>
<p>The firmware failed to get the world time from an NTP server. The firmware will continue to work, but has a wrong time.</p>
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