Issues with Deploying Greengrass Component on Raspberry Pi 5 Using GPIOZero/gpiod Libraries

While there are no known specific compatibility issues between AWS IoT Greengrass and Raspberry Pi 5 for GPIO control, the problem you're experiencing could be related to permissions or the way the Greengrass component is configured to interact with the GPIO pins.

Here are a few things to consider:

1. Permissions: Ensure that the user running the Greengrass component has the necessary permissions to access GPIO pins. By default, Greengrass components run as the system user and group configured on the core device. You may need to add the Greengrass user to the gpio group or adjust permissions accordingly.

2. Component Configuration: Make sure your component's recipe is properly configured to allow access to the necessary system resources. You might need to include specific configuration in your component's recipe to grant access to GPIO devices.

3. Library Dependencies: Ensure that the gpiozero and gpiod libraries are properly installed and accessible to your Greengrass component. You may need to include these libraries as dependencies in your component's recipe.

4. Lifecycle Scripts: Check that your component's lifecycle scripts are correctly set up to initialize and use the GPIO libraries. The component lifecycle defines how the component behaves during different states, including how it starts and runs.

5. Debugging: Use the Greengrass CLI or local debug console to deploy and debug your component on the Raspberry Pi. These tools can help you create local deployments, view details about installed components, and explore log files to identify any issues.

6. Custom Lambda Function: Consider using a custom Lambda function within your Greengrass component to handle GPIO operations. This approach might provide more flexibility and easier debugging.

If you're still facing issues after checking these points, you may want to review the Greengrass logs for any specific error messages or use the local debug console to get more detailed information about what's happening when your component tries to interact with the GPIO pins.

Remember that developing custom components for AWS IoT Greengrass often requires iterative testing and debugging, especially when working with hardware-specific features like GPIO control.

Sources
AWS IoT Greengrass development tools - AWS IoT Greengrass
Develop AWS IoT Greengrass components - AWS IoT Greengrass