otime/serial_async_test.py

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2022-03-17 20:57:10 +00:00
import asyncio
import serial_asyncio
from rich.console import Console
from rich import inspect
from datetime import datetime
import mtrreader
import mtrlog
class OutputProtocol(asyncio.Protocol):
def connection_made(self, transport):
self.transport = transport
print('port opened', transport)
transport.serial.rts = False # You can manipulate Serial object via transport
transport.write(b'Hello, World!\n') # Write serial data via transport
def data_received(self, data):
print('data received', repr(data))
msg = mtrreader.MtrDataMessage(data)
inspect(msg)
print(mtrlog.MtrLogFormatter.format(self, msg, datetime.now()))
if b'\n' in data:
self.transport.close()
def connection_lost(self, exc):
print('port closed')
self.transport.loop.stop()
def pause_writing(self):
print('pause writing')
print(self.transport.get_write_buffer_size())
def resume_writing(self):
print(self.transport.get_write_buffer_size())
print('resume writing')
loop = asyncio.get_event_loop()
coro = serial_asyncio.create_serial_connection(loop, OutputProtocol, '/dev/ttyUSB0', baudrate=9600)
transport, protocol = loop.run_until_complete(coro)
loop.run_forever()
loop.close()