from functools import partial
import argparse
import asyncio
import logging
from dsmr_parser.clients import create_dsmr_reader, create_tcp_dsmr_reader
def console():
"""Output DSMR data to console."""
parser = argparse.ArgumentParser(description=console.__doc__)
parser.add_argument('--device', default='/dev/ttyUSB0',
help='port to read DSMR data from')
parser.add_argument('--host', default=None,
help='alternatively connect using TCP host.')
parser.add_argument('--port', default=None,
help='TCP port to use for connection')
parser.add_argument('--version', default='2.2', choices=['2.2', '4', '5', '5B', '5L'],
help='DSMR version (2.2, 4, 5, 5B, 5L)')
parser.add_argument('--verbose', '-v', action='count')
args = parser.parse_args()
if args.verbose:
level = logging.DEBUG
else:
level = logging.ERROR
logging.basicConfig(level=level)
loop = asyncio.get_event_loop()
def print_callback(telegram):
"""Callback that prints telegram values."""
for obiref, obj in telegram.items():
if obj:
print(obj.value, obj.unit)
print()
# create tcp or serial connection depending on args
if args.host and args.port:
create_connection = partial(create_tcp_dsmr_reader,
args.host, args.port, args.version,
print_callback, loop=loop)
else:
create_connection = partial(create_dsmr_reader,
args.device, args.version,
print_callback, loop=loop)
try:
# connect and keep connected until interrupted by ctrl-c
while True:
# create serial or tcp connection
conn = create_connection()
transport, protocol = loop.run_until_complete(conn)
# wait until connection it closed
loop.run_until_complete(protocol.wait_closed())
# wait 5 seconds before attempting reconnect
loop.run_until_complete(asyncio.sleep(5))
except KeyboardInterrupt:
# cleanup connection after user initiated shutdown
transport.close()
loop.run_until_complete(asyncio.sleep(0))
finally:
loop.close()