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gw_RPi3/python/gateway_http_downlink.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Tue Jun 8 16:03:39 2021
@author: Georges de Massol
"""
import grpc
from chirpstack_api.as_pb.external import api
class Downlink:
def __init__(self, server = "localhost:8080", api_token = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhcGlfa2V5X2lkIjoiYzA2ZGY1MDMtNjE5Zi00ZjI2LTgxNzEtYTU0OTRmMWJmYmRmIiwiYXVkIjoiYXMiLCJpc3MiOiJhcyIsIm5iZiI6MTYyMjY1MzMzMSwic3ViIjoiYXBpX2tleSJ9.23eLyvgd5zheP9hDM0acCAl9ojhQjLTZAU77IKqhvQY'):
"""
Parameters
----------
server : string, optional
Chirpstack server adress, with port. The default is "localhost:8080".
api_token : TYPE, optional
Chirpstack API token.
Returns
-------
None.
"""
# This must point to the API interface.
self.server = server
# The DevEUI for which you want to enqueue the downlink.
#dev_eui = bytes([0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01])
# The API token (retrieved using the web-interface).
self.api_token = api_token
def Lorasend(self, dev_eui, data):
"""
Parameters
----------
dev_eui : hex
The DevEUI for which you want to enqueue the downlink.
data : bytes
Data to be sent to the endpoint.
Returns
-------
fCnt : int
Downlink frame-counter value.
"""
# Connect without using TLS.
channel = grpc.insecure_channel(self.server)
# Device-queue API client.
client = api.DeviceQueueServiceStub(channel)
# Define the API key meta-data.
auth_token = [("authorization", "Bearer %s" % self.api_token)]
# Construct request.
req = api.EnqueueDeviceQueueItemRequest()
req.device_queue_item.confirmed = False
req.device_queue_item.data = bytes(data)
req.device_queue_item.dev_eui = dev_eui
req.device_queue_item.f_port = 10
resp = client.Enqueue(req, metadata=auth_token)
return resp.f_cnt
def FlushQueue(self, dev_eui):
"""
Flush the downlink queue of an endpoint.
Parameters
----------
dev_eui : hex
Endpoint EUI.
"""
# Connect without using TLS.
channel = grpc.insecure_channel(self.server)
# Device-queue API client.
client = api.DeviceQueueServiceStub(channel)
# Define the API key meta-data.
auth_token = [("authorization", "Bearer %s" % self.api_token)]
req = api.FlushDeviceQueueRequest()
req.dev_eui = dev_eui
client.Flush(req, metadata=auth_token)
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