⚡ Arduino DuinoScope GIGA R1 ⚡

DuinoScope GIGA R1, a high-performance, feature-rich dual-channel digital oscilloscope built specifically for the Arduino GIGA R1 WiFi board and the Arduino Giga Display Shield (800x480 capacitive touch display).

This project leverages the impressive dual independent 1 Msps ADCs and hardware peripherals of the STM32H7 microcontroller to deliver a competent, responsive, and aesthetically stunning scope. It also features a real-time web-based control panel accessible over a local WiFi Access Point.

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🚀 Key Features

• 📊 Dual-Channel Trace Acquisition: Independent sampling on channels CH0 (A0 - Yellow trace) and CH1 (A1 - Cyan trace).
• ⚡ High-Speed 1 Msps Sampling: Exploits dual independent ADCs using hardware-optimized circular DMA buffers.
• 📱 On-Board Capacitive GUI: A sleek dashboard built on the Giga Display using GU_Elements and LVGL styling. Supports advanced touch gestures:
  • Pinch Zoom: Seamlessly scale the Timebase on the fly.
  • Vertical Drag: Adjust vertical trace offsets directly on the screen.
• 🌐 Wireless Access Point & Captive Portal:
  • Generates a standalone hotspot named DuinoScope (Password: 12345678).
  • Captive Portal DNS automatically redirects connected devices to the control dashboard.
• 🖥️ Real-Time Web Control Panel:
  • Responsive mobile-optimized interface with styled HSL color palettes and dark glassmorphism design.
  • Telemetry Parameters: Real-time display of Frequency (Frec), Peak-to-Peak Voltage (Vp-p), Maximum Voltage (Vmax), and Minimum Voltage (Vmin) for both channels.
  • Interactive controls to toggle channels, modify Volts/Div, alter Timebase, and customize Trigger parameters.
• 🚦 Smart RGB Status LED:
  • 🔵 Breathing Blue: Waiting for WiFi connection / Disconnected.
  • 🔵 Solid Blue (Dim): WiFi remote client connected.
  • 🟢 Green (Dim): Standby with no signal activity.
  • 🟡 Yellow (Solid): CH0 active and traces shown.
  • 🔵/🟢 Cyan (Solid): CH1 active and traces shown.
• 🛡️ Analog Front End (AFE) Support: Integrates digital outputs (pins 3, 4, 5, and 6) to configure hardware attenuation and voltage ranges on an optional Fscope-500k daughterboard (handling ± inputs and 10x probes).

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🛠️ Hardware & Port Specifications

Hardware Component	Pin / Channel	Description / Parameters
Channel 0 Input	A0	Yellow trace analog signal input
Channel 1 Input	A1	Cyan trace analog signal input
AFE CH0 Control	Pins 3 & 4	Range selection logic signals for CH0
AFE CH1 Control	Pins 5 & 6	Range selection logic signals for CH1
Trigger Output / Sync	Pin 2	Synchronization indicator output pin
Status RGB LEDs	LEDR, LEDG, LEDB	Active-low PWM-driven status indicators

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🌐 WiFi AP Configuration

When powered up, DuinoScope starts a secure local hotspot. You can connect your phone or laptop to access the web panel:

• SSID: DuinoScope
• Password: 12345678
• Web Dashboard URL: http://192.168.3.1/ (Any browser request will automatically redirect here via Captive DNS).
• Polling Debounce: The web UI polling interval is 250ms with a 3-strike buffer (750ms total debounce) to ensure telemetry updates remain smooth and avoid flickering connection state alerts on single-packet loss.

📱 Screenshots

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📚 Library Dependencies

To compile this project, ensure you have the following libraries installed in your Arduino IDE or CLI path:

1. Arduino_AdvancedAnalog (v1.5.0): For fast, hardware-level trace buffer acquisition via DMA.
2. lvgl (v8.3.11): The UI library used to build the modern graphical interface. Note that version 8.x is required.
3. Arduino_H7_Video (v1.0): Built-in library (part of arduino:mbed_giga core) to interface with the display hardware.
4. Arduino_GigaDisplayTouch (v1.1.0): Touch driver for the Giga Display Shield.
5. Arduino_GigaDisplay_GFX (v1.1.0): Display driver interface.
6. WiFi (v1.0) & WiFiUdp: Built-in libraries for local Access Point and DNS captive portal.

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💾 Installation & Compilation

Using Arduino CLI

1. Put the Arduino GIGA R1 board in DFU bootloader mode by double-pressing the physical RESET button (the green LED near the USB port will start breathing).
2. Compile and upload using the command below:

arduino-cli compile --fqbn arduino:mbed_giga:giga --port 1-3.2 --upload /path/to/DuinoScope-GIGA-R1

(Replace /path/to/... and 1-3.2 with your actual workspace folder and DFU port).

Using Arduino IDE

1. Open DuinoScope-GIGA-R1.ino in the Arduino IDE.
2. In Tools -> Board, select Arduino GIGA R1.
3. Plug in the board and select the appropriate serial port.
4. Click Upload. (If upload fails due to CDC access permissions, double-tap the RESET button to compile/upload in DFU mode).

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📂 Project Structure

DuinoScope-GIGA-R1/
├── DuinoScope-GIGA-R1.ino  # Main sketch containing logic, display rendering & web server loop
├── duinoscope.h            # Scope structure definitions, timebase indexes, and volts/div parameters
├── duinoscope_html.h       # Embedded C++ raw string literal containing the compiled HTML portal
├── duinoscope_control_panel.html # Source HTML dashboard code (kept as design reference)
├── LICENSE                 # GNU General Public License v3.0
└── README.md               # This project documentation

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💖 Acknowledgements

Special thanks to gilesp1729, the original author of the code, for laying the foundation of this project and for his excellent work on the display drivers and initial oscilloscope implementation for the Arduino GIGA R1.

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📄 License

This project is licensed under the GNU General Public License v3.0 (GPL-3.0). See the LICENSE file for the full text.