Amazon IoT Greengrass V2
Compatibility with Amazon IoT Greengrass V2 devices
Amazon IoT Greengrass V2 support for client devices is backwards-compatible with Amazon IoT Greengrass V1. You can connect FreeRTOS client devices to V2 core devices without changing the application code. To enable client devices to connect to a V2 core device, do the following.
Deploy Greengrass software to the Greengrass core device. See Connect client devices to core devices to connect a device to Amazon IoT Greengrass V2.
To relay messages (including Lambda functions) between client devices, Amazon IoT Core cloud service, and Greengrass components, deploy and configure the MQTT bridge component.
Deploy the IP detector component to automatically detect connectivity information, or manually manage the endpoints.
See Interact with local Amazon IoT devices for more information.
For more details, see Amazon documentation about running Amazon IoT Greengrass V1 applications on Amazon IoT Greengrass V2.