OBDII-Emulator

About

OBDII-Emulator is an ESP32-based tool designed to emulate data sent by OBDII interface. It serves as a testing utility for the CAR-BT-HMI project. The emulator simulates real-time OBD-II data, responding to Bluetooth read requests with dynamically changing values based on a cycle time.

OBD-II PIDs

OBDII-Emulation is performed as per Wikipedia OBD-II PIDS.

• Implemented OBD-II PIDs
  • Engine Speed 01 0C
  • Vehicle Speed 01 0D

Key Features

• Configuration

  • The ESP32 acts as an access point with a static IP (192.168.4.2).
  • Allows users to modify settings such as cycle time, min/max values, and increment steps.
  • Stored in /data/default_config.json, users can adjust SSID, password, and OBD parameter settings.
  • Configuration is stored in flash memory, allowing persistence across reboots.

• Emulation

  • Simulates real-time updates to OBD parameters and responds to Bluetooth requests with corresponding values.
  • Connect to OBDII-ESP via Bluetooth in order to send requests.

Requirements

• Software:

  • VSCode as IDE
  • PlatformIO

• Hardware:

  • ESP32 board

Using Commands

• Build: pio run
• Upload: pio run nobuild -t upload
• Upload Filesystem Image (default_config.json): pio run -t uploadfs