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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.

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.

• 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.

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.

• 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.

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

📂 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:

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