The latest development version of this page may be more current than this released v2026.04.0 version.

IRQ Shared Memory Demo – Remote Side

The remote firmware receives timestamped packets from the host, mirrors each payload into the return buffer, and notifies the host via IPI. When a "shutdown" marker arrives it disables interrupts and exits the loop.

Demo Sequence

1. Get the shared memory device I/O region.

2. Get the IRQ device I/O region.

3. Register the IRQ interrupt handler.

4. Wait for remote IRQ notification to receive a message.

5. When a message is received, check whether it is the shutdown marker.

6. If it is shutdown, clean up; otherwise, echo it back to the shared buffer.

7. Kick IRQ to notify the host that a message was written into shared memory.

8. Repeat step 4.

9. Clean up: disable the IRQ interrupt and deregister the handler.

Supported Platforms

• AMD RPU (FreeRTOS)

Platform-specific prerequisites, build instructions, and troubleshooting tips live in the linked machine documentation.