Send a command to multiple devices in Google Cloud IoT Core with MQTT

manpreet Best Answer 2 years ago

_x000D_ You would need to list devices in a registry, and then call the sendCommandToDevice method in a loop as you suggested. For reference, it would look something like this (in Python): command = '{ "state": "off" }' registry_path = 'projects/{}/locations/{}/registries/{}'.format( project_id, cloud_region, registry_id) client = get_client(service_account_json) devices = client.projects().locations().registries().devices( ).list(parent=registry_path).execute().get('devices', []) for device in devices: device_path = 'projects/{}/locations/{}/registries/{}/devices/{}'.format( project_id, cloud_region, registry_id, device.get('id')) config_body = { 'binaryData': base64.urlsafe_b64encode( command.encode('utf-8')).decode('ascii') } client.projects().locations().registries().devices().sendCommandToDevice( name=device_path, body=config_body).execute()