STM32 Quadrature Decoder Sensor 바인딩

:orphan:

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.. dtcompatible:: st,stm32-qdec
.. _dtbinding_st_stm32_qdec:

st,stm32-qdec
#############

Vendor: :ref:`STMicroelectronics <dt_vendor_st>`

Description
***********



.. code-block:: none

   STM32 quadrature decoder

Properties
**********

.. tabs::

   .. group-tab:: Node specific properties

      Properties not inherited from the base binding file.

      .. list-table::
         :widths: 1 1 4
         :header-rows: 1

         * - Name
           - Type
           - Details

         * - ``pinctrl-0``
           - ``phandles``
           - .. code-block:: none

                Pin configuration/s for the first state. Content is specific to the
                selected pin controller driver implementation.



             This property is **required**.

         * - ``pinctrl-1``
           - ``phandles``
           - .. code-block:: none

                Pin configuration/s for the second state. See pinctrl-0.



         * - ``pinctrl-2``
           - ``phandles``
           - .. code-block:: none

                Pin configuration/s for the third state. See pinctrl-0.



         * - ``pinctrl-3``
           - ``phandles``
           - .. code-block:: none

                Pin configuration/s for the fourth state. See pinctrl-0.



         * - ``pinctrl-4``
           - ``phandles``
           - .. code-block:: none

                Pin configuration/s for the fifth state. See pinctrl-0.



         * - ``pinctrl-names``
           - ``string-array``
           - .. code-block:: none

                Names for the provided states. The number of names needs to match the
                number of states.



             This property is **required**.

         * - ``st,encoder-mode``
           - ``int``
           - .. code-block:: none

                Set encoder mode.
                The following modes are supported:
                0x1: Encoder mode 1 (Default)
                0x2: Encoder mode 2
                0x3: Encoder mode 3
                Some MCUs supports additional modes:
                0x10002: Encoder mode: Clock plus direction, x2 mode
                0x10003: Encoder mode: Clock plus direction, x1 mode
                0x10004: Encoder mode: Directional Clock, x2 mode
                0x10005: Encoder mode: Directional Clock, x1 mode
                0x10006: Quadrature encoder mode: x1 mode, counting on tim_ti1fp1
                0x10007: Quadrature encoder mode: x1 mode, counting on tim_ti2fp2
                Default value complies with stm32 low level timer encoder init value.



             Default value: ``1``

             Legal values: ``1``, ``2``, ``3``, ``65538``, ``65539``, ``65540``, ``65541``, ``65542``, ``65543``

         * - ``st,input-polarity-inverted``
           - ``boolean``
           - .. code-block:: none

                Encoder is triggered by a falling edge on the input pin


         * - ``st,input-filter-level``
           - ``int``
           - .. code-block:: none

                Intensity of the filter applied to the input signal. This is
                implemented by scaling the sampling frequency and adding a counter
                in which N consecutive samples with same value are needed to validate
                a transition.
                Mapping is as follows (F_clk is the timer's clock):
                0: No filter, sampling is done at F_dts (default value)
                1: Fs = F_clk, N=2
                2: Fs = F_clk, N=4
                3: Fs = F_clk, N=8
                4: Fs = F_clk/2, N=6
                5: Fs = F_clk/2, N=8
                6: Fs = F_clk/4, N=6
                7: Fs = F_clk/4, N=8
                8: Fs = F_clk/8, N=6
                9: Fs = F_clk/8, N=8
                10: Fs = F_clk/16, N=5
                11: Fs = F_clk/16, N=6
                12: Fs = F_clk/16, N=8
                13: Fs = F_clk/32, N=5
                14: Fs = F_clk/32, N=6
                15: Fs = F_clk/32, N=8
                Default value is set by hardware at reset



             Legal values: ``0``, ``1``, ``2``, ``3``, ``4``, ``5``, ``6``, ``7``, ``8``, ``9``, ``10``, ``11``, ``12``, ``13``, ``14``, ``15``

         * - ``st,counts-per-revolution``
           - ``int``
           - .. code-block:: none

                This is a number >= 1 that is used to determine how many revolutions
                were done based on the current counter's value.



             This property is **required**.



   .. group-tab:: Deprecated node specific properties

      Deprecated properties not inherited from the base binding file.

      (None)

   .. group-tab:: Base properties

      Properties inherited from the base binding file, which defines
      common properties that may be set on many nodes. Not all of these
      may apply to the "st,stm32-qdec" compatible.

      .. list-table::
         :widths: 1 1 4
         :header-rows: 1

         * - Name
           - Type
           - Details

         * - ``wakeup-source``
           - ``boolean``
           - .. code-block:: none

                Property to identify that a device can be used as wake up source.

                When this property is provided a specific flag is set into the
                device that tells the system that the device is capable of
                wake up the system.

                Wake up capable devices are disabled (interruptions will not wake up
                the system) by default but they can be enabled at runtime if necessary.



         * - ``power-domain``
           - ``phandle``
           - .. code-block:: none


                Power domain the device belongs to.

                The device will be notified when the power domain it belongs to is either
                suspended or resumed.



         * - ``zephyr,pm-device-runtime-auto``
           - ``boolean``
           - .. code-block:: none

                Automatically configure the device for runtime power management after the
                init function runs.



         * - ``zephyr,disabling-power-states``
           - ``phandles``
           - .. code-block:: none

                List of power states that will disable this device power.



         * - ``status``
           - ``string``
           - .. code-block:: none

                indicates the operational status of a device


             Legal values: ``'ok'``, ``'okay'``, ``'disabled'``, ``'reserved'``, ``'fail'``, ``'fail-sss'``

             See :ref:`dt-important-props` for more information.

         * - ``compatible``
           - ``string-array``
           - .. code-block:: none

                compatible strings


             This property is **required**.

             See :ref:`dt-important-props` for more information.

         * - ``reg``
           - ``array``
           - .. code-block:: none

                register space


             See :ref:`dt-important-props` for more information.

         * - ``reg-names``
           - ``string-array``
           - .. code-block:: none

                name of each register space


         * - ``interrupts``
           - ``array``
           - .. code-block:: none

                interrupts for device


             See :ref:`dt-important-props` for more information.

         * - ``interrupts-extended``
           - ``compound``
           - .. code-block:: none

                extended interrupt specifier for device


         * - ``interrupt-names``
           - ``string-array``
           - .. code-block:: none

                name of each interrupt


         * - ``interrupt-parent``
           - ``phandle``
           - .. code-block:: none

                phandle to interrupt controller node


         * - ``label``
           - ``string``
           - .. code-block:: none

                Human readable string describing the device (used as device_get_binding() argument)



             See :ref:`dt-important-props` for more information.

             This property is **deprecated**.

         * - ``clocks``
           - ``phandle-array``
           - .. code-block:: none

                Clock gate information


         * - ``clock-names``
           - ``string-array``
           - .. code-block:: none

                name of each clock


         * - ``#address-cells``
           - ``int``
           - .. code-block:: none

                number of address cells in reg property


         * - ``#size-cells``
           - ``int``
           - .. code-block:: none

                number of size cells in reg property


         * - ``dmas``
           - ``phandle-array``
           - .. code-block:: none

                DMA channels specifiers


         * - ``dma-names``
           - ``string-array``
           - .. code-block:: none

                Provided names of DMA channel specifiers


         * - ``io-channels``
           - ``phandle-array``
           - .. code-block:: none

                IO channels specifiers


         * - ``io-channel-names``
           - ``string-array``
           - .. code-block:: none

                Provided names of IO channel specifiers


         * - ``mboxes``
           - ``phandle-array``
           - .. code-block:: none

                mailbox / IPM channels specifiers


         * - ``mbox-names``
           - ``string-array``
           - .. code-block:: none

                Provided names of mailbox / IPM channel specifiers


         * - ``zephyr,deferred-init``
           - ``boolean``
           - .. code-block:: none

                Do not initialize device automatically on boot. Device should be manually
                initialized using device_init().