============================ MATRIXIO Python MALOS Driver

A simple Python_ coroutine based driver for communicating with MATRIX-MALOS services_.

License

This application follows the GNU General Public License, as described in the LICENSE file.

Installing

The package is available on PyPI, so you can easily install via pip:

.. code-block:: console

$ pip install matrix-io-malos

Running the CLI client

The library includes a simple command line client to start reading data from your MALOS service right away.

.. code-block:: console

# Get the malosclient help screen
$ malosclient --help

# Get IMU data to STDOUT from a locally running MALOS service
$ malosclient IMU

# Get HUMIDITY data to STDOUT from a remotely running MALOS service
$ malosclient -h 192.168.0.100 HUMIDITY

# Get FACE detection data using a serialized driver config file
$ malosclient --driver-config-file ~/driver_config.proto VISION

Using the MalosDriver

To use the MALOS driver works as an async generator so in your code you can do the following:

.. code-block:: python

import asyncio
import sys

from matrix_io.malos.driver import IMU_PORT, UV_PORT
from matrix_io.proto.malos.v1 import driver_pb2
from matrix_io.proto.malos.v1 import sense_pb2

from matrix_io.malos.driver import MalosDriver


async def imu_data(imu_driver):
    async for msg in imu_driver.get_data():
        print(sense_pb2.Imu().FromString(msg))
        await asyncio.sleep(1.0)


async def uv_data(uv_driver):
    async for msg in uv_driver.get_data():
        print(sense_pb2.UV().FromString(msg))
        await asyncio.sleep(1.0)


async def status_handler(driver):

    type_mapping = {
        driver_pb2.Status.MESSAGE_TYPE_NOT_DEFINED: "Not Defined",
        driver_pb2.Status.STARTED: "Started",
        driver_pb2.Status.STOPPED: "Stopped",
        driver_pb2.Status.CONFIG_RECEIVED: "Config Received",
        driver_pb2.Status.COMMAND_EXECUTED: "Command Executed",
        driver_pb2.Status.STATUS_CRITICAL: "Critical",
        driver_pb2.Status.STATUS_ERROR: "Error",
        driver_pb2.Status.STATUS_WARNING: "Warning",
        driver_pb2.Status.STATUS_INFO: "Info",
        driver_pb2.Status.STATUS_DEBUG: "Debug"
    }

    async for msg in driver.get_status():
        print(type_mapping[msg.type])

        if msg.uuid:
            print("UUID: {}".format(msg.uuid))
        if msg.message:
            print("MESSAGE: {}".format(msg.message))

        await asyncio.sleep(1.0)


# Driver configuration
driver_config = driver_pb2.DriverConfig()

# Create the drivers
imu_driver = MalosDriver('localhost', IMU_PORT)
uv_driver = MalosDriver('localhost', UV_PORT)

# Create loop and initialize keep-alive
loop = asyncio.get_event_loop()
loop.run_until_complete(imu_driver.configure(driver_config))
loop.run_until_complete(uv_driver.configure(driver_config))
loop.create_task(imu_driver.start_keep_alive())
loop.create_task(uv_driver.start_keep_alive())

# Initialize data and error handlers
loop.create_task(imu_data(imu_driver))
loop.create_task(uv_data(uv_driver))
loop.create_task(status_handler(imu_driver))
loop.create_task(status_handler(uv_driver))

try:
    loop.run_forever()
except KeyboardInterrupt:
    print('Shutting down. Bye, bye !', file=sys.stderr)
finally:
    loop.stop()
    asyncio.gather(*asyncio.Task.all_tasks()).cancel()

    loop.run_until_complete(loop.shutdown_asyncgens())
    loop.close()

Who can answer questions about this library?

• Heitor Silva heitor.silva@admobilize.com
• Maciej Ruckgaber maciek.ruckgaber@admobilize.com

More Documentation

.. toctree:: :titlesonly:

CHANGELOG

.. _0MQ: http://zeromq.org/ .. _Python: https://www.python.org/ .. _virtualenv: https://virtualenv.pypa.io/en/stable/ .. _matrixio-protos-0.0.25: https://pypi.org/project/matrix-io-proto .. _pypi: https://pypi.org/ .. _MATRIX-MALOS services: https://matrix-io.github.io/matrix-documentation/matrix-core/getting-started/understanding-core/