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AWS Greengrass
Developer Guide

Download Required Files

  1. If you haven’t already done so, install the AWS IoT Device Python SDK. Follow the instructions in the README file. This SDK is used by all AWS IoT devices to communicate with the AWS IoT cloud and AWS Greengrass cores.

  2. From the GitHub repository, download the lightController.py and trafficLight.py files to your computer and move them to the folder containing the GG_Switch and GG_TrafficLight device certificates:

    
                            Screenshot of files including the two Python scripts and the
                                device certificates and keys.

    The lightController.py script corresponds to the GG_Switch device, and the trafficLight.py script corresponds to the GG_TrafficLight device.