📡 ESP32-C5 Multi-Sensor Hub 🌐

This project implements a comprehensive multi-sensor hub using the ESP32-C5 microcontroller. It integrates data from various sensors (temperature, humidity, IMU, ambient light), transmits this data over a CAN bus (with optional encryption using Ascon-128), and provides Bluetooth Low Energy (BLE) connectivity for remote access. The system also includes an LED strip for visual feedback.

🚀 Key Features

• Multi-Sensor Integration: Reads data from AHT20 (temperature/humidity), LSM6DSO32 (IMU), and VEML7700 (ambient light) sensors. 🌡️
• CAN Bus Communication: Transmits sensor data over a CAN bus using the TWAI controller. 🚗
• Encryption Options: Supports CAN bus message encryption using Ascon-128 algorithms for secure communication. 🔒
• Bluetooth Low Energy (BLE): Enables remote access to sensor data via BLE using the NimBLE stack. 📱
• LED Strip Control: Provides visual feedback through an LED strip, indicating system status or sensor readings. 💡
• User-Friendly Flashing: Includes a bash script for easy flashing and monitoring of ESP32 devices. ⚡

🛠️ Tech Stack

• Microcontroller: ESP32-C5
• Real-Time Operating System (RTOS): FreeRTOS
• Wireless Communication:
  • Bluetooth: NimBLE
• Serial Communication:
  • CAN: TWAI (Two-Wire Automotive Interface)
• Sensors:
  • AHT20 (Temperature & Humidity)
  • LSM6DSO32 (IMU - Accelerometer & Gyroscope)
  • VEML7700 (Ambient Light)
• Encryption:
  • AES-CCM (using mbedtls)
  • Ascon-128
• Programming Language: C
• Build System: CMake, ESP-IDF
• Component Manager: ESP-IDF Component Manager
• LED Strip Library: espressif/led_strip
• Bash Scripting: For device flashing and monitoring.

📂 Project Structure

├── CMakeLists.txt
├── main
│   ├── canaes
│   │   ├── canaes.c
│   │   └── canaes.h
│   ├── canascon
│   │   ├── canascon.c
│   │   └── canascon.h
│   ├── esp32_ascon
│   │   ├── ascon.h
│   │   ├── core.c
│   │   ├── decrypt.c
│   │   ├── encrypt.c
│   │   └── constants.h
│   ├── bluetooth
│   │   ├── ble_fdcan_sens.h
│   │   └── gatt_svr.c
|   |   └── esp_ble.c
│   ├── i2c_devices
│   │   ├── AHT20.h
│   │   ├── lsm6d.h
│   │   └── veml.h
│   ├── grad_proj.c
│   └── idf_component.yml
├── device_selector.sh
└── README.md

📸 Screenshots

📝 License

This project is licensed under the MIT License - see the LICENSE file for details.