27 lines
1.1 KiB
ReStructuredText
27 lines
1.1 KiB
ReStructuredText
|
``qencoder`` Quadrature Encoder
|
|||
|
|
===============================
|
|||
|
|
|
|||
|
|
This example is a simple test of a Quadrature Encoder driver. It simply reads
|
|||
|
|
positional data from the encoder and prints it.,
|
|||
|
|
|
|||
|
|
This test depends on these specific QE/NSH configurations settings (your
|
|||
|
|
specific PWM settings might require additional settings).
|
|||
|
|
|
|||
|
|
- ``CONFIG_SENSORS_QENCODER`` – Enables quadrature encoder support (upper-half
|
|||
|
|
driver).
|
|||
|
|
- ``CONFIG_NSH_BUILTIN_APPS`` – Build the QE test as an NSH built-in function.
|
|||
|
|
Default: Built as a standalone program.
|
|||
|
|
|
|||
|
|
Additional configuration options will mostly likely be required for the board-
|
|||
|
|
specific lower-half driver. See the ``README.txt`` file in your board
|
|||
|
|
configuration directory.
|
|||
|
|
|
|||
|
|
Specific configuration options for this example include:
|
|||
|
|
|
|||
|
|
- ``CONFIG_EXAMPLES_QENCODER_DEVPATH`` – The path to the QE device. Default:
|
|||
|
|
``/dev/qe0``.
|
|||
|
|
- ``CONFIG_EXAMPLES_QENCODER_NSAMPLES`` – This number of samples is collected and
|
|||
|
|
the program terminates. Default: Samples are collected indefinitely.
|
|||
|
|
- ``CONFIG_EXAMPLES_QENCODER_DELAY`` – This value provides the delay (in
|
|||
|
|
milliseconds) between each sample. Default: ``100`` milliseconds.
|