:mod:`motmot.fview_ext_trig` - camera trigger device

.. module:: motmot.fview_ext_trig
  :synopsis: camera trigger device

.. index::
  module: fview_ext_trig
  single: fview_ext_trig
  single: analog input
  single: synchronization

This package provides Python access to the :ref:`motmot camera trigger device <fview_ext_trig-overview>`. There are three modules within this package:

:mod:`motmot.fview_ext_trig.ttrigger` -- This is a Python module with traited classes to interact with the :ref:`camtrig <camtrig>` device. (lowest level)
:mod:`motmot.fview_ext_trig.live_timestamp_modeler` -- This module provides a class, LiveTimestampModeler, that links the clocks of the camera and the host computer, keeping a running update of the relationship between the computer's clock and the current framenumber on the camera. The LiveTimestampModelerWithAnalogInput class also provides a time-locked data stream on up to four channels. (middle level)
:mod:`motmot.fview_ext_trig.fview_ext_trig` -- This model implements a plugin for :mod:`fview` to use the LiveTimestampModelerWithAnalogInput class. (high level)

Command-line commands

This package installs several command-line commands:

:command:`trigger_set_frequency` -- Set the frequency of the camera sync trigger on the CamTrig device.
:command:`trigger_check_device` -- Check for the presence of the CamTrig device. If the device is not found, it returns with a non-zero exit code.
:command:`trigger_enter_dfu_mode` -- Reboot the CamTrig device into the DFU (Device Firmware Upload) mode. This can be used in conjunction with dfu_programmer or Atmel FLIP to flash the device with new firmware.

This Python module implements a class, :class:`FviewExtTrig`, that provides an :mod:`fview` plugin to use the :ref:`camtrig <camtrig>` device. In the fview_ext_trig setup.py file, this class is registered as an FView plugin (see :ref:`writing FView plugins <fview-plugin-writing>`).

To use the fview plugin, you will also need chaco.