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:orphan:
:breadcrumbs: <a href="../../index.html">Home</a> / <a href="../../index.html#software-shell">Software</a> / Shell - Accelerometer Bricklet

.. |device_identifier_constant| unicode:: 0xA0
   :trim:

.. _accelerometer_bricklet_shell:

Shell - Accelerometer Bricklet
==============================

.. note::
 This Bricklet is currently in the prototype stage and the software/hardware
 as well as the documentation is in an incomplete state.


This is the description of the :ref:`Shell API bindings <api_bindings_shell>` for the :ref:`Accelerometer Bricklet <accelerometer_bricklet>`. General information and technical
specifications for the Accelerometer Bricklet are summarized in its :ref:`hardware description
<accelerometer_bricklet_description>`.

An :ref:`installation guide <api_bindings_shell_install>` for the Shell API
bindings is part of their general description.

.. _accelerometer_bricklet_shell_examples:


Examples
--------

The example code below is `Public Domain (CC0 1.0)
<http://creativecommons.org/publicdomain/zero/1.0/>`__.

Simple
^^^^^^

`Download (example-simple.sh) <https://github.com/Tinkerforge/accelerometer-bricklet/raw/master/software/examples/shell/example-simple.sh>`__

.. literalinclude:: Accelerometer_Bricklet_Shell_example-simple.sh
 :language: bash
 :linenos:
 :tab-width: 4

Callback
^^^^^^^^

`Download (example-callback.sh) <https://github.com/Tinkerforge/accelerometer-bricklet/raw/master/software/examples/shell/example-callback.sh>`__

.. literalinclude:: Accelerometer_Bricklet_Shell_example-callback.sh
 :language: bash
 :linenos:
 :tab-width: 4

Threshold
^^^^^^^^^

`Download (example-threshold.sh) <https://github.com/Tinkerforge/accelerometer-bricklet/raw/master/software/examples/shell/example-threshold.sh>`__

.. literalinclude:: Accelerometer_Bricklet_Shell_example-threshold.sh
 :language: bash
 :linenos:
 :tab-width: 4

.. _accelerometer_bricklet_shell_api:

API
---

Possible exit codes for all ``tinkerforge`` commands are:

* 1: interrupted (ctrl+c)
* 2: syntax error
* 21: Python 2.5 or newer is required
* 22: Python ``argparse`` module is missing
* 23: socket error
* 24: other exception
* 25: invalid placeholder in format string
* 26: authentication error
* 201: timeout occurred
* 209: invalid argument value
* 210: function is not supported
* 211: unknown error



Command Structure
^^^^^^^^^^^^^^^^^

The common options of the ``call`` and ``dispatch`` commands are documented
:ref:`here <ipcon_shell_api>`. The specific command structure is shown below.

.. sh:function:: X Stinkerforge Pcall Naccelerometer-bricklet A[<option>..] L<uid> L<function> L[<argument>..]

 :param <uid>: string
 :param <function>: string

 The ``call`` command is used to call a function of the Accelerometer Bricklet. It can take several
 options:

 * ``--help`` shows help for the specific ``call`` command and exits
 * ``--list-functions`` shows a list of known functions of the Accelerometer Bricklet and exits


.. sh:function:: X Stinkerforge Pdispatch Naccelerometer-bricklet A[<option>..] L<uid> L<callback>

 :param <uid>: string
 :param <callback>: string

 The ``dispatch`` command is used to dispatch a callback of the Accelerometer Bricklet. It can
 take several options:

 * ``--help`` shows help for the specific ``dispatch`` command and exits
 * ``--list-callbacks`` shows a list of known callbacks of the Accelerometer Bricklet and exits


.. sh:function:: X Stinkerforge Scall Paccelerometer-bricklet L<uid> N<function> A[<option>..] L[<argument>..]

 :param <uid>: string
 :param <function>: string

 The ``<function>`` to be called can take different options depending of its
 kind. All functions can take the following options:

 * ``--help`` shows help for the specific function and exits

 Getter functions can take the following options:

 * ``--execute <command>`` shell command line to execute for each incoming
   response (see section about :ref:`output formatting <ipcon_shell_output>`
   for details)

 Setter functions can take the following options:

 * ``--expect-response`` requests response and waits for it

 The ``--expect-response`` option for setter functions allows to detect
 timeouts and other error conditions calls of setters as well. The device will
 then send a response for this purpose. If this option is not given for a
 setter function then no response is send and errors are silently ignored,
 because they cannot be detected.


.. sh:function:: X Stinkerforge Sdispatch Paccelerometer-bricklet L<uid> N<callback> A[<option>..]

 :param <uid>: string
 :param <callback>: string

 The ``<callback>`` to be dispatched can take several options:

 * ``--help`` shows help for the specific callback and exits
 * ``--execute <command>`` shell command line to execute for each incoming
   response (see section about :ref:`output formatting <ipcon_shell_output>`
   for details)



Basic Functions
^^^^^^^^^^^^^^^



.. sh:function:: tinkerforge call accelerometer-bricklet <uid> get-acceleration  


 :returns x: int
 :returns y: int
 :returns z: int

 Returns the acceleration in x, y and z direction. The values
 are given in mG (1/1000 G).
 
 If you want to get the acceleration periodically, it is recommended 
 to use the callback :sh:func:`acceleration <accelerometer-bricklet acceleration>` and set the period with 
 :sh:func:`set-acceleration-callback-period <accelerometer-bricklet set-acceleration-callback-period>`.
 
.. sh:function:: tinkerforge call accelerometer-bricklet <uid> get-temperature  


 :returns temperature: int

 Returns the temperature of the accelerometer in °C.
 
.. sh:function:: tinkerforge call accelerometer-bricklet <uid> led-on  


 :noreturn: no output

 Enables the LED on the Bricklet.
 
.. sh:function:: tinkerforge call accelerometer-bricklet <uid> led-off  


 :noreturn: no output

 Disables the LED on the Bricklet.
 
.. sh:function:: tinkerforge call accelerometer-bricklet <uid> is-led-on  


 :returns value: int

 Returns *true* if the LED is enabled, *false* otherwise.
 


Advanced Functions
^^^^^^^^^^^^^^^^^^

.. sh:function:: tinkerforge call accelerometer-bricklet <uid> set-configuration <data-rate> <full-scale> <filter-bandwidth> 

 :param <data-rate>: int (has symbols)
 :param <full-scale>: int (has symbols)
 :param <filter-bandwidth>: int (has symbols)

 :noreturn: no output

 Configures the data rate, full scale range and filter bandwidth.
 Possible values are:
 
 * Data rate of 0Hz to 1600Hz.
 * Full scale range of -2G to +2G up to -16G to +16G.
 * Filter bandwidth between 50Hz and 800Hz.
 
 Decreasing data rate or full scale range will also decrease the noise on 
 the data.
 
 The default values are 100Hz data rate, -4G to +4G range and 200Hz
 filter bandwidth.
 
 The following symbols are available for this function:
 
 * ``off`` = 0, for <data-rate>
 * ``3hz`` = 1, for <data-rate>
 * ``6hz`` = 2, for <data-rate>
 * ``12hz`` = 3, for <data-rate>
 * ``25hz`` = 4, for <data-rate>
 * ``50hz`` = 5, for <data-rate>
 * ``100hz`` = 6, for <data-rate>
 * ``400hz`` = 7, for <data-rate>
 * ``800hz`` = 8, for <data-rate>
 * ``1600hz`` = 9, for <data-rate>
 * ``2g`` = 0, for <full-scale>
 * ``4g`` = 1, for <full-scale>
 * ``6g`` = 2, for <full-scale>
 * ``8g`` = 3, for <full-scale>
 * ``16g`` = 4, for <full-scale>
 * ``800hz`` = 0, for <filter-bandwidth>
 * ``400hz`` = 1, for <filter-bandwidth>
 * ``200hz`` = 2, for <filter-bandwidth>
 * ``50hz`` = 3, for <filter-bandwidth>
 
.. sh:function:: tinkerforge call accelerometer-bricklet <uid> get-configuration  


 :returns data-rate: int (has symbols)
 :returns full-scale: int (has symbols)
 :returns filter-bandwidth: int (has symbols)

 Returns the configuration as set by :sh:func:`set-configuration <accelerometer-bricklet set-configuration>`.
 
 The following symbols are available for this function:
 
 * ``off`` = 0, for data-rate
 * ``3hz`` = 1, for data-rate
 * ``6hz`` = 2, for data-rate
 * ``12hz`` = 3, for data-rate
 * ``25hz`` = 4, for data-rate
 * ``50hz`` = 5, for data-rate
 * ``100hz`` = 6, for data-rate
 * ``400hz`` = 7, for data-rate
 * ``800hz`` = 8, for data-rate
 * ``1600hz`` = 9, for data-rate
 * ``2g`` = 0, for full-scale
 * ``4g`` = 1, for full-scale
 * ``6g`` = 2, for full-scale
 * ``8g`` = 3, for full-scale
 * ``16g`` = 4, for full-scale
 * ``800hz`` = 0, for filter-bandwidth
 * ``400hz`` = 1, for filter-bandwidth
 * ``200hz`` = 2, for filter-bandwidth
 * ``50hz`` = 3, for filter-bandwidth
 
.. sh:function:: tinkerforge call accelerometer-bricklet <uid> get-identity  


 :returns uid: string
 :returns connected-uid: string
 :returns position: char
 :returns hardware-version: int,int,int
 :returns firmware-version: int,int,int
 :returns device-identifier: int (has symbols)

 Returns the UID, the UID where the Bricklet is connected to, 
 the position, the hardware and firmware version as well as the
 device identifier.
 
 The position can be 'a', 'b', 'c' or 'd'.
 
 The device identifier numbers can be found :ref:`here <device_identifier>`.
 |device_identifier_constant|
 


Callback Configuration Functions
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^



.. sh:function:: tinkerforge call accelerometer-bricklet <uid> set-acceleration-callback-period <period> 

 :param <period>: int

 :noreturn: no output

 Sets the period in ms with which the :sh:func:`acceleration <accelerometer-bricklet acceleration>` callback is triggered
 periodically. A value of 0 turns the callback off.
 
 :sh:func:`acceleration <accelerometer-bricklet acceleration>` is only triggered if the acceleration has changed since the
 last triggering.
 
 The default value is 0.
 
.. sh:function:: tinkerforge call accelerometer-bricklet <uid> get-acceleration-callback-period  


 :returns period: int

 Returns the period as set by :sh:func:`set-acceleration-callback-period <accelerometer-bricklet set-acceleration-callback-period>`.
 
.. sh:function:: tinkerforge call accelerometer-bricklet <uid> set-acceleration-callback-threshold <option> <min-x> <max-x> <min-y> <max-y> <min-z> <max-z> 

 :param <option>: char (has symbols)
 :param <min-x>: int
 :param <max-x>: int
 :param <min-y>: int
 :param <max-y>: int
 :param <min-z>: int
 :param <max-z>: int

 :noreturn: no output

 Sets the thresholds for the :sh:func:`acceleration-reached <accelerometer-bricklet acceleration-reached>` callback. 
 
 The following options are possible:
 
 .. csv-table::
  :header: "Option", "Description"
  :widths: 10, 100
 
  "'x'",    "Callback is turned off"
  "'o'",    "Callback is triggered when the temperature is *outside* the min and max values"
  "'i'",    "Callback is triggered when the temperature is *inside* the min and max values"
  "'<'",    "Callback is triggered when the temperature is smaller than the min value (max is ignored)"
  "'>'",    "Callback is triggered when the temperature is greater than the min value (max is ignored)"
 
 The default value is ('x', 0, 0, 0, 0, 0, 0).
 
 The following symbols are available for this function:
 
 * ``off`` = x, for <option>
 * ``outside`` = o, for <option>
 * ``inside`` = i, for <option>
 * ``smaller`` = <, for <option>
 * ``greater`` = >, for <option>
 
.. sh:function:: tinkerforge call accelerometer-bricklet <uid> get-acceleration-callback-threshold  


 :returns option: char (has symbols)
 :returns min-x: int
 :returns max-x: int
 :returns min-y: int
 :returns max-y: int
 :returns min-z: int
 :returns max-z: int

 Returns the threshold as set by :sh:func:`set-acceleration-callback-threshold <accelerometer-bricklet set-acceleration-callback-threshold>`.
 
 The following symbols are available for this function:
 
 * ``off`` = x, for option
 * ``outside`` = o, for option
 * ``inside`` = i, for option
 * ``smaller`` = <, for option
 * ``greater`` = >, for option
 
.. sh:function:: tinkerforge call accelerometer-bricklet <uid> set-debounce-period <debounce> 

 :param <debounce>: int

 :noreturn: no output

 Sets the period in ms with which the threshold callback
 
 * :sh:func:`acceleration-reached <accelerometer-bricklet acceleration-reached>`
 
 is triggered, if the threshold
 
 * :sh:func:`set-acceleration-callback-threshold <accelerometer-bricklet set-acceleration-callback-threshold>`
 
 keeps being reached.
 
 The default value is 100.
 
.. sh:function:: tinkerforge call accelerometer-bricklet <uid> get-debounce-period  


 :returns debounce: int

 Returns the debounce period as set by :sh:func:`set-debounce-period <accelerometer-bricklet set-debounce-period>`.
 


.. _accelerometer_bricklet_shell_callbacks:

Callbacks
^^^^^^^^^

Callbacks can be used to receive time critical or recurring data from the
device:

.. code-block:: bash

    tinkerforge dispatch accelerometer-bricklet <uid> example

The available callbacks are described below.

.. note::
 Using callbacks for recurring events is *always* preferred
 compared to using getters. It will use less USB bandwidth and the latency
 will be a lot better, since there is no round trip time.

.. sh:function::  tinkerforge dispatch accelerometer-bricklet <uid> acceleration

 :returns x: int
 :returns y: int
 :returns z: int


 This callback is triggered periodically with the period that is set by
 :sh:func:`set-acceleration-callback-period <accelerometer-bricklet set-acceleration-callback-period>`. The parameters are the
 X, Y and Z acceleration.
 
 :sh:func:`acceleration <accelerometer-bricklet acceleration>` is only triggered if the acceleration has changed since the
 last triggering.
 
.. sh:function::  tinkerforge dispatch accelerometer-bricklet <uid> acceleration-reached

 :returns x: int
 :returns y: int
 :returns z: int


 This callback is triggered when the threshold as set by
 :sh:func:`set-acceleration-callback-threshold <accelerometer-bricklet set-acceleration-callback-threshold>` is reached.
 The parameters are the X, Y and Z acceleration.
 
 If the threshold keeps being reached, the callback is triggered periodically
 with the period as set by :sh:func:`set-debounce-period <accelerometer-bricklet set-debounce-period>`.
 


