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Unified Controller eMMC Mount Verification

This repository validates the feasibility of deploying eMMC storage on a unified controller that combines the car head unit and TBox.

Although the eMMC is deployed under the car head unit, the Linux-based TBox must successfully mount it after each suspend and wake-up cycle. The TBox accesses the eMMC via internal Ethernet or other bus interfaces.

📌 Objective

To ensure that the eMMC can be reliably mounted and accessed by the TBox after every suspend and wake-up cycle, confirming the solution’s stability in a unified automotive controller architecture.

🧩 System Structure

  • Unified Controller: Combines the head unit and TBox into a single domain controller.
  • eMMC Deployment: Physically under the car head unit system.
  • TBox OS: Linux-based system requiring access to eMMC after each power cycle.
  • Connection: TBox accesses eMMC via internal Ethernet or bus.

🔁 Test Workflow

  1. Sleep/Wake Control via CAPL

    • CAPL scripts send sleep and wake-up CAN messages.
    • These control the power states of the TBox and head unit.

  2. Mount Verification via Python

    • After wake-up, a Python script uses ADB to connect to the TBox.
    • The script logs in with a username and password.
    • It checks a specific directory on the TBox Linux file system.
    • The presence of expected folders confirms eMMC is mounted successfully.

🛠 Scripts Overview

  • sleep_wake_controller.can
    CAPL script that sends CAN messages to trigger suspend and wake-up events.

  • emmc_mount_check.py
    Python script using ADB to log into the Linux system, validate login, and verify mount status.

🚀 How to Use

  1. Connect the test bench (TBox + Head Unit + CAN + eMMC).
  2. Run the CAPL script using CANoe or CANalyzer to trigger suspend/wake cycles.
  3. After each wake-up:
    • Use ADB over USB/Ethernet to connect to the TBox.
    • Execute the Python script: 
      python emmc_mount_check.py
  4. The script will:
    • Authenticate to the Linux system
    • Check the presence of the target eMMC mount path
    • Output success/failure log for each cycle

📁 Folder Structure

📂 capl/ └── sleep_wake_controller.can # CAPL script for controlling suspend/wake cycles and triggering mount check

📂 python/ └── emmc_mount_check.py # This script verifies whether the eMMC partition is correctly mounted after a Linux-based domain controller wakes up from sleep. Useful for automotive integration of TBox + Head Unit systems.

Note:

Real credentials and paths have been anonymized.

Replace "your_username" and "your_password" and paths with actual values securely.

Do not hardcode credentials in production environments.