03 Nov 02:48

3e75883

Latest

Release v5.0.0

Release Date: 2025-11-02
Release Type: Major Enhancement Release
Previous Version: v4.3.1

🎯 Overview

Version 5.0.0 represents a significant advancement in system responsiveness, user experience, and code quality. This release introduces TFT display enhancements with QR code support, non-blocking WiFi operations, structured logging framework, and FreeRTOS task improvements that collectively transform the device into a truly professional-grade WiFi utility.

🌟 Highlights

🔗 QR Code Sharing: Instant WiFi credential sharing via scannable QR codes in Station mode
⚡ Non-Blocking Operations: WiFi connections no longer freeze the device for 10 seconds
📋 Structured Logging: Professional logging system with severity levels and component tags
📊 Enhanced Status: Comprehensive network information including signal quality and uptime
🚀 Task Architecture: Dedicated FreeRTOS task for WiFi command processing
🌐 Web Server Speed: 10x faster response times with optimized main loop
🔧 Critical Fixes: Resolved connection timing, TFT updates, and web server issues

📦 What's New

🔗 QR Code Support for Station Mode

Transform your ESP32 into a WiFi credential sharing device with automatic QR code generation.

Features

Automatic Generation: QR code created instantly when connected to WiFi
Standard Format: Uses WIFI:T:WPA;S:;P:;; format for universal compatibility
Conditional Display: Shows QR code ONLY when actively connected
Dynamic Updates: Automatically clears on disconnection, reappears on reconnection
Mobile Optimized: White border and 4-pixel modules for better camera recognition
Centered Layout: Professional positioning on TFT display
Both Modes: Consistent experience in AP and Station modes

Use Cases

Guest WiFi Sharing: Show QR code on device for easy guest access
Network Documentation: Visual reference for WiFi credentials
IoT Provisioning: Quick setup for other IoT devices
Office Setup: Share network access without revealing password verbally

Technical Implementation

// QR code generated with password tracking
static String connectingPassword = "";

// Conditional display based on WiFi status
if (WiFi.status() == WL_CONNECTED) {
    String qrData = "WIFI:T:WPA;S:" + ssid + ";P:" + password + ";;";
    drawQRCode(qrData, offsetX, offsetY);
}

Memory Impact: +1,740 bytes Flash, +64 bytes RAM

⚡ Non-Blocking WiFi Connection

Revolutionize user experience with truly asynchronous WiFi operations.

Problem Solved

Before: Device completely frozen for 10 seconds during WiFi connection attempts

// OLD: Blocking loop
while (WiFi.status() != WL_CONNECTED && attempts < 100) {
    vTaskDelay(10 / portTICK_PERIOD_MS);  // BLOCKS HERE
    attempts++;
}

After: Device remains fully responsive during connection

// NEW: Non-blocking monitoring
void connectToNetwork(String ssid, String password) {
    WiFi.begin(ssid.c_str(), password.c_str());
    isConnecting = true;  // Returns immediately
}

void handleWiFiConnection() {
    if (!isConnecting) return;  // Called from main loop
    // Check status, update UI, handle timeout
}

Features

Dual Function Design: connectToNetwork() initiates, handleWiFiConnection() monitors
State Tracking: Connection SSID, password, start time, and attempt count
Visual Feedback: Progress dots every 100ms without blocking
10-Second Timeout: Automatic detection with clear error messages
Preserved Features: All LED indicators, TFT updates, web server auto-start
FreeRTOS Compatible: Proper task delays for cooperative multitasking

Benefits

Main loop executes every 10ms (was blocked for 10,000ms)
Web server remains responsive during connection
TFT display updates continue smoothly
Command interface stays interactive
Other tasks (display, monitoring) run concurrently

Performance Impact: 1000x improvement in responsiveness during connection

📋 Structured Logging System

Professional-grade logging framework replacing ad-hoc Serial.print statements.

Features

Four Severity Levels

LOG_DEBUG(TAG_WIFI, "Detailed debugging info");    // Development
LOG_INFO(TAG_WIFI, "Normal operations");           // Production
LOG_WARN(TAG_WIFI, "Warning conditions");          // Attention needed
LOG_ERROR(TAG_WIFI, "Error conditions");           // Critical issues

Component Tags

TAG_WIFI: WiFi operations and connections
TAG_AP: Access Point mode operations
TAG_WEB: Web server and HTTP requests
TAG_TASK: FreeRTOS task management

System-Wide Migration

73 statements replaced across wifi_manager.cpp, wifi_task.cpp, web_server.cpp
Consistent formatting with timestamps and severity
Runtime configuration for log level filtering
User interface preserved (connection dots, prompts)

Examples

// Before
Serial.println("Connected to network");
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());

// After
LOG_INFO(TAG_WIFI, "Connected to '%s'", WiFi.SSID().c_str());
LOG_INFO(TAG_WIFI, "IP Address: %s", WiFi.localIP().toString().c_str());
LOG_DEBUG(TAG_WIFI, "Gateway: %s", WiFi.gatewayIP().toString().c_str());

Benefits

Easier Debugging: Filter logs by component or severity
Production Ready: Disable debug logs without code changes
Consistent Format: Timestamps and severity on every message
Professional: Clean, structured output for troubleshooting

Code Quality Impact: Improved maintainability and debugging capability

📊 Enhanced Status Command

Comprehensive network diagnostics at your fingertips.

New Information Displayed

Connection Status: Clear Connected/Not Connected indicator
Network Details:
- SSID (network name)
- IP address, subnet mask, gateway
- DNS servers (primary and secondary)
- MAC address
Signal Quality:
- RSSI in dBm (-30 to -90+)
- Quality percentage (0-100%)
- Classification (Excellent/Good/Fair/Weak)
- Emoji signal bars (🟢🟢🟢🟢 to 🔴🔴🔴⚪)
Connection Info:
- WiFi channel (1-13 for 2.4GHz)
- Uptime in HH:MM:SS format
Troubleshooting:
- Detailed WiFi status codes when disconnected
- Connection history

Example Output

Station Mode Status:
─────────────────────────────────────
Status: ✓ Connected
SSID: MyHomeNetwork
IP Address: 192.168.1.100
Subnet: 255.255.255.0
Gateway: 192.168.1.1
DNS: 192.168.1.1
MAC: A4:CF:12:AB:CD:EF

Signal Strength: -55 dBm
Quality: 🟢🟢🟢🟢 Excellent (90%)
Channel: 6 (2.4GHz)
Uptime: 01:23:45
─────────────────────────────────────

User Experience Impact: Complete network diagnostics in one command

🚀 FreeRTOS Task Architecture

Dedicated WiFi command processing with asynchronous execution.

WiFi Command Task

xTaskCreatePinnedToCore(
    wifiCommandTask,     // Task function
    "WiFi_Command",      // Task name
    8192,                // Stack size (8KB)
    nullptr,             // Parameters
    2,                   // Priority (higher than display)
    &wifiTaskHandle,     // Task handle
    1                    // Core 1 (app core)
);

Features

Command Queue: Non-blocking command submission
Proper Sequencing: Stop → Start Mode → Connect flow
Background Processing: Commands execute without main loop blocking
Error Handling: Graceful failure recovery
Priority Management: Higher than display, lower than network stack

Benefits

Commands processed asynchronously
Main loop never blocks waiting for WiFi operations
Improved reliability with proper state management
Better error reporting

Architecture Impact: Professional multi-tasking design

🌐 Web Server Improvements

Dramatically improved web interface responsiveness.

Performance Optimizations

Main Loop Speed

Before: 100ms delay between iterations (10 Hz)
After: 10ms delay between iterations (100 Hz)
Improvement: 10x faster loop execution

Web Server Handling

Before: handleClient() called 10 times/second
After: handleClient() called 100 times/second
Result: Near-instant HTTP response times

CPU Sharing

handleWebServerRequests();
yield();  // Allow other tasks to run

Bug Fixes

Station Mode Web Server: Now starts on all board variants
Conditional Compilation: Fixed USE_NEOPIXEL → USE_WEBSERVER
HTTP Pending: Eliminated "stuck at pending" requests
Initialization: Added 100ms delay after webServer->begin()

Impact

HTTP requests respond instantly (no delays)
Web interface feels desktop-app responsive
nmap confirms port 80 open and responsive
Works on all boards (esp32dev, TFT, Reverse TFT)

User Experience: Web interface now professional-grade

🔧 Bug Fixes

Critical Fixes

WiFi Connection Timing

Issue: Device reported "Connection Failed" even with valid credentials
Root Cause: Missing delay in connection loop, WiFi.begin() is asynchronous
Fix: Added delay(500) → vTaskDelay(500 / portTICK_PERIOD_MS)
Impact: Reliable connections every time

TFT Display Updates

Issue: TFT not updating during Station mode connection
Root Cause: Missing status messages in connection flow
Fix: Added sendTFTStatus() calls at appropriate points
Impact: Real-time connection status on display

Mode Switching Sequence

Issue: Connection attem...

Contributors

arunkumar-mourougappane

Assets 6

26 Oct 01:28

github-actions

v4.3.1

1ba496d

ESP32 WiFi Utility v4.3.1

ESP32 WiFi Utility v4.3.1 - Release Notes

Release Date: October 25, 2025
Release Type: Documentation Update (Patch Release)
Status: Stable

📚 Overview

Version 4.3.1 is a documentation-focused patch release that provides comprehensive Wiki documentation for the features introduced in v4.3.0. This release significantly enhances user experience by providing detailed guides, API references, and best practices for the Port Scanner and Signal Strength Monitor features.

No code changes - All functionality from v4.3.0 remains stable and unchanged.

🎯 Release Highlights

New Wiki Documentation

Port Scanner Documentation (1,400+ lines)

Complete guide covering network security auditing capabilities:

Scanning Fundamentals: Port concepts, TCP connections, security considerations
Scan Types: Common (16 ports), Well-Known (1-1024), Custom Range, All Ports (65,535)
Service Identification: 25+ automatically identified services (HTTP, SSH, MySQL, RDP, etc.)
Web Interface: Detailed UI documentation with screenshots and workflows
API Reference: RESTful endpoints with JavaScript integration examples
Use Cases: Router security, web server audit, database checks, IoT discovery, network inventory
Security: Legal considerations, ethical guidelines, responsible disclosure
Troubleshooting: Common issues and solutions

Signal Strength Monitor Documentation (1,100+ lines)

Complete guide covering WiFi signal monitoring and optimization:

RSSI Fundamentals: Signal strength interpretation, quality ratings, dBm explained
Serial Commands: signal show/scan/monitor with detailed examples
Web Interface: Auto-refreshing displays, color-coded meters, graphical bars
Use Cases: Troubleshooting, device positioning, site surveys, stability monitoring
API Integration: JSON endpoints with JavaScript examples
Best Practices: Optimization tips, measurement accuracy, environmental factors
Technical Details: Performance characteristics, memory usage, scanning methodology

Updated Wiki Pages

Enhanced Navigation

Home.md: Added Port Scanner and Signal Strength Monitor to main navigation
_Sidebar.md: Updated features section with new tool links
Web-Configuration-Interface.md: Updated from 9 to 10 pages, added API endpoints
Command-Reference.md: Added signal monitoring commands with examples
Quick-Start-Guide.md: Added new features to essential features list

📊 What's Included

Documentation Statistics

Metric	Count
New Wiki Pages	2
Total Lines Added	2,500+
Updated Wiki Pages	5
API Examples	15+
Use Cases Documented	10+
Service Identifications	25+
Commands Documented	8+

Content Breakdown

Port Scanner Documentation:

Overview and fundamentals: 200 lines
Scan types and features: 300 lines
Web interface guide: 200 lines
API integration: 150 lines
Use cases: 250 lines
Security considerations: 200 lines
Technical details: 100 lines

Signal Strength Monitor Documentation:

RSSI fundamentals: 150 lines
Serial commands: 250 lines
Web interface guide: 150 lines
Use cases: 200 lines
API integration: 100 lines
Best practices: 150 lines
Troubleshooting: 100 lines

🔧 Technical Changes

Version Updates

Updated platformio.ini version strings: 4.3.0 → 4.3.1
All 6 build environments updated (esp32dev, adafruit variants, test environments)

Documentation Cleanup

Removed outdated files:

RELEASE_NOTES_V4.3.0.md - Superseded by Wiki
RELEASE_SUMMARY.txt - Consolidated into CHANGELOG
docs/MIGRATION_GUIDE_V4.2.0.md - Integrated into Wiki
docs/RELEASE_NOTES_V4.2.0.md - Consolidated
docs/technical/CODE_IMPROVEMENTS_V4.2.0.md - Archived

Rationale: Migrated to structured Wiki format for better organization and discoverability

📖 Feature Documentation Summary

Port Scanner Features (v4.3.0)

Web Interface: http://<device-ip>/portscan

Scan Types:

Common Ports (16 ports, ~30 seconds) - Recommended for quick checks
Well-Known Ports (1-1024, ~15 minutes) - Standard security audit
Custom Range (User-defined, variable time) - Targeted investigation
All Ports (1-65535, ~10 hours) - Comprehensive audit

Key Features:

Real-time progress tracking with percentage display
Automatic service identification (HTTP, HTTPS, SSH, FTP, MySQL, etc.)
Background scanning with non-blocking operation
Purple gradient themed UI
Security warnings and legal disclaimers

API Endpoints:

GET /portscan/start?ip=<target>&type=<scan_type> - Start scan
GET /portscan/stop - Stop active scan
GET /portscan/status - Get scan progress (JSON)
GET /portscan/api?gateway=1 - Get gateway IP

Security Considerations:

Only scan devices you own or have permission
Unauthorized scanning may violate laws (CFAA, Computer Misuse Act)
Network impact considerations
Responsible disclosure guidelines

Signal Strength Monitor Features (v4.2.1)

Web Interface: http://<device-ip>/signal

Capabilities:

Real-time RSSI monitoring of connected network
Nearby networks signal scanning
Auto-refresh every 3 seconds
Color-coded quality indicators (Green/Yellow/Red)
Quality percentage and ratings

Serial Commands:

signal show      # Display current connection signal
signal scan      # Scan nearby networks
signal monitor   # Continuous monitoring mode

RSSI Reference:

-30 to -50 dBm: Excellent (100%)
-50 to -60 dBm: Good (80-100%)
-60 to -70 dBm: Fair (60-80%)
-70 to -80 dBm: Weak (40-60%)
Below -80 dBm: Very Weak (<40%)

API Endpoints:

GET /signal/api?current=1 - Get current signal (JSON)
GET /signal/api?scan=1 - Scan nearby networks (JSON)

Use Cases:

Troubleshooting connection issues
Finding optimal device/router placement
Site surveys for coverage mapping
Monitoring connection stability

🚀 Getting Started

For New Users

Install v4.3.1: Flash firmware to ESP32 device
Access Web Interface: Connect to device and navigate to web UI
Read Documentation: Visit GitHub Wiki for comprehensive guides
Try Features: Start with Quick Start Guide tutorials

For Existing Users (Upgrading from v4.3.0)

No migration required - This is a documentation-only release.

What to do:

Update firmware to v4.3.1 (optional, no functional changes)
Review new Wiki documentation for enhanced feature understanding
Explore API examples for integration opportunities
Check troubleshooting guides for any existing issues

What stays the same:

All features and functionality
Configuration settings
API endpoints (only documented, not changed)
Web interface behavior
Performance characteristics

📚 Documentation Access

GitHub Wiki

Visit the ESP32 WiFi Utility Wiki for:

New Pages:

Updated Pages:

Repository Documentation

CHANGELOG.md: Complete version history
README.md: Project overview and quick start
docs/: Technical documentation and guides

🔗 Links and Resources

Download

GitHub Release: v4.3.1
Source Code: Repository

Support

Issues: GitHub Issues
Discussions: GitHub Discussions
Wiki: Documentation

Community

Contributing: See CONTRIBUTING.md for guidelines
Code of Conduct: See CODE_OF_CONDUCT.md
License: MIT License

🎓 Key Improvements

User Experience

✅ Comprehensive Documentation: 2,500+ lines of detailed guides
✅ Clear Navigation: Enhanced Wiki structure with cross-referencing
✅ API Examples: JavaScript integration samples for all endpoints
✅ Use Cases: Real-world scenarios and workflows
✅ Troubleshooting: Common issues with step-by-step solutions

Developer Experience

✅ API Reference: Complete endpoint documentation
✅ Code Examples: Integration patterns and best practices
✅ Technical Details: Implementation specifics and performance data
✅ Security Guidelines: Legal and ethical considerations

Documentation Quality

✅ Professional Formatting: Tables, code blocks, visual indicators
✅ Consistent Styling: Unified approach across all pages
✅ Mobile-Friendly: Responsive documentation layout
✅ Searchable: Well-structured content for easy discovery

📋 Complete Feature List (Cumulative)

v4.3.1 + v4.3.0 Features...

Assets 6

26 Oct 01:08

github-actions

v4.3.0

8a6081b

ESP32 WiFi Utility v4.3.0

ESP32 WiFi Utility Suite - Release Notes v4.3.0

Release Date: October 25, 2025
Version: 4.3.0
Type: Major Feature Release

🎉 Release Highlights

Version 4.3.0 introduces four major network analysis tools that transform the ESP32 WiFi Utility into a comprehensive network diagnostics platform:

📶 Signal Strength Monitor - Real-time WiFi signal monitoring with auto-scan
🔒 Port Scanner - Network security auditing and service discovery
📊 Channel Graph - Visual spectrum analysis with interactive charts
📱 TFT Display Support - Built-in screen integration for Feather boards

🚀 New Features

1. Signal Strength Monitor

Real-time WiFi signal analysis with automated scanning

Core Features

Live Signal Monitoring: Current connection strength with 3-second auto-refresh
Nearby Networks Scanner: Comprehensive scan with signal quality indicators
Auto-Scan Mode: Configurable intervals (5, 10, 15, 30, 60 seconds)
Hidden Network Detection: Identifies hidden SSIDs as <Hidden Network>
Visual Quality Indicators: Color-coded circles (🟢🟡🟠🔴)
RSSI to Quality Conversion: Automatic percentage calculation (0-100%)
Quality Classifications: Excellent/Good/Fair/Weak/Very Weak
Non-Blocking Updates: Page content remains visible during scans
Real-Time Countdown: Shows time until next automatic scan

Web Interface

URL: http://<device-ip>/signal
Professional UI: Cyan gradient theme
Mobile Responsive: Optimized for all screen sizes
API Endpoints:
- /signal - Main monitoring page
- /signal/api?current=1 - Get current signal (JSON)
- /signal/api?scan=1 - Scan networks (JSON)

Integration

Added to Analysis Dashboard with dedicated card
Accessible from navigation dropdown menu
Quick Actions button for one-click access

Use Cases

Monitor connection quality in real-time
Track signal changes during troubleshooting
Identify best network in range
Detect hidden networks
Automated network monitoring

2. Port Scanner

Comprehensive network security auditing tool

Scan Types

1. Common Ports (Fast) - ~20-30 seconds

16 most commonly used ports
Quick security assessment
Ideal for routine checks
Ports: FTP, SSH, HTTP, HTTPS, SMTP, MySQL, RDP, etc.

2. Well-Known Ports - ~10-30 minutes

Ports 1-1024
Standard IANA services
Comprehensive audit
Enterprise security scanning

3. Custom Range - Variable duration

User-defined port range
Targeted analysis
Flexible scanning
Example: Scan ports 8000-9000

4. All Ports (Comprehensive) - ~8-12 hours

Ports 1-65535
Complete security audit
Deep analysis
Full port coverage

Service Identification

Automatically identifies 25+ common services:

Web: HTTP (80), HTTPS (443), HTTP-Alt (8080)
Remote Access: SSH (22), Telnet (23), RDP (3389), VNC (5900)
Email: SMTP (25), POP3 (110), IMAP (143)
Databases: MySQL (3306), PostgreSQL (5432), MongoDB (27017), Redis (6379)
File Transfer: FTP (21), SMB (445)
And more: DNS, Oracle, MSSQL, Printer services

Features

Real-Time Progress: Animated progress bar with percentage
Background Scanning: Non-blocking TCP connection tests
Results Display: Tabular format (Port/Service/Status)
Gateway Detection: Auto-populated target IP
Security Warnings: Legal disclaimers and authorization reminders
Professional UI: Purple gradient theme

Web Interface

URL: http://<device-ip>/portscan
API Endpoints:
- /portscan/start - Start scan with parameters
- /portscan/stop - Stop active scan
- /portscan/status - Get scan progress (JSON)
- /portscan/api - Helper endpoints

Integration

Added to Analysis Dashboard with purple card
Navigation dropdown access
Quick Actions integration
Last scan results display

Security Features

Clear legal warnings
Authorization requirements
Network impact notices
Responsible use guidelines
Ethical scanning practices

3. Channel Graph Visualization

Interactive WiFi spectrum analysis with HTML5 Canvas

Visual Features

Bar Chart Display:

14 vertical bars for channels 1-14
Bar height = congestion level (0-100%)
Color-coded visualization
Network count overlays

Color-Coded Congestion:

🟢 Green (0-40%): Low congestion - Excellent choice
🟡 Yellow (40-70%): Medium congestion - Acceptable
🔴 Red (70-100%): High congestion - Avoid

Professional Graph Elements:

Grid lines for easy reading
Labeled axes (X: Channels, Y: Congestion %)
Axis titles and descriptions
Interactive legend
Recommended channel markers (⭐)

Features

Best Channel Detection: Automatic identification
Non-Overlapping Indicators: Highlights channels 1, 6, 11
Network Count Display: Shows networks per channel
Responsive Design: Adapts to screen size
Window Resize Support: Redraws on window change
Educational Content: Explains channel overlap

Technical Implementation

Canvas Size: 1000x400px (responsive)
Client-Side Rendering: Pure JavaScript
Real-Time Data: From channel analyzer
No External Dependencies: Self-contained

Web Interface

URL: http://<device-ip>/channel/graph
Access: Button on Channel Analysis page
Integration: Analysis Dashboard link

Use Cases

Identify optimal WiFi channel
Visual spectrum analysis
Interference detection
Router channel selection
Multi-AP deployment planning

Educational Value

Understanding channel overlap
2.4GHz spectrum visualization
Non-overlapping channels (1, 6, 11)
Congestion impact on performance
Best practices for channel selection

4. TFT Display Support

Built-in screen integration for Adafruit Feather ESP32-S3 boards

Hardware Support

Adafruit Feather ESP32-S3 TFT
Adafruit Feather ESP32-S3 Reverse TFT
Display: 135x240 pixels, ST7789 driver
Auto-Detection: Automatically uses TFT when available

AP Mode Display

Visual Elements:

🟢 Green "AP Mode" text indicator
QR code for instant WiFi connection
SSID display (truncated if long)
Password display
AP IP address

Features:

Scan QR with mobile device to connect
Compact layout optimized for small screen
Clear, readable information
Professional styling

Station Mode Display

Visual Elements:

🔵 Blue "Station Mode" text indicator
Connection status with visual feedback
Connected network SSID
Local IP address
Real-time signal strength (RSSI in dBm)
Color-coded signal quality indicator
Visual signal quality bar graph

Signal Quality Colors:

🟢 Green: Strong signal (-60 dBm or better)
🟡 Yellow: Medium signal (-60 to -70 dBm)
🔴 Red: Weak signal (below -70 dBm)

Signal Quality Bar:

Horizontal progress bar (0-100%)
Calculated from RSSI value
Visual representation of connection quality
Updates in real-time

Features

Dynamic Mode Detection: Uses esp_wifi_get_mode()
Automatic Updates: Displays appropriate mode info
QR Code Generation: Instant connection via scan
Signal Visualization: Live signal strength tracking
Compact Layout: Optimized for 135x240 screen

Libraries Added

Adafruit ST7735 and ST7789 Library @^1.10.0
Adafruit GFX Library @^1.11.0

🌐 Web Interface Enhancements

Analysis Dashboard Updates

New Cards Added:

Signal Monitor Card (Cyan gradient):
- Current signal strength display
- Last scan timestamp
- Quality indicator
- Quick access button
Port Scanner Card (Purple gradient):
- Last scan results summary
- Open ports count
- Security status
- Quick launch button

Enhanced Features:

Channel Graph button on Channel Analysis page
Updated navigation dropdown with all new tools
Quick Actions section with one-click access
Tips section with tool guidance
Consistent gradient styling throughout

Navigation Improvements

Analysis Dropdown Menu now includes:

📊 Dashboard
📶 Signal (NEW)
🔒 Port Scanner (NEW)
⚡ iPerf
📉 Latency
📡 Channel (with Graph option)

Quick Actions Section:

One-click access to all analysis tools
Gradient-styled buttons
Icon indicators
Mobile-optimized

📚 Documentation

New Documentation Files

docs/SIGNAL_STRENGTH_MONITOR.md (~400 lines)
- Complete signal monitor guide
- Features and usage
- API endpoints
- Configuration options
- Troubleshooting
docs/PORT_SCANNER.md (~476 lines)
- Comprehensive port scanner documentation
- Scan types and service identification
- Security considerations
- Usage examples
- Legal and ethical guidelines
docs/CHANNEL_GRAPH.md (~595 lines)
- Visual spectrum analysis guide
- Graph interpretation
- Channel selection best practices
- Technical implementation details
- Educational content on WiFi spectrum

Updated Documentation

README.md: Added v4.3.0 features section (~150 lines)
CHANGELOG.md: Complete v4.3.0 release notes (~200 lines)
Version badges: Updated to 4.3.0

🔧 Technical Details

New Source Files

Signal Monitor:
- include/signal_monitor.h
- src/signal_monitor.cpp
Port Scanner:
- include/port_scanner.h
- src/port_scanner.cpp
TFT Display:
- include/tft_display.h
- src/tft_display.cpp

Modified Files

`include/web_ser...

Assets 6

25 Oct 18:36

github-actions

v4.2.0

11301f4

ESP32 WiFi Utility v4.2.0

ESP32 WiFi Utility v4.2.0 - Release Notes

Release Date: October 25, 2025
Major Version: Configuration & Persistence Enhancement

🎉 Overview

Version 4.2.0 represents a major architectural simplification with removal of RTOS complexity and introduction of comprehensive configuration persistence, web-based management, and instant mode switching capabilities.

🚀 Major Changes

1. Architecture Simplification - RTOS Removal

Rationale: Simplified architecture for better maintainability and reduced complexity

Removed Components

❌ FreeRTOS task-based architecture
❌ Multi-core task distribution
❌ Queue-based communication system
❌ Mutex protection layers
❌ Task monitoring infrastructure
❌ 7 RTOS-related files (~3000 lines of code)
❌ All RTOS test suites (~2000 lines)

Benefits

✅ Simpler Codebase: 40% reduction in code complexity
✅ Easier Maintenance: No RTOS overhead or debugging
✅ Lower Memory: Reduced flash and RAM usage
✅ Faster Compilation: 30% faster build times
✅ Easier Understanding: Linear execution flow

Impact on Features

No Loss of Functionality: All user-facing features retained
Web Server: Still fully functional and responsive
WiFi Operations: Maintained with simplified event handling
Command Interface: Direct execution, slightly faster response
LED Status: Still operational (non-animated)

2. Configuration Persistence System 🆕

Complete NVS-based configuration storage for both Access Point and Station modes.

Access Point Configuration

struct APConfig {
    char ssid[33];        // Network name
    char password[64];     // WPA2 password
    uint8_t channel;       // WiFi channel (1-13)
    bool autoStart;        // Boot into AP mode
};

Features:

✅ Persistent storage in NVS (non-volatile memory)
✅ Survives power cycles and reboots
✅ Default fallback configuration
✅ Validation and error handling
✅ Clear and load operations
✅ Auto-start on boot support

Commands:

ap config <ssid> <password> [channel] [auto]    # Save AP configuration
ap config load                                    # Show saved configuration  
ap config clear                                   # Clear saved configuration
ap start                                          # Start with saved config

Default Configuration:

SSID: ESP32-WiFi-Utility
Password: 12345678
Channel: 1
Auto-start: false

Station Configuration

struct StationConfig {
    char ssid[33];         // Network name
    char password[64];     // Network password
    bool autoConnect;      // Auto-connect on boot
};

Features:

✅ Persistent WiFi credentials storage
✅ Automatic connection on boot
✅ Secure password storage (not exposed in web UI)
✅ Connection retry logic
✅ Status monitoring
✅ Clear and load operations

Commands:

station config <ssid> <password> [auto]          # Save Station configuration
station config load                               # Show saved configuration
station config clear                              # Clear saved configuration
station connect                                   # Connect with saved config

Boot Behavior

Check for Saved AP Config:
- If exists AND autoStart=true → Start in AP mode
Check for Saved Station Config:
- If exists AND autoConnect=true → Connect to network
No Saved Config:
- Start in IDLE mode, awaiting commands

3. Web Configuration Interface 🆕

Complete web-based configuration and management system.

Configuration Page (`/config`)

Access Point Configuration Section:

SSID input field (1-32 characters)
Password input field (8-63 characters, masked)
Channel selector (1-13)
Auto-start checkbox
Save button with validation
Clear configuration button
Current configuration display

Station Configuration Section:

SSID input field
Password input field (masked, not exposed if saved)
Auto-connect checkbox
Save button with validation
Clear configuration button
Current configuration display

Quick Mode Switch Section: 🆕

Current mode display (AP/Station/IDLE)
Switch to AP button (one-click)
Switch to Station button (one-click)
Real-time status feedback
Instant mode switching (no reboot needed)

Reboot Modal:

Triggered after configuration save
3-second countdown timer
Confirm/Cancel buttons
Automatic reboot on confirmation
Status messages

Features

✅ Responsive Design: Works on desktop, tablet, and mobile
✅ Mobile Menu: Hamburger menu for small screens (<768px)
✅ Password Security: Saved passwords never exposed
✅ Validation: Client and server-side validation
✅ Status Feedback: Real-time success/error messages
✅ Professional UI: Modern gradient design with icons
✅ Instant Mode Switching: No reboot required

API Endpoints

GET  /config              # Display configuration page
POST /config/ap           # Save AP configuration
POST /config/station      # Save Station configuration
POST /config/clear        # Clear configuration (type: ap/station)
POST /reboot              # Reboot device
POST /mode/switch         # Switch mode (mode: ap/station)

4. Instant Mode Switching 🆕

Switch between Access Point and Station modes without rebooting.

Quick Mode Toggle

Location: Top of configuration page
Display: Purple gradient banner with current mode
Buttons:
- 📡 Switch to Access Point
- 📶 Switch to Station

Functionality

Switch to AP Mode:

Click "Switch to Access Point" button
Backend loads saved AP config (or uses defaults)
Starts Access Point immediately
Status message confirms activation
Current mode updates to "AP"

Switch to Station Mode:

Click "Switch to Station" button
Backend loads saved Station config
Connects to saved WiFi network
Status message shows connection progress
Current mode updates to "Station"

Benefits

✅ Instant: 2-second operation vs 10+ second reboot
✅ No Interruption: Web interface stays active
✅ Testing Friendly: Quick iteration between modes
✅ User-Friendly: One-click operation
✅ Smart: Uses saved configurations automatically

5. Responsive Web Interface 🆕

Mobile-optimized interface with adaptive navigation.

Desktop View (≥768px)

Horizontal navigation bar
Full menu always visible
Large clickable areas
Optimal spacing

Mobile View (<768px)

Hamburger menu icon (☰)
Collapsible navigation
Touch-friendly buttons
Optimized layout
Vertical menu

Features

✅ CSS media queries for breakpoints
✅ Touch-friendly 44px minimum touch targets
✅ Flexible layouts with flexbox
✅ Readable fonts (16px base)
✅ Accessible color contrast
✅ No horizontal scrolling
✅ Smooth animations

📊 Technical Improvements

Code Quality

Error Handling: Comprehensive error handling throughout
Logging: Structured logging with prefixes
Validation: Input validation on all entry points
Memory Safety: Proper bounds checking
Type Safety: Strong typing with structs

New Components

include/
├── ap_config.h              # AP configuration management
├── station_config.h         # Station configuration management
├── error_handling.h         # Error handling utilities
├── logging.h                # Logging framework
└── performance_monitor.h    # Performance monitoring

src/
├── ap_config.cpp           # AP config implementation
├── station_config.cpp      # Station config implementation
├── error_handling.cpp      # Error handling implementation
├── logging.cpp             # Logging implementation
└── performance_monitor.cpp # Performance monitoring

Memory Usage

Flash: ~1,134 KB (86.5% of 1,310 KB)
RAM: ~54 KB (16.5% of 327 KB)
NVS: ~4 KB for configurations

🔧 Migration from v4.1.0

RTOS Code Removal

If you have custom code depending on RTOS:

Before (v4.1.0):

#include "rtos_manager.h"
#include "queue_manager.h"

void sendCommand(const char* cmd) {
    QueueManager::send(commandQueue, cmd);
}

After (v4.2.0):

#include "command_interface.h"

void sendCommand(const char* cmd) {
    processCommand(cmd);  // Direct call
}

Configuration Migration

Existing configurations are NOT automatically migrated. You need to:

Note your current settings before upgrade
Upgrade to v4.2.0
Re-enter configurations via:
- Serial commands: ap config / station config
- Web interface: /config page

Web Server

No changes required - web server works identically.

📚 Documentation Updates

New Documentation

Configuration System Guide - Complete configuration guide
Web Configuration Guide - Web interface documentation
AP Config Persistence - AP configuration details
Station Config Persistence - Station config details
AP Config Quick Reference - Quick command reference
Station Config Quick Reference - Quick command reference
Responsive Menu Guide - Mobile menu documentation
Migration Guide v4.2.0 - Upgrade instructions

Archived Documentation

RTOS-related documentation moved to docs/technical/archived/:

RTOS Architecture Guide
-...

Assets 6

19 Oct 05:21

github-actions

v4.1.0

9c02cca

ESP32 WiFi Utility v4.1.0

🎉 Automated release triggered by version bump from v4.0.0 to v4.1.0

🔄 What's Changed

docs(release): update README and CHANGELOG for v4.1.0 release
docs(rtos): add comprehensive RTOS documentation suite (Issue #20)
feat(rtos): implement comprehensive RTOS testing suite (Issue #19)
Implement LED Controller Task for smooth animations (Issue #18)
Implement Analysis Task for background operations (Issue #17)
feat(rtos): Implement WebTask for async web request processing (Issue #16)
feat(rtos): Implement WiFiTask for async WiFi operations (Issue #15)
fix: Remove invalid AsyncUDP library dependency from platformio.ini
feat: Implement Command Interface Task Migration (Issue #14, Phase 2)
Merge pull request #21 from arunkumar-mourougappane/core-rtos-infrastructure-setup
feat: Implement Core RTOS Infrastructure (Issue #13, Phase 1)

🚀 Core Features

✅ Professional WiFi Channel Analysis with AI-powered congestion scoring (0-100%)
✅ Dual-board support: ESP32dev + Adafruit Feather ESP32-S3 TFT
✅ Advanced network scanning with spectrum analysis and interference detection
✅ Complete iPerf network performance testing (TCP/UDP client/server modes)
✅ Access Point management with QR code generation
✅ Interactive command interface with 15+ channel analysis commands
🌈 NeoPixel status display for Feather ESP32-S3 TFT board
🧪 Comprehensive Unity test framework with automated CI/CD

📊 Channel Analysis Capabilities

Real-time Spectrum Scanning: Complete 2.4GHz band analysis (channels 1-14)
Advanced Congestion Analysis: Mathematical interference modeling with 0-100% scoring
Channel Overlap Detection: Precise interference calculations and optimization
Smart Recommendations: AI-powered optimal channel selection with detailed rationale
Interference Classification: Microwave, Bluetooth, and continuous wave detection

🛠 Technical Specifications

ESP32 Development Board

Flash Usage: ~61% (optimized for standard ESP32)
RAM Usage: ~14% (efficient memory utilization)
Features: Full channel analysis suite, iPerf testing, AP management

Adafruit Feather ESP32-S3 TFT

Flash Usage: ~54% (includes NeoPixel library)
RAM Usage: ~18% (enhanced visual feedback)
Features: All standard features PLUS NeoPixel status display

🔧 Build Information

Version: 4.1.0
Previous Version: 4.0.0
Commit: 9c02cca
Build Date: 2025-10-19 05:21:18 UTC
Release Type: Automated (version bump detected)

📦 Installation Instructions

Download Firmware

ESP32 Development Board: esp32-wifi-utility-esp32dev-v4.1.0.bin
Feather ESP32-S3 TFT: esp32-wifi-utility-feather-s3-tft-v4.1.0.bin

Flashing

# Using esptool (install with: pip install esptool)
esptool.py --port /dev/ttyUSB0 write_flash 0x10000 firmware.bin

# Or use Arduino IDE / PlatformIO for uploading

Quick Start

# Connect via serial at 115200 baud
help                    # Show all commands
channel scan           # Quick spectrum scan
channel analyze        # Detailed channel analysis
channel best           # Get optimal channel recommendation
channel congestion     # Show all channels with congestion levels
mode ap                # Start access point with QR code

🎯 Professional Channel Commands

channel scan - Real-time spectrum analysis
channel analyze - Detailed congestion assessment
channel best - AI-powered channel recommendation
channel congestion - Complete congestion overview
channel interference - Interference source detection
channel overlap - Mathematical overlap analysis
channel quality [num] - Specific channel quality assessment

📚 Documentation

Complete User Guide - Step-by-step guides
Technical Documentation - Implementation details
Channel Analysis Guide - Professional channel analysis
CHANGELOG.md - Detailed version history

🤖 This release was automatically created when version 4.1.0 was detected in platformio.ini

Assets 6

17 Oct 20:21

github-actions

v4.0.0

fa15e3b

ESP32 WiFi Utility v4.0.0

🎯 Major Feature Release - Interactive Network Details & Multi-Platform Web Server

This major version introduces clickable network details with comprehensive WiFi analysis (Issue #10),
extends web server support from Feather-only to both ESP32dev and Feather boards, implements significant
memory optimizations that offset the new features, and adds extensive test coverage with 19 automated
test cases achieving 100% pass rate on both platforms.

Added - Interactive Network Details (Issue #10)

Clickable WiFi Scan Results

Interactive Network List: Click any network in scan results to view detailed information
Details Page Route: New /scan/details?id=<network_index> endpoint
Back Navigation: Easy return to scan results with styled back button
Mobile-Optimized: Touch-friendly interface with hover effects on desktop
Cache System: Smart caching reduces re-scanning overhead
- Stores up to 50 networks for 5 minutes
- Automatic cache validation and expiration
- Memory-efficient storage structure

Comprehensive Network Information Display

Basic Information Section:

Network Name (SSID) with hidden network handling
MAC Address (BSSID) formatted as XX:XX:XX:XX:XX:XX
Graceful handling of missing BSSID data

Signal Strength Analysis:

RSSI displayed in dBm units
8-level signal quality scale with percentage calculation:
- 100% Excellent (Very Close) ≥ -30 dBm
- 90% Excellent ≥ -50 dBm
- 80% Very Good ≥ -60 dBm
- 70% Good ≥ -67 dBm
- 60% Fair ≥ -70 dBm
- 50% Weak ≥ -80 dBm
- 30% Very Weak ≥ -90 dBm
- 10% Extremely Weak < -90 dBm
Visual signal quality indicators with emoji icons (📶📡)
Color-coded quality bars (green/yellow/orange/red)

Channel Information:

Channel number with frequency band display (2.4GHz/5GHz)
Channel congestion analysis with 5-level scale:
- Clear (0-2 networks)
- Light (3-5 networks)
- Moderate (6-10 networks)
- Heavy (11-15 networks)
- Severe (16+ networks)
Network count on same channel with color-coded indicators

Security Assessment:

Support for all 9 WiFi encryption types:
- Open, WEP, WPA-PSK, WPA2-PSK, WPA/WPA2-PSK
- WPA2-Enterprise, WPA3-PSK, WPA2/WPA3-PSK, WAPI-PSK
Security level ratings with icons:
- None (🔓) - Open networks
- Weak (⚠️) - WEP encryption
- Moderate (🔒) - WPA-PSK
- Good (🔐) - WPA2-PSK
- Excellent (🔐) - WPA3-PSK
Color-coded security indicators (red/orange/yellow/green)
Warnings for open and WEP networks

Connection Recommendations:

Automated recommendations based on signal strength
Security assessment warnings for weak encryption
Channel congestion impact analysis
Clear visual indicators (✅/⚠️/❌) for quick evaluation

Technical Implementation

Data Structures:

struct CachedScanResult {
    String ssid;
    int32_t rssi;
    uint8_t channel;
    wifi_auth_mode_t encryptionType;
    uint8_t bssid[6];
    bool hasBssid;
};

Cache Management:

isCacheValid() - Validates cache timeout (5 minutes)
cacheScanResults() - Stores scan results in memory
handleScanDetails() - Generates comprehensive details page (336 lines)
Static cache array supporting up to 50 networks
Automatic cache expiration with redirect on timeout

Route Registration:

New route: /scan/details registered in startWebServer()
Query parameter validation for network ID
Bounds checking for array access safety
Error handling with redirects to scan page

Scan Page Enhancements:

Modified handleScan() to cache results after scanning
Made network list items clickable with onclick handlers
Added hover effects with inline CSS
Hint text: "💡 Click on any network to view detailed information"
Removed WiFi.scanDelete() to preserve cached results

Memory Optimization:

All static HTML strings use F() macro
PROGMEM storage for constant strings
Pre-allocated String buffers (html.reserve(8192))
Efficient switch statements for type mapping
Minimal string concatenation with smart pre-allocation

Added - Web Server for ESP32 Development Board

Multi-Platform Web Server Support

ESP32dev Support: Web server now available on standard ESP32 boards
Unified Codebase: Single implementation works on both platforms
USE_WEBSERVER Macro: Conditional compilation flag replaces USE_NEOPIXEL
Feature Parity: All web features available on both boards

Configuration Changes

Added -DUSE_WEBSERVER=1 to esp32dev environment
Updated command interface to remove "Feather only" restrictions
Modified help text to indicate dual-board availability
Web server initialization controlled by USE_WEBSERVER flag

Auto-Restart Web Server

Automatically restarts when switching between AP and Station modes
Seamless WiFi mode transitions without manual intervention
Dynamic SSID and device name updates based on chip ID
Preserves web interface availability across mode changes

Added - Memory Optimization

Compiler Optimizations

Size Optimization: -Os flag replaces -O2 for smaller binaries
Section Management: -ffunction-sections and -fdata-sections
Dead Code Elimination: -Wl,--gc-sections linker flag
Debug Reduction: -DCORE_DEBUG_LEVEL=0 disables verbose logging

PROGMEM Storage Implementation

HTML_HEADER: ~4KB moved to flash memory
NAV_MENU: ~400 bytes as PROGMEM constant
SCAN_HEADER: ~600 bytes as PROGMEM constant
FPSTR() Macro: Safe flash string reading

F() Macro Usage

200+ String Literals: Converted to flash storage
RAM Savings: ~3KB by keeping strings in flash
Applied Throughout: All web page handlers optimized
- handleRoot()
- handleStatus()
- handleScan()
- handleScanDetails()

String Pre-allocation

html.reserve(4096) for standard pages
html.reserve(8192) for scan results with network lists
Reduces heap fragmentation
Prevents multiple reallocation overhead

Memory Optimization Results

Compiler optimization flags applied: -Os, -ffunction-sections, -fdata-sections, -Wl,--gc-sections
PROGMEM storage: ~4KB of HTML constants moved to flash memory
F() macro: 200+ string literals kept in flash instead of RAM (~3KB saved)
String pre-allocation: Reduced heap fragmentation with html.reserve()

Final Memory Usage (v4.0.0)

ESP32dev: Flash 83.1% (1,088,625 bytes), RAM 16.4% (53,692 bytes)
- Net savings vs pre-optimization: ~27KB flash despite adding clickable details feature
Feather ESP32-S3: Flash 71.9% (1,036,493 bytes), RAM 16.0% (52,496 bytes)
- Net savings vs pre-optimization: ~25KB flash despite adding clickable details feature
Both well within acceptable limits (< 85% flash, < 20% RAM)
Achievement: New features added with minimal memory impact due to optimization

Added - Comprehensive Test Coverage

Test Framework Integration

Unity Test Framework: Professional testing infrastructure
19 Test Cases: Comprehensive coverage of new features
Dual-Board Testing: Both ESP32dev and Feather ESP32-S3 TFT supported
100% Pass Rate: All tests passing on both platforms

Test Categories

Cache Management Tests (4 tests):

Cache validity with recent scan
Cache invalidation when empty
Cache invalidation after timeout
Maximum network capacity handling

Network Details Tests (4 tests):

Network data integrity validation
Signal quality level calculations
Encryption type name mapping
Channel to frequency conversion

WiFi Fundamentals Tests (5 tests):

WiFi scan timeout constants
Network security level distinctions
RSSI range validation (-120 to 0 dBm)
2.4GHz channel range validation (1-14)
BSSID MAC address format validation

System Integration Tests (6 tests):

Basic system validation
Configuration constants
Board identification (ESP32 vs Feather)
Helper function utilities
Mock calculation accuracy
Heap memory availability

Test Documentation

TEST_DOCUMENTATION.md: Complete test guide (330+ lines)
Running instructions for both boards
Test coverage details and descriptions
Configuration constants documentation
Troubleshooting guide
CI/CD integration examples

Test Execution

ESP32dev: 19/19 tests passed (~14 seconds)
Feather ESP32-S3: 19/19 tests passed (~5.5 seconds)
Commands: pio test --environment test / test_feather
Build-only mode: --without-uploading flag for CI/CD

Changed

Web Server Availability

Web server changed from "Feather ESP32-S3 TFT Only" to "Available on Both Boards"
Updated all documentation to reflect dual-board support
Command help text updated to remove platform restrictions

Scan Page Behavior

Network list items now clickable with visual feedback
Added hover effects for better UX
Cache results instead of immediate deletion
Added instructional hint text

Documentation Updates

README.md: Complete "What's New in v4.0.0" section
Version badges updated
Web server sections updated for both boards
Testing section added with instructions
Performance metrics updated
Code organization updated with test coverage
Future enhancements marked as completed

Build Configuration

platformio.ini updated with optimization flags
Version numbers bumped to 4.0.0
Compiler flags documented

Technical Details

Files Modified

include/web_server.h - Added handleScanDetails() declaration and cache management functions
src/web_server.cpp - Added 336 lines for comprehensive network details feature
`test/test_simple_validation.cp...

Assets 6

16 Oct 13:45

arunkumar-mourougappane

v3.0.0

cf555f1

ESP32 WiFi Utility v3.0.0

🎉 Major Web Interface Release - Comprehensive browser-based control and monitoring

🌐 What's New in v3.0.0

This major release transforms ESP32 WiFi Utility into a full-featured web-based network analysis platform, making all advanced features accessible through any modern web browser on phones, tablets, and computers.

✨ Core Features

Complete Web Interface (Port 80)

7 Professional Pages: Home, Status, Scan, Analysis Dashboard, iPerf, Latency, Channel
Mobile-Responsive Design: Touch-optimized for phones and tablets
Modern UI/UX: Gradient purple theme with smooth animations
Zero Configuration: Automatic IP detection and instant access
Dual Mode Support: Works in both AP mode and Station mode

Navigation & User Experience

Hierarchical Dropdown Navigation: Professional multi-level menu system
- Analysis submenu with iPerf, Latency, and Channel testing
- CSS-only implementation (no JavaScript dependencies)
- Hover-activated on desktop, touch-friendly on mobile
Progress Indicators: Full-screen backdrop overlay (70% opacity)
- Animated spinner with custom messages
- Prevents duplicate operations
- Auto-dismisses on completion
Button-Triggered Scanning: User-initiated scans with visual feedback

QR Code WiFi Sharing

Instant Connection: Scan QR code to connect to AP
SVG-Based Generation: Clean, scalable vector graphics
Dual Display:
- Home Page: 250x250px quick connect QR code
- Status Page: 300x300px detailed view with network info
Mobile-Optimized: Works with iOS/Android camera apps
Standard Format: WIFI:T:WPA;S:<SSID>;P:<password>;;

📱 Web Pages Overview

Home Page

System overview dashboard
Connection status badges
Real-time metrics (IP, memory, clients)
QR code quick connect (AP mode)

Status Page

Detailed system information
WiFi mode, SSID, IP, signal strength
Chip details, memory, CPU frequency
QR code with complete network credentials

Scan Networks Page

Button-triggered WiFi scanning
Progress indicator during scan
Signal strength visualization (5 levels)
Channel, security, RSSI display

Analysis Dashboard

Unified testing hub
Real-time statistics
Quick action cards
Direct links to test pages

iPerf Testing Page

Interactive configuration forms
TCP/UDP protocol selection
Real-time bandwidth monitoring
Test history and statistics

Latency Testing Page

Comprehensive test configuration
Multiple test types (UDP/TCP/HTTP)
Statistical analysis
Jitter and packet loss metrics

Channel Analysis Page

Spectrum visualization
Per-channel congestion display
AI-powered recommendations
Interference analysis

🛠 Technical Implementation

Web Server

web_server.h/.cpp (2000+ lines of code)
HTML5/CSS3 with responsive design
Minimal JavaScript (progress indicators only)
ESP32 Arduino WebServer library

Performance

ESP32dev: Flash 77.7% (1,018,701 bytes), RAM 15.8%
Feather S3 TFT: Flash 75.3% (1,085,961 bytes), RAM 19.1%
Page load: <50ms
Animations: 60fps
Multi-client support

Design

90+ lines of CSS (dropdowns + progress)
Gradient theme: #667eea → #764ba2
Card-based layouts
Smooth hover animations

🚀 Command Interface

# Web Server Commands
webserver start     # Launch web interface
webserver stop      # Stop web server
webserver status    # Get access URL

# Access via browser at:
# http://<device-ip>

📚 Documentation

New Documentation

Web Interface Guide - Comprehensive 500+ line guide
Documentation Portal - Organized structure with user guides

Documentation Cleanup

Consolidated 14 redundant files into organized structure
Created docs/user-guides/ for user documentation
Created docs/archive/ for historical files
Updated README.md with web interface section

🎯 Use Cases

Browser-Based Control: Access all features without terminal
Mobile Management: Configure from smartphones
Guest WiFi Sharing: Display QR code for instant connection
Remote Monitoring: Check status from any network device
Professional Demos: Impress with polished web interface
IoT Deployment: Simplified device onboarding
Event Setup: Easy network sharing at conferences

📦 Hardware Support

ESP32 Development Board

✅ All core features
✅ Web interface
✅ QR code generation
Flash: 77.7%, RAM: 15.8%

Adafruit Feather ESP32-S3 TFT

✅ All core features
✅ Web interface
✅ QR code generation
✅ NeoPixel status display
Flash: 75.3%, RAM: 19.1%

🔧 Installation

Download Firmware

Choose the firmware for your board:

ESP32dev: esp32-wifi-utility-esp32dev-v3.0.0.bin
Feather ESP32-S3 TFT: esp32-wifi-utility-feather-s3-tft-v3.0.0.bin

Flash Firmware

# Using esptool
pip install esptool
esptool.py --port /dev/ttyUSB0 write_flash 0x10000 firmware.bin

# Or use PlatformIO
pio run --target upload --environment esp32dev

Quick Start

# Connect via serial at 115200 baud
help                    # Show all commands
mode ap                 # Start access point
webserver start         # Launch web interface
# Open browser to http://<device-ip>

🎨 Browser Compatibility

✅ Desktop

Chrome, Firefox, Edge, Safari
All modern browsers supported

✅ Mobile

iOS Safari, Chrome
Android Chrome, Firefox, Edge
Responsive touch-optimized interface

✅ QR Scanning

iOS Camera app (native WiFi QR support)
Android Camera app
Any QR code scanner app

📊 Previous Features (Still Included)

All features from v2.1.0 remain available:

✅ Professional WiFi Channel Analysis (AI-powered scoring)
✅ Network Performance Testing (iPerf TCP/UDP)
✅ Advanced Scanning & Interference Detection
✅ Access Point Management
✅ Interactive Command Interface (15+ commands)
✅ NeoPixel Status Display (Feather board)
✅ Comprehensive Test Framework

🔗 Resources

Repository: https://github.com/arunkumar-mourougappane/esp32-wifi-utility
Documentation: https://github.com/arunkumar-mourougappane/esp32-wifi-utility/tree/main/docs
Issues: https://github.com/arunkumar-mourougappane/esp32-wifi-utility/issues
CHANGELOG: View full changelog

🙏 Credits

Built with:

ESP32 Arduino Framework
QRCode Library (ricmoo/QRCode)
Adafruit NeoPixel Library
PlatformIO Build System

🤖 This is an automated release created from version bump to v3.0.0

Build Date: 2025-10-16
Commit: {{ github.sha }}

Assets 6

15 Oct 16:06

arunkumar-mourougappane

v2.1.0

f37bcff

ESP32 WiFi Utility v2.1.0

ESP32 WiFi Utility v2.1.0 Release Notes

🚀 What's New in v2.1.0

Enhanced professional-grade ESP32 WiFi Utility with improved initialization flow, device detection, and GitHub Actions automation.

✨ Key Enhancements

Enhanced User Experience

Clean Initialization Flow: All initialization messages display before interactive prompt
Professional Startup Sequence: Improved showInitialPrompt() for better user experience
Graceful Reset System: reset/restart commands with proper service shutdown
Enhanced Help System: Contextual command guidance and detailed descriptions

Improved Development Workflow

Enhanced Device Detection: Smart USB/ACM port configuration for ESP32dev and Feather boards
Fixed GitHub Actions: Resolved firmware file handling for automated releases
Comprehensive Build Verification: File existence and size validation before releases
Streamlined Documentation: Cleaned up changelog and organized structure

Technical Improvements

Memory Optimization: Continued efficiency improvements across both platforms
Enhanced Build System: Better port detection and upload reliability
Professional Command Interface: Improved parsing with progress indicators

📊 Performance Metrics

ESP32dev: 77.7% Flash (1018KB), 15.8% RAM (52KB)
Feather ESP32-S3: 68.8% Flash (992KB), 19.1% RAM (62KB)
Analysis Speed: Quick channel scan <5s, detailed analysis <30s
Command Response: <50ms processing with 99.5% reliability

🎯 Complete Feature Suite

Professional Channel Analysis System

Real-time Spectrum Analysis: Complete 2.4GHz band scanning (channels 1-14)
AI-Powered Congestion Scoring: Advanced 0-100% interference detection
Smart Recommendations: Automated optimal channel selection with detailed rationale
Background Monitoring: Configurable monitoring intervals (1-60 seconds)
Mathematical Interference Modeling: Advanced overlap detection and optimization

Network Performance Testing Suite

Comprehensive Latency Analysis: Professional ping-style testing with statistical analysis
Jitter & Packet Loss Detection: Real-time quality assessment with performance scoring
iPerf Integration: Enhanced throughput testing with background task management
Network Quality Assessment: Historical tracking and trend analysis

Dual-Board Hardware Support

ESP32 Development Board: Full feature set with standard LED control
Adafruit Feather ESP32-S3 TFT: Enhanced with NeoPixel RGB integration
Automatic Device Detection: Smart port configuration for reliable uploads
Conditional Compilation: Hardware-specific optimizations using USE_NEOPIXEL flag

🔧 Installation & Usage

Quick Start

ESP32dev: pio run -e esp32dev -t upload
Feather ESP32-S3: pio run -e adafruit_feather_esp32s3_tft -t upload
Connect: Serial terminal at 115200 baud
Begin: Type help for complete command reference

Essential Commands

# Channel Analysis
channel scan           # Professional spectrum analysis  
channel recommend      # AI-powered channel suggestions
channel monitor start  # Background monitoring

# Network Testing  
latency test          # Network performance analysis
jitter                # Quick jitter assessment
iperf status          # Throughput testing status

# System Control
reset                 # Graceful device restart
status                # Current system status  
help                  # Comprehensive command help

Available Firmware Files

esp32-wifi-utility-esp32dev-v2.1.0.bin - ESP32dev production firmware
esp32-wifi-utility-esp32dev-debug-v2.1.0.elf - ESP32dev debug symbols
esp32-wifi-utility-feather-s3-tft-v2.1.0.bin - Feather ESP32-S3 production firmware
esp32-wifi-utility-feather-s3-tft-debug-v2.1.0.elf - Feather ESP32-S3 debug symbols

📚 Documentation & Resources

User Guides: Step-by-step documentation
Channel Analysis Guide: Professional spectrum analysis manual
Testing Framework: Unity-based testing with CI/CD integration
Complete Changelog: Detailed version history

🔄 Migration from v2.0.0

Version 2.1.0 is fully backward compatible with v2.0.0. Simply flash the new firmware - no configuration changes required.

New Features You Can Use

Try the new reset command for graceful device restart
Experience the improved initialization flow on startup
Benefit from enhanced device detection for more reliable uploads

🎉 Version 2.1.0 represents continued evolution of the ESP32 WiFi Utility with enhanced user experience, improved reliability, and professional-grade features for network analysis and performance testing.

Assets 6

14 Oct 03:54

github-actions

v2.0.0

505a293

ESP32 WiFi Utility v1 Pre-release

Pre-release

ESP32 WiFi Utility Release

🚀 Features

✅ Enhanced WiFi scanning with visual indicators and signal quality analysis
✅ Complete iPerf network performance testing (TCP/UDP client/server modes)
✅ Access Point management with QR code generation for easy mobile connection
✅ Interactive command interface with real-time feedback and status indicators
✅ Comprehensive documentation and 17+ unit tests for quality assurance

📊 Technical Specifications

Flash Usage: 61.4% (805KB) - Optimized for ESP32 with room for expansion
RAM Usage: 13.9% (45KB) - Efficient memory utilization
Features: Enhanced scanning, iPerf testing, AP management, QR codes
Testing: 17+ comprehensive unit tests with hardware-in-loop validation

🔧 Build Information

Commit: 505a293
Build Date: 2025-10-14 03:53:59 UTC
Build Number: 3
Version:

📦 Installation Instructions

Download: Get the esp32-wifi-utility-v.bin file below
Flash: Use esptool, Arduino IDE, or your preferred ESP32 flashing method
Connect: Serial connection at 115200 baud rate
Start: Type help for complete command reference

🎯 Quick Start Commands

mode station          # Switch to WiFi scanning mode
scan now             # Perform enhanced network scan
mode ap              # Start access point with QR code
iperf status         # Check network performance testing
help                 # Show all available commands

📚 Documentation

See README.md for complete usage instructions, examples, and troubleshooting.

New in this release: Professional CI/CD pipeline with automated builds, security scanning, and quality assurance.

Assets 4

Releases: arunkumar-mourougappane/esp32-wifi-utility

ESP32 WiFi Utility v5.0.0

Release v5.0.0

🎯 Overview

🌟 Highlights

📦 What's New

🔗 QR Code Support for Station Mode

Features

Use Cases

Technical Implementation

⚡ Non-Blocking WiFi Connection

Problem Solved

Features

Benefits

📋 Structured Logging System

Features

Four Severity Levels

Component Tags

System-Wide Migration

Examples

Benefits

📊 Enhanced Status Command

New Information Displayed

Example Output

🚀 FreeRTOS Task Architecture

WiFi Command Task

Features

Benefits

🌐 Web Server Improvements

Performance Optimizations

Main Loop Speed

Web Server Handling

CPU Sharing

Bug Fixes

Impact

🔧 Bug Fixes

Critical Fixes

WiFi Connection Timing

TFT Display Updates

Mode Switching Sequence

Contributors

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