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# Copyright (c) 2018, Yves Fischer <yvesf+git@xapek.org>.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
if __name__ == "__main__":
import typing
import asyncio
import serial_asyncio
import serial
from comlynx import *
@asyncio.coroutine
def open_serial() -> typing.Tuple[asyncio.StreamReader, asyncio.StreamWriter]:
reader = asyncio.StreamReader()
ser = serial.serial_for_url('/dev/ttyUSB0', baudrate=19200)
protocol = asyncio.StreamReaderProtocol(reader, loop=loop)
transport = serial_asyncio.SerialTransport(loop, protocol, ser)
writer = asyncio.StreamWriter(transport, protocol, reader, loop)
return reader, writer
@asyncio.coroutine
def request(reader: asyncio.StreamReader, writer: asyncio.StreamWriter, message):
data = bytes(tuple(message))
print("Write: {}".format(data))
writer.write(data)
begin = yield from reader.read(1)
if begin != bytes([hdlc.flag_sequence]):
raise Exception('{}'.format(begin))
data = begin + (yield from reader.readuntil(b'\x7e'))
print("Read: {}".format(data))
m = Message.unpack(iter(data))
return m
@asyncio.coroutine
def ping():
reader, writer = yield from open_serial()
message = PingRequest(Address(0, 0, 2), Address.broadcast())
response = yield from request(reader, writer, message)
print(response)
@asyncio.coroutine
def get_node_request():
reader, writer = yield from open_serial()
message = GetNodeInformationRequest(Address(0x00, 0x00, 0x02), Address(0x01, 0x01, 0x3d))
response = yield from request(reader, writer, message)
print(response)
@asyncio.coroutine
def can():
reader, writer = yield from open_serial()
message = CanRequest(Address(0x00, 0x00, 0x02), Address(0x01, 0x01, 0x3d), *Parameters.ULX.LatestEvent)
response = yield from request(reader, writer, message)
print(response)
loop = asyncio.get_event_loop()
loop.run_until_complete(can())
print("Close loop")
loop.close()
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