class Device

Info	Value
Package	mvnc
Module	mvncapi
Version	2.0
See also	DeviceOption, Graph, Fifo, enumerate_devices()

Overview

The Device class represents a neural compute device and provides methods to communicate with the device to perform inferences.

Create an instance of this class each neural compute device. You can get a list of identifiers for neural compute devices present in the system with enumerate_devices().

Initialization

Create a Device instance:

device = mvncapi.Device(identifier)

Parameter	Type	Description
identifier	ctypes.c_void_p	The identifier of the device to initialize. A list of valid identifiers can be obtained by calling the mvncapi module global function enumerate_devices().

When the Device has been successfully created the DeviceState will be CREATED.

Methods

Method	Description
close	Cease communication with the device.
destroy	Destroy the Device and free associated resources.
get_option	Get the value of a DeviceOption.
open	Initialize the device and open communication.
set_option	Set the value of a DeviceOption.

Typical Usage

Create a Device.
Open the device with Device.open().
Use the device.
Close the device with Device.close().
Destroy the Device and free associated resources with Device.destroy().

See the Python API Overview for more information about typical API usage.

Example

from mvnc import mvncapi

# Get a list of valid device identifiers
device_list = mvncapi.enumerate_devices()

# Create a Device instance for the first device found
device = mvncapi.Device(device_list[0])

# Get the device name and output to console
print(device.get_option(mvncapi.DeviceOption.RO_DEVICE_NAME))

# Open communication with the device
device.open()

#
# Use the device...
#

# Clean up
device.close()
device.destroy()