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.

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📌 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.

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🧩 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.

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🔁 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.

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🛠 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.

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🚀 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

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📁 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.