SDAA352 May   2026 TDA4VH-Q1 , TDA4VL-Q1 , TDA4VM , TDA4VM-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2System Architecture
    1. 2.1 Core Configuration
    2. 2.2 Power Domain Architecture
    3. 2.3 IPC Framework Overview
  6. 3Heartbeat Monitoring Design
    1. 3.1 Ping-Pong Protocol
    2. 3.2 Dual-Task Architecture
    3. 3.3 Crash Detection Logic
  7. 4 Recovery Mechanism
    1. 4.1 Power State Transitions
  8. 5 Implementation Details
    1. 5.1 Configuration Parameters
    2. 5.2 Parameter Tuning Guidance:
    3. 5.3 Linux-Side rpmsg_char Implementation
  9. 6 Test Results and Performance
    1. 6.1 Timing Profile
    2. 6.2 Recovery Verification
  10. 7Summary
  11. 8References

7 Summary

This application note presented a complete implementation of inter-core heartbeat monitoring and automatic recovery for the TDA4x platforms. The key contributions include:

  1. Dual-Task Monitoring Architecture: Separate tasks for RTOS and Linux cores enable independent monitoring with appropriate timeout behaviors for each environment.
  2. Ping-Pong Protocol: Simple request-response protocol provides reliable core health verification with configurable parameters.
  3. Semaphore-Based Synchronization: Proper task synchronization verifies reliable IPC shutdown without race conditions.
  4. MCU Only Mode Recovery: Leveraging the SOC's power domain architecture enables autonomous recovery without full system reboot.
  5. Timing Profile: Detailed timing measurements demonstrate recovery performance of approximately 1.2 seconds.

The implementation provides a foundation for fault-tolerant automotive and industrial systems where high availability and automatic recovery are essential requirements.

Future enhancements can include:

  • Selective core recovery (restart only crashed core without full MAIN domain power cycle)